Weather Warnings for Idaho

Issued by the National Weather Service

Current watches, warnings, and advisories for Idaho
Alerts Updated: December 19, 2025, 1:35 pm  UTC


Avalanche Warning issued December 19 at 6:34AM MST by NWS Pocatello ID

Summary: AVWPIH * WHAT...Avalanche warning. The avalanche danger is HIGH. Heavy snowfall and wind driven snow are overloading a weak snowpack. * WHERE...The Sawtooths, White Clouds, Smokys, Boulders, and Pioneers, including the mountains near Stanley, Smiley Creek, Galena Summit, and Trail Creek Summit. * WHEN...7 AM MST Friday until 3 AM MST Saturday. * IMPACTS...Natural and human triggered avalanches large enough to bury people, snap trees, or destroy structures are very likely to occur. Avalanches may strike roadways, trails, and buildings in valley bottoms.
Severity:  Unknown    Effective:  December 19, 2025, 6:34 am      Expires:  December 20, 2025, 3:00 am
Area:  Sawtooth/Stanley Basin; Sun Valley Region; Big Lost Highlands/Copper Basin


Wind Advisory issued December 19 at 5:56AM MST until December 19 at 8:00PM MST by NWS Pocatello ID

Summary: * WHAT...Southwest winds 30 to 40 mph with gusts up to 55 mph expected. * WHERE...Arco/Mud Lake Desert, Lower Snake River Plain, and Upper Snake River Plain. * WHEN...Until 8 PM MST this evening. * IMPACTS...Gusty winds could make driving difficult, especially for high profile vehicles. Unsecured objects may be blown around.
Severity:  Moderate    Effective:  December 19, 2025, 5:56 am      Expires:  December 19, 2025, 8:00 pm
Area:  Arco/Mud Lake Desert; Upper Snake River Plain; Lower Snake River Plain


Winter Weather Advisory issued December 19 at 5:55AM MST until December 20 at 5:00AM MST by NWS Pocatello ID

Summary: * WHAT...Snow. Additional snow accumulations up to 7 inches. Winds gusting as high as 55 mph. * WHERE...Big Hole Mountains, Centennial Mountains - Island Park, Bear River Range, and Caribou Range. * WHEN...Until 5 AM MST Saturday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Friday morning and evening commutes. Strong winds could cause tree damage.
Severity:  Moderate    Effective:  December 19, 2025, 5:55 am      Expires:  December 19, 2025, 3:00 pm
Area:  Bear River Range; Caribou Range; Big Hole Mountains; Centennial Mountains/Island Park


Winter Storm Warning issued December 19 at 5:55AM MST until December 20 at 5:00AM MST by NWS Pocatello ID

Summary: * WHAT...Heavy snow. Additional snow accumulations between 6 and 12 inches. Winds gusting as high as 55 mph. * WHERE...Big Lost Highlands/Copper Basin, Frank Church Wilderness, Sawtooth/Stanley Basin, and Sun Valley Region. * WHEN...Until 5 AM MST Saturday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Friday morning and evening commutes. Strong winds could cause tree damage.
Severity:  Severe    Effective:  December 19, 2025, 5:55 am      Expires:  December 19, 2025, 3:00 pm
Area:  Frank Church Wilderness; Sawtooth/Stanley Basin; Sun Valley Region; Big Lost Highlands/Copper Basin


Wind Advisory issued December 19 at 5:02AM MST until December 19 at 5:00PM MST by NWS Boise ID

Summary: * WHAT...Southwest winds 25 to 35 mph with gusts up to 55 mph expected. * WHERE...Portions of south central and southwest Idaho and southeast Oregon. * WHEN...Until 5 PM MST /4 PM PST/ this afternoon. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.
Severity:  Moderate    Effective:  December 19, 2025, 5:02 am      Expires:  December 19, 2025, 5:00 pm
Area:  Southwest Highlands; Owyhee Mountains; Southern Twin Falls County; Harney County; Malheur County


Flood Warning issued December 19 at 2:13AM PST until December 19 at 12:07PM PST by NWS Spokane WA

Summary: ...The Flood Warning continues for the following rivers in Idaho... Washington... Paradise Creek at Moscow affecting Whitman and Latah Counties. For the Paradise Creek ...including Moscow...Minor flooding is forecast. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Paradise Creek at Moscow. * WHEN...From early this morning to this afternoon. * IMPACTS...At 9.2 feet, Water will be out of the creek at the intersection of Bridge Street and Hillcrest Drive and may also be flowing into the intersection at this stage. Flooding near Damen Street. * ADDITIONAL DETAILS... - At 1:45 AM PST Friday the stage was 9.2 feet. - Bankfull stage is 8.0 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 1:45 AM PST Friday was 9.2 feet. - Forecast...The creek is expected to crest between 9.3 and 9.4 feet early this morning before receding by mid morning and continue to fall through the rest of the day. - Flood stage is 9.2 feet. - http://www.weather.gov/safety/flood
Severity:  Severe    Effective:  December 19, 2025, 2:13 am      Expires:  December 19, 2025, 12:15 pm
Area:  Latah, ID; Whitman, WA


Winter Weather Advisory issued December 18 at 3:56PM PST until December 19 at 10:00AM PST by NWS Spokane WA

Summary: * WHAT...Snow expected above 3000 feet. Total snow accumulations between 4 and 9 inches. Winds gusting up to 30 mph. * WHERE...Lookout Pass, Mullan, and Dobson Pass. * WHEN...Until 10 AM PST Friday. * IMPACTS...Winter travel conditions expected.
Severity:  Moderate    Effective:  December 18, 2025, 3:56 pm      Expires:  December 19, 2025, 6:00 am
Area:  Central Panhandle Mountains


Winter Weather Advisory issued December 18 at 2:34AM MST until December 19 at 5:00PM MST by NWS Missoula MT

Summary: ...ATMOSPHERIC RIVER TO BRING SIGNIFICANT MOUNTAIN SNOW... .A plume of subtropical moisture associated with an atmospheric river will bring significant mountain snow Thursday into Friday. Snow levels will rise above 5,000 feet Thursday night before quickly dropping Friday morning as strong cold front passes. The heaviest snow accumulations will impact higher elevations above 6,000 feet, especially across the Clearwater and Bitterroot Mountains. * WHAT...Snow expected above 6500 feet. There is a likelihood of moderate winter weather impacts. Total snow accumulations between 4 and 7 inches across Gilmore Summit with 12 to 24 inches over mountain areas including Lost Trail Pass. Winds gusting as high as 45 mph. * WHERE...Lemhi Pass, Highway 93 Lost Trail Pass to Gibbonsville, Highway 28 Tendoy to Lone Pine, and Bannock Pass. * WHEN...From 1 PM this afternoon to 5 PM MST 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 may occur. The hazardous conditions could impact the Thursday evening and Friday morning commutes, especially over higher passes.
Severity:  Moderate    Effective:  December 18, 2025, 2:34 am      Expires:  December 19, 2025, 2:45 am
Area:  Eastern Lemhi County


Winter Weather Advisory issued December 18 at 2:34AM MST until December 19 at 5:00PM MST by NWS Missoula MT

Summary: ...ATMOSPHERIC RIVER TO BRING SIGNIFICANT MOUNTAIN SNOW... .A plume of subtropical moisture associated with an atmospheric river will bring significant mountain snow Thursday into Friday. Snow levels will rise above 5,000 feet Thursday night before quickly dropping Friday morning as strong cold front passes. The heaviest snow accumulations will impact higher elevations above 6,000 feet, especially across the Clearwater and Bitterroot Mountains. * WHAT...Snow expected above 6500 feet. There is a likelihood of moderate to isolated major winter weather impacts. Total snow accumulations between 10 and 20 inches. Winds gusting as high as 55 mph. * WHERE...Williams Creek Summit. * WHEN...From 1 PM this afternoon to 5 PM MST 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 may occur.
Severity:  Moderate    Effective:  December 18, 2025, 2:34 am      Expires:  December 19, 2025, 2:45 am
Area:  Western Lemhi County


Winter Weather Advisory issued December 18 at 2:34AM MST until December 20 at 11:00AM MST by NWS Missoula MT

Summary: ...ATMOSPHERIC RIVER TO BRING SIGNIFICANT MOUNTAIN SNOW... .A plume of subtropical moisture associated with an atmospheric river will bring significant mountain snow Thursday into Friday. Snow levels will rise above 5,000 feet Thursday night before quickly dropping Friday morning as strong cold front passes. The heaviest snow accumulations will impact higher elevations above 6,000 feet, especially across the Clearwater and Bitterroot Mountains. * WHAT...Snow expected. There is a likelihood of moderate to isolated major winter weather impacts. Total snow accumulations of 8 to 14 inches in the higher elevations, including Lolo Pass. Total accumulations of 3 to 7 inches across lower elevations. Winds gusting as high as 40 mph. * WHERE...Dixie, Elk City, and Highway 12 Lowell to Lolo Pass. * WHEN...From noon today to 10 AM PST Saturday. * IMPACTS...For MODERATE winter weather impacts, expect disruptions to normal activities. Hazardous traveling conditions. Use extra caution while driving. * ADDITIONAL DETAILS...Snow levels will briefly rise above 5,000 feet Thursday night before dropping below 3,000 feet Friday morning as a cold front passes.
Severity:  Moderate    Effective:  December 18, 2025, 2:34 am      Expires:  December 19, 2025, 2:45 am
Area:  Southern Clearwater Mountains


The Winter Storm Watch has been replaced. Please see the latest information from NWS Missoula MT on this developing situation.

Summary: The Winter Storm Watch has been replaced. Please see the latest information from NWS Missoula MT on this developing situation.
Severity:  Severe    Effective:  December 17, 2025, 12:43 pm      Expires:  December 17, 2025, 12:59 pm
Area:  Southern Clearwater Mountains; Bitterroot/Sapphire Mountains