Flooding Rain, Heavy Snow and Winds Slam Northwest, North-Central U.S.
The atmospheric river this week will keep buffeting the Pacific Northwest with heavy rain, snow, and high winds.
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Weather Alerts For Louisville, CO
Fire Weather Watch
-URGENT - FIRE WEATHER MESSAGE National Weather Service Denver/Boulder CO 555 PM MST Wed Dec 17 2025 Larimer County Below 6000 Feet/Northwest Weld County- Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County- North Douglas County Below 6000 Feet/Denver/West Adams and Arapahoe Counties/East Broomfield County- 555 PM MST Wed Dec 17 2025 ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM FRIDAY MORNING THROUGH FRIDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE I-25 CORRIDOR... ...RED FLAG WARNING TODAY HAS EXPIRED... * AFFECTED AREA...Fire Weather Zones 238, 239 and 240. * TIMING...From Friday morning through Friday evening. * WINDS...West 20 to 30 mph with gusts up to 60 mph west of I-25. * RELATIVE HUMIDITY...As low as 13 percent. * IMPACTS...Conditions will be favorable for rapid fire spread. Avoid outdoor burning and any activity that may produce a spark and start a wildfire. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings. &&
High Wind Warning
-URGENT - WEATHER MESSAGE National Weather Service Denver CO 226 PM MST Wed Dec 17 2025 Larimer County Below 6000 Feet/Northwest Weld County-Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County- Including the cities of Golden, Arvada, Fort Collins, Lakewood, Loveland, Longmont, Hereford, Nunn, and Boulder 226 PM MST Wed Dec 17 2025 ...HIGH WIND WATCH IN EFFECT FROM FRIDAY MORNING THROUGH FRIDAY AFTERNOON... ...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 7 PM MST THIS EVENING... * WHAT...For the High Wind Warning, west winds 30 to 50 mph with gusts 65 to 85 mph expected. For the High Wind Watch, west winds up to 50 mph with gusts up to 80 mph possible. * WHERE...Fort Collins, Longmont, Boulder, and the western suburbs of Denver. * WHEN...For the High Wind Warning, until 7 PM MST this evening. For the High Wind Watch, from Friday morning through Friday afternoon. * IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult, especially for high profile vehicles. Strong winds will likely lead to rapid fire growth of any new fire. Damaging winds could blow down trees and power lines. Widespread power outages are possible. Travel could be difficult, especially for high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... People are urged to secure loose objects that could be blown around or damaged by the wind. Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution. Avoid outdoor burning or any activity that may cause sparks. The strong winds will likely fuel rapid fire growth. Monitor the latest forecasts and warnings for updates. &&
High Wind Watch
-URGENT - WEATHER MESSAGE National Weather Service Denver CO 226 PM MST Wed Dec 17 2025 Larimer County Below 6000 Feet/Northwest Weld County-Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County- Including the cities of Golden, Arvada, Fort Collins, Lakewood, Loveland, Longmont, Hereford, Nunn, and Boulder 226 PM MST Wed Dec 17 2025 ...HIGH WIND WATCH IN EFFECT FROM FRIDAY MORNING THROUGH FRIDAY AFTERNOON... ...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 7 PM MST THIS EVENING... * WHAT...For the High Wind Warning, west winds 30 to 50 mph with gusts 65 to 85 mph expected. For the High Wind Watch, west winds up to 50 mph with gusts up to 80 mph possible. * WHERE...Fort Collins, Longmont, Boulder, and the western suburbs of Denver. * WHEN...For the High Wind Warning, until 7 PM MST this evening. For the High Wind Watch, from Friday morning through Friday afternoon. * IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult, especially for high profile vehicles. Strong winds will likely lead to rapid fire growth of any new fire. Damaging winds could blow down trees and power lines. Widespread power outages are possible. Travel could be difficult, especially for high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... People are urged to secure loose objects that could be blown around or damaged by the wind. Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution. Avoid outdoor burning or any activity that may cause sparks. The strong winds will likely fuel rapid fire growth. Monitor the latest forecasts and warnings for updates. &&
