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Home Return to list Winter Storm Warning 0011 Issued by the Pocatello Forecast Office
Action: New Issued At: 2025-12-23 13:58:21 592 WWUS45 KPIH 231957 WSWPIH URGENT - WINTER WEATHER MESSAGE National Weather Service Pocatello ID 1257 PM MST Tue Dec 23 2025 IDZ073-074-241300- /O.NEW.KPIH.WS.W.0011.251224T1200Z-251226T0000Z/ Sun Valley Region-Big Lost Highlands/Copper Basin- Including the cities of Copper Basin, Galena, Ketchum, and Sun Valley 1257 PM MST Tue Dec 23 2025 ...WINTER STORM WARNING IN EFFECT FROM 5 AM WEDNESDAY TO 5 PM MST THURSDAY... * WHAT...Heavy snow expected. Total snow accumulations 2 to 22 inches above 6500 feet elevation up to 8500 feet elevation. Winds gusting as high as 35 mph. * WHERE...Big Lost Highlands/Copper Basin and Sun Valley Region. * WHEN...From 5 AM Wednesday to 5 PM MST Thursday. * IMPACTS...Travel could be very difficult, and recommended to depart tonight or early Wednesday. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. Call 5 1 1 or visit 511.idaho.gov for the latest road conditions. && $$ IDZ072-241300- /O.NEW.KPIH.WW.Y.0022.251224T1200Z-251226T0000Z/ Sawtooth/Stanley Basin- Including the cities of Stanley 1257 PM MST Tue Dec 23 2025 ...WINTER WEATHER ADVISORY IN EFFECT FROM 5 AM WEDNESDAY TO 5 PM MST THURSDAY... * WHAT...Snow expected. Total snow accumulations up to 14 inches with 5 inches or more above 7000 feet elevation. * WHERE...Sawtooth/Stanley Basin. * WHEN...From 5 AM Wednesday to 5 PM MST Thursday. * IMPACTS...Travel could be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. Call 5 1 1 or visit 511.idaho.gov for the latest road conditions. && $$ IDZ066-241300- /O.NEW.KPIH.WW.Y.0022.251224T1800Z-251226T0000Z/ Centennial Mountains - Island Park- Including the cities of Kilgore and Island Park 1257 PM MST Tue Dec 23 2025 ...WINTER WEATHER ADVISORY IN EFFECT FROM 11 AM WEDNESDAY TO 5 PM MST THURSDAY... * WHAT...Snow expected. Total snow accumulations up to 8 inches with accumulations of 5 inches or more above 7500 feet elevation. Winds gusting as high as 35 mph. * WHERE...Centennial Mountains - Island Park. * WHEN...From 11 AM Wednesday to 5 PM MST Thursday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Wednesday evening and Thursday morning commutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. Call 5 1 1 or visit 511.idaho.gov for the latest road conditions. && $$ IDZ067-068-070-241300- /O.NEW.KPIH.WW.Y.0022.251224T1800Z-251226T0000Z/ Beaverhead - Lemhi Highlands-Lost River Valley-Challis/Pahsimeroi Valleys- Including the cities of Edie School, Mackay, Chilly, Challis, Howe, Small, Spencer, Arco, and Dubois 1257 PM MST Tue Dec 23 2025 ...WINTER WEATHER ADVISORY IN EFFECT FROM 11 AM WEDNESDAY TO 5 PM MST THURSDAY... * WHAT...Snow expected. Total snow accumulations up to 6 inches with accumulations of 1 inch or more above 7000 feet elevation. Winds gusting as high as 35 mph. * WHERE...Challis/Pahsimeroi Valleys, Lost River Valley, and Beaverhead - Lemhi Highlands. * WHEN...From 11 AM Wednesday to 5 PM MST Thursday. * IMPACTS...Travel could be very difficult if headed above 7000 feet elevation. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. Call 5 1 1 or visit 511.idaho.gov for the latest road conditions. && $$ IDZ069-071-075-241300- /O.NEW.KPIH.WW.Y.0022.251224T1800Z-251226T0000Z/ Lost River Range-Frank Church Wilderness-Wood River Foothills- Including the cities of Picabo, Hailey, Bellevue, Borah Peak, and Clayton 1257 PM MST Tue Dec 23 2025 ...WINTER WEATHER ADVISORY IN EFFECT FROM 11 AM WEDNESDAY TO 5 PM MST THURSDAY... * WHAT...Snow expected. Total snow accumulations up to 10 inches with accumulations of 5 inches or more above 7000 feet elevation. Winds gusting as high as 35 mph. * WHERE...Frank Church Wilderness, Lost River Range, and Wood River Foothills. * WHEN...From 11 AM Wednesday to 5 PM MST Thursday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Wednesday evening and Thursday morning commutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. Call 5 1 1 or visit 511.idaho.gov for the latest road conditions. && $$ Visit weather.gov/pocatello for more information. Messick Action: Continued Issued At: 2025-12-23 21:10:02 609 WWUS45 KPIH 240309 WSWPIH URGENT - WINTER WEATHER MESSAGE National Weather Service Pocatello ID 809 PM MST Tue Dec 23 2025 IDZ066>068-070-075-240415- /O.CAN.KPIH.WW.Y.0022.251224T1800Z-251226T0000Z/ Centennial Mountains - Island Park-Beaverhead - Lemhi Highlands- Lost River Valley-Challis/Pahsimeroi Valleys-Wood River Foothills- Including the cities of Picabo, Edie School, Dubois, Mackay, Chilly, Kilgore, Island Park, Small, Challis, Arco, Howe, Spencer, Bellevue, and Hailey 809 PM MST Tue Dec 23 2025 ...WINTER WEATHER ADVISORY IS CANCELLED... Though there is some snow in the forecast for these zones, most all the snow is above 7000 to 7500 feet. There is no snow forecast for Hailey, Arco, Challis, and Monida pass. Raynolds pass and Targhee pass have less than 0.5 inch of snow forecasted. There will be a lot of rain (1 to 2 inches for all zones but Challis), but again the snow levels are currently too high. If snow levels drop 500 to 1000 feet this will change. For Friday morning, there is snow forecast in all these areas with the next wave of moisture and much cooler temperatures expected. $$ IDZ073-074-241215- /O.CON.KPIH.WS.W.0011.251224T1200Z-251226T0000Z/ Sun Valley Region-Big Lost Highlands/Copper Basin- Including the cities of Ketchum, Galena, Copper Basin, and Sun Valley 809 PM MST Tue Dec 23 2025 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 5 AM WEDNESDAY TO 5 PM MST THURSDAY... * WHAT...Heavy snow expected. Total snow accumulations of around 5 inches to 1 foot at elevations 6500 feet to 8000 feet. Above 8000 feet expect 1 to 2 feet of snow. For highest peaks, up to 3 feet of snow is likely. For Galena Summit about 1 foot of snow is expected. Winds gusting as high as 35 mph. * WHERE...Big Lost Highlands/Copper Basin and Sun Valley Region. * WHEN...From 5 AM Wednesday to 5 PM MST Thursday. * IMPACTS...Travel could be very difficult to impossible, mainly for the Galena Summit area. The hazardous conditions could impact the Wednesday morning and evening commutes. Expect blowing and drifting snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. Call 5 1 1 or visit 511.idaho.gov for the latest road conditions. && $$ IDZ069-071-241215- /O.EXT.KPIH.WW.Y.0022.251224T1200Z-251226T0000Z/ Lost River Range-Frank Church Wilderness- Including the cities of Clayton and Borah Peak 809 PM MST Tue Dec 23 2025 ...WINTER WEATHER ADVISORY NOW IN EFFECT FROM 5 AM WEDNESDAY TO 5 PM MST THURSDAY... * WHAT...Moderate to heavy snow expected. Total snow accumulations of around 5 inches to 1 foot at elevations 6500 feet to 8000 feet. For highest peaks expect 1 to 2 feet of snow. Winds gusting as high as 35 mph. Winds gusting as high as 35 mph. * WHERE...Frank Church Wilderness and Lost River Range. * WHEN...From 5 AM Wednesday to 5 PM MST Thursday. * IMPACTS...Plan on slippery road conditions. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. Call 5 1 1 or visit 511.idaho.gov for the latest road conditions. && $$ IDZ072-241215- /O.CON.KPIH.WW.Y.0022.251224T1200Z-251226T0000Z/ Sawtooth/Stanley Basin- Including the cities of Stanley 809 PM MST Tue Dec 23 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 5 AM WEDNESDAY TO 5 PM MST THURSDAY... * WHAT...Snow expected above . Total snow accumulations up to 14 inches. * WHERE...Sawtooth/Stanley Basin. * WHEN...From 5 AM Wednesday to 5 PM MST Thursday. * IMPACTS...Travel could be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. Call 5 1 1 or visit 511.idaho.gov for the latest road conditions. && $$ Visit weather.gov/pocatello for more information. Wyatt Action: Continued Issued At: 2025-12-23 21:31:03 199 WWUS45 KPIH 240330 WSWPIH URGENT - WINTER WEATHER MESSAGE National Weather Service Pocatello ID 830 PM MST Tue Dec 23 2025 IDZ073-074-241200- /O.CON.KPIH.WS.W.0011.251224T1200Z-251226T0000Z/ Sun Valley Region-Big Lost Highlands/Copper Basin- Including the cities of Ketchum, Galena, Copper Basin, and Sun Valley 830 PM MST Tue Dec 23 2025 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 5 AM WEDNESDAY TO 5 PM MST THURSDAY... * WHAT...Heavy snow expected. Total snow accumulations of around 5 inches to 1 foot at elevations 6500 feet to 8000 feet. Above 8000 feet expect 1 to 2 feet of snow. For highest peaks, up to 3 feet of snow is likely. For Galena Summit about 1 foot of snow is expected. Winds gusting as high as 35 mph. * WHERE...Big Lost Highlands/Copper Basin and Sun Valley Region. * WHEN...From 5 AM Wednesday to 5 PM MST Thursday. * IMPACTS...Travel could be very difficult to impossible, mainly for the Galena Summit area. The hazardous conditions could impact the Wednesday morning and evening commutes. Expect blowing and drifting snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. Call 5 1 1 or visit 511.idaho.gov for the latest road conditions. && $$ IDZ069-071-072-241200- /O.CON.KPIH.WW.Y.0022.251224T1200Z-251226T0000Z/ Lost River Range-Frank Church Wilderness-Sawtooth/Stanley Basin- Including the cities of Stanley, Clayton, and Borah Peak 830 PM MST Tue Dec 23 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 5 AM WEDNESDAY TO 5 PM MST THURSDAY... * WHAT...Moderate to heavy snow expected. Total snow accumulations of around 5 inches to 1 foot at elevations 6500 feet to 8000 feet. For highest peaks expect 1 to 2 feet of snow. Winds gusting as high as 35 mph. * WHERE...Frank Church Wilderness, Lost River Range, and Sawtooth/Stanley Basin. * WHEN...From 5 AM Wednesday to 5 PM MST Thursday. * IMPACTS...Travel could be very difficult above 6500 feet. Back country travel will be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. Call 5 1 1 or visit 511.idaho.gov for the latest road conditions. && $$ Visit weather.gov/pocatello for more information. Wyatt Action: Continued Issued At: 2025-12-24 03:57:19 368 WWUS45 KPIH 240956 WSWPIH URGENT - WINTER WEATHER MESSAGE National Weather Service Pocatello ID 256 AM MST Wed Dec 24 2025 IDZ073-074-242200- /O.CON.KPIH.WS.W.0011.251224T1200Z-251226T0000Z/ Sun Valley Region-Big Lost Highlands/Copper Basin- Including the cities of Sun Valley, Copper Basin, Ketchum, and Galena 256 AM MST Wed Dec 24 2025 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THURSDAY... * WHAT...Heavy snow expected. Total snow accumulations of around 5 inches to 1 foot at elevations 6500 feet to 8000 feet. Above 8000 feet expect 1 to 2 feet of snow. For highest peaks, up to 3 feet of snow is likely. For Galena Summit about 1 foot of snow is expected. Accumulations in Ketchum and Sun Valley will be much lower at 2 inches or less. Winds gusting as high as 35 MPH. * WHERE...Big Lost Highlands/Copper Basin and Sun Valley Region. * WHEN...Until 5 PM MST Thursday. * IMPACTS...Travel could be very difficult to impossible, mainly over Galena Summit and in backcountry areas. Expect blowing and drifting snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. Call 5 1 1 or visit 511.idaho.gov for the latest road conditions. && $$ IDZ069-071-072-242200- /O.CON.KPIH.WW.Y.0022.251224T1200Z-251226T0000Z/ Lost River Range-Frank Church Wilderness-Sawtooth/Stanley Basin- Including the cities of Clayton, Stanley, and Borah Peak 256 AM MST Wed Dec 24 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THURSDAY... * WHAT...Moderate to heavy snow expected. Total snow accumulations of around 5 inches to 1 foot at elevations 6500 feet to 8000 feet. For highest peaks expect 1 to 2 feet of snow. Accumulations in Stanley and Clayton will be much lower at 2 inches or less. Winds gusting as high as 35 MPH. * WHERE...Frank Church Wilderness, Lost River Range, and Sawtooth/Stanley Basin. * WHEN...Until 5 PM MST Thursday. * IMPACTS...Travel could be very difficult above 6500 feet, including in backcountry areas. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. Call 5 1 1 or visit 511.idaho.gov for the latest road conditions. && $$ Visit weather.gov/pocatello for more information. KSmith Action: Continued Issued At: 2025-12-24 14:09:51 517 WWUS45 KPIH 242009 WSWPIH URGENT - WINTER WEATHER MESSAGE National Weather Service Pocatello ID 109 PM MST Wed Dec 24 2025 IDZ073-074-251200- /O.CON.KPIH.WS.W.0011.000000T0000Z-251226T0000Z/ Sun Valley Region-Big Lost Highlands/Copper Basin- Including the cities of Copper Basin, Galena, Ketchum, and Sun Valley 109 PM MST Wed Dec 24 2025 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THURSDAY... * WHAT...Heavy snow expected. Total snow accumulations of around 5 inches to 1 foot at elevations 6500 feet to 8000 feet. Above 8000 feet expect 1 to 2 feet of snow. For highest peaks, up to 3 feet of snow is likely. For Galena Summit about 1 foot of snow is expected. Accumulations in Ketchum and Sun Valley will be much lower at 2 inches or less. Winds gusting as high as 35 MPH. * WHERE...Big Lost Highlands/Copper Basin and Sun Valley Region. * WHEN...Until 5 PM MST Thursday. * IMPACTS...Travel could be very difficult to impossible, mainly over Galena Summit and in backcountry areas. Expect blowing and drifting snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. Call 5 1 1 or visit 511.idaho.gov for the latest road conditions. && $$ IDZ069-071-072-251200- /O.CON.KPIH.WW.Y.0022.000000T0000Z-251226T0000Z/ Lost River Range-Frank Church Wilderness-Sawtooth/Stanley Basin- Including the cities of Stanley, Clayton, and Borah Peak 109 PM MST Wed Dec 24 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THURSDAY... * WHAT...Moderate to heavy snow expected. Total snow accumulations of around 5 inches to 1 foot at elevations 6500 feet to 8000 feet. For highest peaks expect 1 to 2 feet of snow. Accumulations in Stanley and Clayton will be much lower at 2 inches or less. Winds gusting as high as 35 MPH. * WHERE...Frank Church Wilderness, Lost River Range, and Sawtooth/Stanley Basin. * WHEN...Until 5 PM MST Thursday. * IMPACTS...Travel could be very difficult above 6500 feet, including in backcountry areas. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. Call 5 1 1 or visit 511.idaho.gov for the latest road conditions. && $$ Visit weather.gov/pocatello for more information. Messick Action: Continued Issued At: 2025-12-25 05:01:06 477 WWUS45 KPIH 251100 WSWPIH URGENT - WINTER WEATHER MESSAGE National Weather Service Pocatello ID 400 AM MST Thu Dec 25 2025 IDZ073-074-260000- /O.CON.KPIH.WS.W.0011.000000T0000Z-251226T0000Z/ Sun Valley Region-Big Lost Highlands/Copper Basin- Including the cities of Ketchum, Copper Basin, Galena, and Sun Valley 400 AM MST Thu Dec 25 2025 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...Snow. Additional snow accumulations up to 4 inches, mostly at Galena Summit and into the higher elevation backcountry. * WHERE...Big Lost Highlands/Copper Basin and Sun Valley Region. * WHEN...Until 5 PM MST this afternoon. * IMPACTS...Plan on slippery road conditions. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. Call 5 1 1 or visit 511.idaho.gov for the latest road conditions. && $$ IDZ069-071-072-260000- /O.CON.KPIH.WW.Y.0022.000000T0000Z-251226T0000Z/ Lost River Range-Frank Church Wilderness-Sawtooth/Stanley Basin- Including the cities of Borah Peak, Clayton, and Stanley 400 AM MST Thu Dec 25 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...Snow. Additional snow accumulations 1 to 3 inches. * WHERE...Frank Church Wilderness, Lost River Range, and Sawtooth/Stanley Basin. * WHEN...Until 5 PM MST this afternoon. * IMPACTS...Plan on slippery road conditions. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. Call 5 1 1 or visit 511.idaho.gov for the latest road conditions. && $$ Visit weather.gov/pocatello for more information. KSmith Action: Cancelled Issued At: 2025-12-25 09:41:14 726 WWUS45 KPIH 251540 WSWPIH URGENT - WINTER WEATHER MESSAGE National Weather Service Pocatello ID 840 AM MST Thu Dec 25 2025 IDZ073-074-251645- /O.CAN.KPIH.WS.W.0011.000000T0000Z-251226T0000Z/ Sun Valley Region-Big Lost Highlands/Copper Basin- Including the cities of Copper Basin, Galena, Sun Valley, and Ketchum 840 AM MST Thu Dec 25 2025 ...WINTER STORM WARNING IS CANCELLED... Although snow showers are expected this afternoon, additional accumulations will have minimal travel impact. Therefore the Winter Storm Warning is cancelled. $$ IDZ069-071-072-251645- /O.CAN.KPIH.WW.Y.0022.000000T0000Z-251226T0000Z/ Lost River Range-Frank Church Wilderness-Sawtooth/Stanley Basin- Including the cities of Stanley, Clayton, and Borah Peak 840 AM MST Thu Dec 25 2025 ...WINTER WEATHER ADVISORY IS CANCELLED... Although snow showers are expected this afternoon, additional accumulations will have minimal travel impact. Therefore the Winter Storm Warning is cancelled. $$ Visit weather.gov/pocatello for more information. DMH | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||