Expected

Responsive action SHOULD be taken soon (within next hour)

Montana Winter Weather Advisory | Effective 04/21/2026 12:50

* WHAT...Snow expected. There is a likelihood of moderate winter weather impacts. Total snow accumulations of 1 to 3 inches below 4000 feet, 4 to 7 inches at pass level and over 10 inches in the high terrain. * WHERE...Glacier National Park, Marias Pass, Bad Rock Canyon, Essex, Highway 83 Bigfork to Swan Lake, and Polebridge. * WHEN...From 6 PM Wednesday to 6 PM MDT Thursday. * IMPACTS...For MODERATE winter weather impacts, expect disruptions to normal activities. Hazardous traveling conditions. Use extra

Montana Winter Weather Advisory | Effective 04/21/2026 12:50

* WHAT...Snow expected. There is a likelihood of moderate to isolated major winter weather impacts. Total snow accumulations of 2 and 4 inches in the valleys and 6 to 12 inches in the mountains. * WHERE...Highway 200 Bonner to Greenough, I-90 East Missoula to Bearmouth, and Highway 83 Seeley Lake to Condon. * WHEN...From 6 PM Wednesday to noon MDT Friday. * IMPACTS...For MODERATE winter weather impacts, expect disruptions to normal activities. Hazardous traveling conditions. Use extra

Montana Winter Weather Advisory | Effective 04/21/2026 12:50

* WHAT...Snow expected. There is a likelihood of moderate winter weather impacts. Total snow accumulations of 1 to 5 inches below 4000 feet, 6 to 10 inches at pass level and over 12 inches in the high terrain. * WHERE...Highway 93 Sula to Lost Trail Pass and Lolo Pass. * WHEN...From 6 PM Wednesday to noon MDT Friday. * IMPACTS...For MODERATE winter weather impacts, expect disruptions to normal activities. Hazardous traveling conditions. Use extra caution while driving. Closures and disruptions to infrastructure

Idaho Winter Weather Advisory | Effective 04/21/2026 12:50

* WHAT...Snow expected. There is a likelihood of minor to moderate winter weather impacts. Total snow accumulations between 1 to 3 inches in the valleys, 5 to 10 inches at pass level and over 12 inches in the high terrain. * WHERE...Salmon, Bannock Pass, Shoup, Williams Creek Summit, Highway 28 Tendoy to Lone Pine, Lemhi Pass, and Highway 93 Lost Trail Pass to Gibbonsville. * WHEN...From 6 PM Wednesday to noon MDT Friday. * IMPACTS...For MODERATE winter weather impacts, expect disruptions

Montana Winter Weather Advisory | Effective 04/21/2026 12:50

* WHAT...Snow expected. There is a likelihood of moderate to isolated major winter weather impacts. Total snow accumulations of 2 and 5 inches in the valleys, 5 to 10 inches at pass level, and over 12 inches in the high terrain. Winds gusting as high as 35 mph. * WHERE...Georgetown Lake, Butte, Highway 12 Garrison to Elliston, MacDonald Pass, and Homestake Pass. * WHEN...From 6 PM Wednesday to noon MDT Friday. * IMPACTS...For MODERATE winter weather impacts, expect disruptions

South Dakota Red Flag Warning | Effective 04/21/2026 12:39

* AFFECTED AREA...In South Dakota, Dewey, Potter, Faulk, Spink, Stanley, Sully, Hughes, Hyde, Hand, Jones, Lyman and Buffalo. * WINDS...South 20 to 30 mph with gusts up to 45 mph. * RELATIVE HUMIDITY...As low as 14 percent. * IMPACTS...Any fires that ignite will spread rapidly and become difficult to control or suppress. A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can

Minnesota, South Dakota Red Flag Warning | Effective 04/21/2026 12:39

* AFFECTED AREA...In Minnesota, Big Stone. In South Dakota, Clark, Codington, Grant, Hamlin and Deuel. * WINDS...South 20 to 25 mph with gusts up to 40 mph. * RELATIVE HUMIDITY...As low as 23 percent. * IMPACTS...Any fires that ignite will spread rapidly and become difficult to control or suppress. A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior.

California Special Weather Statement | Effective 04/21/2026 12:41

At 1241 PM PDT, Doppler radar was tracking strong thunderstorms along a line extending from near Chowchilla to 8 miles north of Cantua Creek. Movement was northeast at 20 mph. HAZARD...Wind gusts up to 40 mph and pea size hail. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Minor hail damage to vegetation is possible. Locations impacted include... Madera, Chowchilla, Kerman, Cantua Creek, Madera Acres, Parkwood,

Colorado High Wind Warning | Effective 04/21/2026 12:45

* WHAT...Southwest winds 30 to 40 mph with gusts up to 65 mph expected. * WHERE...Northern San Luis Valley, and Central San Luis Valley. * WHEN...From 1 PM to 8 PM MDT Wednesday. * IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult, especially for high profile vehicles. * ADDITIONAL DETAILS...Areas of blowing dust could reduce visibility to under a mile at times. Be especially careful near recently

Washington Wind Advisory | Effective 04/21/2026 12:11

* WHAT...West winds 20 to 30 mph with gusts up to 45 mph expected. Localized gusts up to 50 mph possible. * WHERE...Ephrata, Number 2 Canyon, Entiat, Moses Lake, Number 1 Canyon, Cashmere, Othello, Quincy, Badger Mountain Road, Pangborn Airport, Waterville, Chelan, Mansfield, and Wenatchee. * WHEN...From 8 PM this evening to 11 PM PDT Wednesday. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.
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