Key facts
- Alert
- Winter Storm Warning (severe)
- Issued by
- National Weather Service offices: Pueblo CO, Grand Junction CO
- Areas
- Eastern San Juan Mountains Above 10000 Ft; Northwestern San Juan Mountains; Southwest San Juan Mountains
- In effect
- until 11:00 AM MST, Nov 2, 2026
What the National Weather Service says
“Travel could be very difficult to impossible.”
National Weather Service offices: Pueblo CO, Grand Junction CO, Winter Storm Warning, 11:03 AM MDT Oct 31, 2026 · official alert
“Slow down and use caution while traveling.”
National Weather Service offices: Pueblo CO, Grand Junction CO, Winter Storm Warning, 11:03 AM MDT Oct 31, 2026 · official alert
What to do
Avoid travel in the warned area if you can. The National Weather Service says travel could be very difficult to impossible, and the Monday morning commute will be affected.
If you must drive, slow down and use caution. Carry a winter kit with you. For current road conditions, call 5 1 1.
Protect pipes, plants and pets from the cold, and check on older neighbors.
Context
FEMA flood-insurance claims data lists past claims in some of the counties covered by this alert: 42 claims from 1979 to 2019 in one county, 1 claim in 1999 in another, and 6 claims from 1984 to 2021 in a third. These counts cover only insured homes and businesses with flood-insurance claims, so they do not describe snow or winter storms.
Updates
- The National Weather Service updated the winter storm warning; it remains in effect until 11:00 AM MST.
- NWS Grand Junction CO issued the winter storm warning until 12:00 PM MST.
History here
This county: 42 flood insurance claims in FEMA's National Flood Insurance Program records since 1979, most recent 2019.
This county: 1 flood insurance claim in FEMA's National Flood Insurance Program records since 1999, most recent 1999.
This county: 6 flood insurance claims in FEMA's National Flood Insurance Program records since 1984, most recent 2021.
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Questions
- Is there a Winter Storm Warning in the San Juan Mountains?
- Yes. The National Weather Service in Grand Junction issued a Winter Storm Warning for the Northwestern and Southwest San Juan Mountains above 10,000 feet. It is in effect from 6 AM Sunday to 12:00 PM MST Monday.
- How much snow is expected in the San Juan Mountains?
- The National Weather Service expects total snow accumulations between 12 and 18 inches above 10,000 feet, with locally higher amounts possible. Winds could gust as high as 45 mph.
- When does the San Juan Mountains Winter Storm Warning end?
- The warning is set to expire at 12:00 PM MST on Monday, November 2, 2026. It was issued at 9:37 AM MST on Saturday, October 31.
Sources
- National Weather Service offices: Pueblo CO, Grand Junction CO: Winter Storm Warning, Oct 31, 2026 weather.gov
- FEMA OpenFEMA: NFIP claims and disaster declarations fema.gov
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