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San Juan County weather alerts

3 active alerts for San Juan County, Utah right now: a Flood Warning and 2 Flood Watches.

38 in the last 30 days 74 in 12 months (since Aug 30) most common: Flood Watch Get alerts on your phone →

Active alerts for San Juan County

Refreshed every few minutes; times in MDT.

Severe Expected

Flood Warning

Issued Wed, Oct 21, 12:35 PM MDT by NWS Salt Lake City UT Until Thu, Oct 22, 12:15 PM MDT (in 7 hr)

Area: Garfield, UT; Kane, UT; San Juan, UT

* WHAT...Flooding caused by excessive rainfall is expected. * WHERE...San Juan County in southeastern Utah... Southwestern Garfield County in southern Utah... Kane County in southern Utah... * WHEN...Until 1215 PM MDT Thursday. * IMPACTS...Flooding of normally dry washes, slot canyons, rivers, creeks, and other low-lying and flood-prone locations is immin...

What it means: Flooding of rivers, streams or low-lying areas is occurring or expected. Avoid flooded roads and monitor river levels.

Full alert with map and forecast →
Severe Future

Flood Watch

Issued Thu, Oct 22, 2:45 AM MDT by NWS Salt Lake City UT Until Fri, Oct 23, 12:00 AM MDT (in 19 hr)

Area: Central Mountains; Castle Country; San Rafael Swell; Lower Washington County; Zion National Park; Southern Mountains; Upper Sevier River Valleys; Bryce Canyon Country; South Central Utah; Capitol Reef National Park an...

* WHAT...Flash flooding caused by excessive rainfall continues to be possible. * WHERE...A portion of Utah, including the following areas, Castle Country, Central Mountains, San Rafael Swell, Bryce Canyon Country, Capitol Reef National Park and Vicinity, Glen Canyon Recreation Area/Lake Powell, South Central Utah, Southern Mountains, Upper Sevier River Va...

What it means: Conditions are favourable for flooding. Have a plan in case a warning is issued.

Full alert with map and forecast →
Severe Future

Flood Watch

Issued Wed, Oct 21, 10:28 PM MDT by NWS Grand Junction CO Until Fri, Oct 23, 12:00 PM MDT (in 1 day)

Area: Southwest San Juan Mountains; Four Corners/Upper Dolores River; Animas River Basin; San Juan River Basin; Southeast Utah; Arches/Grand Flat; La Sal and Abajo Mountains; Canyonlands/Natural Bridges

* WHAT...Flooding caused by excessive rainfall continues to be possible. * WHERE...Portions of southwest Colorado, including the following areas, Animas River Basin, Four Corners/Upper Dolores River, San Juan River Basin and Southwest San Juan Mountains and Utah, including the following areas, Arches/Grand Flat, Canyonlands/Natural Bridges, La Sal and Aba...

What it means: Conditions are favourable for flooding. Have a plan in case a warning is issued.

Full alert with map and forecast →

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Where

San Juan County on the map

Alert polygons are NWS's own. Forecast Bar's radar shows the same warnings over live precipitation, with future radar and lightning. See the radar.

Last 30 days

Recent alerts for San Juan County

AlertIssuedEndedIssued by
Flood Watch Oct 21, 12:22 PM Oct 23, 12:00 AM Salt Lake City UT
Flood Watch Oct 21, 11:31 AM Oct 23, 12:00 PM Grand Junction CO
Flood Watch Oct 20, 10:11 PM Oct 23, 12:00 AM Salt Lake City UT
Flood Watch Oct 20, 9:53 PM Oct 23, 12:00 PM Grand Junction CO
Flood Watch Oct 20, 11:29 AM Oct 23, 12:00 AM Salt Lake City UT
Flood Watch Oct 20, 11:13 AM Oct 23, 12:00 PM Grand Junction CO
Flood Watch Oct 12, 1:34 PM Oct 12, 6:00 PM Salt Lake City UT
Flood Watch Oct 12, 1:32 PM Oct 12, 6:00 PM Salt Lake City UT
Flood Watch Oct 11, 10:35 PM Oct 12, 6:00 PM Salt Lake City UT
Wind Advisory Oct 11, 9:58 AM Oct 12, 6:00 AM Grand Junction CO
Flood Watch Oct 11, 6:42 AM Oct 12, 6:00 PM Salt Lake City UT
Wind Advisory Oct 10, 9:57 PM Oct 12, 12:00 AM Grand Junction CO
Flood Watch Oct 10, 3:44 PM Oct 12, 6:00 PM Salt Lake City UT
Wind Advisory Oct 10, 10:38 AM Oct 12, 12:00 AM Grand Junction CO
Flood Watch Oct 10, 4:07 AM Oct 12, 6:00 PM Salt Lake City UT
Flood Watch Oct 9, 1:04 PM Oct 12, 6:00 PM Salt Lake City UT
Hydrologic Outlook Oct 9, 10:53 AM Oct 12, 6:00 PM Grand Junction CO
Flood Watch Sep 29, 10:07 PM Sep 30, 6:00 AM Grand Junction CO
Flood Watch Sep 29, 11:22 AM Sep 30, 6:00 AM Grand Junction CO
Flood Watch Sep 29, 9:37 AM Sep 30, 12:00 AM Salt Lake City UT
Flood Watch Sep 29, 5:34 AM Sep 30, 12:00 AM Salt Lake City UT
Flood Watch Sep 29, 4:09 AM Sep 30, 12:00 AM Salt Lake City UT
Flood Watch Sep 28, 10:52 PM Sep 30, 6:00 AM Grand Junction CO
Flood Watch Sep 28, 10:26 PM Sep 30, 12:00 AM Salt Lake City UT
Flood Watch Sep 28, 11:03 AM Sep 30, 6:00 AM Grand Junction CO
Flood Watch Sep 28, 12:24 AM Sep 30, 12:00 AM Salt Lake City UT
Flood Watch Sep 27, 11:27 PM Sep 30, 6:00 AM Grand Junction CO
Flood Watch Sep 27, 10:39 PM Sep 29, 6:00 AM Salt Lake City UT
Flood Watch Sep 27, 9:00 PM Sep 30, 6:00 AM Grand Junction CO
Hydrologic Outlook Sep 27, 8:56 PM Sep 28, 6:00 PM Grand Junction CO
Hydrologic Outlook Sep 27, 1:01 PM Sep 28, 3:15 PM Grand Junction CO
Flood Watch Sep 27, 10:27 AM Sep 30, 6:00 AM Grand Junction CO
Flood Watch Sep 27, 7:48 AM Sep 29, 6:00 AM Salt Lake City UT
Flood Watch Sep 27, 12:45 AM Sep 30, 6:00 AM Grand Junction CO
Hydrologic Outlook Sep 25, 2:21 PM Sep 30, 6:00 AM Grand Junction CO

Pattern

What San Juan County gets alerted for

Every alert that named San Juan County in the last 12 months, by type. Records begin August 30, 2026, so this fills in over the year.

Flood Watch
41
Special Weather Statement
14
Flash Flood Warning
9
Hydrologic Outlook
4
Wind Advisory
3
Severe Thunderstorm Warning
2
Flood Warning
1

Plain English

What these alerts mean

A warning means the hazard is happening or about to; a watch means conditions favour it; an advisory is a lesser hazard still worth planning around.

Flood Warning

Flooding of rivers, streams or low-lying areas is occurring or expected. Avoid flooded roads and monitor river levels.

Flood Watch

Conditions are favourable for flooding. Have a plan in case a warning is issued.

Wind Advisory

Sustained winds of 30 mph or more, or gusts to 45 mph, are expected. Use caution driving high-profile vehicles.

Hydrologic Outlook

Flooding may develop over the coming days as rain, snowmelt or river levels rise.

Special Weather Statement

A heads-up about conditions that do not meet warning or advisory criteria but still deserve attention, such as a strong storm, patchy fog or a brief burst of snow.

Flash Flood Warning

Flash flooding is occurring or imminent. Move to higher ground; never drive into water covering a road.

Severe Thunderstorm Warning

A storm with hail of 1 inch or larger, winds of 58 mph or more, or both, is occurring or imminent. Move indoors and away from windows.

Nearby

Alerts near San Juan County

Neighbouring counties in Utah

Wayne County1 Garfield County2 Grand County1 Emery County1 Kane County2 Sevier County1 All of Utah →

Questions

About San Juan County alerts

How do I get San Juan County weather alerts on my iPhone?

Install Forecast Bar, add San Juan County as a location, and turn on severe weather alerts. Every NWS warning, watch and advisory for San Juan County then arrives as a push notification at the moment of issue, with Critical Alerts available for the most dangerous warnings. Forecast Bar also runs on iPad, Apple Watch, Mac and Apple TV.

Where do these alerts come from?

From the National Weather Service alert feed (api.weather.gov). NWS issues alerts by county and by forecast zone; this page lists every product that names San Juan County. Forecast Bar checks the feed continuously and this page refreshes within a few minutes of a change.

What is the difference between a watch, a warning and an advisory?

A warning means the hazard is occurring, imminent or very likely: act now. A watch means conditions are favourable for it to develop: prepare and stay informed. An advisory covers a hazard that is less serious than a warning but can still cause real inconvenience or danger if you are not ready for it.

Can I get this data as JSON?

Yes. /weather-alerts/ut/san-juan-county.json returns the active alerts, the last 30 days and the 12-month counts for San Juan County, refreshed every minute. Please cache responses and credit National Weather Service as the source.

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