IEM VTEC Product Browser
This application allows easy navigation of National Weather Service issued products with Valid Time Event Coding (VTEC).
13 Nov 2024 Update: The tool was updated to use non-hash link style URLs. A shim is in place to translate the old URLs to the new ones, so nothing should be broken (famous last words). This was done to allow the HTML5 History API to provide a better user experience.
Tab Functionality:
Above this section, you will notice six selectable tabs. Click on
the tab to show the information.
- Help: This page!
- Event Info: Details of the selected event.
- Text Data: The raw text product for this event.
- Interactive Map: An interactive map showing the event and RADAR.
- Storm Reports: Local Storm Reports.
- List Events: List all events of the given phenomena, significance, year, and issuing office.
Web Services Used:
This application is fully driven by IEM web services.
2025 [KMSO] MISSOULA Winter Storm (WS) Warning (W) Number 6
Listing of Counties/Parishes/Zones Included in Product
RADAR Composite at Issuance Time
Storm Based Warning History
025 WWUS45 KMSO 210859 WSWMSO URGENT - WINTER WEATHER MESSAGE National Weather Service Missoula MT 259 AM MDT Fri Mar 21 2025 MTZ004-220900- /O.UPG.KMSO.WW.Y.0024.250322T0000Z-250322T1800Z/ /O.NEW.KMSO.WS.W.0006.250322T0000Z-250322T1800Z/ Lower Clark Fork Region- 259 AM MDT Fri Mar 21 2025 ...WINTER STORM WARNING IN EFFECT FROM 6 PM THIS EVENING TO NOON MDT SATURDAY ABOVE 4000 FEET... * WHAT...Heavy snow expected above 4000 feet. Likelihood of major impacts from snow is up to 80 percent. Total snow accumulations between 8 and 12 inches. Winds gusting as high as 40 mph. * WHERE...I-90 Lookout Pass to Haugan. * WHEN...From 6 PM this evening to noon MDT Saturday. * IMPACTS...Winter traveling conditions. For MAJOR impacts from snow, expect considerable disruptions to normal activities. Dangerous or impossible traveling conditions. Avoid travel in the impacted areas if possible. Widespread closures and disruptions to infrastructure may occur. * ADDITIONAL DETAILS...A burst of intense snowfall rates and strong winds will accompany a cold frontal passage Friday evening. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ IDZ005-006-010-MTZ002-006-220900- /O.CON.KMSO.WW.Y.0024.250322T0000Z-250322T1800Z/ Northern Clearwater Mountains-Southern Clearwater Mountains- Eastern Lemhi County-West Glacier Region-Bitterroot/Sapphire Mountains- 259 AM MDT Fri Mar 21 2025 /159 AM PDT Fri Mar 21 2025/ ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 6 PM MDT /5 PM PDT/ THIS EVENING TO NOON MDT /11 AM PDT/ SATURDAY... * WHAT...Snow expected. Likelihood of moderate impacts from snow is greater than 80 percent. Total snow accumulations between 6 and 12 inches above 4000 feet. Winds gusting as high as 35 mph. Below 4000 feet, a trace to 1 inch of snow will be possible, especially on un-paved surfaces. * WHERE...In IDAHO, Eastern Lemhi County, Northern Clearwater Mountains, and Southern Clearwater Mountains. In MONTANA, West Glacier Region and Bitterroot/Sapphire Mountains. * WHEN...From 6 PM MDT /5 PM PDT/ this evening to noon MDT /11 AM PDT/ Saturday. * IMPACTS...For MODERATE impacts from snow, expect disruptions to normal activities. Hazardous traveling conditions. Use extra caution while driving. Closures and disruptions to infrastructure may occur. * ADDITIONAL DETAILS...A burst of intense snowfall rates and strong winds will accompany a cold frontal passage across Marias Passes as early as Friday evening before reaching Lost Trail early Saturday morning. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ007-220900- /O.CON.KMSO.WW.Y.0024.250322T0600Z-250322T1800Z/ Butte/Blackfoot Region- 259 AM MDT Fri Mar 21 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO NOON MDT SATURDAY... * WHAT...Snow expected. Likelihood of minor to moderate impacts from around 1 to 3 inches of snow is 80 percent. Winds gusting as high as 50 mph. * WHERE...Butte, Homestake Pass, MacDonald Pass, Highway 12 Garrison to Elliston, and Georgetown Lake. * WHEN...From midnight tonight to noon MDT Saturday. * IMPACTS...For MINOR impacts from snow, expect a few inconveniences to normal activities. Use caution while driving. Winter traveling conditions. Gusty winds could bring down tree branches. * ADDITIONAL DETAILS...A burst of intense snowfall rates and strong winds will accompany a cold frontal passage early Saturday morning. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ043-220900- /O.CON.KMSO.WW.Y.0024.250322T0600Z-250322T1800Z/ Potomac/Seeley Lake Region- 259 AM MDT Fri Mar 21 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO NOON MDT SATURDAY... * WHAT...Snow expected. Likelihood of minor to moderate impacts from around 1 to 3 inches of snow is 90 percent, and 3 to 6 inches of snow is 40 percent. Winds gusting as high as 40 mph. * WHERE...I-90 East Missoula to Bearmouth, Highway 83 Seeley Lake to Condon, and Highway 200 Bonner to Greenough. * WHEN...From midnight tonight to noon MDT Saturday. * IMPACTS...For MODERATE impacts from snow, expect disruptions to normal activities. Hazardous traveling conditions. Use extra caution while driving. Closures and disruptions to infrastructure may occur. * ADDITIONAL DETAILS...A burst of intense snowfall rates and strong winds will accompany a cold frontal passage early Saturday morning. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$
Permalink to 202503210859-KMSO-WWUS45-WSWMSO
025 WWUS45 KMSO 210859 WSWMSO URGENT - WINTER WEATHER MESSAGE National Weather Service Missoula MT 259 AM MDT Fri Mar 21 2025 MTZ004-220900- /O.UPG.KMSO.WW.Y.0024.250322T0000Z-250322T1800Z/ /O.NEW.KMSO.WS.W.0006.250322T0000Z-250322T1800Z/ Lower Clark Fork Region- 259 AM MDT Fri Mar 21 2025 ...WINTER STORM WARNING IN EFFECT FROM 6 PM THIS EVENING TO NOON MDT SATURDAY ABOVE 4000 FEET... * WHAT...Heavy snow expected above 4000 feet. Likelihood of major impacts from snow is up to 80 percent. Total snow accumulations between 8 and 12 inches. Winds gusting as high as 40 mph. * WHERE...I-90 Lookout Pass to Haugan. * WHEN...From 6 PM this evening to noon MDT Saturday. * IMPACTS...Winter traveling conditions. For MAJOR impacts from snow, expect considerable disruptions to normal activities. Dangerous or impossible traveling conditions. Avoid travel in the impacted areas if possible. Widespread closures and disruptions to infrastructure may occur. * ADDITIONAL DETAILS...A burst of intense snowfall rates and strong winds will accompany a cold frontal passage Friday evening. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ IDZ005-006-010-MTZ002-006-220900- /O.CON.KMSO.WW.Y.0024.250322T0000Z-250322T1800Z/ Northern Clearwater Mountains-Southern Clearwater Mountains- Eastern Lemhi County-West Glacier Region-Bitterroot/Sapphire Mountains- 259 AM MDT Fri Mar 21 2025 /159 AM PDT Fri Mar 21 2025/ ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 6 PM MDT /5 PM PDT/ THIS EVENING TO NOON MDT /11 AM PDT/ SATURDAY... * WHAT...Snow expected. Likelihood of moderate impacts from snow is greater than 80 percent. Total snow accumulations between 6 and 12 inches above 4000 feet. Winds gusting as high as 35 mph. Below 4000 feet, a trace to 1 inch of snow will be possible, especially on un-paved surfaces. * WHERE...In IDAHO, Eastern Lemhi County, Northern Clearwater Mountains, and Southern Clearwater Mountains. In MONTANA, West Glacier Region and Bitterroot/Sapphire Mountains. * WHEN...From 6 PM MDT /5 PM PDT/ this evening to noon MDT /11 AM PDT/ Saturday. * IMPACTS...For MODERATE impacts from snow, expect disruptions to normal activities. Hazardous traveling conditions. Use extra caution while driving. Closures and disruptions to infrastructure may occur. * ADDITIONAL DETAILS...A burst of intense snowfall rates and strong winds will accompany a cold frontal passage across Marias Passes as early as Friday evening before reaching Lost Trail early Saturday morning. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ007-220900- /O.CON.KMSO.WW.Y.0024.250322T0600Z-250322T1800Z/ Butte/Blackfoot Region- 259 AM MDT Fri Mar 21 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO NOON MDT SATURDAY... * WHAT...Snow expected. Likelihood of minor to moderate impacts from around 1 to 3 inches of snow is 80 percent. Winds gusting as high as 50 mph. * WHERE...Butte, Homestake Pass, MacDonald Pass, Highway 12 Garrison to Elliston, and Georgetown Lake. * WHEN...From midnight tonight to noon MDT Saturday. * IMPACTS...For MINOR impacts from snow, expect a few inconveniences to normal activities. Use caution while driving. Winter traveling conditions. Gusty winds could bring down tree branches. * ADDITIONAL DETAILS...A burst of intense snowfall rates and strong winds will accompany a cold frontal passage early Saturday morning. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ043-220900- /O.CON.KMSO.WW.Y.0024.250322T0600Z-250322T1800Z/ Potomac/Seeley Lake Region- 259 AM MDT Fri Mar 21 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO NOON MDT SATURDAY... * WHAT...Snow expected. Likelihood of minor to moderate impacts from around 1 to 3 inches of snow is 90 percent, and 3 to 6 inches of snow is 40 percent. Winds gusting as high as 40 mph. * WHERE...I-90 East Missoula to Bearmouth, Highway 83 Seeley Lake to Condon, and Highway 200 Bonner to Greenough. * WHEN...From midnight tonight to noon MDT Saturday. * IMPACTS...For MODERATE impacts from snow, expect disruptions to normal activities. Hazardous traveling conditions. Use extra caution while driving. Closures and disruptions to infrastructure may occur. * ADDITIONAL DETAILS...A burst of intense snowfall rates and strong winds will accompany a cold frontal passage early Saturday morning. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$
All Storm Reports within Event Political Coverage
Storm Reports within Product Polygon
This table lists other events issued by the selected office for the selected year. Click on the row to select that event.