Alerts from NWS Denver/Boulder CO (UNOFFICIAL)
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Alerts from NWS Denver/Boulder CO (UNOFFICIAL)
@bou.nws-bot.us
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Unofficial bot sharing alerts from NWS Denver/Boulder CO.

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Dense Fog Advisory issued December 3 at 9:22PM MST until December 4 at 10:00AM MST by NWS Denver CO
Additional Details Here.
* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...Eastern Larimer, Central Weld, and Morgan Counties, including Fort Collins, Greeley, and Fort Morgan. * WHEN...Until 10 AM MST Thursday. * IMPACTS...Low visibility will make driving conditions hazardous.
December 4, 2025 at 4:30 AM
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Winter Weather Advisory issued December 3 at 5:52PM MST until December 3 at 8:00PM MST by NWS Denver CO
Additional Details Here.
* WHAT...Snow. Additional snow accumulations up to one inch. * WHERE...South Park. * WHEN...Until 8 PM MST this evening. * IMPACTS...Travel will be hazardous with slippery road conditions.
December 4, 2025 at 1:00 AM
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The Winter Weather Advisory has been cancelled.
Additional Details Here.(2/2)
* WHAT...Snow. Additional snow accumulations up to two inches. Heaviest across the Palmer Divide * WHERE...Boulder and Denver metro areas, Castle Rock, and Palmer Divide. * WHEN...Until 6 PM MST this evening. * IMPACTS...Plan on slippery road conditions. The hazardous conditions will impact the Wednesday evening commute.
December 3, 2025 at 8:45 PM
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The Winter Weather Advisory has been cancelled.
Additional Details Here.
(1/2)
The Winter Weather Advisory has been cancelled and is no longer in effect. Snow has ended. Roads are mostly wet across the area. * WHAT...Snow. Additional snow accumulations up to two inches. * WHERE...The Southern Front Range Foothills. * WHEN...Until 6 PM MST this evening. * IMPACTS...Travel could be difficult. The hazardous conditions will impact the Wednesday evening commute. * WHAT...Snow. Additional snow accumulations up to 3 inches. * WHERE...South Park. * WHEN...Until 8 PM MST this evening. * IMPACTS...Travel will be hazardous with slippery road conditions.
December 3, 2025 at 8:45 PM
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Winter Weather Advisory issued December 3 at 5:02AM MST until December 3 at 6:00PM MST by NWS Denver CO
Additional Details Here.(2/2)
* WHAT...Snow. Additional snow accumulations between 1 and 4 inches, with storm totals ranging from 3 to 6 inches. The heavier totals will be west of I-25. Locally heavier amounts close to 8 inches will be possible at the base of the foothills. * WHERE...Boulder and Denver metro areas, Castle Rock, and Palmer Divide. * WHEN...Until 6 PM MST this evening. * IMPACTS...Plan on slippery road conditions and slow travel. The hazardous conditions will impact the Wednesday morning commute, with potential for slick roads to persist into the evening commute as well.
December 3, 2025 at 12:15 PM
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Winter Weather Advisory issued December 3 at 5:02AM MST until December 3 at 6:00PM MST by NWS Denver CO
Additional Details Here.
(1/2)
* WHAT...Snow. Additional snow accumulations between 2 and 4 inches, bringing storm totals to between 3 and 9 inches. The heaviest amounts will be in the Boulder County Foothills, with lighter amounts in northern Larimer County. * WHERE...The Northern Front Range Foothills. * WHEN...Until 6 PM MST this evening. * IMPACTS...Travel could be difficult. The hazardous conditions will impact the Wednesday morning commute. * WHAT...Snow. Additional snow accumulations between 3 and 8 inches, bringing storm totals into the 6 to 11 inch range. * WHERE...The Southern Front Range Foothills. * WHEN...Until 6 PM MST this evening. * IMPACTS...Travel could be difficult. The hazardous conditions will impact the Wednesday morning and afternoon commutes. * WHAT...Snow expected. Total snow accumulations between 3 and 8 inches. * WHERE...South Park. * WHEN...Until 8 PM MST this evening. * IMPACTS...Travel will be hazardous with slippery road conditions. * WHAT...Snow. Additional snow accumulations less than two inches, with storm totals mostly between 2 and 5 inches. * WHERE...Fort Collins and Loveland. * WHEN...Until 2 PM MST this afternoon. * IMPACTS...Plan on slippery road conditions and slow travel. The hazardous conditions will impact the Wednesday morning commute, with potential for slick roads to persist into the evening commute as well.
December 3, 2025 at 12:15 PM
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Winter Weather Advisory issued December 2 at 10:13PM MST until December 3 at 6:00PM MST by NWS Denver CO
Additional Details Here.(2/2)
* WHAT...Snow expected. Total snow accumulations between 3 and 6 inches. * WHERE...South Park. * WHEN...From 2 AM to 8 PM MST Wednesday. * IMPACTS...Travel will be hazardous with slippery road conditions.
December 3, 2025 at 5:15 AM
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Winter Weather Advisory issued December 2 at 10:13PM MST until December 3 at 6:00PM MST by NWS Denver CO
Additional Details Here.
(1/2)
* WHAT...Snow expected. Total snow accumulations between 3 and 8 inches, with the heaviest amounts in the Boulder County Foothills. * WHERE...The Northern Front Range Foothills. * WHEN...Until 6 PM MST Wednesday. * IMPACTS...Travel could be difficult. The hazardous conditions will impact the Wednesday morning commute. * WHAT...Snow expected. Total snow accumulations between 5 and 11 inches. * WHERE...The Southern Front Range Foothills. * WHEN...Until 6 PM MST Wednesday. * IMPACTS...Travel could be difficult. The hazardous conditions will impact the Wednesday morning and afternoon commutes. * WHAT...Snow expected. Total snow accumulations between 2 to 4 inches, especially across southeastern Larimer county. * WHERE...Fort Collins. * WHEN...Until 2 PM MST Wednesday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions will impact the Wednesday morning commute. * WHAT...Snow expected. Total snow accumulations between 3 and 6 inches, with locally up to 8 inches at the base of the foothills. * WHERE...Boulder and Denver metro areas, Castle Rock, and Palmer Divide. * WHEN...Until 6 PM MST Wednesday. * IMPACTS...Plan on slippery road conditions and slow travel. The hazardous conditions will impact the Wednesday morning commute, with potential for slick roads to persist into the evening commute as well.
December 3, 2025 at 5:15 AM
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Winter Weather Advisory issued December 2 at 2:37PM MST until December 3 at 2:00PM MST by NWS Denver CO
Additional Details Here.(2/2)
* WHAT...Snow expected. Total snow accumulations between 3 and 6 inches, with locally up to 8 inches at the base of the foothills. * WHERE...Boulder and Denver metro areas, Castle Rock, and Palmer Divide. * WHEN...From midnight tonight to 6 PM MST Wednesday. * IMPACTS...Plan on slippery road conditions and slow travel. The hazardous conditions will impact the Wednesday morning commute, with potential for slick roads to persist into the evening commute as well.
December 2, 2025 at 9:45 PM
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Winter Weather Advisory issued December 2 at 2:37PM MST until December 3 at 2:00PM MST by NWS Denver CO
Additional Details Here.
(1/2)
* WHAT...Snow expected. Total snow accumulations between 2 to 4 inches, especially across southeastern Larimer county. * WHERE...Fort Collins and Loveland. * WHEN...From midnight tonight to 2 PM MST Wednesday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions will impact the Wednesday morning commute. * WHAT...Snow expected. Total snow accumulations between 3 and 6 inches. * WHERE...South Park. * WHEN...From 2 AM to 8 PM MST Wednesday. * IMPACTS...Travel could be difficult, especially Wednesday morning. * WHAT...Snow expected. Total snow accumulations between 3 and 7 inches. * WHERE...The Northern Front Range Foothills. * WHEN...From midnight tonight to 6 PM MST Wednesday. * IMPACTS...Travel could be difficult. The hazardous conditions will impact the Wednesday morning commutes. * WHAT...Snow expected. Total snow accumulations between 4 and 9 inches, with locally higher totals possible. * WHERE...The Southern Front Range Foothills. * WHEN...From midnight tonight to 6 PM MST Wednesday. * IMPACTS...Travel could be difficult. The hazardous conditions will impact the Wednesday morning and afternoon commutes.
December 2, 2025 at 9:45 PM
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Winter Weather Advisory issued December 2 at 2:53AM MST until December 3 at 6:00PM MST by NWS Denver CO
Additional Details Here.
* WHAT...Snow expected. Total snow accumulations between 4 and 9 inches. * WHERE...The Southern Front Range Foothills. * WHEN...From midnight tonight to 6 PM MST Wednesday. * IMPACTS...Travel could be difficult. The hazardous conditions will impact the Wednesday morning and afternoon commutes. * WHAT...Snow expected. Total snow accumulations between 3 and 5 inches, with locally up to 6 inches at the base of the foothills. * WHERE...Boulder and Denver metro areas, Castle Rock, and Palmer Divide. * WHEN...From midnight tonight to 6 PM MST Wednesday. * IMPACTS...Plan on slippery road conditions and slow travel. The hazardous conditions will impact the Wednesday morning commute, with potential for slick roads to persist into the evening commute as well.
December 2, 2025 at 10:00 AM
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Winter Weather Advisory issued December 1 at 1:52PM MST until December 3 at 6:00PM MST by NWS Denver CO
Additional Details Here.
* WHAT...Snow expected. Total snow accumulations between 2 and 7 inches. Highest amounts expected in the southern foothills and Palmer Divide. * WHERE...The Southern Front Range Foothills, the Denver metro, and the Palmer Divide. * WHEN...From midnight Tuesday Night to 6 PM MST Wednesday. * IMPACTS...Travel could be very difficult. The hazardous conditions will impact the Wednesday morning commute, with potential for slick roads to persist into the evening commute as well.
December 1, 2025 at 9:00 PM
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Winter Weather Advisory issued December 1 at 4:43AM MST until December 1 at 5:00AM MST by NWS Denver CO
Additional Details Here.
Snow had diminished to flurries early this morning. While the snow had mostly ended, travelers should still be prepared for slick and snowpacked roads over the Colorado high country. Chain and traction laws remain in effect for some corridors. Check the latest conditions and traction laws at www.cotrip.org.
December 1, 2025 at 11:45 AM
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Winter Weather Advisory issued November 30 at 1:42PM MST until December 1 at 5:00AM MST by NWS Denver CO
Additional Details Here.
* WHAT...Snow expected. Total snow accumulations between 3 and 8 inches. Winds gusting as high as 35 mph. * WHERE...Rabbit Ears Pass, Rocky Mountain National Park, the Medicine Bow Range, the mountains of Summit County, the Mosquito Range, and the Indian Peaks. * WHEN...From 11 AM this morning to 5 AM MST Monday, with the heaviest snow falling this afternoon and evening. * IMPACTS...Snow covered roads will make travel hazardous, especially Sunday evening into Sunday night.
November 30, 2025 at 8:45 PM
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Winter Weather Advisory issued November 30 at 3:42AM MST until December 1 at 5:00AM MST by NWS Denver CO
Additional Details Here.
* WHAT...Snow expected. Total snow accumulations between 3 and 8 inches. Winds gusting as high as 35 mph. * WHERE...Rabbit Ears Pass, Rocky Mountain National Park, the Medicine Bow Range, the mountains of Summit County, the Mosquito Range, and the Indian Peaks. * WHEN...From 11 AM this morning to 5 AM MST Monday, with the heaviest snow falling this afternoon and evening. * IMPACTS...Snow covered roads will make travel hazardous.
November 30, 2025 at 10:45 AM
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Winter Weather Advisory issued November 29 at 9:28PM MST until December 1 at 5:00AM MST by NWS Denver CO
Additional Details Here.
* WHAT...Snow expected. Total snow accumulations between 4 and 9 inches. * WHERE...Rabbit Ears Pass, Rocky Mountain National Park, the Medicine Bow Range, The Mountains of Summit County, the Mosquito Range, and the Indian Peaks. * WHEN...From 11 AM Sunday to 5 AM MST Monday. * IMPACTS...Snow covered roads will make travel hazardous, especially Sunday evening into Sunday night.
November 30, 2025 at 4:30 AM
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Winter Weather Advisory issued November 29 at 2:03PM MST until December 1 at 5:00AM MST by NWS Denver CO
Additional Details Here.
* WHAT...Snow expected. Total snow accumulations between 4 and 9 inches. * WHERE...Rabbit Ears Pass, Rocky Mountain National Park and the Medicine Bow Range, and The Mountains of Summit County, the Mosquito Range, and the Indian Peaks. * WHEN...From 11 AM Sunday to 5 AM MST Monday. * IMPACTS...Snow covered roads will make travel hazardous, especially Sunday evening into Sunday night.
November 29, 2025 at 9:15 PM
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Winter Weather Advisory issued November 29 at 9:38AM MST until November 29 at 10:00AM MST by NWS Denver CO
Additional Details Here.
Snow has ended across the area, but roads remain slick and snow covered and spots. The latest road conditions for Colorado can be obtained by calling 5 1 1 or by going to www.cotrip.org.
November 29, 2025 at 4:45 PM
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Winter Weather Advisory issued November 29 at 7:43AM MST until November 29 at 8:00AM MST by NWS Denver CO
Additional Details Here.
Snow has ended across the area, but roads remain slick and snow covered and spots. The latest road conditions for Colorado can be obtained by calling 5 1 1 or by going to www.cotrip.org. * WHAT...Snow. Additional snow accumulations up to one inch. Winds gusting as high as 45 mph. * WHERE...The Mountains of Summit County, the Mosquito Range, and the Indian Peaks. * WHEN...Until 10 AM MST this morning. * IMPACTS...Travel will be slick and hazardous through most of this morning. Conditions will improve late this morning into the early afternoon.
November 29, 2025 at 2:45 PM
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Winter Weather Advisory issued November 29 at 3:05AM MST until November 29 at 8:00AM MST by NWS Denver CO
Additional Details Here.
* WHAT...Snow and areas of blowing snow. Additional snow accumulations up to two inches. Winds gusting as high as 45 mph. * WHERE...Rabbit Ears Pass, Rocky Mountain National Park and the Medicine Bow Range, and The Mountains of Summit County, the Mosquito Range, and the Indian Peaks. * WHEN...Until 8 AM MST this morning. Snow intensity and coverage will wind down early this morning, and then end in almost all areas by late morning. * IMPACTS...Travel will be slick and hazardous early this morning. Conditions will improve mid to late morning.
November 29, 2025 at 10:15 AM
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Winter Weather Advisory issued November 28 at 8:51PM MST until November 29 at 8:00AM MST by NWS Denver CO
Additional Details Here.
* WHAT...Snow and areas of blowing snow expected. Total snow accumulations 3 to 7 inches, with locally heavier amounts in the Park and Medicine Bow Ranges. Winds gusting as high as 45 mph. * WHERE...Rabbit Ears Pass, Rocky Mountain National Park and the Medicine Bow Range, and The Mountains of Summit County, the Mosquito Range, and the Indian Peaks. * WHEN...Until 8 AM MST Saturday. * IMPACTS...Travel will become slick and hazardous tonight. Conditions will improve again by mid to late morning Saturday.
November 29, 2025 at 4:00 AM
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Winter Weather Advisory issued November 28 at 1:48PM MST until November 29 at 8:00AM MST by NWS Denver CO
Additional Details Here.
* WHAT...Snow and areas of blowing snow expected. Total snow accumulations 3 to 7 inches, with locally heavier amounts in the Park and Medicine Bow Ranges. Winds gusting as high as 45 mph. * WHERE...Rabbit Ears Pass, Rocky Mountain National Park and the Medicine Bow Range, and The Mountains of Summit County, the Mosquito Range, and the Indian Peaks. * WHEN...From 5 PM this afternoon to 8 AM MST Saturday. The heaviest snow will fall late this evening into the overnight hours, and then decrease quickly Saturday morning. * IMPACTS...Travel will become slick and hazardous by this evening. Conditions will improve again by mid to late morning Saturday.
November 28, 2025 at 9:00 PM
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Winter Weather Advisory issued November 28 at 2:29AM MST until November 29 at 8:00AM MST by NWS Denver CO
Additional Details Here.
* WHAT...Snow and areas of blowing snow expected. Total snow accumulations 3 to 9 inches, with locally heavier amounts in the northern Gore and Park Ranges. Winds gusting as high as 45 mph. * WHERE...Rabbit Ears Pass, Rocky Mountain National Park and the Medicine Bow Range, and The Mountains of Summit County, the Mosquito Range, and the Indian Peaks. * WHEN...From 5 PM this afternoon to 8 AM MST Saturday. The heaviest snow will fall this evening into the overnight hours, and then decrease quickly Saturday morning. * IMPACTS...Travel will become slick and hazardous by this evening. Conditions will improve again by mid to late morning Saturday.
November 28, 2025 at 9:45 AM
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Dense Fog Advisory issued November 22 at 4:46AM MST until November 22 at 10:00AM MST by NWS Denver CO
Additional Details Here.
* WHAT...Visibility less than one mile in dense fog. * WHERE...Greeley, and Fort Morgan. Fog has been reported across portions of I-25, US-85, and I-76. * WHEN...Until 10 AM MST this morning. * IMPACTS...Low visibility could make driving conditions hazardous.
November 22, 2025 at 12:00 PM
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Winter Weather Advisory issued November 17 at 3:36AM MST until November 17 at 5:00PM MST by NWS Denver CO
Additional Details Here.
* WHAT...Snow. Additional snow accumulations of 3 to 6 inches, with higher totals possible north of Rabbit Ears Pass. Winds gusting as high as 50 mph. * WHERE...Rabbit Ears Pass. * WHEN...Until 5 PM MST this afternoon. * IMPACTS...Snow covered roads will make travel hazardous, especially through mountain passes. Use caution when traveling.
November 17, 2025 at 10:45 AM