SPC Day 2 Fire Weather Outlook

1 month 2 weeks ago
SPC Day 2 Fire Weather Outlook
Day 2 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0224 PM CDT Fri Aug 01 2025 Valid 021200Z - 031200Z ...CRITICAL FIRE WEATHER AREA FOR PORTIONS OF SOUTHERN/SOUTHEASTERN UTAH INTO NORTHWEST COLORADO... Another day of hot, dry, and breezy conditions is likely tomorrow (Saturday) afternoon/evening across much of the southern/eastern Great Basin and adjacent portions of northern Arizona, western Colorado, and southwestern Wyoming. A Critical fire weather area was introduced across portions of southern/eastern Utah and northwestern Colorado, where several hours of sustained winds in excess of 20 mph and minimum RH values around 10-15% overlapping critically receptive fuels are expected. Minor modifications were also made to the isolated dry thunderstorm area over portions of the northern Great Basin and Intermountain West based on the latest high-resolution ensemble guidance. Please see the previous discussion below for more information on tomorrow's fire weather forecast. ..Elliott.. 08/01/2025 .PREV DISCUSSION... /ISSUED 0156 AM CDT Fri Aug 01 2025/ ...Synopsis... A midlevel shortwave trough will deamplify as it moves slowly eastward across the northern Great Basin during the day. Large-scale forcing for ascent and steep low/midlevel lapse rates preceding this feature will promote another day of isolated to widely scattered high-based thunderstorms across the northern Great Basin/Intermountain West. Around 0.5-0.7 inch PW and modest storm motions will support mostly dry thunderstorms, posing a risk of lightning-induced ignitions over receptive fuels. Between the shortwave trough and a large-scale ridge over the Southwest/northern Mexico, moderate midlevel westerly flow will overspread a deeply mixed boundary layer over parts of the Southwest/Great Basin into the central Rockies. Single-digit to lower teens RH and breezy west-southwesterly surface winds will yield elevated to locally critical fire-weather conditions across parts of northern AZ, much of southern/central UT, and far western CO during the afternoon. ...Please see www.spc.noaa.gov/fire for graphic product... Read more

SPC Day 2 Fire Weather Outlook

1 month 2 weeks ago
SPC Day 2 Fire Weather Outlook
Day 2 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0224 PM CDT Fri Aug 01 2025 Valid 021200Z - 031200Z ...CRITICAL FIRE WEATHER AREA FOR PORTIONS OF SOUTHERN/SOUTHEASTERN UTAH INTO NORTHWEST COLORADO... Another day of hot, dry, and breezy conditions is likely tomorrow (Saturday) afternoon/evening across much of the southern/eastern Great Basin and adjacent portions of northern Arizona, western Colorado, and southwestern Wyoming. A Critical fire weather area was introduced across portions of southern/eastern Utah and northwestern Colorado, where several hours of sustained winds in excess of 20 mph and minimum RH values around 10-15% overlapping critically receptive fuels are expected. Minor modifications were also made to the isolated dry thunderstorm area over portions of the northern Great Basin and Intermountain West based on the latest high-resolution ensemble guidance. Please see the previous discussion below for more information on tomorrow's fire weather forecast. ..Elliott.. 08/01/2025 .PREV DISCUSSION... /ISSUED 0156 AM CDT Fri Aug 01 2025/ ...Synopsis... A midlevel shortwave trough will deamplify as it moves slowly eastward across the northern Great Basin during the day. Large-scale forcing for ascent and steep low/midlevel lapse rates preceding this feature will promote another day of isolated to widely scattered high-based thunderstorms across the northern Great Basin/Intermountain West. Around 0.5-0.7 inch PW and modest storm motions will support mostly dry thunderstorms, posing a risk of lightning-induced ignitions over receptive fuels. Between the shortwave trough and a large-scale ridge over the Southwest/northern Mexico, moderate midlevel westerly flow will overspread a deeply mixed boundary layer over parts of the Southwest/Great Basin into the central Rockies. Single-digit to lower teens RH and breezy west-southwesterly surface winds will yield elevated to locally critical fire-weather conditions across parts of northern AZ, much of southern/central UT, and far western CO during the afternoon. ...Please see www.spc.noaa.gov/fire for graphic product... Read more

SPC Day 2 Fire Weather Outlook

1 month 2 weeks ago
SPC Day 2 Fire Weather Outlook
Day 2 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0224 PM CDT Fri Aug 01 2025 Valid 021200Z - 031200Z ...CRITICAL FIRE WEATHER AREA FOR PORTIONS OF SOUTHERN/SOUTHEASTERN UTAH INTO NORTHWEST COLORADO... Another day of hot, dry, and breezy conditions is likely tomorrow (Saturday) afternoon/evening across much of the southern/eastern Great Basin and adjacent portions of northern Arizona, western Colorado, and southwestern Wyoming. A Critical fire weather area was introduced across portions of southern/eastern Utah and northwestern Colorado, where several hours of sustained winds in excess of 20 mph and minimum RH values around 10-15% overlapping critically receptive fuels are expected. Minor modifications were also made to the isolated dry thunderstorm area over portions of the northern Great Basin and Intermountain West based on the latest high-resolution ensemble guidance. Please see the previous discussion below for more information on tomorrow's fire weather forecast. ..Elliott.. 08/01/2025 .PREV DISCUSSION... /ISSUED 0156 AM CDT Fri Aug 01 2025/ ...Synopsis... A midlevel shortwave trough will deamplify as it moves slowly eastward across the northern Great Basin during the day. Large-scale forcing for ascent and steep low/midlevel lapse rates preceding this feature will promote another day of isolated to widely scattered high-based thunderstorms across the northern Great Basin/Intermountain West. Around 0.5-0.7 inch PW and modest storm motions will support mostly dry thunderstorms, posing a risk of lightning-induced ignitions over receptive fuels. Between the shortwave trough and a large-scale ridge over the Southwest/northern Mexico, moderate midlevel westerly flow will overspread a deeply mixed boundary layer over parts of the Southwest/Great Basin into the central Rockies. Single-digit to lower teens RH and breezy west-southwesterly surface winds will yield elevated to locally critical fire-weather conditions across parts of northern AZ, much of southern/central UT, and far western CO during the afternoon. ...Please see www.spc.noaa.gov/fire for graphic product... Read more

SPC Day 2 Fire Weather Outlook

1 month 2 weeks ago
SPC Day 2 Fire Weather Outlook
Day 2 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0224 PM CDT Fri Aug 01 2025 Valid 021200Z - 031200Z ...CRITICAL FIRE WEATHER AREA FOR PORTIONS OF SOUTHERN/SOUTHEASTERN UTAH INTO NORTHWEST COLORADO... Another day of hot, dry, and breezy conditions is likely tomorrow (Saturday) afternoon/evening across much of the southern/eastern Great Basin and adjacent portions of northern Arizona, western Colorado, and southwestern Wyoming. A Critical fire weather area was introduced across portions of southern/eastern Utah and northwestern Colorado, where several hours of sustained winds in excess of 20 mph and minimum RH values around 10-15% overlapping critically receptive fuels are expected. Minor modifications were also made to the isolated dry thunderstorm area over portions of the northern Great Basin and Intermountain West based on the latest high-resolution ensemble guidance. Please see the previous discussion below for more information on tomorrow's fire weather forecast. ..Elliott.. 08/01/2025 .PREV DISCUSSION... /ISSUED 0156 AM CDT Fri Aug 01 2025/ ...Synopsis... A midlevel shortwave trough will deamplify as it moves slowly eastward across the northern Great Basin during the day. Large-scale forcing for ascent and steep low/midlevel lapse rates preceding this feature will promote another day of isolated to widely scattered high-based thunderstorms across the northern Great Basin/Intermountain West. Around 0.5-0.7 inch PW and modest storm motions will support mostly dry thunderstorms, posing a risk of lightning-induced ignitions over receptive fuels. Between the shortwave trough and a large-scale ridge over the Southwest/northern Mexico, moderate midlevel westerly flow will overspread a deeply mixed boundary layer over parts of the Southwest/Great Basin into the central Rockies. Single-digit to lower teens RH and breezy west-southwesterly surface winds will yield elevated to locally critical fire-weather conditions across parts of northern AZ, much of southern/central UT, and far western CO during the afternoon. ...Please see www.spc.noaa.gov/fire for graphic product... Read more

SPC Day 2 Fire Weather Outlook

1 month 2 weeks ago
SPC Day 2 Fire Weather Outlook
Day 2 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0224 PM CDT Fri Aug 01 2025 Valid 021200Z - 031200Z ...CRITICAL FIRE WEATHER AREA FOR PORTIONS OF SOUTHERN/SOUTHEASTERN UTAH INTO NORTHWEST COLORADO... Another day of hot, dry, and breezy conditions is likely tomorrow (Saturday) afternoon/evening across much of the southern/eastern Great Basin and adjacent portions of northern Arizona, western Colorado, and southwestern Wyoming. A Critical fire weather area was introduced across portions of southern/eastern Utah and northwestern Colorado, where several hours of sustained winds in excess of 20 mph and minimum RH values around 10-15% overlapping critically receptive fuels are expected. Minor modifications were also made to the isolated dry thunderstorm area over portions of the northern Great Basin and Intermountain West based on the latest high-resolution ensemble guidance. Please see the previous discussion below for more information on tomorrow's fire weather forecast. ..Elliott.. 08/01/2025 .PREV DISCUSSION... /ISSUED 0156 AM CDT Fri Aug 01 2025/ ...Synopsis... A midlevel shortwave trough will deamplify as it moves slowly eastward across the northern Great Basin during the day. Large-scale forcing for ascent and steep low/midlevel lapse rates preceding this feature will promote another day of isolated to widely scattered high-based thunderstorms across the northern Great Basin/Intermountain West. Around 0.5-0.7 inch PW and modest storm motions will support mostly dry thunderstorms, posing a risk of lightning-induced ignitions over receptive fuels. Between the shortwave trough and a large-scale ridge over the Southwest/northern Mexico, moderate midlevel westerly flow will overspread a deeply mixed boundary layer over parts of the Southwest/Great Basin into the central Rockies. Single-digit to lower teens RH and breezy west-southwesterly surface winds will yield elevated to locally critical fire-weather conditions across parts of northern AZ, much of southern/central UT, and far western CO during the afternoon. ...Please see www.spc.noaa.gov/fire for graphic product... Read more

SPC Day 2 Fire Weather Outlook

1 month 2 weeks ago
SPC Day 2 Fire Weather Outlook
Day 2 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0224 PM CDT Fri Aug 01 2025 Valid 021200Z - 031200Z ...CRITICAL FIRE WEATHER AREA FOR PORTIONS OF SOUTHERN/SOUTHEASTERN UTAH INTO NORTHWEST COLORADO... Another day of hot, dry, and breezy conditions is likely tomorrow (Saturday) afternoon/evening across much of the southern/eastern Great Basin and adjacent portions of northern Arizona, western Colorado, and southwestern Wyoming. A Critical fire weather area was introduced across portions of southern/eastern Utah and northwestern Colorado, where several hours of sustained winds in excess of 20 mph and minimum RH values around 10-15% overlapping critically receptive fuels are expected. Minor modifications were also made to the isolated dry thunderstorm area over portions of the northern Great Basin and Intermountain West based on the latest high-resolution ensemble guidance. Please see the previous discussion below for more information on tomorrow's fire weather forecast. ..Elliott.. 08/01/2025 .PREV DISCUSSION... /ISSUED 0156 AM CDT Fri Aug 01 2025/ ...Synopsis... A midlevel shortwave trough will deamplify as it moves slowly eastward across the northern Great Basin during the day. Large-scale forcing for ascent and steep low/midlevel lapse rates preceding this feature will promote another day of isolated to widely scattered high-based thunderstorms across the northern Great Basin/Intermountain West. Around 0.5-0.7 inch PW and modest storm motions will support mostly dry thunderstorms, posing a risk of lightning-induced ignitions over receptive fuels. Between the shortwave trough and a large-scale ridge over the Southwest/northern Mexico, moderate midlevel westerly flow will overspread a deeply mixed boundary layer over parts of the Southwest/Great Basin into the central Rockies. Single-digit to lower teens RH and breezy west-southwesterly surface winds will yield elevated to locally critical fire-weather conditions across parts of northern AZ, much of southern/central UT, and far western CO during the afternoon. ...Please see www.spc.noaa.gov/fire for graphic product... Read more

SPC Day 2 Fire Weather Outlook

1 month 2 weeks ago
SPC Day 2 Fire Weather Outlook
Day 2 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0224 PM CDT Fri Aug 01 2025 Valid 021200Z - 031200Z ...CRITICAL FIRE WEATHER AREA FOR PORTIONS OF SOUTHERN/SOUTHEASTERN UTAH INTO NORTHWEST COLORADO... Another day of hot, dry, and breezy conditions is likely tomorrow (Saturday) afternoon/evening across much of the southern/eastern Great Basin and adjacent portions of northern Arizona, western Colorado, and southwestern Wyoming. A Critical fire weather area was introduced across portions of southern/eastern Utah and northwestern Colorado, where several hours of sustained winds in excess of 20 mph and minimum RH values around 10-15% overlapping critically receptive fuels are expected. Minor modifications were also made to the isolated dry thunderstorm area over portions of the northern Great Basin and Intermountain West based on the latest high-resolution ensemble guidance. Please see the previous discussion below for more information on tomorrow's fire weather forecast. ..Elliott.. 08/01/2025 .PREV DISCUSSION... /ISSUED 0156 AM CDT Fri Aug 01 2025/ ...Synopsis... A midlevel shortwave trough will deamplify as it moves slowly eastward across the northern Great Basin during the day. Large-scale forcing for ascent and steep low/midlevel lapse rates preceding this feature will promote another day of isolated to widely scattered high-based thunderstorms across the northern Great Basin/Intermountain West. Around 0.5-0.7 inch PW and modest storm motions will support mostly dry thunderstorms, posing a risk of lightning-induced ignitions over receptive fuels. Between the shortwave trough and a large-scale ridge over the Southwest/northern Mexico, moderate midlevel westerly flow will overspread a deeply mixed boundary layer over parts of the Southwest/Great Basin into the central Rockies. Single-digit to lower teens RH and breezy west-southwesterly surface winds will yield elevated to locally critical fire-weather conditions across parts of northern AZ, much of southern/central UT, and far western CO during the afternoon. ...Please see www.spc.noaa.gov/fire for graphic product... Read more

SPC Day 2 Fire Weather Outlook

1 month 2 weeks ago
SPC Day 2 Fire Weather Outlook
Day 2 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0224 PM CDT Fri Aug 01 2025 Valid 021200Z - 031200Z ...CRITICAL FIRE WEATHER AREA FOR PORTIONS OF SOUTHERN/SOUTHEASTERN UTAH INTO NORTHWEST COLORADO... Another day of hot, dry, and breezy conditions is likely tomorrow (Saturday) afternoon/evening across much of the southern/eastern Great Basin and adjacent portions of northern Arizona, western Colorado, and southwestern Wyoming. A Critical fire weather area was introduced across portions of southern/eastern Utah and northwestern Colorado, where several hours of sustained winds in excess of 20 mph and minimum RH values around 10-15% overlapping critically receptive fuels are expected. Minor modifications were also made to the isolated dry thunderstorm area over portions of the northern Great Basin and Intermountain West based on the latest high-resolution ensemble guidance. Please see the previous discussion below for more information on tomorrow's fire weather forecast. ..Elliott.. 08/01/2025 .PREV DISCUSSION... /ISSUED 0156 AM CDT Fri Aug 01 2025/ ...Synopsis... A midlevel shortwave trough will deamplify as it moves slowly eastward across the northern Great Basin during the day. Large-scale forcing for ascent and steep low/midlevel lapse rates preceding this feature will promote another day of isolated to widely scattered high-based thunderstorms across the northern Great Basin/Intermountain West. Around 0.5-0.7 inch PW and modest storm motions will support mostly dry thunderstorms, posing a risk of lightning-induced ignitions over receptive fuels. Between the shortwave trough and a large-scale ridge over the Southwest/northern Mexico, moderate midlevel westerly flow will overspread a deeply mixed boundary layer over parts of the Southwest/Great Basin into the central Rockies. Single-digit to lower teens RH and breezy west-southwesterly surface winds will yield elevated to locally critical fire-weather conditions across parts of northern AZ, much of southern/central UT, and far western CO during the afternoon. ...Please see www.spc.noaa.gov/fire for graphic product... Read more

SPC Day 2 Fire Weather Outlook

1 month 2 weeks ago
SPC Day 2 Fire Weather Outlook
Day 2 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0224 PM CDT Fri Aug 01 2025 Valid 021200Z - 031200Z ...CRITICAL FIRE WEATHER AREA FOR PORTIONS OF SOUTHERN/SOUTHEASTERN UTAH INTO NORTHWEST COLORADO... Another day of hot, dry, and breezy conditions is likely tomorrow (Saturday) afternoon/evening across much of the southern/eastern Great Basin and adjacent portions of northern Arizona, western Colorado, and southwestern Wyoming. A Critical fire weather area was introduced across portions of southern/eastern Utah and northwestern Colorado, where several hours of sustained winds in excess of 20 mph and minimum RH values around 10-15% overlapping critically receptive fuels are expected. Minor modifications were also made to the isolated dry thunderstorm area over portions of the northern Great Basin and Intermountain West based on the latest high-resolution ensemble guidance. Please see the previous discussion below for more information on tomorrow's fire weather forecast. ..Elliott.. 08/01/2025 .PREV DISCUSSION... /ISSUED 0156 AM CDT Fri Aug 01 2025/ ...Synopsis... A midlevel shortwave trough will deamplify as it moves slowly eastward across the northern Great Basin during the day. Large-scale forcing for ascent and steep low/midlevel lapse rates preceding this feature will promote another day of isolated to widely scattered high-based thunderstorms across the northern Great Basin/Intermountain West. Around 0.5-0.7 inch PW and modest storm motions will support mostly dry thunderstorms, posing a risk of lightning-induced ignitions over receptive fuels. Between the shortwave trough and a large-scale ridge over the Southwest/northern Mexico, moderate midlevel westerly flow will overspread a deeply mixed boundary layer over parts of the Southwest/Great Basin into the central Rockies. Single-digit to lower teens RH and breezy west-southwesterly surface winds will yield elevated to locally critical fire-weather conditions across parts of northern AZ, much of southern/central UT, and far western CO during the afternoon. ...Please see www.spc.noaa.gov/fire for graphic product... Read more

SPC Day 2 Fire Weather Outlook

1 month 2 weeks ago
SPC Day 2 Fire Weather Outlook
Day 2 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0224 PM CDT Fri Aug 01 2025 Valid 021200Z - 031200Z ...CRITICAL FIRE WEATHER AREA FOR PORTIONS OF SOUTHERN/SOUTHEASTERN UTAH INTO NORTHWEST COLORADO... Another day of hot, dry, and breezy conditions is likely tomorrow (Saturday) afternoon/evening across much of the southern/eastern Great Basin and adjacent portions of northern Arizona, western Colorado, and southwestern Wyoming. A Critical fire weather area was introduced across portions of southern/eastern Utah and northwestern Colorado, where several hours of sustained winds in excess of 20 mph and minimum RH values around 10-15% overlapping critically receptive fuels are expected. Minor modifications were also made to the isolated dry thunderstorm area over portions of the northern Great Basin and Intermountain West based on the latest high-resolution ensemble guidance. Please see the previous discussion below for more information on tomorrow's fire weather forecast. ..Elliott.. 08/01/2025 .PREV DISCUSSION... /ISSUED 0156 AM CDT Fri Aug 01 2025/ ...Synopsis... A midlevel shortwave trough will deamplify as it moves slowly eastward across the northern Great Basin during the day. Large-scale forcing for ascent and steep low/midlevel lapse rates preceding this feature will promote another day of isolated to widely scattered high-based thunderstorms across the northern Great Basin/Intermountain West. Around 0.5-0.7 inch PW and modest storm motions will support mostly dry thunderstorms, posing a risk of lightning-induced ignitions over receptive fuels. Between the shortwave trough and a large-scale ridge over the Southwest/northern Mexico, moderate midlevel westerly flow will overspread a deeply mixed boundary layer over parts of the Southwest/Great Basin into the central Rockies. Single-digit to lower teens RH and breezy west-southwesterly surface winds will yield elevated to locally critical fire-weather conditions across parts of northern AZ, much of southern/central UT, and far western CO during the afternoon. ...Please see www.spc.noaa.gov/fire for graphic product... Read more

SPC Day 2 Fire Weather Outlook

1 month 2 weeks ago
SPC Day 2 Fire Weather Outlook
Day 2 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0224 PM CDT Fri Aug 01 2025 Valid 021200Z - 031200Z ...CRITICAL FIRE WEATHER AREA FOR PORTIONS OF SOUTHERN/SOUTHEASTERN UTAH INTO NORTHWEST COLORADO... Another day of hot, dry, and breezy conditions is likely tomorrow (Saturday) afternoon/evening across much of the southern/eastern Great Basin and adjacent portions of northern Arizona, western Colorado, and southwestern Wyoming. A Critical fire weather area was introduced across portions of southern/eastern Utah and northwestern Colorado, where several hours of sustained winds in excess of 20 mph and minimum RH values around 10-15% overlapping critically receptive fuels are expected. Minor modifications were also made to the isolated dry thunderstorm area over portions of the northern Great Basin and Intermountain West based on the latest high-resolution ensemble guidance. Please see the previous discussion below for more information on tomorrow's fire weather forecast. ..Elliott.. 08/01/2025 .PREV DISCUSSION... /ISSUED 0156 AM CDT Fri Aug 01 2025/ ...Synopsis... A midlevel shortwave trough will deamplify as it moves slowly eastward across the northern Great Basin during the day. Large-scale forcing for ascent and steep low/midlevel lapse rates preceding this feature will promote another day of isolated to widely scattered high-based thunderstorms across the northern Great Basin/Intermountain West. Around 0.5-0.7 inch PW and modest storm motions will support mostly dry thunderstorms, posing a risk of lightning-induced ignitions over receptive fuels. Between the shortwave trough and a large-scale ridge over the Southwest/northern Mexico, moderate midlevel westerly flow will overspread a deeply mixed boundary layer over parts of the Southwest/Great Basin into the central Rockies. Single-digit to lower teens RH and breezy west-southwesterly surface winds will yield elevated to locally critical fire-weather conditions across parts of northern AZ, much of southern/central UT, and far western CO during the afternoon. ...Please see www.spc.noaa.gov/fire for graphic product... Read more

SPC Day 2 Fire Weather Outlook

1 month 2 weeks ago
SPC Day 2 Fire Weather Outlook
Day 2 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0224 PM CDT Fri Aug 01 2025 Valid 021200Z - 031200Z ...CRITICAL FIRE WEATHER AREA FOR PORTIONS OF SOUTHERN/SOUTHEASTERN UTAH INTO NORTHWEST COLORADO... Another day of hot, dry, and breezy conditions is likely tomorrow (Saturday) afternoon/evening across much of the southern/eastern Great Basin and adjacent portions of northern Arizona, western Colorado, and southwestern Wyoming. A Critical fire weather area was introduced across portions of southern/eastern Utah and northwestern Colorado, where several hours of sustained winds in excess of 20 mph and minimum RH values around 10-15% overlapping critically receptive fuels are expected. Minor modifications were also made to the isolated dry thunderstorm area over portions of the northern Great Basin and Intermountain West based on the latest high-resolution ensemble guidance. Please see the previous discussion below for more information on tomorrow's fire weather forecast. ..Elliott.. 08/01/2025 .PREV DISCUSSION... /ISSUED 0156 AM CDT Fri Aug 01 2025/ ...Synopsis... A midlevel shortwave trough will deamplify as it moves slowly eastward across the northern Great Basin during the day. Large-scale forcing for ascent and steep low/midlevel lapse rates preceding this feature will promote another day of isolated to widely scattered high-based thunderstorms across the northern Great Basin/Intermountain West. Around 0.5-0.7 inch PW and modest storm motions will support mostly dry thunderstorms, posing a risk of lightning-induced ignitions over receptive fuels. Between the shortwave trough and a large-scale ridge over the Southwest/northern Mexico, moderate midlevel westerly flow will overspread a deeply mixed boundary layer over parts of the Southwest/Great Basin into the central Rockies. Single-digit to lower teens RH and breezy west-southwesterly surface winds will yield elevated to locally critical fire-weather conditions across parts of northern AZ, much of southern/central UT, and far western CO during the afternoon. ...Please see www.spc.noaa.gov/fire for graphic product... Read more

SPC MD 1860

1 month 2 weeks ago
MD 1860 CONCERNING SEVERE POTENTIAL...WATCH UNLIKELY FOR EASTERN ALABAMA INTO CENTRAL AND SOUTHEAST GEORGIA
Mesoscale Discussion 1860 NWS Storm Prediction Center Norman OK 0107 PM CDT Fri Aug 01 2025 Areas affected...Eastern Alabama into central and southeast Georgia Concerning...Severe potential...Watch unlikely Valid 011807Z - 012000Z Probability of Watch Issuance...5 percent SUMMARY...Thunderstorms developing across eastern Alabama into central and southeast Georgia will pose a risk of damaging downburst winds through late afternoon. The overall severe threat will remain too limited to warrant watch issuance. DISCUSSION...Latest GOES imagery and echo top trends show intensifying thunderstorms along a weak surface confluence band stretching from far southeast AL into southeast GA. Incipient thunderstorms are also noted across eastern AL/northwest GA along a weak surface cold front. Although forcing for ascent across the region remains weak, strong diurnal heating of a weakly capped air mass is supporting uninhibited near-surface parcel ascent within these zones of modest low-level ascent. Very weak mid and upper-level flow over the region will favor a combination of short-lived single cells and multi-cell clusters, and will largely limit the potential for a more robust severe weather threat. However, further heating through late afternoon should allow for MLCAPE values to reach 2500-3500 J/kg as well as promote 0-2 km lapse rates of around 7-8 C/km. This thermodynamic environment is favorable for strong to severe wet downbursts associated with the deeper, more intense convective cores. While such downbursts typically produce gusts of 40-55 mph, sporadic and isolated instances of 60-65 mph winds will be possible - especially if a more consolidated, cold-pool-driven cluster can become establish through peak heating. ..Moore/Smith.. 08/01/2025 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...CHS...JAX...FFC...TAE...BMX... LAT...LON 31658529 31738576 31978610 32578660 33038690 33578688 33868676 34038648 34208562 34158481 33928442 33578390 33308357 33068322 32858284 32678230 32508164 32328119 32218091 32048083 31878092 31738109 31608130 31608162 31658529 MOST PROBABLE PEAK WIND GUST...UP TO 60 MPH Read more

SPC Aug 1, 2025 1930 UTC Day 3 Severe Thunderstorm Outlook

1 month 2 weeks ago
SPC 1930Z Day 3 Outlook
Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0217 PM CDT Fri Aug 01 2025 Valid 031200Z - 041200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS ACROSS PORTIONS OF THE HIGH PLAINS... ...SUMMARY... Isolated to widely scattered thunderstorms are possible in the High Plains during the afternoon Sunday. Some storms may produce large hail and severe wind gusts. ...Synopsis... Ridging aloft will continue in Southwest/Great Basin on Sunday. A shortwave trough will move into the Northwest into the northern Great Basin by late afternoon into the evening. An MCV evolving out of High Plains convection on Saturday appears probable in the southern Plains. Some mid-level flow enhancement will continue over the central/southern Rockies. ...Southern High Plains into Northwest Texas... Some convection may be ongoing early Sunday morning in association with an MCV. There is some potential for this activity to reintensify as surface heating increases. However, model guidance has been uniform in dissipating this convection before that occurs. To its west, the lee trough and an outflow boundary will potentially promote convective development later in the afternoon. With the Southwest ridge amplifying and the region being in the wake of the earlier convection/MCV, there is still some uncertainty as to how much convection will develop. The environment, however, will be supportive of organized storms. 40-50 kts of northwesterly shear would result in supercells. Large hail and severe gusts would be the main threats, but augmented low-level shear along the outflow could promote some tornado risk. Some upscale growth would be expected by evening as a modest low-level jet develops in the Permian Basin/South Plains. Higher probabilities may be needed if confidence increases in storm development and coverage. ...Central into Northern High Plains... With moisture remaining up against the terrain, additional strong to severe storms are possible from eastern Colorado into eastern Wyoming and the Black Hills. Aside from the terrain, the weak surface trough will also serve as a focus for convective development. Shear will generally be weaker in these areas, but around 25-30 kts of effective shear could promote a few marginal supercells and multicell clusters. Storms may not remain organized for a long duration as upper-level flow is weak. The strongest activity could produce large hail and severe wind gusts. ...Oregon... With the approach of the trough, scattered storms are possible in central Oregon in the Blue Mountains. Though buoyancy will be limited, adequate effective shear could promote marginally organized storms. Severe wind gusts would be the main hazard given inverted-v profiles. Confidence in the coverage of strong to severe storms is too low for highlights at this time. ..Wendt.. 08/01/2025 Read more

SPC Aug 1, 2025 1930 UTC Day 3 Severe Thunderstorm Outlook

1 month 2 weeks ago
SPC 1930Z Day 3 Outlook
Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0217 PM CDT Fri Aug 01 2025 Valid 031200Z - 041200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS ACROSS PORTIONS OF THE HIGH PLAINS... ...SUMMARY... Isolated to widely scattered thunderstorms are possible in the High Plains during the afternoon Sunday. Some storms may produce large hail and severe wind gusts. ...Synopsis... Ridging aloft will continue in Southwest/Great Basin on Sunday. A shortwave trough will move into the Northwest into the northern Great Basin by late afternoon into the evening. An MCV evolving out of High Plains convection on Saturday appears probable in the southern Plains. Some mid-level flow enhancement will continue over the central/southern Rockies. ...Southern High Plains into Northwest Texas... Some convection may be ongoing early Sunday morning in association with an MCV. There is some potential for this activity to reintensify as surface heating increases. However, model guidance has been uniform in dissipating this convection before that occurs. To its west, the lee trough and an outflow boundary will potentially promote convective development later in the afternoon. With the Southwest ridge amplifying and the region being in the wake of the earlier convection/MCV, there is still some uncertainty as to how much convection will develop. The environment, however, will be supportive of organized storms. 40-50 kts of northwesterly shear would result in supercells. Large hail and severe gusts would be the main threats, but augmented low-level shear along the outflow could promote some tornado risk. Some upscale growth would be expected by evening as a modest low-level jet develops in the Permian Basin/South Plains. Higher probabilities may be needed if confidence increases in storm development and coverage. ...Central into Northern High Plains... With moisture remaining up against the terrain, additional strong to severe storms are possible from eastern Colorado into eastern Wyoming and the Black Hills. Aside from the terrain, the weak surface trough will also serve as a focus for convective development. Shear will generally be weaker in these areas, but around 25-30 kts of effective shear could promote a few marginal supercells and multicell clusters. Storms may not remain organized for a long duration as upper-level flow is weak. The strongest activity could produce large hail and severe wind gusts. ...Oregon... With the approach of the trough, scattered storms are possible in central Oregon in the Blue Mountains. Though buoyancy will be limited, adequate effective shear could promote marginally organized storms. Severe wind gusts would be the main hazard given inverted-v profiles. Confidence in the coverage of strong to severe storms is too low for highlights at this time. ..Wendt.. 08/01/2025 Read more

SPC Aug 1, 2025 1930 UTC Day 3 Severe Thunderstorm Outlook

1 month 2 weeks ago
SPC 1930Z Day 3 Outlook
Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0217 PM CDT Fri Aug 01 2025 Valid 031200Z - 041200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS ACROSS PORTIONS OF THE HIGH PLAINS... ...SUMMARY... Isolated to widely scattered thunderstorms are possible in the High Plains during the afternoon Sunday. Some storms may produce large hail and severe wind gusts. ...Synopsis... Ridging aloft will continue in Southwest/Great Basin on Sunday. A shortwave trough will move into the Northwest into the northern Great Basin by late afternoon into the evening. An MCV evolving out of High Plains convection on Saturday appears probable in the southern Plains. Some mid-level flow enhancement will continue over the central/southern Rockies. ...Southern High Plains into Northwest Texas... Some convection may be ongoing early Sunday morning in association with an MCV. There is some potential for this activity to reintensify as surface heating increases. However, model guidance has been uniform in dissipating this convection before that occurs. To its west, the lee trough and an outflow boundary will potentially promote convective development later in the afternoon. With the Southwest ridge amplifying and the region being in the wake of the earlier convection/MCV, there is still some uncertainty as to how much convection will develop. The environment, however, will be supportive of organized storms. 40-50 kts of northwesterly shear would result in supercells. Large hail and severe gusts would be the main threats, but augmented low-level shear along the outflow could promote some tornado risk. Some upscale growth would be expected by evening as a modest low-level jet develops in the Permian Basin/South Plains. Higher probabilities may be needed if confidence increases in storm development and coverage. ...Central into Northern High Plains... With moisture remaining up against the terrain, additional strong to severe storms are possible from eastern Colorado into eastern Wyoming and the Black Hills. Aside from the terrain, the weak surface trough will also serve as a focus for convective development. Shear will generally be weaker in these areas, but around 25-30 kts of effective shear could promote a few marginal supercells and multicell clusters. Storms may not remain organized for a long duration as upper-level flow is weak. The strongest activity could produce large hail and severe wind gusts. ...Oregon... With the approach of the trough, scattered storms are possible in central Oregon in the Blue Mountains. Though buoyancy will be limited, adequate effective shear could promote marginally organized storms. Severe wind gusts would be the main hazard given inverted-v profiles. Confidence in the coverage of strong to severe storms is too low for highlights at this time. ..Wendt.. 08/01/2025 Read more

SPC Aug 1, 2025 1930 UTC Day 3 Severe Thunderstorm Outlook

1 month 2 weeks ago
SPC 1930Z Day 3 Outlook
Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0217 PM CDT Fri Aug 01 2025 Valid 031200Z - 041200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS ACROSS PORTIONS OF THE HIGH PLAINS... ...SUMMARY... Isolated to widely scattered thunderstorms are possible in the High Plains during the afternoon Sunday. Some storms may produce large hail and severe wind gusts. ...Synopsis... Ridging aloft will continue in Southwest/Great Basin on Sunday. A shortwave trough will move into the Northwest into the northern Great Basin by late afternoon into the evening. An MCV evolving out of High Plains convection on Saturday appears probable in the southern Plains. Some mid-level flow enhancement will continue over the central/southern Rockies. ...Southern High Plains into Northwest Texas... Some convection may be ongoing early Sunday morning in association with an MCV. There is some potential for this activity to reintensify as surface heating increases. However, model guidance has been uniform in dissipating this convection before that occurs. To its west, the lee trough and an outflow boundary will potentially promote convective development later in the afternoon. With the Southwest ridge amplifying and the region being in the wake of the earlier convection/MCV, there is still some uncertainty as to how much convection will develop. The environment, however, will be supportive of organized storms. 40-50 kts of northwesterly shear would result in supercells. Large hail and severe gusts would be the main threats, but augmented low-level shear along the outflow could promote some tornado risk. Some upscale growth would be expected by evening as a modest low-level jet develops in the Permian Basin/South Plains. Higher probabilities may be needed if confidence increases in storm development and coverage. ...Central into Northern High Plains... With moisture remaining up against the terrain, additional strong to severe storms are possible from eastern Colorado into eastern Wyoming and the Black Hills. Aside from the terrain, the weak surface trough will also serve as a focus for convective development. Shear will generally be weaker in these areas, but around 25-30 kts of effective shear could promote a few marginal supercells and multicell clusters. Storms may not remain organized for a long duration as upper-level flow is weak. The strongest activity could produce large hail and severe wind gusts. ...Oregon... With the approach of the trough, scattered storms are possible in central Oregon in the Blue Mountains. Though buoyancy will be limited, adequate effective shear could promote marginally organized storms. Severe wind gusts would be the main hazard given inverted-v profiles. Confidence in the coverage of strong to severe storms is too low for highlights at this time. ..Wendt.. 08/01/2025 Read more

SPC Aug 1, 2025 1930 UTC Day 3 Severe Thunderstorm Outlook

1 month 2 weeks ago
SPC 1930Z Day 3 Outlook
Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0217 PM CDT Fri Aug 01 2025 Valid 031200Z - 041200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS ACROSS PORTIONS OF THE HIGH PLAINS... ...SUMMARY... Isolated to widely scattered thunderstorms are possible in the High Plains during the afternoon Sunday. Some storms may produce large hail and severe wind gusts. ...Synopsis... Ridging aloft will continue in Southwest/Great Basin on Sunday. A shortwave trough will move into the Northwest into the northern Great Basin by late afternoon into the evening. An MCV evolving out of High Plains convection on Saturday appears probable in the southern Plains. Some mid-level flow enhancement will continue over the central/southern Rockies. ...Southern High Plains into Northwest Texas... Some convection may be ongoing early Sunday morning in association with an MCV. There is some potential for this activity to reintensify as surface heating increases. However, model guidance has been uniform in dissipating this convection before that occurs. To its west, the lee trough and an outflow boundary will potentially promote convective development later in the afternoon. With the Southwest ridge amplifying and the region being in the wake of the earlier convection/MCV, there is still some uncertainty as to how much convection will develop. The environment, however, will be supportive of organized storms. 40-50 kts of northwesterly shear would result in supercells. Large hail and severe gusts would be the main threats, but augmented low-level shear along the outflow could promote some tornado risk. Some upscale growth would be expected by evening as a modest low-level jet develops in the Permian Basin/South Plains. Higher probabilities may be needed if confidence increases in storm development and coverage. ...Central into Northern High Plains... With moisture remaining up against the terrain, additional strong to severe storms are possible from eastern Colorado into eastern Wyoming and the Black Hills. Aside from the terrain, the weak surface trough will also serve as a focus for convective development. Shear will generally be weaker in these areas, but around 25-30 kts of effective shear could promote a few marginal supercells and multicell clusters. Storms may not remain organized for a long duration as upper-level flow is weak. The strongest activity could produce large hail and severe wind gusts. ...Oregon... With the approach of the trough, scattered storms are possible in central Oregon in the Blue Mountains. Though buoyancy will be limited, adequate effective shear could promote marginally organized storms. Severe wind gusts would be the main hazard given inverted-v profiles. Confidence in the coverage of strong to severe storms is too low for highlights at this time. ..Wendt.. 08/01/2025 Read more

SPC Aug 1, 2025 1930 UTC Day 3 Severe Thunderstorm Outlook

1 month 2 weeks ago
SPC 1930Z Day 3 Outlook
Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0217 PM CDT Fri Aug 01 2025 Valid 031200Z - 041200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS ACROSS PORTIONS OF THE HIGH PLAINS... ...SUMMARY... Isolated to widely scattered thunderstorms are possible in the High Plains during the afternoon Sunday. Some storms may produce large hail and severe wind gusts. ...Synopsis... Ridging aloft will continue in Southwest/Great Basin on Sunday. A shortwave trough will move into the Northwest into the northern Great Basin by late afternoon into the evening. An MCV evolving out of High Plains convection on Saturday appears probable in the southern Plains. Some mid-level flow enhancement will continue over the central/southern Rockies. ...Southern High Plains into Northwest Texas... Some convection may be ongoing early Sunday morning in association with an MCV. There is some potential for this activity to reintensify as surface heating increases. However, model guidance has been uniform in dissipating this convection before that occurs. To its west, the lee trough and an outflow boundary will potentially promote convective development later in the afternoon. With the Southwest ridge amplifying and the region being in the wake of the earlier convection/MCV, there is still some uncertainty as to how much convection will develop. The environment, however, will be supportive of organized storms. 40-50 kts of northwesterly shear would result in supercells. Large hail and severe gusts would be the main threats, but augmented low-level shear along the outflow could promote some tornado risk. Some upscale growth would be expected by evening as a modest low-level jet develops in the Permian Basin/South Plains. Higher probabilities may be needed if confidence increases in storm development and coverage. ...Central into Northern High Plains... With moisture remaining up against the terrain, additional strong to severe storms are possible from eastern Colorado into eastern Wyoming and the Black Hills. Aside from the terrain, the weak surface trough will also serve as a focus for convective development. Shear will generally be weaker in these areas, but around 25-30 kts of effective shear could promote a few marginal supercells and multicell clusters. Storms may not remain organized for a long duration as upper-level flow is weak. The strongest activity could produce large hail and severe wind gusts. ...Oregon... With the approach of the trough, scattered storms are possible in central Oregon in the Blue Mountains. Though buoyancy will be limited, adequate effective shear could promote marginally organized storms. Severe wind gusts would be the main hazard given inverted-v profiles. Confidence in the coverage of strong to severe storms is too low for highlights at this time. ..Wendt.. 08/01/2025 Read more

SPC Aug 1, 2025 1930 UTC Day 3 Severe Thunderstorm Outlook

1 month 2 weeks ago
SPC 1930Z Day 3 Outlook
Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0217 PM CDT Fri Aug 01 2025 Valid 031200Z - 041200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS ACROSS PORTIONS OF THE HIGH PLAINS... ...SUMMARY... Isolated to widely scattered thunderstorms are possible in the High Plains during the afternoon Sunday. Some storms may produce large hail and severe wind gusts. ...Synopsis... Ridging aloft will continue in Southwest/Great Basin on Sunday. A shortwave trough will move into the Northwest into the northern Great Basin by late afternoon into the evening. An MCV evolving out of High Plains convection on Saturday appears probable in the southern Plains. Some mid-level flow enhancement will continue over the central/southern Rockies. ...Southern High Plains into Northwest Texas... Some convection may be ongoing early Sunday morning in association with an MCV. There is some potential for this activity to reintensify as surface heating increases. However, model guidance has been uniform in dissipating this convection before that occurs. To its west, the lee trough and an outflow boundary will potentially promote convective development later in the afternoon. With the Southwest ridge amplifying and the region being in the wake of the earlier convection/MCV, there is still some uncertainty as to how much convection will develop. The environment, however, will be supportive of organized storms. 40-50 kts of northwesterly shear would result in supercells. Large hail and severe gusts would be the main threats, but augmented low-level shear along the outflow could promote some tornado risk. Some upscale growth would be expected by evening as a modest low-level jet develops in the Permian Basin/South Plains. Higher probabilities may be needed if confidence increases in storm development and coverage. ...Central into Northern High Plains... With moisture remaining up against the terrain, additional strong to severe storms are possible from eastern Colorado into eastern Wyoming and the Black Hills. Aside from the terrain, the weak surface trough will also serve as a focus for convective development. Shear will generally be weaker in these areas, but around 25-30 kts of effective shear could promote a few marginal supercells and multicell clusters. Storms may not remain organized for a long duration as upper-level flow is weak. The strongest activity could produce large hail and severe wind gusts. ...Oregon... With the approach of the trough, scattered storms are possible in central Oregon in the Blue Mountains. Though buoyancy will be limited, adequate effective shear could promote marginally organized storms. Severe wind gusts would be the main hazard given inverted-v profiles. Confidence in the coverage of strong to severe storms is too low for highlights at this time. ..Wendt.. 08/01/2025 Read more
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