Severe Storms

SPC Day 2 Fire Weather Outlook
Day 2 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0134 PM CST Wed Dec 20 2023 Valid 211200Z - 221200Z ...NO CRITICAL AREAS... Increasing precipitation chances and cool to mild temperatures will keep fire-weather concerns minimal over much of the CONUS. See the previous discussion. ..Lyons.. 12/20/2023 .PREV DISCUSSION... /ISSUED 1250 AM CST Wed Dec 20 2023/ ...Synopsis... Mid-level troughs will progress across the western and central CONUS tomorrow/Thursday, supporting continued low-level moisture return and precipitation across the Plains as cooler air remains in place over the eastern CONUS and Intermountain West. When also considering the continued precipitation accumulations over California, significant wildfire-spread potential continues to appear negligible over most of the U.S. ...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 0134 PM CST Wed Dec 20 2023 Valid 211200Z - 221200Z ...NO CRITICAL AREAS... Increasing precipitation chances and cool to mild temperatures will keep fire-weather concerns minimal over much of the CONUS. See the previous discussion. ..Lyons.. 12/20/2023 .PREV DISCUSSION... /ISSUED 1250 AM CST Wed Dec 20 2023/ ...Synopsis... Mid-level troughs will progress across the western and central CONUS tomorrow/Thursday, supporting continued low-level moisture return and precipitation across the Plains as cooler air remains in place over the eastern CONUS and Intermountain West. When also considering the continued precipitation accumulations over California, significant wildfire-spread potential continues to appear negligible over most of the U.S. ...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 0134 PM CST Wed Dec 20 2023 Valid 211200Z - 221200Z ...NO CRITICAL AREAS... Increasing precipitation chances and cool to mild temperatures will keep fire-weather concerns minimal over much of the CONUS. See the previous discussion. ..Lyons.. 12/20/2023 .PREV DISCUSSION... /ISSUED 1250 AM CST Wed Dec 20 2023/ ...Synopsis... Mid-level troughs will progress across the western and central CONUS tomorrow/Thursday, supporting continued low-level moisture return and precipitation across the Plains as cooler air remains in place over the eastern CONUS and Intermountain West. When also considering the continued precipitation accumulations over California, significant wildfire-spread potential continues to appear negligible over most of the U.S. ...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 0134 PM CST Wed Dec 20 2023 Valid 211200Z - 221200Z ...NO CRITICAL AREAS... Increasing precipitation chances and cool to mild temperatures will keep fire-weather concerns minimal over much of the CONUS. See the previous discussion. ..Lyons.. 12/20/2023 .PREV DISCUSSION... /ISSUED 1250 AM CST Wed Dec 20 2023/ ...Synopsis... Mid-level troughs will progress across the western and central CONUS tomorrow/Thursday, supporting continued low-level moisture return and precipitation across the Plains as cooler air remains in place over the eastern CONUS and Intermountain West. When also considering the continued precipitation accumulations over California, significant wildfire-spread potential continues to appear negligible over most of the U.S. ...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 0134 PM CST Wed Dec 20 2023 Valid 211200Z - 221200Z ...NO CRITICAL AREAS... Increasing precipitation chances and cool to mild temperatures will keep fire-weather concerns minimal over much of the CONUS. See the previous discussion. ..Lyons.. 12/20/2023 .PREV DISCUSSION... /ISSUED 1250 AM CST Wed Dec 20 2023/ ...Synopsis... Mid-level troughs will progress across the western and central CONUS tomorrow/Thursday, supporting continued low-level moisture return and precipitation across the Plains as cooler air remains in place over the eastern CONUS and Intermountain West. When also considering the continued precipitation accumulations over California, significant wildfire-spread potential continues to appear negligible over most of the U.S. ...Please see www.spc.noaa.gov/fire for graphic product... Read more

SPC 1730Z Day 2 Outlook
Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1100 AM CST Wed Dec 20 2023 Valid 211200Z - 221200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Isolated thunderstorms should occur Thursday across parts of central/southern California and southern Arizona. Severe thunderstorms are not expected. ...Synopsis and Discussion... An upper low should be centered well off the coast of southern CA early Thursday morning. This low is expected to drift gradually southward through the day, before moving more eastward towards the coast overnight and into Friday morning. Large-scale ascent, ample mid-level moisture, and cold mid-level temperatures associated with this upper low should encourage isolated thunderstorms along and near the central/southern CA coast through the period. As the low moves gradually eastward, showers and occasional thunderstorms are forecast to expand eastward across southern Arizona through early Friday morning. Weak instability should preclude a meaningful threat for severe thunderstorms across these areas. ..Gleason.. 12/20/2023 Read more

SPC 1730Z Day 2 Outlook
Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1100 AM CST Wed Dec 20 2023 Valid 211200Z - 221200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Isolated thunderstorms should occur Thursday across parts of central/southern California and southern Arizona. Severe thunderstorms are not expected. ...Synopsis and Discussion... An upper low should be centered well off the coast of southern CA early Thursday morning. This low is expected to drift gradually southward through the day, before moving more eastward towards the coast overnight and into Friday morning. Large-scale ascent, ample mid-level moisture, and cold mid-level temperatures associated with this upper low should encourage isolated thunderstorms along and near the central/southern CA coast through the period. As the low moves gradually eastward, showers and occasional thunderstorms are forecast to expand eastward across southern Arizona through early Friday morning. Weak instability should preclude a meaningful threat for severe thunderstorms across these areas. ..Gleason.. 12/20/2023 Read more

SPC 1730Z Day 2 Outlook
Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1100 AM CST Wed Dec 20 2023 Valid 211200Z - 221200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Isolated thunderstorms should occur Thursday across parts of central/southern California and southern Arizona. Severe thunderstorms are not expected. ...Synopsis and Discussion... An upper low should be centered well off the coast of southern CA early Thursday morning. This low is expected to drift gradually southward through the day, before moving more eastward towards the coast overnight and into Friday morning. Large-scale ascent, ample mid-level moisture, and cold mid-level temperatures associated with this upper low should encourage isolated thunderstorms along and near the central/southern CA coast through the period. As the low moves gradually eastward, showers and occasional thunderstorms are forecast to expand eastward across southern Arizona through early Friday morning. Weak instability should preclude a meaningful threat for severe thunderstorms across these areas. ..Gleason.. 12/20/2023 Read more

SPC 1730Z Day 2 Outlook
Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1100 AM CST Wed Dec 20 2023 Valid 211200Z - 221200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Isolated thunderstorms should occur Thursday across parts of central/southern California and southern Arizona. Severe thunderstorms are not expected. ...Synopsis and Discussion... An upper low should be centered well off the coast of southern CA early Thursday morning. This low is expected to drift gradually southward through the day, before moving more eastward towards the coast overnight and into Friday morning. Large-scale ascent, ample mid-level moisture, and cold mid-level temperatures associated with this upper low should encourage isolated thunderstorms along and near the central/southern CA coast through the period. As the low moves gradually eastward, showers and occasional thunderstorms are forecast to expand eastward across southern Arizona through early Friday morning. Weak instability should preclude a meaningful threat for severe thunderstorms across these areas. ..Gleason.. 12/20/2023 Read more

SPC 1730Z Day 2 Outlook
Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1100 AM CST Wed Dec 20 2023 Valid 211200Z - 221200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Isolated thunderstorms should occur Thursday across parts of central/southern California and southern Arizona. Severe thunderstorms are not expected. ...Synopsis and Discussion... An upper low should be centered well off the coast of southern CA early Thursday morning. This low is expected to drift gradually southward through the day, before moving more eastward towards the coast overnight and into Friday morning. Large-scale ascent, ample mid-level moisture, and cold mid-level temperatures associated with this upper low should encourage isolated thunderstorms along and near the central/southern CA coast through the period. As the low moves gradually eastward, showers and occasional thunderstorms are forecast to expand eastward across southern Arizona through early Friday morning. Weak instability should preclude a meaningful threat for severe thunderstorms across these areas. ..Gleason.. 12/20/2023 Read more

SPC 1730Z Day 2 Outlook
Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1100 AM CST Wed Dec 20 2023 Valid 211200Z - 221200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Isolated thunderstorms should occur Thursday across parts of central/southern California and southern Arizona. Severe thunderstorms are not expected. ...Synopsis and Discussion... An upper low should be centered well off the coast of southern CA early Thursday morning. This low is expected to drift gradually southward through the day, before moving more eastward towards the coast overnight and into Friday morning. Large-scale ascent, ample mid-level moisture, and cold mid-level temperatures associated with this upper low should encourage isolated thunderstorms along and near the central/southern CA coast through the period. As the low moves gradually eastward, showers and occasional thunderstorms are forecast to expand eastward across southern Arizona through early Friday morning. Weak instability should preclude a meaningful threat for severe thunderstorms across these areas. ..Gleason.. 12/20/2023 Read more

SPC 1630Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1025 AM CST Wed Dec 20 2023 Valid 201630Z - 211200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Isolated thunderstorms will be possible across parts of southern/central California and over portions of the Southwest. Severe weather is not expected. ...Discussion... Low-amplitude ridging aloft will prevail across much of the country today, as eastern U.S. troughing continues to slowly depart the Northeast. The main feature of interest with respect to convective potential remains an upper low off the coast of California, which will continue moving slowly southward. Within the warm conveyor region of this system, and just ahead of a weak surface front moving onshore, a disorganized band of convection is indicated -- the strongest portion of which will gradually move onshore over San Luis Obispo and Santa Barbara Counties over the next few hours. Ahead of this band, onshore instability remains very weak and low-topped -- as evidenced by the overall lack of lightning. This, combined with weak low-level shear precludes any appreciable risk for severe weather, though gusty winds may accompany any stronger convective elements. Elsewhere, sporadic lightning will continue across portions of the Southwest, in conjunction with a weaker mid-level disturbance moving slowly eastward across the Four Corners states. Thunderstorms are not expected across the remainder of the U.S., where surface high pressure and accompanying cool/stable conditions prevail. ..Goss/Thornton.. 12/20/2023 Read more

SPC 1630Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1025 AM CST Wed Dec 20 2023 Valid 201630Z - 211200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Isolated thunderstorms will be possible across parts of southern/central California and over portions of the Southwest. Severe weather is not expected. ...Discussion... Low-amplitude ridging aloft will prevail across much of the country today, as eastern U.S. troughing continues to slowly depart the Northeast. The main feature of interest with respect to convective potential remains an upper low off the coast of California, which will continue moving slowly southward. Within the warm conveyor region of this system, and just ahead of a weak surface front moving onshore, a disorganized band of convection is indicated -- the strongest portion of which will gradually move onshore over San Luis Obispo and Santa Barbara Counties over the next few hours. Ahead of this band, onshore instability remains very weak and low-topped -- as evidenced by the overall lack of lightning. This, combined with weak low-level shear precludes any appreciable risk for severe weather, though gusty winds may accompany any stronger convective elements. Elsewhere, sporadic lightning will continue across portions of the Southwest, in conjunction with a weaker mid-level disturbance moving slowly eastward across the Four Corners states. Thunderstorms are not expected across the remainder of the U.S., where surface high pressure and accompanying cool/stable conditions prevail. ..Goss/Thornton.. 12/20/2023 Read more

SPC 1630Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1025 AM CST Wed Dec 20 2023 Valid 201630Z - 211200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Isolated thunderstorms will be possible across parts of southern/central California and over portions of the Southwest. Severe weather is not expected. ...Discussion... Low-amplitude ridging aloft will prevail across much of the country today, as eastern U.S. troughing continues to slowly depart the Northeast. The main feature of interest with respect to convective potential remains an upper low off the coast of California, which will continue moving slowly southward. Within the warm conveyor region of this system, and just ahead of a weak surface front moving onshore, a disorganized band of convection is indicated -- the strongest portion of which will gradually move onshore over San Luis Obispo and Santa Barbara Counties over the next few hours. Ahead of this band, onshore instability remains very weak and low-topped -- as evidenced by the overall lack of lightning. This, combined with weak low-level shear precludes any appreciable risk for severe weather, though gusty winds may accompany any stronger convective elements. Elsewhere, sporadic lightning will continue across portions of the Southwest, in conjunction with a weaker mid-level disturbance moving slowly eastward across the Four Corners states. Thunderstorms are not expected across the remainder of the U.S., where surface high pressure and accompanying cool/stable conditions prevail. ..Goss/Thornton.. 12/20/2023 Read more

SPC 1630Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1025 AM CST Wed Dec 20 2023 Valid 201630Z - 211200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Isolated thunderstorms will be possible across parts of southern/central California and over portions of the Southwest. Severe weather is not expected. ...Discussion... Low-amplitude ridging aloft will prevail across much of the country today, as eastern U.S. troughing continues to slowly depart the Northeast. The main feature of interest with respect to convective potential remains an upper low off the coast of California, which will continue moving slowly southward. Within the warm conveyor region of this system, and just ahead of a weak surface front moving onshore, a disorganized band of convection is indicated -- the strongest portion of which will gradually move onshore over San Luis Obispo and Santa Barbara Counties over the next few hours. Ahead of this band, onshore instability remains very weak and low-topped -- as evidenced by the overall lack of lightning. This, combined with weak low-level shear precludes any appreciable risk for severe weather, though gusty winds may accompany any stronger convective elements. Elsewhere, sporadic lightning will continue across portions of the Southwest, in conjunction with a weaker mid-level disturbance moving slowly eastward across the Four Corners states. Thunderstorms are not expected across the remainder of the U.S., where surface high pressure and accompanying cool/stable conditions prevail. ..Goss/Thornton.. 12/20/2023 Read more

SPC 1630Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1025 AM CST Wed Dec 20 2023 Valid 201630Z - 211200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Isolated thunderstorms will be possible across parts of southern/central California and over portions of the Southwest. Severe weather is not expected. ...Discussion... Low-amplitude ridging aloft will prevail across much of the country today, as eastern U.S. troughing continues to slowly depart the Northeast. The main feature of interest with respect to convective potential remains an upper low off the coast of California, which will continue moving slowly southward. Within the warm conveyor region of this system, and just ahead of a weak surface front moving onshore, a disorganized band of convection is indicated -- the strongest portion of which will gradually move onshore over San Luis Obispo and Santa Barbara Counties over the next few hours. Ahead of this band, onshore instability remains very weak and low-topped -- as evidenced by the overall lack of lightning. This, combined with weak low-level shear precludes any appreciable risk for severe weather, though gusty winds may accompany any stronger convective elements. Elsewhere, sporadic lightning will continue across portions of the Southwest, in conjunction with a weaker mid-level disturbance moving slowly eastward across the Four Corners states. Thunderstorms are not expected across the remainder of the U.S., where surface high pressure and accompanying cool/stable conditions prevail. ..Goss/Thornton.. 12/20/2023 Read more

SPC Day 1 Fire Weather Outlook
Day 1 Fire Weather Outlook NWS Storm Prediction Center Norman OK 1026 AM CST Wed Dec 20 2023 Valid 201700Z - 211200Z ...NO CRITICAL AREAS... No changes, the potential for critical fire-weather conditions is low. ..Lyons.. 12/20/2023 .PREV DISCUSSION... /ISSUED 1249 AM CST Wed Dec 20 2023/ ...Synopsis... Upper-ridging will overspread the central and eastern U.S. as a mid-level trough meanders along the California coast today. Surface high pressure will reinforce cooler temperatures from the Mississippi River to the Atlantic coastline, as well as over the Intermountain West. Meanwhile, surface lee troughing will encourage modest moisture return across the Plains states, with the West Coast mid-level trough supporting appreciable precipitation accumulations over much of California. The culmination of the aforementioned synoptic setup will be quiescent fire-weather conditions over the CONUS. ...Please see www.spc.noaa.gov/fire for graphic product... Read more

SPC Day 1 Fire Weather Outlook
Day 1 Fire Weather Outlook NWS Storm Prediction Center Norman OK 1026 AM CST Wed Dec 20 2023 Valid 201700Z - 211200Z ...NO CRITICAL AREAS... No changes, the potential for critical fire-weather conditions is low. ..Lyons.. 12/20/2023 .PREV DISCUSSION... /ISSUED 1249 AM CST Wed Dec 20 2023/ ...Synopsis... Upper-ridging will overspread the central and eastern U.S. as a mid-level trough meanders along the California coast today. Surface high pressure will reinforce cooler temperatures from the Mississippi River to the Atlantic coastline, as well as over the Intermountain West. Meanwhile, surface lee troughing will encourage modest moisture return across the Plains states, with the West Coast mid-level trough supporting appreciable precipitation accumulations over much of California. The culmination of the aforementioned synoptic setup will be quiescent fire-weather conditions over the CONUS. ...Please see www.spc.noaa.gov/fire for graphic product... Read more

SPC Day 1 Fire Weather Outlook
Day 1 Fire Weather Outlook NWS Storm Prediction Center Norman OK 1026 AM CST Wed Dec 20 2023 Valid 201700Z - 211200Z ...NO CRITICAL AREAS... No changes, the potential for critical fire-weather conditions is low. ..Lyons.. 12/20/2023 .PREV DISCUSSION... /ISSUED 1249 AM CST Wed Dec 20 2023/ ...Synopsis... Upper-ridging will overspread the central and eastern U.S. as a mid-level trough meanders along the California coast today. Surface high pressure will reinforce cooler temperatures from the Mississippi River to the Atlantic coastline, as well as over the Intermountain West. Meanwhile, surface lee troughing will encourage modest moisture return across the Plains states, with the West Coast mid-level trough supporting appreciable precipitation accumulations over much of California. The culmination of the aforementioned synoptic setup will be quiescent fire-weather conditions over the CONUS. ...Please see www.spc.noaa.gov/fire for graphic product... Read more

SPC Day 1 Fire Weather Outlook
Day 1 Fire Weather Outlook NWS Storm Prediction Center Norman OK 1026 AM CST Wed Dec 20 2023 Valid 201700Z - 211200Z ...NO CRITICAL AREAS... No changes, the potential for critical fire-weather conditions is low. ..Lyons.. 12/20/2023 .PREV DISCUSSION... /ISSUED 1249 AM CST Wed Dec 20 2023/ ...Synopsis... Upper-ridging will overspread the central and eastern U.S. as a mid-level trough meanders along the California coast today. Surface high pressure will reinforce cooler temperatures from the Mississippi River to the Atlantic coastline, as well as over the Intermountain West. Meanwhile, surface lee troughing will encourage modest moisture return across the Plains states, with the West Coast mid-level trough supporting appreciable precipitation accumulations over much of California. The culmination of the aforementioned synoptic setup will be quiescent fire-weather conditions over the CONUS. ...Please see www.spc.noaa.gov/fire for graphic product... Read more