SPC Feb 25, 2025 0700 UTC Day 2 Convective Outlook

6 months ago
SPC 0700Z Day 2 Outlook
Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1250 AM CST Tue Feb 25 2025 Valid 261200Z - 271200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Isolated thunderstorms are possible from north Texas to the Ohio Valley on Wednesday. ...Discussion... A mid-level trough will amplify as it moves from the Upper Midwest into the Lower Great Lakes and Ohio Valley on Wednesday. A surface cold front will accompany this trough as it moves south through the day. Moisture will be mostly limited, but there may be enough for some weak instability from north Texas to the Ohio Valley. As isentropic ascent and convergence along the cold front intensify, isolated thunderstorms may develop during the afternoon. Any thunderstorm activity should be mostly diurnally driven as elevated instability will be minimal after sunset. ..Bentley.. 02/25/2025 Read more

SPC Feb 25, 2025 0600 UTC Day 1 Convective Outlook

6 months ago
SPC 1200Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1127 PM CST Mon Feb 24 2025 Valid 251200Z - 261200Z ...NO THUNDERSTORM AREAS FORECAST... ...SUMMARY... Thunderstorm probabilities are less than 10 percent across the lower 48 States today. ...Discussion... Strong upper trough is moving onshore along the Pacific Northwest Coast early this morning. This feature will deamplify a bit as it digs southeast across the northern Rockies into the central Plains/upper MS Valley region by the end of the period. As this short wave shifts inland, surface pressures will build over the northern Rockies/Great Basin forcing a cold front into the eastern Dakotas-central NE-central CO by 26/00z. Large-scale forcing ahead of this feature will contribute to mid-level moistening within a steep lapse rate environment. Forecast soundings along/near the frontal zone suggest weak mid-level buoyancy, likely sufficient for at least shallow elevated convection. While a few of the strongest updrafts may penetrate levels necessary for lightning discharge, current thinking is the probability for thunderstorms is too low to warrant a risk this period. ..Darrow/Thornton.. 02/25/2025 Read more

SPC Feb 25, 2025 0600 UTC Day 1 Convective Outlook

6 months ago
SPC 1200Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1127 PM CST Mon Feb 24 2025 Valid 251200Z - 261200Z ...NO THUNDERSTORM AREAS FORECAST... ...SUMMARY... Thunderstorm probabilities are less than 10 percent across the lower 48 States today. ...Discussion... Strong upper trough is moving onshore along the Pacific Northwest Coast early this morning. This feature will deamplify a bit as it digs southeast across the northern Rockies into the central Plains/upper MS Valley region by the end of the period. As this short wave shifts inland, surface pressures will build over the northern Rockies/Great Basin forcing a cold front into the eastern Dakotas-central NE-central CO by 26/00z. Large-scale forcing ahead of this feature will contribute to mid-level moistening within a steep lapse rate environment. Forecast soundings along/near the frontal zone suggest weak mid-level buoyancy, likely sufficient for at least shallow elevated convection. While a few of the strongest updrafts may penetrate levels necessary for lightning discharge, current thinking is the probability for thunderstorms is too low to warrant a risk this period. ..Darrow/Thornton.. 02/25/2025 Read more

SPC Feb 25, 2025 0600 UTC Day 1 Convective Outlook

6 months ago
SPC 1200Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1127 PM CST Mon Feb 24 2025 Valid 251200Z - 261200Z ...NO THUNDERSTORM AREAS FORECAST... ...SUMMARY... Thunderstorm probabilities are less than 10 percent across the lower 48 States today. ...Discussion... Strong upper trough is moving onshore along the Pacific Northwest Coast early this morning. This feature will deamplify a bit as it digs southeast across the northern Rockies into the central Plains/upper MS Valley region by the end of the period. As this short wave shifts inland, surface pressures will build over the northern Rockies/Great Basin forcing a cold front into the eastern Dakotas-central NE-central CO by 26/00z. Large-scale forcing ahead of this feature will contribute to mid-level moistening within a steep lapse rate environment. Forecast soundings along/near the frontal zone suggest weak mid-level buoyancy, likely sufficient for at least shallow elevated convection. While a few of the strongest updrafts may penetrate levels necessary for lightning discharge, current thinking is the probability for thunderstorms is too low to warrant a risk this period. ..Darrow/Thornton.. 02/25/2025 Read more

SPC Feb 25, 2025 0600 UTC Day 1 Convective Outlook

6 months ago
SPC 1200Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1127 PM CST Mon Feb 24 2025 Valid 251200Z - 261200Z ...NO THUNDERSTORM AREAS FORECAST... ...SUMMARY... Thunderstorm probabilities are less than 10 percent across the lower 48 States today. ...Discussion... Strong upper trough is moving onshore along the Pacific Northwest Coast early this morning. This feature will deamplify a bit as it digs southeast across the northern Rockies into the central Plains/upper MS Valley region by the end of the period. As this short wave shifts inland, surface pressures will build over the northern Rockies/Great Basin forcing a cold front into the eastern Dakotas-central NE-central CO by 26/00z. Large-scale forcing ahead of this feature will contribute to mid-level moistening within a steep lapse rate environment. Forecast soundings along/near the frontal zone suggest weak mid-level buoyancy, likely sufficient for at least shallow elevated convection. While a few of the strongest updrafts may penetrate levels necessary for lightning discharge, current thinking is the probability for thunderstorms is too low to warrant a risk this period. ..Darrow/Thornton.. 02/25/2025 Read more

SPC Feb 25, 2025 0600 UTC Day 1 Convective Outlook

6 months ago
SPC 1200Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1127 PM CST Mon Feb 24 2025 Valid 251200Z - 261200Z ...NO THUNDERSTORM AREAS FORECAST... ...SUMMARY... Thunderstorm probabilities are less than 10 percent across the lower 48 States today. ...Discussion... Strong upper trough is moving onshore along the Pacific Northwest Coast early this morning. This feature will deamplify a bit as it digs southeast across the northern Rockies into the central Plains/upper MS Valley region by the end of the period. As this short wave shifts inland, surface pressures will build over the northern Rockies/Great Basin forcing a cold front into the eastern Dakotas-central NE-central CO by 26/00z. Large-scale forcing ahead of this feature will contribute to mid-level moistening within a steep lapse rate environment. Forecast soundings along/near the frontal zone suggest weak mid-level buoyancy, likely sufficient for at least shallow elevated convection. While a few of the strongest updrafts may penetrate levels necessary for lightning discharge, current thinking is the probability for thunderstorms is too low to warrant a risk this period. ..Darrow/Thornton.. 02/25/2025 Read more

SPC Feb 25, 2025 0600 UTC Day 1 Convective Outlook

6 months ago
SPC 1200Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1127 PM CST Mon Feb 24 2025 Valid 251200Z - 261200Z ...NO THUNDERSTORM AREAS FORECAST... ...SUMMARY... Thunderstorm probabilities are less than 10 percent across the lower 48 States today. ...Discussion... Strong upper trough is moving onshore along the Pacific Northwest Coast early this morning. This feature will deamplify a bit as it digs southeast across the northern Rockies into the central Plains/upper MS Valley region by the end of the period. As this short wave shifts inland, surface pressures will build over the northern Rockies/Great Basin forcing a cold front into the eastern Dakotas-central NE-central CO by 26/00z. Large-scale forcing ahead of this feature will contribute to mid-level moistening within a steep lapse rate environment. Forecast soundings along/near the frontal zone suggest weak mid-level buoyancy, likely sufficient for at least shallow elevated convection. While a few of the strongest updrafts may penetrate levels necessary for lightning discharge, current thinking is the probability for thunderstorms is too low to warrant a risk this period. ..Darrow/Thornton.. 02/25/2025 Read more

SPC MD 119

6 months ago
MD 0119 CONCERNING SEVERE POTENTIAL...WATCH UNLIKELY FOR NORTHERN OREGON...SOUTHERN WASHINGTON
Mesoscale Discussion 0119 NWS Storm Prediction Center Norman OK 0643 PM CST Mon Feb 24 2025 Areas affected...Northern Oregon...Southern Washington Concerning...Severe potential...Watch unlikely Valid 250043Z - 250245Z Probability of Watch Issuance...5 percent SUMMARY...Potential for a few gusts, some of which could be severe, over the next few hours. DISCUSSION...Thunderstorm activity is ongoing, with two more organized bands noted near the Portland Metro and across the Columbia Gorge. Though thermal profiles are poor, strong upper level forcing from a mid-level jet max is overspreading the region amid some MLCAPE around 100-240 J/kg. The increase in winds aloft can be noted in the VAD from RTX (Portland, OR), where speeds up to 50-60 kts are observed in the bottom 3 km. A few gusts around 50 mph were observed earlier in reporting sites near the Oregon coast. Steep low to mid-level lapse rates are also in place regionally, with forecast soundings from the NAM/RAP suggesting profiles are deeply mixed. This will allow for potential for even low topped showers to mix down higher momentum gusts at times, some of which may approach severe limits. Given the rapid loss of daytime heating and poor thermal environment, this is expected to remain localized and a watch is unlikely to be needed. ..Thornton/Guyer.. 02/25/2025 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...OTX...PDT...PQR... LAT...LON 45522382 46112285 46352052 46991884 46871803 46621746 46201733 45731752 45311821 45071927 44862103 44582318 45522382 Read more

SPC Feb 25, 2025 0100 UTC Day 1 Convective Outlook

6 months ago
SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0644 PM CST Mon Feb 24 2025 Valid 250100Z - 251200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF THE PACIFIC NORTHWEST...AND OVER SOUTH FLORIDA... ...SUMMARY... Scattered storms remain possible across the Florida Keys/far southern Florida this evening. Localized damaging gusts or a brief tornado may occur. Isolated strong wind gusts are also possible across parts of the Pacific Northwest. ...01z Update... Strong 12hr mid-level height falls are spreading across the Pacific Northwest in response to a progressive trough that will advance inland after 06z. 100+kt 500mb jet will translate across southern OR and weaken late tonight as it shifts east with the short wave. Scattered convection is currently noted ahead of the main jet core, with lightning observed in the deeper updrafts, extending from off the OR Coast into southwest WA. Isolated strong wind gusts have been observed with this activity, and steep lapse rates appear somewhat favorable for allowing strong flow just off the surface to mix down. Have extended 5 percent severe wind probabilities to the WA/OR Coast to account for this scenario, primarily this evening. Low-latitude short-wave trough is digging southeast across the central Gulf Basin. Low-level warm advection persists ahead of this feature across south FL where a considerable amount of weak convection is currently noted. Strong 0-6km bulk shear favors the possibility for updraft organization, but poor lapse rates are limiting buoyancy, and low-level shear is mostly weak. Will maintain a MRGL Risk for the possibility of a wind gust or brief tornado. ..Darrow.. 02/25/2025 Read more

SPC Feb 25, 2025 0100 UTC Day 1 Convective Outlook

6 months ago
SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0644 PM CST Mon Feb 24 2025 Valid 250100Z - 251200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF THE PACIFIC NORTHWEST...AND OVER SOUTH FLORIDA... ...SUMMARY... Scattered storms remain possible across the Florida Keys/far southern Florida this evening. Localized damaging gusts or a brief tornado may occur. Isolated strong wind gusts are also possible across parts of the Pacific Northwest. ...01z Update... Strong 12hr mid-level height falls are spreading across the Pacific Northwest in response to a progressive trough that will advance inland after 06z. 100+kt 500mb jet will translate across southern OR and weaken late tonight as it shifts east with the short wave. Scattered convection is currently noted ahead of the main jet core, with lightning observed in the deeper updrafts, extending from off the OR Coast into southwest WA. Isolated strong wind gusts have been observed with this activity, and steep lapse rates appear somewhat favorable for allowing strong flow just off the surface to mix down. Have extended 5 percent severe wind probabilities to the WA/OR Coast to account for this scenario, primarily this evening. Low-latitude short-wave trough is digging southeast across the central Gulf Basin. Low-level warm advection persists ahead of this feature across south FL where a considerable amount of weak convection is currently noted. Strong 0-6km bulk shear favors the possibility for updraft organization, but poor lapse rates are limiting buoyancy, and low-level shear is mostly weak. Will maintain a MRGL Risk for the possibility of a wind gust or brief tornado. ..Darrow.. 02/25/2025 Read more

SPC Feb 25, 2025 0100 UTC Day 1 Convective Outlook

6 months ago
SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0644 PM CST Mon Feb 24 2025 Valid 250100Z - 251200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF THE PACIFIC NORTHWEST...AND OVER SOUTH FLORIDA... ...SUMMARY... Scattered storms remain possible across the Florida Keys/far southern Florida this evening. Localized damaging gusts or a brief tornado may occur. Isolated strong wind gusts are also possible across parts of the Pacific Northwest. ...01z Update... Strong 12hr mid-level height falls are spreading across the Pacific Northwest in response to a progressive trough that will advance inland after 06z. 100+kt 500mb jet will translate across southern OR and weaken late tonight as it shifts east with the short wave. Scattered convection is currently noted ahead of the main jet core, with lightning observed in the deeper updrafts, extending from off the OR Coast into southwest WA. Isolated strong wind gusts have been observed with this activity, and steep lapse rates appear somewhat favorable for allowing strong flow just off the surface to mix down. Have extended 5 percent severe wind probabilities to the WA/OR Coast to account for this scenario, primarily this evening. Low-latitude short-wave trough is digging southeast across the central Gulf Basin. Low-level warm advection persists ahead of this feature across south FL where a considerable amount of weak convection is currently noted. Strong 0-6km bulk shear favors the possibility for updraft organization, but poor lapse rates are limiting buoyancy, and low-level shear is mostly weak. Will maintain a MRGL Risk for the possibility of a wind gust or brief tornado. ..Darrow.. 02/25/2025 Read more

SPC Feb 25, 2025 0100 UTC Day 1 Convective Outlook

6 months ago
SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0644 PM CST Mon Feb 24 2025 Valid 250100Z - 251200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF THE PACIFIC NORTHWEST...AND OVER SOUTH FLORIDA... ...SUMMARY... Scattered storms remain possible across the Florida Keys/far southern Florida this evening. Localized damaging gusts or a brief tornado may occur. Isolated strong wind gusts are also possible across parts of the Pacific Northwest. ...01z Update... Strong 12hr mid-level height falls are spreading across the Pacific Northwest in response to a progressive trough that will advance inland after 06z. 100+kt 500mb jet will translate across southern OR and weaken late tonight as it shifts east with the short wave. Scattered convection is currently noted ahead of the main jet core, with lightning observed in the deeper updrafts, extending from off the OR Coast into southwest WA. Isolated strong wind gusts have been observed with this activity, and steep lapse rates appear somewhat favorable for allowing strong flow just off the surface to mix down. Have extended 5 percent severe wind probabilities to the WA/OR Coast to account for this scenario, primarily this evening. Low-latitude short-wave trough is digging southeast across the central Gulf Basin. Low-level warm advection persists ahead of this feature across south FL where a considerable amount of weak convection is currently noted. Strong 0-6km bulk shear favors the possibility for updraft organization, but poor lapse rates are limiting buoyancy, and low-level shear is mostly weak. Will maintain a MRGL Risk for the possibility of a wind gust or brief tornado. ..Darrow.. 02/25/2025 Read more

SPC Day 3-8 Fire Weather Outlook

6 months ago
SPC Day 3-8 Fire Weather Outlook
Day 3-8 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0308 PM CST Mon Feb 24 2025 Valid 261200Z - 041200Z Fire weather concerns will remain limited through the middle portion of the work week before increasing across the Southwest and southern High Plains beginning on D5/Friday through early next week. The general trend depicted in long-range guidance over the past several days continues to hold with an upper-level regime change anticipated heading into early March. Anomalously strong upper ridging over the western CONUS will gradually break down through the end of the current work week followed by a transition to a more progressive regime characterized by higher-amplitude upper troughs meandering across the Southwest and southern CONUS. As this occurs, robust surface cyclogenesis will become more probable across the Four Corners/Plains, resulting in strengthening winds over a region that has seen little precipitation over the past 1-2 weeks and increasing ERC values/fuel dryness. Elevated to critical fire weather conditions appear possible each day from eastern AZ to western TX beginning D5/Friday through D8/Tuesday, though confidence in the potential on any given day remains somewhat low. While the GFS/ECMWF both generally show the same evolution of the synoptic regime and the potential for fire weather concerns, considerable discrepancies regarding the timing and placement of upper-troughs and attendant surface features are noted. Additionally, GEFS/ECENS guidance appears to be too tightly clustered around their respective deterministic solutions, leading to limited confidence that the most probable scenario is being accurately captured by guidance at this range. For this reason, highlights are withheld, but will likely be needed in future forecast updates. ..Moore.. 02/24/2025 ...Please see www.spc.noaa.gov/fire for graphic product... Read more

SPC Day 3-8 Fire Weather Outlook

6 months ago
SPC Day 3-8 Fire Weather Outlook
Day 3-8 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0308 PM CST Mon Feb 24 2025 Valid 261200Z - 041200Z Fire weather concerns will remain limited through the middle portion of the work week before increasing across the Southwest and southern High Plains beginning on D5/Friday through early next week. The general trend depicted in long-range guidance over the past several days continues to hold with an upper-level regime change anticipated heading into early March. Anomalously strong upper ridging over the western CONUS will gradually break down through the end of the current work week followed by a transition to a more progressive regime characterized by higher-amplitude upper troughs meandering across the Southwest and southern CONUS. As this occurs, robust surface cyclogenesis will become more probable across the Four Corners/Plains, resulting in strengthening winds over a region that has seen little precipitation over the past 1-2 weeks and increasing ERC values/fuel dryness. Elevated to critical fire weather conditions appear possible each day from eastern AZ to western TX beginning D5/Friday through D8/Tuesday, though confidence in the potential on any given day remains somewhat low. While the GFS/ECMWF both generally show the same evolution of the synoptic regime and the potential for fire weather concerns, considerable discrepancies regarding the timing and placement of upper-troughs and attendant surface features are noted. Additionally, GEFS/ECENS guidance appears to be too tightly clustered around their respective deterministic solutions, leading to limited confidence that the most probable scenario is being accurately captured by guidance at this range. For this reason, highlights are withheld, but will likely be needed in future forecast updates. ..Moore.. 02/24/2025 ...Please see www.spc.noaa.gov/fire for graphic product... Read more

SPC Day 3-8 Fire Weather Outlook

6 months ago
SPC Day 3-8 Fire Weather Outlook
Day 3-8 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0308 PM CST Mon Feb 24 2025 Valid 261200Z - 041200Z Fire weather concerns will remain limited through the middle portion of the work week before increasing across the Southwest and southern High Plains beginning on D5/Friday through early next week. The general trend depicted in long-range guidance over the past several days continues to hold with an upper-level regime change anticipated heading into early March. Anomalously strong upper ridging over the western CONUS will gradually break down through the end of the current work week followed by a transition to a more progressive regime characterized by higher-amplitude upper troughs meandering across the Southwest and southern CONUS. As this occurs, robust surface cyclogenesis will become more probable across the Four Corners/Plains, resulting in strengthening winds over a region that has seen little precipitation over the past 1-2 weeks and increasing ERC values/fuel dryness. Elevated to critical fire weather conditions appear possible each day from eastern AZ to western TX beginning D5/Friday through D8/Tuesday, though confidence in the potential on any given day remains somewhat low. While the GFS/ECMWF both generally show the same evolution of the synoptic regime and the potential for fire weather concerns, considerable discrepancies regarding the timing and placement of upper-troughs and attendant surface features are noted. Additionally, GEFS/ECENS guidance appears to be too tightly clustered around their respective deterministic solutions, leading to limited confidence that the most probable scenario is being accurately captured by guidance at this range. For this reason, highlights are withheld, but will likely be needed in future forecast updates. ..Moore.. 02/24/2025 ...Please see www.spc.noaa.gov/fire for graphic product... Read more

SPC Day 3-8 Fire Weather Outlook

6 months ago
SPC Day 3-8 Fire Weather Outlook
Day 3-8 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0308 PM CST Mon Feb 24 2025 Valid 261200Z - 041200Z Fire weather concerns will remain limited through the middle portion of the work week before increasing across the Southwest and southern High Plains beginning on D5/Friday through early next week. The general trend depicted in long-range guidance over the past several days continues to hold with an upper-level regime change anticipated heading into early March. Anomalously strong upper ridging over the western CONUS will gradually break down through the end of the current work week followed by a transition to a more progressive regime characterized by higher-amplitude upper troughs meandering across the Southwest and southern CONUS. As this occurs, robust surface cyclogenesis will become more probable across the Four Corners/Plains, resulting in strengthening winds over a region that has seen little precipitation over the past 1-2 weeks and increasing ERC values/fuel dryness. Elevated to critical fire weather conditions appear possible each day from eastern AZ to western TX beginning D5/Friday through D8/Tuesday, though confidence in the potential on any given day remains somewhat low. While the GFS/ECMWF both generally show the same evolution of the synoptic regime and the potential for fire weather concerns, considerable discrepancies regarding the timing and placement of upper-troughs and attendant surface features are noted. Additionally, GEFS/ECENS guidance appears to be too tightly clustered around their respective deterministic solutions, leading to limited confidence that the most probable scenario is being accurately captured by guidance at this range. For this reason, highlights are withheld, but will likely be needed in future forecast updates. ..Moore.. 02/24/2025 ...Please see www.spc.noaa.gov/fire for graphic product... Read more

SPC Day 3-8 Fire Weather Outlook

6 months ago
SPC Day 3-8 Fire Weather Outlook
Day 3-8 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0308 PM CST Mon Feb 24 2025 Valid 261200Z - 041200Z Fire weather concerns will remain limited through the middle portion of the work week before increasing across the Southwest and southern High Plains beginning on D5/Friday through early next week. The general trend depicted in long-range guidance over the past several days continues to hold with an upper-level regime change anticipated heading into early March. Anomalously strong upper ridging over the western CONUS will gradually break down through the end of the current work week followed by a transition to a more progressive regime characterized by higher-amplitude upper troughs meandering across the Southwest and southern CONUS. As this occurs, robust surface cyclogenesis will become more probable across the Four Corners/Plains, resulting in strengthening winds over a region that has seen little precipitation over the past 1-2 weeks and increasing ERC values/fuel dryness. Elevated to critical fire weather conditions appear possible each day from eastern AZ to western TX beginning D5/Friday through D8/Tuesday, though confidence in the potential on any given day remains somewhat low. While the GFS/ECMWF both generally show the same evolution of the synoptic regime and the potential for fire weather concerns, considerable discrepancies regarding the timing and placement of upper-troughs and attendant surface features are noted. Additionally, GEFS/ECENS guidance appears to be too tightly clustered around their respective deterministic solutions, leading to limited confidence that the most probable scenario is being accurately captured by guidance at this range. For this reason, highlights are withheld, but will likely be needed in future forecast updates. ..Moore.. 02/24/2025 ...Please see www.spc.noaa.gov/fire for graphic product... Read more

SPC Day 3-8 Fire Weather Outlook

6 months ago
SPC Day 3-8 Fire Weather Outlook
Day 3-8 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0308 PM CST Mon Feb 24 2025 Valid 261200Z - 041200Z Fire weather concerns will remain limited through the middle portion of the work week before increasing across the Southwest and southern High Plains beginning on D5/Friday through early next week. The general trend depicted in long-range guidance over the past several days continues to hold with an upper-level regime change anticipated heading into early March. Anomalously strong upper ridging over the western CONUS will gradually break down through the end of the current work week followed by a transition to a more progressive regime characterized by higher-amplitude upper troughs meandering across the Southwest and southern CONUS. As this occurs, robust surface cyclogenesis will become more probable across the Four Corners/Plains, resulting in strengthening winds over a region that has seen little precipitation over the past 1-2 weeks and increasing ERC values/fuel dryness. Elevated to critical fire weather conditions appear possible each day from eastern AZ to western TX beginning D5/Friday through D8/Tuesday, though confidence in the potential on any given day remains somewhat low. While the GFS/ECMWF both generally show the same evolution of the synoptic regime and the potential for fire weather concerns, considerable discrepancies regarding the timing and placement of upper-troughs and attendant surface features are noted. Additionally, GEFS/ECENS guidance appears to be too tightly clustered around their respective deterministic solutions, leading to limited confidence that the most probable scenario is being accurately captured by guidance at this range. For this reason, highlights are withheld, but will likely be needed in future forecast updates. ..Moore.. 02/24/2025 ...Please see www.spc.noaa.gov/fire for graphic product... Read more
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