Severe Storms

SPC Day 3-8 Fire Weather Outlook
Day 3-8 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0443 PM CDT Tue Sep 09 2025 Valid 111200Z - 171200Z A broad upper-level low over the western U.S. on Day 3/Thursday will slowly pivot into the Central/Northern Plains by Day 6/Sunday. This will gradually push showers and thunderstorm development east of the Continental Divide early next week but not after leaving a trail of wetting rains across the Northwest, Northern Rockies and northern Great Basin, further mitigating fire weather concerns. Elevated mid-level flow on the southeastern periphery of the low will promote dry and breezy conditions across northern AZ and southern UT on Day 3/Thursday, but marginal fuel dryness precludes introducing 40% critical probabilities at this time. Lighter low-level winds in the wake of the upper-low's exit into the Plains will subdue fire weather concerns across the Southwest from Day 4/Friday into the weekend. Increasing ensemble member spread introduces considerable uncertainty into the timing and position of the next Pacific trough into the Northwest. However, with expected preceding precipitation and its effect on fuels as well as the potential for additional rainfall and cooler temperatures accompanying the next trough, fire weather threat should remain muted in the Day 6-8/Sunday-Monday period across the Northwest. ..Williams.. 09/09/2025 ...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 0443 PM CDT Tue Sep 09 2025 Valid 111200Z - 171200Z A broad upper-level low over the western U.S. on Day 3/Thursday will slowly pivot into the Central/Northern Plains by Day 6/Sunday. This will gradually push showers and thunderstorm development east of the Continental Divide early next week but not after leaving a trail of wetting rains across the Northwest, Northern Rockies and northern Great Basin, further mitigating fire weather concerns. Elevated mid-level flow on the southeastern periphery of the low will promote dry and breezy conditions across northern AZ and southern UT on Day 3/Thursday, but marginal fuel dryness precludes introducing 40% critical probabilities at this time. Lighter low-level winds in the wake of the upper-low's exit into the Plains will subdue fire weather concerns across the Southwest from Day 4/Friday into the weekend. Increasing ensemble member spread introduces considerable uncertainty into the timing and position of the next Pacific trough into the Northwest. However, with expected preceding precipitation and its effect on fuels as well as the potential for additional rainfall and cooler temperatures accompanying the next trough, fire weather threat should remain muted in the Day 6-8/Sunday-Monday period across the Northwest. ..Williams.. 09/09/2025 ...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 0443 PM CDT Tue Sep 09 2025 Valid 111200Z - 171200Z A broad upper-level low over the western U.S. on Day 3/Thursday will slowly pivot into the Central/Northern Plains by Day 6/Sunday. This will gradually push showers and thunderstorm development east of the Continental Divide early next week but not after leaving a trail of wetting rains across the Northwest, Northern Rockies and northern Great Basin, further mitigating fire weather concerns. Elevated mid-level flow on the southeastern periphery of the low will promote dry and breezy conditions across northern AZ and southern UT on Day 3/Thursday, but marginal fuel dryness precludes introducing 40% critical probabilities at this time. Lighter low-level winds in the wake of the upper-low's exit into the Plains will subdue fire weather concerns across the Southwest from Day 4/Friday into the weekend. Increasing ensemble member spread introduces considerable uncertainty into the timing and position of the next Pacific trough into the Northwest. However, with expected preceding precipitation and its effect on fuels as well as the potential for additional rainfall and cooler temperatures accompanying the next trough, fire weather threat should remain muted in the Day 6-8/Sunday-Monday period across the Northwest. ..Williams.. 09/09/2025 ...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 0443 PM CDT Tue Sep 09 2025 Valid 111200Z - 171200Z A broad upper-level low over the western U.S. on Day 3/Thursday will slowly pivot into the Central/Northern Plains by Day 6/Sunday. This will gradually push showers and thunderstorm development east of the Continental Divide early next week but not after leaving a trail of wetting rains across the Northwest, Northern Rockies and northern Great Basin, further mitigating fire weather concerns. Elevated mid-level flow on the southeastern periphery of the low will promote dry and breezy conditions across northern AZ and southern UT on Day 3/Thursday, but marginal fuel dryness precludes introducing 40% critical probabilities at this time. Lighter low-level winds in the wake of the upper-low's exit into the Plains will subdue fire weather concerns across the Southwest from Day 4/Friday into the weekend. Increasing ensemble member spread introduces considerable uncertainty into the timing and position of the next Pacific trough into the Northwest. However, with expected preceding precipitation and its effect on fuels as well as the potential for additional rainfall and cooler temperatures accompanying the next trough, fire weather threat should remain muted in the Day 6-8/Sunday-Monday period across the Northwest. ..Williams.. 09/09/2025 ...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 0443 PM CDT Tue Sep 09 2025 Valid 111200Z - 171200Z A broad upper-level low over the western U.S. on Day 3/Thursday will slowly pivot into the Central/Northern Plains by Day 6/Sunday. This will gradually push showers and thunderstorm development east of the Continental Divide early next week but not after leaving a trail of wetting rains across the Northwest, Northern Rockies and northern Great Basin, further mitigating fire weather concerns. Elevated mid-level flow on the southeastern periphery of the low will promote dry and breezy conditions across northern AZ and southern UT on Day 3/Thursday, but marginal fuel dryness precludes introducing 40% critical probabilities at this time. Lighter low-level winds in the wake of the upper-low's exit into the Plains will subdue fire weather concerns across the Southwest from Day 4/Friday into the weekend. Increasing ensemble member spread introduces considerable uncertainty into the timing and position of the next Pacific trough into the Northwest. However, with expected preceding precipitation and its effect on fuels as well as the potential for additional rainfall and cooler temperatures accompanying the next trough, fire weather threat should remain muted in the Day 6-8/Sunday-Monday period across the Northwest. ..Williams.. 09/09/2025 ...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 0443 PM CDT Tue Sep 09 2025 Valid 111200Z - 171200Z A broad upper-level low over the western U.S. on Day 3/Thursday will slowly pivot into the Central/Northern Plains by Day 6/Sunday. This will gradually push showers and thunderstorm development east of the Continental Divide early next week but not after leaving a trail of wetting rains across the Northwest, Northern Rockies and northern Great Basin, further mitigating fire weather concerns. Elevated mid-level flow on the southeastern periphery of the low will promote dry and breezy conditions across northern AZ and southern UT on Day 3/Thursday, but marginal fuel dryness precludes introducing 40% critical probabilities at this time. Lighter low-level winds in the wake of the upper-low's exit into the Plains will subdue fire weather concerns across the Southwest from Day 4/Friday into the weekend. Increasing ensemble member spread introduces considerable uncertainty into the timing and position of the next Pacific trough into the Northwest. However, with expected preceding precipitation and its effect on fuels as well as the potential for additional rainfall and cooler temperatures accompanying the next trough, fire weather threat should remain muted in the Day 6-8/Sunday-Monday period across the Northwest. ..Williams.. 09/09/2025 ...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 0443 PM CDT Tue Sep 09 2025 Valid 111200Z - 171200Z A broad upper-level low over the western U.S. on Day 3/Thursday will slowly pivot into the Central/Northern Plains by Day 6/Sunday. This will gradually push showers and thunderstorm development east of the Continental Divide early next week but not after leaving a trail of wetting rains across the Northwest, Northern Rockies and northern Great Basin, further mitigating fire weather concerns. Elevated mid-level flow on the southeastern periphery of the low will promote dry and breezy conditions across northern AZ and southern UT on Day 3/Thursday, but marginal fuel dryness precludes introducing 40% critical probabilities at this time. Lighter low-level winds in the wake of the upper-low's exit into the Plains will subdue fire weather concerns across the Southwest from Day 4/Friday into the weekend. Increasing ensemble member spread introduces considerable uncertainty into the timing and position of the next Pacific trough into the Northwest. However, with expected preceding precipitation and its effect on fuels as well as the potential for additional rainfall and cooler temperatures accompanying the next trough, fire weather threat should remain muted in the Day 6-8/Sunday-Monday period across the Northwest. ..Williams.. 09/09/2025 ...Please see www.spc.noaa.gov/fire for graphic product... Read more

MD 2053 CONCERNING SEVERE POTENTIAL...WATCH POSSIBLE FOR PARTS OF EASTERN CO...WESTERN KS...THE OK PANHANDLE...AND FAR NORTHERN TX PANHANDLE
Mesoscale Discussion 2053 NWS Storm Prediction Center Norman OK 0306 PM CDT Tue Sep 09 2025 Areas affected...Parts of eastern CO...western KS...the OK Panhandle...and far northern TX Panhandle Concerning...Severe potential...Watch possible Valid 092006Z - 092200Z Probability of Watch Issuance...60 percent SUMMARY...Severe storms will be capable of producing large hail and severe wind gusts this afternoon into tonight. Current thinking is that a watch may eventually be needed for parts of the area, though timing is uncertain. DISCUSSION...The latest visible satellite imagery shows two areas of gradually deepening/expanding boundary-layer cumulus in eastern CO -- both focused along weak surface boundaries/wind shifts. Shallow boundary-layer cumulus is also becoming evident over the central OK Panhandle into the north-central TX Panhandle, where another subtle surface boundary is evident. Continued mesoscale ascent and diurnal heating along these boundaries should reduce any remaining inhibition and support storm initiation between 20-23Z. High-based/semi-discrete storms should track/develop east-southeastward into an increasingly moist/unstable air mass (1500-2000 J/kg MLCAPE). Around 30-40 kt of effective shear (characterized by a long/mostly straight hodograph) should favor splitting cells with a risk of large hail and locally severe gusts. With time, storms may congeal into clusters as they move southward and intercept a gradually strengthening low-level jet this evening. Current thinking is that a watch may eventually be needed for parts of the area, though timing is uncertain. ..Weinman/Hart.. 09/09/2025 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...DDC...GLD...AMA...PUB...BOU... LAT...LON 38070258 38600275 39010306 39240341 39780347 40040315 39980234 39680162 38870089 36720051 36240087 36200136 37030200 37620237 38070258 MOST PROBABLE PEAK WIND GUST...65-80 MPH MOST PROBABLE PEAK HAIL SIZE...1.50-2.50 IN Read more

WW 0609 Status Updates
STATUS FOR WATCH 0609 HAS NOT BEEN ISSUED YET Read more

WW 0609 Status Updates
STATUS FOR WATCH 0609 HAS NOT BEEN ISSUED YET Read more

No watches are valid as of Tue Sep 9 20:40:02 UTC 2025.

SPC Day 2 Fire Weather Outlook
Day 2 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0259 PM CDT Tue Sep 09 2025 Valid 101200Z - 111200Z ...Washington State... An upper-level trough moving into the western U.S. will support another round of dry thunderstorms through tonight into the early Day 2 period. Numerous new fire ignitions from overnight thunderstorms occurred this morning across central WA. Cloud to ground lightning and minimal rainfall outside thunderstorm rain cores will continue to present an ignition threat in heavier, drought stressed fuels across the WA Cascades, and north central WA, particularly in the morning hours. Thunderstorm development will shift primarily to higher terrain by Wednesday afternoon across central WA. ...Eastern Great Basin and Western Utah... A robust mid-level jet (50-60 knots) rounding the base of the upper-level low over northern California combined with deep, well-mixed boundary layer will support breezy south-southwest surface winds of 15-25 mph Wednesday afternoon. The gusty winds along with relative humidity in the 15-20% range will result in elevated to locally critical fire weather conditions across east-central NV into western UT. Although fuels are only marginally dry, the stronger winds and low RH could contribute to wildfire spread. ..Williams.. 09/09/2025 .PREV DISCUSSION... /ISSUED 1255 AM CDT Tue Sep 09 2025/ ...Synopsis... For Wednesday, not much change in the upper-level pattern is expected from Tuesday. The upper-level trough in the West will shift into more of the Great Basin and the mid-level jet will extend farther northward. Showers and thunderstorms remain possible in the Northwest and northern Rockies. ...Eastern Great Basin into Idaho/Wyoming... Dry and breezy conditions appear likely during the afternoon. Winds of 15-25 mph will be possible along with RH of 15-20%. Even with these elevated to locally critical meteorological conditions, fuels are not likely to become receptive enough to support more than a locally elevated risk. ...Northwest/northern Rockies... While thunderstorms will be possible in association with the upper low, recent precipitation and substantial cloud cover should generally limit the overall risk for lightning ignitions. A continued downward trend in fuel receptiveness is expected Wednesday. Highlights do not appear warranted at this time. ...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 0259 PM CDT Tue Sep 09 2025 Valid 101200Z - 111200Z ...Washington State... An upper-level trough moving into the western U.S. will support another round of dry thunderstorms through tonight into the early Day 2 period. Numerous new fire ignitions from overnight thunderstorms occurred this morning across central WA. Cloud to ground lightning and minimal rainfall outside thunderstorm rain cores will continue to present an ignition threat in heavier, drought stressed fuels across the WA Cascades, and north central WA, particularly in the morning hours. Thunderstorm development will shift primarily to higher terrain by Wednesday afternoon across central WA. ...Eastern Great Basin and Western Utah... A robust mid-level jet (50-60 knots) rounding the base of the upper-level low over northern California combined with deep, well-mixed boundary layer will support breezy south-southwest surface winds of 15-25 mph Wednesday afternoon. The gusty winds along with relative humidity in the 15-20% range will result in elevated to locally critical fire weather conditions across east-central NV into western UT. Although fuels are only marginally dry, the stronger winds and low RH could contribute to wildfire spread. ..Williams.. 09/09/2025 .PREV DISCUSSION... /ISSUED 1255 AM CDT Tue Sep 09 2025/ ...Synopsis... For Wednesday, not much change in the upper-level pattern is expected from Tuesday. The upper-level trough in the West will shift into more of the Great Basin and the mid-level jet will extend farther northward. Showers and thunderstorms remain possible in the Northwest and northern Rockies. ...Eastern Great Basin into Idaho/Wyoming... Dry and breezy conditions appear likely during the afternoon. Winds of 15-25 mph will be possible along with RH of 15-20%. Even with these elevated to locally critical meteorological conditions, fuels are not likely to become receptive enough to support more than a locally elevated risk. ...Northwest/northern Rockies... While thunderstorms will be possible in association with the upper low, recent precipitation and substantial cloud cover should generally limit the overall risk for lightning ignitions. A continued downward trend in fuel receptiveness is expected Wednesday. Highlights do not appear warranted at this time. ...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 0259 PM CDT Tue Sep 09 2025 Valid 101200Z - 111200Z ...Washington State... An upper-level trough moving into the western U.S. will support another round of dry thunderstorms through tonight into the early Day 2 period. Numerous new fire ignitions from overnight thunderstorms occurred this morning across central WA. Cloud to ground lightning and minimal rainfall outside thunderstorm rain cores will continue to present an ignition threat in heavier, drought stressed fuels across the WA Cascades, and north central WA, particularly in the morning hours. Thunderstorm development will shift primarily to higher terrain by Wednesday afternoon across central WA. ...Eastern Great Basin and Western Utah... A robust mid-level jet (50-60 knots) rounding the base of the upper-level low over northern California combined with deep, well-mixed boundary layer will support breezy south-southwest surface winds of 15-25 mph Wednesday afternoon. The gusty winds along with relative humidity in the 15-20% range will result in elevated to locally critical fire weather conditions across east-central NV into western UT. Although fuels are only marginally dry, the stronger winds and low RH could contribute to wildfire spread. ..Williams.. 09/09/2025 .PREV DISCUSSION... /ISSUED 1255 AM CDT Tue Sep 09 2025/ ...Synopsis... For Wednesday, not much change in the upper-level pattern is expected from Tuesday. The upper-level trough in the West will shift into more of the Great Basin and the mid-level jet will extend farther northward. Showers and thunderstorms remain possible in the Northwest and northern Rockies. ...Eastern Great Basin into Idaho/Wyoming... Dry and breezy conditions appear likely during the afternoon. Winds of 15-25 mph will be possible along with RH of 15-20%. Even with these elevated to locally critical meteorological conditions, fuels are not likely to become receptive enough to support more than a locally elevated risk. ...Northwest/northern Rockies... While thunderstorms will be possible in association with the upper low, recent precipitation and substantial cloud cover should generally limit the overall risk for lightning ignitions. A continued downward trend in fuel receptiveness is expected Wednesday. Highlights do not appear warranted at this time. ...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 0259 PM CDT Tue Sep 09 2025 Valid 101200Z - 111200Z ...Washington State... An upper-level trough moving into the western U.S. will support another round of dry thunderstorms through tonight into the early Day 2 period. Numerous new fire ignitions from overnight thunderstorms occurred this morning across central WA. Cloud to ground lightning and minimal rainfall outside thunderstorm rain cores will continue to present an ignition threat in heavier, drought stressed fuels across the WA Cascades, and north central WA, particularly in the morning hours. Thunderstorm development will shift primarily to higher terrain by Wednesday afternoon across central WA. ...Eastern Great Basin and Western Utah... A robust mid-level jet (50-60 knots) rounding the base of the upper-level low over northern California combined with deep, well-mixed boundary layer will support breezy south-southwest surface winds of 15-25 mph Wednesday afternoon. The gusty winds along with relative humidity in the 15-20% range will result in elevated to locally critical fire weather conditions across east-central NV into western UT. Although fuels are only marginally dry, the stronger winds and low RH could contribute to wildfire spread. ..Williams.. 09/09/2025 .PREV DISCUSSION... /ISSUED 1255 AM CDT Tue Sep 09 2025/ ...Synopsis... For Wednesday, not much change in the upper-level pattern is expected from Tuesday. The upper-level trough in the West will shift into more of the Great Basin and the mid-level jet will extend farther northward. Showers and thunderstorms remain possible in the Northwest and northern Rockies. ...Eastern Great Basin into Idaho/Wyoming... Dry and breezy conditions appear likely during the afternoon. Winds of 15-25 mph will be possible along with RH of 15-20%. Even with these elevated to locally critical meteorological conditions, fuels are not likely to become receptive enough to support more than a locally elevated risk. ...Northwest/northern Rockies... While thunderstorms will be possible in association with the upper low, recent precipitation and substantial cloud cover should generally limit the overall risk for lightning ignitions. A continued downward trend in fuel receptiveness is expected Wednesday. Highlights do not appear warranted at this time. ...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 0259 PM CDT Tue Sep 09 2025 Valid 101200Z - 111200Z ...Washington State... An upper-level trough moving into the western U.S. will support another round of dry thunderstorms through tonight into the early Day 2 period. Numerous new fire ignitions from overnight thunderstorms occurred this morning across central WA. Cloud to ground lightning and minimal rainfall outside thunderstorm rain cores will continue to present an ignition threat in heavier, drought stressed fuels across the WA Cascades, and north central WA, particularly in the morning hours. Thunderstorm development will shift primarily to higher terrain by Wednesday afternoon across central WA. ...Eastern Great Basin and Western Utah... A robust mid-level jet (50-60 knots) rounding the base of the upper-level low over northern California combined with deep, well-mixed boundary layer will support breezy south-southwest surface winds of 15-25 mph Wednesday afternoon. The gusty winds along with relative humidity in the 15-20% range will result in elevated to locally critical fire weather conditions across east-central NV into western UT. Although fuels are only marginally dry, the stronger winds and low RH could contribute to wildfire spread. ..Williams.. 09/09/2025 .PREV DISCUSSION... /ISSUED 1255 AM CDT Tue Sep 09 2025/ ...Synopsis... For Wednesday, not much change in the upper-level pattern is expected from Tuesday. The upper-level trough in the West will shift into more of the Great Basin and the mid-level jet will extend farther northward. Showers and thunderstorms remain possible in the Northwest and northern Rockies. ...Eastern Great Basin into Idaho/Wyoming... Dry and breezy conditions appear likely during the afternoon. Winds of 15-25 mph will be possible along with RH of 15-20%. Even with these elevated to locally critical meteorological conditions, fuels are not likely to become receptive enough to support more than a locally elevated risk. ...Northwest/northern Rockies... While thunderstorms will be possible in association with the upper low, recent precipitation and substantial cloud cover should generally limit the overall risk for lightning ignitions. A continued downward trend in fuel receptiveness is expected Wednesday. Highlights do not appear warranted at this time. ...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 0259 PM CDT Tue Sep 09 2025 Valid 101200Z - 111200Z ...Washington State... An upper-level trough moving into the western U.S. will support another round of dry thunderstorms through tonight into the early Day 2 period. Numerous new fire ignitions from overnight thunderstorms occurred this morning across central WA. Cloud to ground lightning and minimal rainfall outside thunderstorm rain cores will continue to present an ignition threat in heavier, drought stressed fuels across the WA Cascades, and north central WA, particularly in the morning hours. Thunderstorm development will shift primarily to higher terrain by Wednesday afternoon across central WA. ...Eastern Great Basin and Western Utah... A robust mid-level jet (50-60 knots) rounding the base of the upper-level low over northern California combined with deep, well-mixed boundary layer will support breezy south-southwest surface winds of 15-25 mph Wednesday afternoon. The gusty winds along with relative humidity in the 15-20% range will result in elevated to locally critical fire weather conditions across east-central NV into western UT. Although fuels are only marginally dry, the stronger winds and low RH could contribute to wildfire spread. ..Williams.. 09/09/2025 .PREV DISCUSSION... /ISSUED 1255 AM CDT Tue Sep 09 2025/ ...Synopsis... For Wednesday, not much change in the upper-level pattern is expected from Tuesday. The upper-level trough in the West will shift into more of the Great Basin and the mid-level jet will extend farther northward. Showers and thunderstorms remain possible in the Northwest and northern Rockies. ...Eastern Great Basin into Idaho/Wyoming... Dry and breezy conditions appear likely during the afternoon. Winds of 15-25 mph will be possible along with RH of 15-20%. Even with these elevated to locally critical meteorological conditions, fuels are not likely to become receptive enough to support more than a locally elevated risk. ...Northwest/northern Rockies... While thunderstorms will be possible in association with the upper low, recent precipitation and substantial cloud cover should generally limit the overall risk for lightning ignitions. A continued downward trend in fuel receptiveness is expected Wednesday. Highlights do not appear warranted at this time. ...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 0259 PM CDT Tue Sep 09 2025 Valid 101200Z - 111200Z ...Washington State... An upper-level trough moving into the western U.S. will support another round of dry thunderstorms through tonight into the early Day 2 period. Numerous new fire ignitions from overnight thunderstorms occurred this morning across central WA. Cloud to ground lightning and minimal rainfall outside thunderstorm rain cores will continue to present an ignition threat in heavier, drought stressed fuels across the WA Cascades, and north central WA, particularly in the morning hours. Thunderstorm development will shift primarily to higher terrain by Wednesday afternoon across central WA. ...Eastern Great Basin and Western Utah... A robust mid-level jet (50-60 knots) rounding the base of the upper-level low over northern California combined with deep, well-mixed boundary layer will support breezy south-southwest surface winds of 15-25 mph Wednesday afternoon. The gusty winds along with relative humidity in the 15-20% range will result in elevated to locally critical fire weather conditions across east-central NV into western UT. Although fuels are only marginally dry, the stronger winds and low RH could contribute to wildfire spread. ..Williams.. 09/09/2025 .PREV DISCUSSION... /ISSUED 1255 AM CDT Tue Sep 09 2025/ ...Synopsis... For Wednesday, not much change in the upper-level pattern is expected from Tuesday. The upper-level trough in the West will shift into more of the Great Basin and the mid-level jet will extend farther northward. Showers and thunderstorms remain possible in the Northwest and northern Rockies. ...Eastern Great Basin into Idaho/Wyoming... Dry and breezy conditions appear likely during the afternoon. Winds of 15-25 mph will be possible along with RH of 15-20%. Even with these elevated to locally critical meteorological conditions, fuels are not likely to become receptive enough to support more than a locally elevated risk. ...Northwest/northern Rockies... While thunderstorms will be possible in association with the upper low, recent precipitation and substantial cloud cover should generally limit the overall risk for lightning ignitions. A continued downward trend in fuel receptiveness is expected Wednesday. Highlights do not appear warranted at this time. ...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 0259 PM CDT Tue Sep 09 2025 Valid 101200Z - 111200Z ...Washington State... An upper-level trough moving into the western U.S. will support another round of dry thunderstorms through tonight into the early Day 2 period. Numerous new fire ignitions from overnight thunderstorms occurred this morning across central WA. Cloud to ground lightning and minimal rainfall outside thunderstorm rain cores will continue to present an ignition threat in heavier, drought stressed fuels across the WA Cascades, and north central WA, particularly in the morning hours. Thunderstorm development will shift primarily to higher terrain by Wednesday afternoon across central WA. ...Eastern Great Basin and Western Utah... A robust mid-level jet (50-60 knots) rounding the base of the upper-level low over northern California combined with deep, well-mixed boundary layer will support breezy south-southwest surface winds of 15-25 mph Wednesday afternoon. The gusty winds along with relative humidity in the 15-20% range will result in elevated to locally critical fire weather conditions across east-central NV into western UT. Although fuels are only marginally dry, the stronger winds and low RH could contribute to wildfire spread. ..Williams.. 09/09/2025 .PREV DISCUSSION... /ISSUED 1255 AM CDT Tue Sep 09 2025/ ...Synopsis... For Wednesday, not much change in the upper-level pattern is expected from Tuesday. The upper-level trough in the West will shift into more of the Great Basin and the mid-level jet will extend farther northward. Showers and thunderstorms remain possible in the Northwest and northern Rockies. ...Eastern Great Basin into Idaho/Wyoming... Dry and breezy conditions appear likely during the afternoon. Winds of 15-25 mph will be possible along with RH of 15-20%. Even with these elevated to locally critical meteorological conditions, fuels are not likely to become receptive enough to support more than a locally elevated risk. ...Northwest/northern Rockies... While thunderstorms will be possible in association with the upper low, recent precipitation and substantial cloud cover should generally limit the overall risk for lightning ignitions. A continued downward trend in fuel receptiveness is expected Wednesday. Highlights do not appear warranted at this time. ...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 0259 PM CDT Tue Sep 09 2025 Valid 101200Z - 111200Z ...Washington State... An upper-level trough moving into the western U.S. will support another round of dry thunderstorms through tonight into the early Day 2 period. Numerous new fire ignitions from overnight thunderstorms occurred this morning across central WA. Cloud to ground lightning and minimal rainfall outside thunderstorm rain cores will continue to present an ignition threat in heavier, drought stressed fuels across the WA Cascades, and north central WA, particularly in the morning hours. Thunderstorm development will shift primarily to higher terrain by Wednesday afternoon across central WA. ...Eastern Great Basin and Western Utah... A robust mid-level jet (50-60 knots) rounding the base of the upper-level low over northern California combined with deep, well-mixed boundary layer will support breezy south-southwest surface winds of 15-25 mph Wednesday afternoon. The gusty winds along with relative humidity in the 15-20% range will result in elevated to locally critical fire weather conditions across east-central NV into western UT. Although fuels are only marginally dry, the stronger winds and low RH could contribute to wildfire spread. ..Williams.. 09/09/2025 .PREV DISCUSSION... /ISSUED 1255 AM CDT Tue Sep 09 2025/ ...Synopsis... For Wednesday, not much change in the upper-level pattern is expected from Tuesday. The upper-level trough in the West will shift into more of the Great Basin and the mid-level jet will extend farther northward. Showers and thunderstorms remain possible in the Northwest and northern Rockies. ...Eastern Great Basin into Idaho/Wyoming... Dry and breezy conditions appear likely during the afternoon. Winds of 15-25 mph will be possible along with RH of 15-20%. Even with these elevated to locally critical meteorological conditions, fuels are not likely to become receptive enough to support more than a locally elevated risk. ...Northwest/northern Rockies... While thunderstorms will be possible in association with the upper low, recent precipitation and substantial cloud cover should generally limit the overall risk for lightning ignitions. A continued downward trend in fuel receptiveness is expected Wednesday. Highlights do not appear warranted at this time. ...Please see www.spc.noaa.gov/fire for graphic product... Read more