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WW 522 SEVERE TSTM MT 172130Z - 180400Z
URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 522 NWS Storm Prediction Center Norman OK 330 PM MDT Thu Jul 17 2025 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Northern Montana * Effective this Thursday afternoon and evening from 330 PM until 1000 PM MDT. * Primary threats include... Scattered large hail and isolated very large hail events to 2 inches in diameter possible Scattered damaging wind gusts to 65 mph possible SUMMARY...Thunderstorms will continue to develop and intensify across north-central Montana this afternoon and track southeastward across the watch area. A few supercells are expected, capable of large hail and damaging wind gusts. The severe thunderstorm watch area is approximately along and 60 statute miles north and south of a line from 60 miles north northwest of Great Falls MT to 50 miles southeast of Glasgow MT. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU2). PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER...A Severe Thunderstorm Watch means conditions are favorable for severe thunderstorms in and close to the watch area. Persons in these areas should be on the lookout for threatening weather conditions and listen for later statements and possible warnings. Severe thunderstorms can and occasionally do produce tornadoes. && OTHER WATCH INFORMATION...CONTINUE...WW 521... AVIATION...A few severe thunderstorms with hail surface and aloft to 2 inches. Extreme turbulence and surface wind gusts to 55 knots. A few cumulonimbi with maximum tops to 500. Mean storm motion vector 28030. ...Hart Read more

SPC Day 3-8 Fire Weather Outlook
Day 3-8 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0455 PM CDT Thu Jul 17 2025 Valid 191200Z - 251200Z ...Days 3-5/Saturday-Monday... A mid-level trough and attendant dry cold front will move through the Pacific Northwest on Day 3/Saturday. Robust onshore flow will persist across the Cascades, bringing breezy conditions to the Columbia Basin. Despite cooler post-frontal temperatures, sustained west winds of around 15 mph (20 mph in favored Cascade gaps) and relative humidity as low as 15 percent will support a fire weather threat amid dry fuels across the Columbia Basin. Enhanced mid-level flow at the base of the trough overrunning a dry boundary layer in place across southern Idaho will bring stronger winds to the Snake River Plain Day 3/Saturday, raising wildfire spread potential within critically dry fuels. A deepening, positively-tilted trough across the Pacific Northwest and increase in mid-level winds will support a broader area of dry southwesterly flow across the Great Basin, NV and southern ID by Day 4/Sunday, with the fire weather threat shifting southeastward to include northwestern UT by Day 5/Monday. The trough will also aid in pushing residual monsoon moisture and thunderstorm development currently across portions of the Intermountain West along and east of the Continental Divide by early next week, while also mitigating fire weather concerns for the Pacific Northwest as cooler temperatures, cloud cover and higher relative humidity move into the region. ...Days 6-8/Tuesday-Thursday... Long term ensemble guidance indicates some form of mid-level troughing persisting across the Pacific Northwest through the middle of next week, maintaining a dry southwesterly flow over much of the interior of the West. However, relaxing mid-level flow and reduced surface pressure gradients as a subtropical high propagates westward across the southern U.S. should promote lighter winds across the Southwestern U.S., particularly for Days 7-8/Wednesday-Thursday. ..Williams.. 07/17/2025 ...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 0455 PM CDT Thu Jul 17 2025 Valid 191200Z - 251200Z ...Days 3-5/Saturday-Monday... A mid-level trough and attendant dry cold front will move through the Pacific Northwest on Day 3/Saturday. Robust onshore flow will persist across the Cascades, bringing breezy conditions to the Columbia Basin. Despite cooler post-frontal temperatures, sustained west winds of around 15 mph (20 mph in favored Cascade gaps) and relative humidity as low as 15 percent will support a fire weather threat amid dry fuels across the Columbia Basin. Enhanced mid-level flow at the base of the trough overrunning a dry boundary layer in place across southern Idaho will bring stronger winds to the Snake River Plain Day 3/Saturday, raising wildfire spread potential within critically dry fuels. A deepening, positively-tilted trough across the Pacific Northwest and increase in mid-level winds will support a broader area of dry southwesterly flow across the Great Basin, NV and southern ID by Day 4/Sunday, with the fire weather threat shifting southeastward to include northwestern UT by Day 5/Monday. The trough will also aid in pushing residual monsoon moisture and thunderstorm development currently across portions of the Intermountain West along and east of the Continental Divide by early next week, while also mitigating fire weather concerns for the Pacific Northwest as cooler temperatures, cloud cover and higher relative humidity move into the region. ...Days 6-8/Tuesday-Thursday... Long term ensemble guidance indicates some form of mid-level troughing persisting across the Pacific Northwest through the middle of next week, maintaining a dry southwesterly flow over much of the interior of the West. However, relaxing mid-level flow and reduced surface pressure gradients as a subtropical high propagates westward across the southern U.S. should promote lighter winds across the Southwestern U.S., particularly for Days 7-8/Wednesday-Thursday. ..Williams.. 07/17/2025 ...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 0455 PM CDT Thu Jul 17 2025 Valid 191200Z - 251200Z ...Days 3-5/Saturday-Monday... A mid-level trough and attendant dry cold front will move through the Pacific Northwest on Day 3/Saturday. Robust onshore flow will persist across the Cascades, bringing breezy conditions to the Columbia Basin. Despite cooler post-frontal temperatures, sustained west winds of around 15 mph (20 mph in favored Cascade gaps) and relative humidity as low as 15 percent will support a fire weather threat amid dry fuels across the Columbia Basin. Enhanced mid-level flow at the base of the trough overrunning a dry boundary layer in place across southern Idaho will bring stronger winds to the Snake River Plain Day 3/Saturday, raising wildfire spread potential within critically dry fuels. A deepening, positively-tilted trough across the Pacific Northwest and increase in mid-level winds will support a broader area of dry southwesterly flow across the Great Basin, NV and southern ID by Day 4/Sunday, with the fire weather threat shifting southeastward to include northwestern UT by Day 5/Monday. The trough will also aid in pushing residual monsoon moisture and thunderstorm development currently across portions of the Intermountain West along and east of the Continental Divide by early next week, while also mitigating fire weather concerns for the Pacific Northwest as cooler temperatures, cloud cover and higher relative humidity move into the region. ...Days 6-8/Tuesday-Thursday... Long term ensemble guidance indicates some form of mid-level troughing persisting across the Pacific Northwest through the middle of next week, maintaining a dry southwesterly flow over much of the interior of the West. However, relaxing mid-level flow and reduced surface pressure gradients as a subtropical high propagates westward across the southern U.S. should promote lighter winds across the Southwestern U.S., particularly for Days 7-8/Wednesday-Thursday. ..Williams.. 07/17/2025 ...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 0455 PM CDT Thu Jul 17 2025 Valid 191200Z - 251200Z ...Days 3-5/Saturday-Monday... A mid-level trough and attendant dry cold front will move through the Pacific Northwest on Day 3/Saturday. Robust onshore flow will persist across the Cascades, bringing breezy conditions to the Columbia Basin. Despite cooler post-frontal temperatures, sustained west winds of around 15 mph (20 mph in favored Cascade gaps) and relative humidity as low as 15 percent will support a fire weather threat amid dry fuels across the Columbia Basin. Enhanced mid-level flow at the base of the trough overrunning a dry boundary layer in place across southern Idaho will bring stronger winds to the Snake River Plain Day 3/Saturday, raising wildfire spread potential within critically dry fuels. A deepening, positively-tilted trough across the Pacific Northwest and increase in mid-level winds will support a broader area of dry southwesterly flow across the Great Basin, NV and southern ID by Day 4/Sunday, with the fire weather threat shifting southeastward to include northwestern UT by Day 5/Monday. The trough will also aid in pushing residual monsoon moisture and thunderstorm development currently across portions of the Intermountain West along and east of the Continental Divide by early next week, while also mitigating fire weather concerns for the Pacific Northwest as cooler temperatures, cloud cover and higher relative humidity move into the region. ...Days 6-8/Tuesday-Thursday... Long term ensemble guidance indicates some form of mid-level troughing persisting across the Pacific Northwest through the middle of next week, maintaining a dry southwesterly flow over much of the interior of the West. However, relaxing mid-level flow and reduced surface pressure gradients as a subtropical high propagates westward across the southern U.S. should promote lighter winds across the Southwestern U.S., particularly for Days 7-8/Wednesday-Thursday. ..Williams.. 07/17/2025 ...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 0455 PM CDT Thu Jul 17 2025 Valid 191200Z - 251200Z ...Days 3-5/Saturday-Monday... A mid-level trough and attendant dry cold front will move through the Pacific Northwest on Day 3/Saturday. Robust onshore flow will persist across the Cascades, bringing breezy conditions to the Columbia Basin. Despite cooler post-frontal temperatures, sustained west winds of around 15 mph (20 mph in favored Cascade gaps) and relative humidity as low as 15 percent will support a fire weather threat amid dry fuels across the Columbia Basin. Enhanced mid-level flow at the base of the trough overrunning a dry boundary layer in place across southern Idaho will bring stronger winds to the Snake River Plain Day 3/Saturday, raising wildfire spread potential within critically dry fuels. A deepening, positively-tilted trough across the Pacific Northwest and increase in mid-level winds will support a broader area of dry southwesterly flow across the Great Basin, NV and southern ID by Day 4/Sunday, with the fire weather threat shifting southeastward to include northwestern UT by Day 5/Monday. The trough will also aid in pushing residual monsoon moisture and thunderstorm development currently across portions of the Intermountain West along and east of the Continental Divide by early next week, while also mitigating fire weather concerns for the Pacific Northwest as cooler temperatures, cloud cover and higher relative humidity move into the region. ...Days 6-8/Tuesday-Thursday... Long term ensemble guidance indicates some form of mid-level troughing persisting across the Pacific Northwest through the middle of next week, maintaining a dry southwesterly flow over much of the interior of the West. However, relaxing mid-level flow and reduced surface pressure gradients as a subtropical high propagates westward across the southern U.S. should promote lighter winds across the Southwestern U.S., particularly for Days 7-8/Wednesday-Thursday. ..Williams.. 07/17/2025 ...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 0455 PM CDT Thu Jul 17 2025 Valid 191200Z - 251200Z ...Days 3-5/Saturday-Monday... A mid-level trough and attendant dry cold front will move through the Pacific Northwest on Day 3/Saturday. Robust onshore flow will persist across the Cascades, bringing breezy conditions to the Columbia Basin. Despite cooler post-frontal temperatures, sustained west winds of around 15 mph (20 mph in favored Cascade gaps) and relative humidity as low as 15 percent will support a fire weather threat amid dry fuels across the Columbia Basin. Enhanced mid-level flow at the base of the trough overrunning a dry boundary layer in place across southern Idaho will bring stronger winds to the Snake River Plain Day 3/Saturday, raising wildfire spread potential within critically dry fuels. A deepening, positively-tilted trough across the Pacific Northwest and increase in mid-level winds will support a broader area of dry southwesterly flow across the Great Basin, NV and southern ID by Day 4/Sunday, with the fire weather threat shifting southeastward to include northwestern UT by Day 5/Monday. The trough will also aid in pushing residual monsoon moisture and thunderstorm development currently across portions of the Intermountain West along and east of the Continental Divide by early next week, while also mitigating fire weather concerns for the Pacific Northwest as cooler temperatures, cloud cover and higher relative humidity move into the region. ...Days 6-8/Tuesday-Thursday... Long term ensemble guidance indicates some form of mid-level troughing persisting across the Pacific Northwest through the middle of next week, maintaining a dry southwesterly flow over much of the interior of the West. However, relaxing mid-level flow and reduced surface pressure gradients as a subtropical high propagates westward across the southern U.S. should promote lighter winds across the Southwestern U.S., particularly for Days 7-8/Wednesday-Thursday. ..Williams.. 07/17/2025 ...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 0455 PM CDT Thu Jul 17 2025 Valid 191200Z - 251200Z ...Days 3-5/Saturday-Monday... A mid-level trough and attendant dry cold front will move through the Pacific Northwest on Day 3/Saturday. Robust onshore flow will persist across the Cascades, bringing breezy conditions to the Columbia Basin. Despite cooler post-frontal temperatures, sustained west winds of around 15 mph (20 mph in favored Cascade gaps) and relative humidity as low as 15 percent will support a fire weather threat amid dry fuels across the Columbia Basin. Enhanced mid-level flow at the base of the trough overrunning a dry boundary layer in place across southern Idaho will bring stronger winds to the Snake River Plain Day 3/Saturday, raising wildfire spread potential within critically dry fuels. A deepening, positively-tilted trough across the Pacific Northwest and increase in mid-level winds will support a broader area of dry southwesterly flow across the Great Basin, NV and southern ID by Day 4/Sunday, with the fire weather threat shifting southeastward to include northwestern UT by Day 5/Monday. The trough will also aid in pushing residual monsoon moisture and thunderstorm development currently across portions of the Intermountain West along and east of the Continental Divide by early next week, while also mitigating fire weather concerns for the Pacific Northwest as cooler temperatures, cloud cover and higher relative humidity move into the region. ...Days 6-8/Tuesday-Thursday... Long term ensemble guidance indicates some form of mid-level troughing persisting across the Pacific Northwest through the middle of next week, maintaining a dry southwesterly flow over much of the interior of the West. However, relaxing mid-level flow and reduced surface pressure gradients as a subtropical high propagates westward across the southern U.S. should promote lighter winds across the Southwestern U.S., particularly for Days 7-8/Wednesday-Thursday. ..Williams.. 07/17/2025 ...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 0455 PM CDT Thu Jul 17 2025 Valid 191200Z - 251200Z ...Days 3-5/Saturday-Monday... A mid-level trough and attendant dry cold front will move through the Pacific Northwest on Day 3/Saturday. Robust onshore flow will persist across the Cascades, bringing breezy conditions to the Columbia Basin. Despite cooler post-frontal temperatures, sustained west winds of around 15 mph (20 mph in favored Cascade gaps) and relative humidity as low as 15 percent will support a fire weather threat amid dry fuels across the Columbia Basin. Enhanced mid-level flow at the base of the trough overrunning a dry boundary layer in place across southern Idaho will bring stronger winds to the Snake River Plain Day 3/Saturday, raising wildfire spread potential within critically dry fuels. A deepening, positively-tilted trough across the Pacific Northwest and increase in mid-level winds will support a broader area of dry southwesterly flow across the Great Basin, NV and southern ID by Day 4/Sunday, with the fire weather threat shifting southeastward to include northwestern UT by Day 5/Monday. The trough will also aid in pushing residual monsoon moisture and thunderstorm development currently across portions of the Intermountain West along and east of the Continental Divide by early next week, while also mitigating fire weather concerns for the Pacific Northwest as cooler temperatures, cloud cover and higher relative humidity move into the region. ...Days 6-8/Tuesday-Thursday... Long term ensemble guidance indicates some form of mid-level troughing persisting across the Pacific Northwest through the middle of next week, maintaining a dry southwesterly flow over much of the interior of the West. However, relaxing mid-level flow and reduced surface pressure gradients as a subtropical high propagates westward across the southern U.S. should promote lighter winds across the Southwestern U.S., particularly for Days 7-8/Wednesday-Thursday. ..Williams.. 07/17/2025 ...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 0455 PM CDT Thu Jul 17 2025 Valid 191200Z - 251200Z ...Days 3-5/Saturday-Monday... A mid-level trough and attendant dry cold front will move through the Pacific Northwest on Day 3/Saturday. Robust onshore flow will persist across the Cascades, bringing breezy conditions to the Columbia Basin. Despite cooler post-frontal temperatures, sustained west winds of around 15 mph (20 mph in favored Cascade gaps) and relative humidity as low as 15 percent will support a fire weather threat amid dry fuels across the Columbia Basin. Enhanced mid-level flow at the base of the trough overrunning a dry boundary layer in place across southern Idaho will bring stronger winds to the Snake River Plain Day 3/Saturday, raising wildfire spread potential within critically dry fuels. A deepening, positively-tilted trough across the Pacific Northwest and increase in mid-level winds will support a broader area of dry southwesterly flow across the Great Basin, NV and southern ID by Day 4/Sunday, with the fire weather threat shifting southeastward to include northwestern UT by Day 5/Monday. The trough will also aid in pushing residual monsoon moisture and thunderstorm development currently across portions of the Intermountain West along and east of the Continental Divide by early next week, while also mitigating fire weather concerns for the Pacific Northwest as cooler temperatures, cloud cover and higher relative humidity move into the region. ...Days 6-8/Tuesday-Thursday... Long term ensemble guidance indicates some form of mid-level troughing persisting across the Pacific Northwest through the middle of next week, maintaining a dry southwesterly flow over much of the interior of the West. However, relaxing mid-level flow and reduced surface pressure gradients as a subtropical high propagates westward across the southern U.S. should promote lighter winds across the Southwestern U.S., particularly for Days 7-8/Wednesday-Thursday. ..Williams.. 07/17/2025 ...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 0455 PM CDT Thu Jul 17 2025 Valid 191200Z - 251200Z ...Days 3-5/Saturday-Monday... A mid-level trough and attendant dry cold front will move through the Pacific Northwest on Day 3/Saturday. Robust onshore flow will persist across the Cascades, bringing breezy conditions to the Columbia Basin. Despite cooler post-frontal temperatures, sustained west winds of around 15 mph (20 mph in favored Cascade gaps) and relative humidity as low as 15 percent will support a fire weather threat amid dry fuels across the Columbia Basin. Enhanced mid-level flow at the base of the trough overrunning a dry boundary layer in place across southern Idaho will bring stronger winds to the Snake River Plain Day 3/Saturday, raising wildfire spread potential within critically dry fuels. A deepening, positively-tilted trough across the Pacific Northwest and increase in mid-level winds will support a broader area of dry southwesterly flow across the Great Basin, NV and southern ID by Day 4/Sunday, with the fire weather threat shifting southeastward to include northwestern UT by Day 5/Monday. The trough will also aid in pushing residual monsoon moisture and thunderstorm development currently across portions of the Intermountain West along and east of the Continental Divide by early next week, while also mitigating fire weather concerns for the Pacific Northwest as cooler temperatures, cloud cover and higher relative humidity move into the region. ...Days 6-8/Tuesday-Thursday... Long term ensemble guidance indicates some form of mid-level troughing persisting across the Pacific Northwest through the middle of next week, maintaining a dry southwesterly flow over much of the interior of the West. However, relaxing mid-level flow and reduced surface pressure gradients as a subtropical high propagates westward across the southern U.S. should promote lighter winds across the Southwestern U.S., particularly for Days 7-8/Wednesday-Thursday. ..Williams.. 07/17/2025 ...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 0455 PM CDT Thu Jul 17 2025 Valid 191200Z - 251200Z ...Days 3-5/Saturday-Monday... A mid-level trough and attendant dry cold front will move through the Pacific Northwest on Day 3/Saturday. Robust onshore flow will persist across the Cascades, bringing breezy conditions to the Columbia Basin. Despite cooler post-frontal temperatures, sustained west winds of around 15 mph (20 mph in favored Cascade gaps) and relative humidity as low as 15 percent will support a fire weather threat amid dry fuels across the Columbia Basin. Enhanced mid-level flow at the base of the trough overrunning a dry boundary layer in place across southern Idaho will bring stronger winds to the Snake River Plain Day 3/Saturday, raising wildfire spread potential within critically dry fuels. A deepening, positively-tilted trough across the Pacific Northwest and increase in mid-level winds will support a broader area of dry southwesterly flow across the Great Basin, NV and southern ID by Day 4/Sunday, with the fire weather threat shifting southeastward to include northwestern UT by Day 5/Monday. The trough will also aid in pushing residual monsoon moisture and thunderstorm development currently across portions of the Intermountain West along and east of the Continental Divide by early next week, while also mitigating fire weather concerns for the Pacific Northwest as cooler temperatures, cloud cover and higher relative humidity move into the region. ...Days 6-8/Tuesday-Thursday... Long term ensemble guidance indicates some form of mid-level troughing persisting across the Pacific Northwest through the middle of next week, maintaining a dry southwesterly flow over much of the interior of the West. However, relaxing mid-level flow and reduced surface pressure gradients as a subtropical high propagates westward across the southern U.S. should promote lighter winds across the Southwestern U.S., particularly for Days 7-8/Wednesday-Thursday. ..Williams.. 07/17/2025 ...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 0455 PM CDT Thu Jul 17 2025 Valid 191200Z - 251200Z ...Days 3-5/Saturday-Monday... A mid-level trough and attendant dry cold front will move through the Pacific Northwest on Day 3/Saturday. Robust onshore flow will persist across the Cascades, bringing breezy conditions to the Columbia Basin. Despite cooler post-frontal temperatures, sustained west winds of around 15 mph (20 mph in favored Cascade gaps) and relative humidity as low as 15 percent will support a fire weather threat amid dry fuels across the Columbia Basin. Enhanced mid-level flow at the base of the trough overrunning a dry boundary layer in place across southern Idaho will bring stronger winds to the Snake River Plain Day 3/Saturday, raising wildfire spread potential within critically dry fuels. A deepening, positively-tilted trough across the Pacific Northwest and increase in mid-level winds will support a broader area of dry southwesterly flow across the Great Basin, NV and southern ID by Day 4/Sunday, with the fire weather threat shifting southeastward to include northwestern UT by Day 5/Monday. The trough will also aid in pushing residual monsoon moisture and thunderstorm development currently across portions of the Intermountain West along and east of the Continental Divide by early next week, while also mitigating fire weather concerns for the Pacific Northwest as cooler temperatures, cloud cover and higher relative humidity move into the region. ...Days 6-8/Tuesday-Thursday... Long term ensemble guidance indicates some form of mid-level troughing persisting across the Pacific Northwest through the middle of next week, maintaining a dry southwesterly flow over much of the interior of the West. However, relaxing mid-level flow and reduced surface pressure gradients as a subtropical high propagates westward across the southern U.S. should promote lighter winds across the Southwestern U.S., particularly for Days 7-8/Wednesday-Thursday. ..Williams.. 07/17/2025 ...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 0455 PM CDT Thu Jul 17 2025 Valid 191200Z - 251200Z ...Days 3-5/Saturday-Monday... A mid-level trough and attendant dry cold front will move through the Pacific Northwest on Day 3/Saturday. Robust onshore flow will persist across the Cascades, bringing breezy conditions to the Columbia Basin. Despite cooler post-frontal temperatures, sustained west winds of around 15 mph (20 mph in favored Cascade gaps) and relative humidity as low as 15 percent will support a fire weather threat amid dry fuels across the Columbia Basin. Enhanced mid-level flow at the base of the trough overrunning a dry boundary layer in place across southern Idaho will bring stronger winds to the Snake River Plain Day 3/Saturday, raising wildfire spread potential within critically dry fuels. A deepening, positively-tilted trough across the Pacific Northwest and increase in mid-level winds will support a broader area of dry southwesterly flow across the Great Basin, NV and southern ID by Day 4/Sunday, with the fire weather threat shifting southeastward to include northwestern UT by Day 5/Monday. The trough will also aid in pushing residual monsoon moisture and thunderstorm development currently across portions of the Intermountain West along and east of the Continental Divide by early next week, while also mitigating fire weather concerns for the Pacific Northwest as cooler temperatures, cloud cover and higher relative humidity move into the region. ...Days 6-8/Tuesday-Thursday... Long term ensemble guidance indicates some form of mid-level troughing persisting across the Pacific Northwest through the middle of next week, maintaining a dry southwesterly flow over much of the interior of the West. However, relaxing mid-level flow and reduced surface pressure gradients as a subtropical high propagates westward across the southern U.S. should promote lighter winds across the Southwestern U.S., particularly for Days 7-8/Wednesday-Thursday. ..Williams.. 07/17/2025 ...Please see www.spc.noaa.gov/fire for graphic product... Read more

Wallowa County commissioners officially declared a drought emergency on July 16. Local ranchers anticipated needing to begin feeding hay to livestock in September, nearly four months earlier than last year. Elkhorn Media Group (Pendleton, Ore.), July 17, 2025

WW 0522 Status Updates
STATUS FOR WATCH 0522 HAS NOT BEEN ISSUED YET Read more

Although Union County had a strong snowpack mid-winter, the spring growing season was unusually dry. Over the past 60 days, nearly all parts of Union County received less than half of their normal precipitation. Consequently, crop yields were already reduced, and irrigation stream flows are declining rapidly. Elkhorn Media Group (Pendleton, Ore.), July 17, 2025

WW 0521 Status Updates
STATUS REPORT ON WW 521 THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA. FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 1700 ..WENDT..07/17/25 ATTN...WFO...CAR...GYX...BTV... STATUS REPORT FOR WS 521 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS MEC003-007-017-021-025-172240- ME . MAINE COUNTIES INCLUDED ARE AROOSTOOK FRANKLIN OXFORD PISCATAQUIS SOMERSET NHC003-007-009-172240- NH . NEW HAMPSHIRE COUNTIES INCLUDED ARE CARROLL COOS GRAFTON NYC019-172240- NY . NEW YORK COUNTIES INCLUDED ARE CLINTON Read more

WW 521 SEVERE TSTM ME NH NY VT 171825Z - 180100Z
URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 521 NWS Storm Prediction Center Norman OK 225 PM EDT Thu Jul 17 2025 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Western and Northern Maine Northern and Central New Hampshire Far Northern New York Northern and Central Vermont * Effective this Thursday afternoon and evening from 225 PM until 900 PM EDT. * Primary threats include... Scattered damaging wind gusts to 65 mph possible A tornado or two possible SUMMARY...Scattered thunderstorms are forecast to develop and intensify this afternoon across the Watch area. A couple of transient supercells are possible as well as a few organized multicells. The primary severe hazard will be strong to severe gusts (50-65 mph) capable of wind damage, but a tornado is possible with the more intense transient supercells. The severe thunderstorm watch area is approximately along and 75 statute miles east and west of a line from 20 miles north northwest of Caribou ME to 15 miles south southwest of Montpelier VT. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU1). PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER...A Severe Thunderstorm Watch means conditions are favorable for severe thunderstorms in and close to the watch area. Persons in these areas should be on the lookout for threatening weather conditions and listen for later statements and possible warnings. Severe thunderstorms can and occasionally do produce tornadoes. && AVIATION...A few severe thunderstorms with hail surface and aloft to 1 inch. Extreme turbulence and surface wind gusts to 55 knots. A few cumulonimbi with maximum tops to 400. Mean storm motion vector 23030. ...Smith Read more

No Mesoscale Discussions are in effect as of Thu Jul 17 20:00:13 UTC 2025.