1 advisory is in effect for San Juan County, CO. The most serious is a winter weather advisory.
Since 2016 the National Weather Service has issued about 551 alerts that included San Juan County, roughly 55 a year. The most common is the winter weather advisory (206 from 2016 to 2025). No tornado warnings were recorded here in that period.
Updated from the National Weather Service · lists refresh hourly; the live map loads current alerts directly from the NWS
WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 PM MST THIS EVENING ABOVE 9000 FEET
* WHAT...Snow above 9000 feet. Additional snow accumulations up to 4 inches. * WHERE...Southwest San Juan Mountains. * WHEN...Until 9 PM MST this evening. * IMPACTS...Travel could be very difficult.
What to do: 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.
| Issued | Alert | Area |
|---|---|---|
| Nov 14, 12:32 PM EST | Winter Weather Advisory | Southwest San Juan Mountains |
Alert events that included San Juan County or its forecast zones, from the NWS warning archive.
| Alert type | 2016–2025 | 2026 | Last issued |
|---|---|---|---|
| Winter Weather Advisory | 206 | 9 | November 14, 2026 |
| Winter Storm Warning | 86 | 3 | November 1, 2026 |
| Winter Storm Watch | 73 | 1 | November 1, 2026 |
| Flood Watch | 55 | 11 | November 1, 2026 |
| Red Flag Warning | 52 | 16 | July 3, 2026 |
| Fire Weather Watch | 41 | 9 | July 2, 2026 |
| Wind Advisory | 11 | 0 | April 5, 2024 |
| Flood Advisory | 8 | 1 | July 27, 2026 |
| Severe Thunderstorm Warning | 5 | 0 | September 12, 2025 |
| Flash Flood Warning | 4 | 1 | July 29, 2026 |
| Dense Fog Advisory | 2 | 0 | October 3, 2017 |
| Severe Thunderstorm Watch | 2 | 1 | October 22, 2026 |
| Flood Warning | 2 | 1 | October 22, 2026 |
| High Wind Warning | 1 | 0 | February 18, 2016 |
| High Wind Watch | 1 | 0 | April 5, 2024 |
| Extreme Cold Watch | 1 | 0 | January 21, 2025 |
| Extreme Cold Warning | 1 | 0 | January 21, 2025 |
No tornadoes are recorded in San Juan County in the NOAA Storm Prediction Center database since 1950.