Severe Storms

SPC Day 2 Fire Weather Outlook
Day 2 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0148 PM CST Mon Jan 22 2024 Valid 231200Z - 241200Z ...NO CRITICAL AREAS... No changes. See previous discussion below. ..Bentley.. 01/22/2024 .PREV DISCUSSION... /ISSUED 1022 PM CST Sun Jan 21 2024/ ...Synopsis... A trough will remain in place across the western/central US with continued cool and moist conditions extending into the eastern US by late Tuesday. Given the cool and moist conditions across these regions, along with snow pack in place across the northern US, wildfire spread potential will remain low on Tuesday. ...Please see www.spc.noaa.gov/fire for graphic product... Read more

SPC Day 2 Fire Weather Outlook
Day 2 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0148 PM CST Mon Jan 22 2024 Valid 231200Z - 241200Z ...NO CRITICAL AREAS... No changes. See previous discussion below. ..Bentley.. 01/22/2024 .PREV DISCUSSION... /ISSUED 1022 PM CST Sun Jan 21 2024/ ...Synopsis... A trough will remain in place across the western/central US with continued cool and moist conditions extending into the eastern US by late Tuesday. Given the cool and moist conditions across these regions, along with snow pack in place across the northern US, wildfire spread potential will remain low on Tuesday. ...Please see www.spc.noaa.gov/fire for graphic product... Read more

SPC Day 2 Fire Weather Outlook
Day 2 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0148 PM CST Mon Jan 22 2024 Valid 231200Z - 241200Z ...NO CRITICAL AREAS... No changes. See previous discussion below. ..Bentley.. 01/22/2024 .PREV DISCUSSION... /ISSUED 1022 PM CST Sun Jan 21 2024/ ...Synopsis... A trough will remain in place across the western/central US with continued cool and moist conditions extending into the eastern US by late Tuesday. Given the cool and moist conditions across these regions, along with snow pack in place across the northern US, wildfire spread potential will remain low on Tuesday. ...Please see www.spc.noaa.gov/fire for graphic product... Read more

SPC Day 2 Fire Weather Outlook
Day 2 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0148 PM CST Mon Jan 22 2024 Valid 231200Z - 241200Z ...NO CRITICAL AREAS... No changes. See previous discussion below. ..Bentley.. 01/22/2024 .PREV DISCUSSION... /ISSUED 1022 PM CST Sun Jan 21 2024/ ...Synopsis... A trough will remain in place across the western/central US with continued cool and moist conditions extending into the eastern US by late Tuesday. Given the cool and moist conditions across these regions, along with snow pack in place across the northern US, wildfire spread potential will remain low on Tuesday. ...Please see www.spc.noaa.gov/fire for graphic product... Read more

SPC Day 2 Fire Weather Outlook
Day 2 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0148 PM CST Mon Jan 22 2024 Valid 231200Z - 241200Z ...NO CRITICAL AREAS... No changes. See previous discussion below. ..Bentley.. 01/22/2024 .PREV DISCUSSION... /ISSUED 1022 PM CST Sun Jan 21 2024/ ...Synopsis... A trough will remain in place across the western/central US with continued cool and moist conditions extending into the eastern US by late Tuesday. Given the cool and moist conditions across these regions, along with snow pack in place across the northern US, wildfire spread potential will remain low on Tuesday. ...Please see www.spc.noaa.gov/fire for graphic product... Read more

MD 0083 CONCERNING FREEZING RAIN FOR PORTIONS OF EASTERN/NORTHEASTERN IL...NORTHERN IN...FAR SOUTHERN MI AND FAR NORTHWEST OH
Mesoscale Discussion 0083 NWS Storm Prediction Center Norman OK 0917 AM CST Mon Jan 22 2024 Areas affected...portions of eastern/northeastern IL...northern IN...far southern MI and far northwest OH Concerning...Freezing rain Valid 221517Z - 221915Z SUMMARY...Light to moderate freezing rain is expected through the morning hours with rates of 0.01-0.03 in/hr possible. Some mixed-phase precipitation is also possible early. DISCUSSION...As of 15 UTC, regional radar mosaic imagery and surface observations showed a broad area of light to moderate wintry precipitation across parts of northeastern IL. Over the last hour, automated reports of unknown precipitation type and freezing rain have gradually become more numerous as the precipitation has expanded over an air mass with surface temperatures in the mid to upper 20s F. Driven primarily by low-level warm advection, light to moderate precipitation is expected to continue to move east/northeast this morning. Light snow has been observed across parts of southwest lower MI and northwest IN. However, observed and modified model soundings show an elevated warm nose of 1-2 C between 1-2 km AGL will gradually advect northeastward over the next few hours. While some snow and sleet are possible ahead of the main area of precipitation, gradually deepening of the elevated warm layer to near 600-800 m will favor a transition to predominately freezing rain. Rain rates of 0.01-0.03 in/hr are possible above favorable surface temperatures for rapid ice accretion. The most likely corridor for impactful freezing rain appears to be from northeastern IL into northwest IN and far southwest lower MI through this morning. Hi-res CAM guidance has been poor thus far in handling the evolution of the precipitation field. While low-level warm advection may wane slightly through the day, observed low and mid-level ascent appears strong enough to continue to support precipitation into the early afternoon. Given the cold surface temperatures and melting layer aloft, freezing rain appears likely. ..Lyons.. 01/22/2024 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...DTX...IWX...GRR...IND...LOT...ILX...DVN... LAT...LON 40838938 41758869 42098776 42128766 42468617 42558533 42498463 42328424 42038397 41788398 41508429 41208475 40658550 39528694 39268766 39638852 39848874 40838938 Read more

SPC 1730Z Day 2 Outlook
Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1127 AM CST Mon Jan 22 2024 Valid 231200Z - 241200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS FROM SOUTH-CENTRAL AND EAST TX INTO WESTERN/NORTHERN LA... ...SUMMARY... Isolated strong to severe thunderstorms will be possible Tuesday into Tuesday night across parts of south-central into east Texas and western/northern Louisiana. ...South-central/east TX into western/northern LA... A mid/upper-level trough will move only slowly eastward across the Southwest into the southern Plains on Tuesday. Within the larger-scale trough, multiple shortwaves will emanate from northern Mexico and generally move northeastward toward the ArkLaTex region. This pattern will result in multiple rounds of thunderstorms across parts of TX/LA, as rich low-level moisture streams inland from the Gulf of Mexico. Severe-thunderstorm potential remains somewhat unclear within this regime. However, increasing low-level and deep-layer shear will become favorable for organized convection within the broad warm-advection regime from the TX coastal plain into parts of LA. While instability will likely remain rather weak near/north of the effective warm front, the favorable wind profiles and increasing moisture may support the development of at least transient supercells or bowing segments within a large cluster of convection that is expected to move from east TX into LA through the day. Some threat for locally damaging winds and possibly a tornado may evolve if any organized storm structures can be sustained. Tuesday evening into the overnight hours, another ejecting shortwave may aid in redevelopment of convection from south-central TX toward the mid/upper TX Coast. This could lead to isolated elevated supercell development across south-central TX, and some potential for near-surface-based supercell development near the coast by early Wednesday morning. ..Dean.. 01/22/2024 Read more

SPC 1730Z Day 2 Outlook
Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1127 AM CST Mon Jan 22 2024 Valid 231200Z - 241200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS FROM SOUTH-CENTRAL AND EAST TX INTO WESTERN/NORTHERN LA... ...SUMMARY... Isolated strong to severe thunderstorms will be possible Tuesday into Tuesday night across parts of south-central into east Texas and western/northern Louisiana. ...South-central/east TX into western/northern LA... A mid/upper-level trough will move only slowly eastward across the Southwest into the southern Plains on Tuesday. Within the larger-scale trough, multiple shortwaves will emanate from northern Mexico and generally move northeastward toward the ArkLaTex region. This pattern will result in multiple rounds of thunderstorms across parts of TX/LA, as rich low-level moisture streams inland from the Gulf of Mexico. Severe-thunderstorm potential remains somewhat unclear within this regime. However, increasing low-level and deep-layer shear will become favorable for organized convection within the broad warm-advection regime from the TX coastal plain into parts of LA. While instability will likely remain rather weak near/north of the effective warm front, the favorable wind profiles and increasing moisture may support the development of at least transient supercells or bowing segments within a large cluster of convection that is expected to move from east TX into LA through the day. Some threat for locally damaging winds and possibly a tornado may evolve if any organized storm structures can be sustained. Tuesday evening into the overnight hours, another ejecting shortwave may aid in redevelopment of convection from south-central TX toward the mid/upper TX Coast. This could lead to isolated elevated supercell development across south-central TX, and some potential for near-surface-based supercell development near the coast by early Wednesday morning. ..Dean.. 01/22/2024 Read more

SPC 1730Z Day 2 Outlook
Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1127 AM CST Mon Jan 22 2024 Valid 231200Z - 241200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS FROM SOUTH-CENTRAL AND EAST TX INTO WESTERN/NORTHERN LA... ...SUMMARY... Isolated strong to severe thunderstorms will be possible Tuesday into Tuesday night across parts of south-central into east Texas and western/northern Louisiana. ...South-central/east TX into western/northern LA... A mid/upper-level trough will move only slowly eastward across the Southwest into the southern Plains on Tuesday. Within the larger-scale trough, multiple shortwaves will emanate from northern Mexico and generally move northeastward toward the ArkLaTex region. This pattern will result in multiple rounds of thunderstorms across parts of TX/LA, as rich low-level moisture streams inland from the Gulf of Mexico. Severe-thunderstorm potential remains somewhat unclear within this regime. However, increasing low-level and deep-layer shear will become favorable for organized convection within the broad warm-advection regime from the TX coastal plain into parts of LA. While instability will likely remain rather weak near/north of the effective warm front, the favorable wind profiles and increasing moisture may support the development of at least transient supercells or bowing segments within a large cluster of convection that is expected to move from east TX into LA through the day. Some threat for locally damaging winds and possibly a tornado may evolve if any organized storm structures can be sustained. Tuesday evening into the overnight hours, another ejecting shortwave may aid in redevelopment of convection from south-central TX toward the mid/upper TX Coast. This could lead to isolated elevated supercell development across south-central TX, and some potential for near-surface-based supercell development near the coast by early Wednesday morning. ..Dean.. 01/22/2024 Read more

SPC 1730Z Day 2 Outlook
Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1127 AM CST Mon Jan 22 2024 Valid 231200Z - 241200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS FROM SOUTH-CENTRAL AND EAST TX INTO WESTERN/NORTHERN LA... ...SUMMARY... Isolated strong to severe thunderstorms will be possible Tuesday into Tuesday night across parts of south-central into east Texas and western/northern Louisiana. ...South-central/east TX into western/northern LA... A mid/upper-level trough will move only slowly eastward across the Southwest into the southern Plains on Tuesday. Within the larger-scale trough, multiple shortwaves will emanate from northern Mexico and generally move northeastward toward the ArkLaTex region. This pattern will result in multiple rounds of thunderstorms across parts of TX/LA, as rich low-level moisture streams inland from the Gulf of Mexico. Severe-thunderstorm potential remains somewhat unclear within this regime. However, increasing low-level and deep-layer shear will become favorable for organized convection within the broad warm-advection regime from the TX coastal plain into parts of LA. While instability will likely remain rather weak near/north of the effective warm front, the favorable wind profiles and increasing moisture may support the development of at least transient supercells or bowing segments within a large cluster of convection that is expected to move from east TX into LA through the day. Some threat for locally damaging winds and possibly a tornado may evolve if any organized storm structures can be sustained. Tuesday evening into the overnight hours, another ejecting shortwave may aid in redevelopment of convection from south-central TX toward the mid/upper TX Coast. This could lead to isolated elevated supercell development across south-central TX, and some potential for near-surface-based supercell development near the coast by early Wednesday morning. ..Dean.. 01/22/2024 Read more

SPC 1730Z Day 2 Outlook
Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1127 AM CST Mon Jan 22 2024 Valid 231200Z - 241200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS FROM SOUTH-CENTRAL AND EAST TX INTO WESTERN/NORTHERN LA... ...SUMMARY... Isolated strong to severe thunderstorms will be possible Tuesday into Tuesday night across parts of south-central into east Texas and western/northern Louisiana. ...South-central/east TX into western/northern LA... A mid/upper-level trough will move only slowly eastward across the Southwest into the southern Plains on Tuesday. Within the larger-scale trough, multiple shortwaves will emanate from northern Mexico and generally move northeastward toward the ArkLaTex region. This pattern will result in multiple rounds of thunderstorms across parts of TX/LA, as rich low-level moisture streams inland from the Gulf of Mexico. Severe-thunderstorm potential remains somewhat unclear within this regime. However, increasing low-level and deep-layer shear will become favorable for organized convection within the broad warm-advection regime from the TX coastal plain into parts of LA. While instability will likely remain rather weak near/north of the effective warm front, the favorable wind profiles and increasing moisture may support the development of at least transient supercells or bowing segments within a large cluster of convection that is expected to move from east TX into LA through the day. Some threat for locally damaging winds and possibly a tornado may evolve if any organized storm structures can be sustained. Tuesday evening into the overnight hours, another ejecting shortwave may aid in redevelopment of convection from south-central TX toward the mid/upper TX Coast. This could lead to isolated elevated supercell development across south-central TX, and some potential for near-surface-based supercell development near the coast by early Wednesday morning. ..Dean.. 01/22/2024 Read more

SPC 1730Z Day 2 Outlook
Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1127 AM CST Mon Jan 22 2024 Valid 231200Z - 241200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS FROM SOUTH-CENTRAL AND EAST TX INTO WESTERN/NORTHERN LA... ...SUMMARY... Isolated strong to severe thunderstorms will be possible Tuesday into Tuesday night across parts of south-central into east Texas and western/northern Louisiana. ...South-central/east TX into western/northern LA... A mid/upper-level trough will move only slowly eastward across the Southwest into the southern Plains on Tuesday. Within the larger-scale trough, multiple shortwaves will emanate from northern Mexico and generally move northeastward toward the ArkLaTex region. This pattern will result in multiple rounds of thunderstorms across parts of TX/LA, as rich low-level moisture streams inland from the Gulf of Mexico. Severe-thunderstorm potential remains somewhat unclear within this regime. However, increasing low-level and deep-layer shear will become favorable for organized convection within the broad warm-advection regime from the TX coastal plain into parts of LA. While instability will likely remain rather weak near/north of the effective warm front, the favorable wind profiles and increasing moisture may support the development of at least transient supercells or bowing segments within a large cluster of convection that is expected to move from east TX into LA through the day. Some threat for locally damaging winds and possibly a tornado may evolve if any organized storm structures can be sustained. Tuesday evening into the overnight hours, another ejecting shortwave may aid in redevelopment of convection from south-central TX toward the mid/upper TX Coast. This could lead to isolated elevated supercell development across south-central TX, and some potential for near-surface-based supercell development near the coast by early Wednesday morning. ..Dean.. 01/22/2024 Read more

SPC 1730Z Day 2 Outlook
Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1127 AM CST Mon Jan 22 2024 Valid 231200Z - 241200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS FROM SOUTH-CENTRAL AND EAST TX INTO WESTERN/NORTHERN LA... ...SUMMARY... Isolated strong to severe thunderstorms will be possible Tuesday into Tuesday night across parts of south-central into east Texas and western/northern Louisiana. ...South-central/east TX into western/northern LA... A mid/upper-level trough will move only slowly eastward across the Southwest into the southern Plains on Tuesday. Within the larger-scale trough, multiple shortwaves will emanate from northern Mexico and generally move northeastward toward the ArkLaTex region. This pattern will result in multiple rounds of thunderstorms across parts of TX/LA, as rich low-level moisture streams inland from the Gulf of Mexico. Severe-thunderstorm potential remains somewhat unclear within this regime. However, increasing low-level and deep-layer shear will become favorable for organized convection within the broad warm-advection regime from the TX coastal plain into parts of LA. While instability will likely remain rather weak near/north of the effective warm front, the favorable wind profiles and increasing moisture may support the development of at least transient supercells or bowing segments within a large cluster of convection that is expected to move from east TX into LA through the day. Some threat for locally damaging winds and possibly a tornado may evolve if any organized storm structures can be sustained. Tuesday evening into the overnight hours, another ejecting shortwave may aid in redevelopment of convection from south-central TX toward the mid/upper TX Coast. This could lead to isolated elevated supercell development across south-central TX, and some potential for near-surface-based supercell development near the coast by early Wednesday morning. ..Dean.. 01/22/2024 Read more

SPC 1730Z Day 2 Outlook
Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1127 AM CST Mon Jan 22 2024 Valid 231200Z - 241200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS FROM SOUTH-CENTRAL AND EAST TX INTO WESTERN/NORTHERN LA... ...SUMMARY... Isolated strong to severe thunderstorms will be possible Tuesday into Tuesday night across parts of south-central into east Texas and western/northern Louisiana. ...South-central/east TX into western/northern LA... A mid/upper-level trough will move only slowly eastward across the Southwest into the southern Plains on Tuesday. Within the larger-scale trough, multiple shortwaves will emanate from northern Mexico and generally move northeastward toward the ArkLaTex region. This pattern will result in multiple rounds of thunderstorms across parts of TX/LA, as rich low-level moisture streams inland from the Gulf of Mexico. Severe-thunderstorm potential remains somewhat unclear within this regime. However, increasing low-level and deep-layer shear will become favorable for organized convection within the broad warm-advection regime from the TX coastal plain into parts of LA. While instability will likely remain rather weak near/north of the effective warm front, the favorable wind profiles and increasing moisture may support the development of at least transient supercells or bowing segments within a large cluster of convection that is expected to move from east TX into LA through the day. Some threat for locally damaging winds and possibly a tornado may evolve if any organized storm structures can be sustained. Tuesday evening into the overnight hours, another ejecting shortwave may aid in redevelopment of convection from south-central TX toward the mid/upper TX Coast. This could lead to isolated elevated supercell development across south-central TX, and some potential for near-surface-based supercell development near the coast by early Wednesday morning. ..Dean.. 01/22/2024 Read more

SPC 1630Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1036 AM CST Mon Jan 22 2024 Valid 221630Z - 231200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Severe thunderstorms are not expected. ...South-central CONUS including coastal Texas... Surface high pressure and cold stable conditions will exist over the eastern half of the CONUS, but multiple low-amplitude mid-level disturbances and a prevalent warm conveyor over the south-central CONUS toward the Ozarks/Midwest will influence widespread showers across that same region with continued elevated thunderstorm potential especially across east/southeast Texas toward Louisiana and the ArkLaTex. Weak surface-based destabilization should gradually occur near the upper Texas coast, beginning this afternoon and more so tonight. Within a favorable kinematic environment, a few stronger near-surface-based storms could occur as early as this afternoon across the upper Texas coast, but the overall severe thunderstorm potential is still expected to remain low through tonight. ...Western States... Showers and occasional lightning flashes will be possible from portions of southwest Oregon and California into southern Arizona. This convection will be associated with a pronounced mid-level trough embedded within broader cyclonic flow, with steepening lapse rates. ..Guyer/Lyons.. 01/22/2024 Read more

SPC 1630Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1036 AM CST Mon Jan 22 2024 Valid 221630Z - 231200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Severe thunderstorms are not expected. ...South-central CONUS including coastal Texas... Surface high pressure and cold stable conditions will exist over the eastern half of the CONUS, but multiple low-amplitude mid-level disturbances and a prevalent warm conveyor over the south-central CONUS toward the Ozarks/Midwest will influence widespread showers across that same region with continued elevated thunderstorm potential especially across east/southeast Texas toward Louisiana and the ArkLaTex. Weak surface-based destabilization should gradually occur near the upper Texas coast, beginning this afternoon and more so tonight. Within a favorable kinematic environment, a few stronger near-surface-based storms could occur as early as this afternoon across the upper Texas coast, but the overall severe thunderstorm potential is still expected to remain low through tonight. ...Western States... Showers and occasional lightning flashes will be possible from portions of southwest Oregon and California into southern Arizona. This convection will be associated with a pronounced mid-level trough embedded within broader cyclonic flow, with steepening lapse rates. ..Guyer/Lyons.. 01/22/2024 Read more

SPC 1630Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1036 AM CST Mon Jan 22 2024 Valid 221630Z - 231200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Severe thunderstorms are not expected. ...South-central CONUS including coastal Texas... Surface high pressure and cold stable conditions will exist over the eastern half of the CONUS, but multiple low-amplitude mid-level disturbances and a prevalent warm conveyor over the south-central CONUS toward the Ozarks/Midwest will influence widespread showers across that same region with continued elevated thunderstorm potential especially across east/southeast Texas toward Louisiana and the ArkLaTex. Weak surface-based destabilization should gradually occur near the upper Texas coast, beginning this afternoon and more so tonight. Within a favorable kinematic environment, a few stronger near-surface-based storms could occur as early as this afternoon across the upper Texas coast, but the overall severe thunderstorm potential is still expected to remain low through tonight. ...Western States... Showers and occasional lightning flashes will be possible from portions of southwest Oregon and California into southern Arizona. This convection will be associated with a pronounced mid-level trough embedded within broader cyclonic flow, with steepening lapse rates. ..Guyer/Lyons.. 01/22/2024 Read more

SPC 1630Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1036 AM CST Mon Jan 22 2024 Valid 221630Z - 231200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Severe thunderstorms are not expected. ...South-central CONUS including coastal Texas... Surface high pressure and cold stable conditions will exist over the eastern half of the CONUS, but multiple low-amplitude mid-level disturbances and a prevalent warm conveyor over the south-central CONUS toward the Ozarks/Midwest will influence widespread showers across that same region with continued elevated thunderstorm potential especially across east/southeast Texas toward Louisiana and the ArkLaTex. Weak surface-based destabilization should gradually occur near the upper Texas coast, beginning this afternoon and more so tonight. Within a favorable kinematic environment, a few stronger near-surface-based storms could occur as early as this afternoon across the upper Texas coast, but the overall severe thunderstorm potential is still expected to remain low through tonight. ...Western States... Showers and occasional lightning flashes will be possible from portions of southwest Oregon and California into southern Arizona. This convection will be associated with a pronounced mid-level trough embedded within broader cyclonic flow, with steepening lapse rates. ..Guyer/Lyons.. 01/22/2024 Read more

SPC 1630Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1036 AM CST Mon Jan 22 2024 Valid 221630Z - 231200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Severe thunderstorms are not expected. ...South-central CONUS including coastal Texas... Surface high pressure and cold stable conditions will exist over the eastern half of the CONUS, but multiple low-amplitude mid-level disturbances and a prevalent warm conveyor over the south-central CONUS toward the Ozarks/Midwest will influence widespread showers across that same region with continued elevated thunderstorm potential especially across east/southeast Texas toward Louisiana and the ArkLaTex. Weak surface-based destabilization should gradually occur near the upper Texas coast, beginning this afternoon and more so tonight. Within a favorable kinematic environment, a few stronger near-surface-based storms could occur as early as this afternoon across the upper Texas coast, but the overall severe thunderstorm potential is still expected to remain low through tonight. ...Western States... Showers and occasional lightning flashes will be possible from portions of southwest Oregon and California into southern Arizona. This convection will be associated with a pronounced mid-level trough embedded within broader cyclonic flow, with steepening lapse rates. ..Guyer/Lyons.. 01/22/2024 Read more

SPC 1630Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1036 AM CST Mon Jan 22 2024 Valid 221630Z - 231200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Severe thunderstorms are not expected. ...South-central CONUS including coastal Texas... Surface high pressure and cold stable conditions will exist over the eastern half of the CONUS, but multiple low-amplitude mid-level disturbances and a prevalent warm conveyor over the south-central CONUS toward the Ozarks/Midwest will influence widespread showers across that same region with continued elevated thunderstorm potential especially across east/southeast Texas toward Louisiana and the ArkLaTex. Weak surface-based destabilization should gradually occur near the upper Texas coast, beginning this afternoon and more so tonight. Within a favorable kinematic environment, a few stronger near-surface-based storms could occur as early as this afternoon across the upper Texas coast, but the overall severe thunderstorm potential is still expected to remain low through tonight. ...Western States... Showers and occasional lightning flashes will be possible from portions of southwest Oregon and California into southern Arizona. This convection will be associated with a pronounced mid-level trough embedded within broader cyclonic flow, with steepening lapse rates. ..Guyer/Lyons.. 01/22/2024 Read more