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SPC 1200Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1139 PM CST Sat Nov 23 2024 Valid 241200Z - 251200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Isolated thunderstorms will be possible today across parts of the western U.S., but no severe threat is expected. ...DISCUSSION... At mid-levels, a low will move slowly southward across the eastern Pacific today, as southwesterly flow remains over much of the Pacific Northwest. Strong large-scale ascent and steep mid-level lapse rates will make thunderstorm development possible across parts of western Oregon and northwestern California. No severe threat is expected across the continental U.S. today or tonight. ..Broyles/Marsh.. 11/24/2024 Read more

SPC 1200Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1139 PM CST Sat Nov 23 2024 Valid 241200Z - 251200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Isolated thunderstorms will be possible today across parts of the western U.S., but no severe threat is expected. ...DISCUSSION... At mid-levels, a low will move slowly southward across the eastern Pacific today, as southwesterly flow remains over much of the Pacific Northwest. Strong large-scale ascent and steep mid-level lapse rates will make thunderstorm development possible across parts of western Oregon and northwestern California. No severe threat is expected across the continental U.S. today or tonight. ..Broyles/Marsh.. 11/24/2024 Read more

SPC 1200Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1139 PM CST Sat Nov 23 2024 Valid 241200Z - 251200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Isolated thunderstorms will be possible today across parts of the western U.S., but no severe threat is expected. ...DISCUSSION... At mid-levels, a low will move slowly southward across the eastern Pacific today, as southwesterly flow remains over much of the Pacific Northwest. Strong large-scale ascent and steep mid-level lapse rates will make thunderstorm development possible across parts of western Oregon and northwestern California. No severe threat is expected across the continental U.S. today or tonight. ..Broyles/Marsh.. 11/24/2024 Read more

SPC 1200Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1139 PM CST Sat Nov 23 2024 Valid 241200Z - 251200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Isolated thunderstorms will be possible today across parts of the western U.S., but no severe threat is expected. ...DISCUSSION... At mid-levels, a low will move slowly southward across the eastern Pacific today, as southwesterly flow remains over much of the Pacific Northwest. Strong large-scale ascent and steep mid-level lapse rates will make thunderstorm development possible across parts of western Oregon and northwestern California. No severe threat is expected across the continental U.S. today or tonight. ..Broyles/Marsh.. 11/24/2024 Read more

SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0636 PM CST Sat Nov 23 2024 Valid 240100Z - 241200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Isolated thunderstorms will be possible this evening into tonight from northern California into parts of the Pacific Northwest, but no severe threat is expected. ...DISCUSSION... A powerful mid-level low, offshore from the Pacific Northwest, will move slowly southward across the eastern Pacific. Southwesterly mid-level flow will be in place across much of the western U.S. Thunderstorm development will be possible this evening into tonight from northern California into parts of the Pacific northwest, in response to strong large-scale ascent and steep mid-level lapse rates. No severe threat is expected. ..Broyles.. 11/24/2024 Read more

SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0636 PM CST Sat Nov 23 2024 Valid 240100Z - 241200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Isolated thunderstorms will be possible this evening into tonight from northern California into parts of the Pacific Northwest, but no severe threat is expected. ...DISCUSSION... A powerful mid-level low, offshore from the Pacific Northwest, will move slowly southward across the eastern Pacific. Southwesterly mid-level flow will be in place across much of the western U.S. Thunderstorm development will be possible this evening into tonight from northern California into parts of the Pacific northwest, in response to strong large-scale ascent and steep mid-level lapse rates. No severe threat is expected. ..Broyles.. 11/24/2024 Read more

SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0636 PM CST Sat Nov 23 2024 Valid 240100Z - 241200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Isolated thunderstorms will be possible this evening into tonight from northern California into parts of the Pacific Northwest, but no severe threat is expected. ...DISCUSSION... A powerful mid-level low, offshore from the Pacific Northwest, will move slowly southward across the eastern Pacific. Southwesterly mid-level flow will be in place across much of the western U.S. Thunderstorm development will be possible this evening into tonight from northern California into parts of the Pacific northwest, in response to strong large-scale ascent and steep mid-level lapse rates. No severe threat is expected. ..Broyles.. 11/24/2024 Read more

No watches are valid as of Sat Nov 23 22:03:02 UTC 2024.

No Mesoscale Discussions are in effect as of Sat Nov 23 22:03:02 UTC 2024.

SPC Day 3-8 Fire Weather Outlook
Day 3-8 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0348 PM CST Sat Nov 23 2024 Valid 251200Z - 011200Z A zonal mid-level flow regime across the CONUS will gradually amplify through early next week as broad troughing develops over the eastern US. As the eastern trough deepens, strong northwesterly flow and weak ridging should build over the western and central US. A surface low and strong cold front will develop and move eastward mid to late week, supporting much colder and wetter conditions over the central and eastern CONUS. The arctic air mass and multiple rounds of precipitation should limit fuel availability and fire-weather concerns. To the west, high pressure will intensify through the remainder of the forecast period over the Rockies and Great Basin. Some offshore pressure gradients could support dry and breezy conditions into parts of CA into next weekend, but model variations and the potential for precipitation limit predictability of any fire-weather concerns. ..Lyons.. 11/23/2024 ...Please see www.spc.noaa.gov/fire for graphic product... Read more

SPC Day 3-8 Fire Weather Outlook
Day 3-8 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0348 PM CST Sat Nov 23 2024 Valid 251200Z - 011200Z A zonal mid-level flow regime across the CONUS will gradually amplify through early next week as broad troughing develops over the eastern US. As the eastern trough deepens, strong northwesterly flow and weak ridging should build over the western and central US. A surface low and strong cold front will develop and move eastward mid to late week, supporting much colder and wetter conditions over the central and eastern CONUS. The arctic air mass and multiple rounds of precipitation should limit fuel availability and fire-weather concerns. To the west, high pressure will intensify through the remainder of the forecast period over the Rockies and Great Basin. Some offshore pressure gradients could support dry and breezy conditions into parts of CA into next weekend, but model variations and the potential for precipitation limit predictability of any fire-weather concerns. ..Lyons.. 11/23/2024 ...Please see www.spc.noaa.gov/fire for graphic product... Read more

SPC Day 3-8 Fire Weather Outlook
Day 3-8 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0348 PM CST Sat Nov 23 2024 Valid 251200Z - 011200Z A zonal mid-level flow regime across the CONUS will gradually amplify through early next week as broad troughing develops over the eastern US. As the eastern trough deepens, strong northwesterly flow and weak ridging should build over the western and central US. A surface low and strong cold front will develop and move eastward mid to late week, supporting much colder and wetter conditions over the central and eastern CONUS. The arctic air mass and multiple rounds of precipitation should limit fuel availability and fire-weather concerns. To the west, high pressure will intensify through the remainder of the forecast period over the Rockies and Great Basin. Some offshore pressure gradients could support dry and breezy conditions into parts of CA into next weekend, but model variations and the potential for precipitation limit predictability of any fire-weather concerns. ..Lyons.. 11/23/2024 ...Please see www.spc.noaa.gov/fire for graphic product... Read more

SPC Day 3-8 Fire Weather Outlook
Day 3-8 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0348 PM CST Sat Nov 23 2024 Valid 251200Z - 011200Z A zonal mid-level flow regime across the CONUS will gradually amplify through early next week as broad troughing develops over the eastern US. As the eastern trough deepens, strong northwesterly flow and weak ridging should build over the western and central US. A surface low and strong cold front will develop and move eastward mid to late week, supporting much colder and wetter conditions over the central and eastern CONUS. The arctic air mass and multiple rounds of precipitation should limit fuel availability and fire-weather concerns. To the west, high pressure will intensify through the remainder of the forecast period over the Rockies and Great Basin. Some offshore pressure gradients could support dry and breezy conditions into parts of CA into next weekend, but model variations and the potential for precipitation limit predictability of any fire-weather concerns. ..Lyons.. 11/23/2024 ...Please see www.spc.noaa.gov/fire for graphic product... Read more

SPC Day 3-8 Fire Weather Outlook
Day 3-8 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0348 PM CST Sat Nov 23 2024 Valid 251200Z - 011200Z A zonal mid-level flow regime across the CONUS will gradually amplify through early next week as broad troughing develops over the eastern US. As the eastern trough deepens, strong northwesterly flow and weak ridging should build over the western and central US. A surface low and strong cold front will develop and move eastward mid to late week, supporting much colder and wetter conditions over the central and eastern CONUS. The arctic air mass and multiple rounds of precipitation should limit fuel availability and fire-weather concerns. To the west, high pressure will intensify through the remainder of the forecast period over the Rockies and Great Basin. Some offshore pressure gradients could support dry and breezy conditions into parts of CA into next weekend, but model variations and the potential for precipitation limit predictability of any fire-weather concerns. ..Lyons.. 11/23/2024 ...Please see www.spc.noaa.gov/fire for graphic product... Read more

SPC 2000Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0151 PM CST Sat Nov 23 2024 Valid 232000Z - 241200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Severe thunderstorms are unlikely through tonight. ...20z Update... No changes are needed to the current D1 Convective Outlook. See previous discussion below for more information. ..Thornton/Hart.. 11/23/2024 .PREV DISCUSSION... /ISSUED 1024 AM CST Sat Nov 23 2024/ ...Synopsis... Persistent onshore flow and cold temperatures aloft will once again pose a risk of thunderstorms over coastal WA/OR and northern CA through tonight. Thunderstorms are also possible this afternoon and evening farther inland into parts of eastern OR and ID as a strong upper trough and associated mid level jet track into the region. Weak instability is expected to preclude organized severe storms. Read more

SPC 2000Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0151 PM CST Sat Nov 23 2024 Valid 232000Z - 241200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Severe thunderstorms are unlikely through tonight. ...20z Update... No changes are needed to the current D1 Convective Outlook. See previous discussion below for more information. ..Thornton/Hart.. 11/23/2024 .PREV DISCUSSION... /ISSUED 1024 AM CST Sat Nov 23 2024/ ...Synopsis... Persistent onshore flow and cold temperatures aloft will once again pose a risk of thunderstorms over coastal WA/OR and northern CA through tonight. Thunderstorms are also possible this afternoon and evening farther inland into parts of eastern OR and ID as a strong upper trough and associated mid level jet track into the region. Weak instability is expected to preclude organized severe storms. Read more

SPC 2000Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0151 PM CST Sat Nov 23 2024 Valid 232000Z - 241200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Severe thunderstorms are unlikely through tonight. ...20z Update... No changes are needed to the current D1 Convective Outlook. See previous discussion below for more information. ..Thornton/Hart.. 11/23/2024 .PREV DISCUSSION... /ISSUED 1024 AM CST Sat Nov 23 2024/ ...Synopsis... Persistent onshore flow and cold temperatures aloft will once again pose a risk of thunderstorms over coastal WA/OR and northern CA through tonight. Thunderstorms are also possible this afternoon and evening farther inland into parts of eastern OR and ID as a strong upper trough and associated mid level jet track into the region. Weak instability is expected to preclude organized severe storms. Read more

SPC 2000Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0151 PM CST Sat Nov 23 2024 Valid 232000Z - 241200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Severe thunderstorms are unlikely through tonight. ...20z Update... No changes are needed to the current D1 Convective Outlook. See previous discussion below for more information. ..Thornton/Hart.. 11/23/2024 .PREV DISCUSSION... /ISSUED 1024 AM CST Sat Nov 23 2024/ ...Synopsis... Persistent onshore flow and cold temperatures aloft will once again pose a risk of thunderstorms over coastal WA/OR and northern CA through tonight. Thunderstorms are also possible this afternoon and evening farther inland into parts of eastern OR and ID as a strong upper trough and associated mid level jet track into the region. Weak instability is expected to preclude organized severe storms. Read more

SPC 2000Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0151 PM CST Sat Nov 23 2024 Valid 232000Z - 241200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Severe thunderstorms are unlikely through tonight. ...20z Update... No changes are needed to the current D1 Convective Outlook. See previous discussion below for more information. ..Thornton/Hart.. 11/23/2024 .PREV DISCUSSION... /ISSUED 1024 AM CST Sat Nov 23 2024/ ...Synopsis... Persistent onshore flow and cold temperatures aloft will once again pose a risk of thunderstorms over coastal WA/OR and northern CA through tonight. Thunderstorms are also possible this afternoon and evening farther inland into parts of eastern OR and ID as a strong upper trough and associated mid level jet track into the region. Weak instability is expected to preclude organized severe storms. Read more

SPC 2000Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0151 PM CST Sat Nov 23 2024 Valid 232000Z - 241200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Severe thunderstorms are unlikely through tonight. ...20z Update... No changes are needed to the current D1 Convective Outlook. See previous discussion below for more information. ..Thornton/Hart.. 11/23/2024 .PREV DISCUSSION... /ISSUED 1024 AM CST Sat Nov 23 2024/ ...Synopsis... Persistent onshore flow and cold temperatures aloft will once again pose a risk of thunderstorms over coastal WA/OR and northern CA through tonight. Thunderstorms are also possible this afternoon and evening farther inland into parts of eastern OR and ID as a strong upper trough and associated mid level jet track into the region. Weak instability is expected to preclude organized severe storms. Read more