Flood Watch issued August 30 at 11:36AM MDT until September 1 at 12:00AM MDT by NWS Grand Junction CO

Animas River Basin; San Juan River Basin

Urgency: Future

Certainty: Possible

Onset: 8/31/2026, 12:00:00 PM

Expires: 8/31/2026, 12:00:00 PM

Details

* WHAT...Flash flooding caused by excessive rainfall is possible. * WHERE...A portion of southwest Colorado, including the following areas, Animas River Basin and San Juan River Basin. * WHEN...From Monday morning through Monday evening. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Recent burn scars will also be especially susceptible. * ADDITIONAL DETAILS... - Monsoonal moisture will remain across the area through Monday evening and will support thunderstorms and showers with heavy rainfall across the watch area. Several rounds of heavier rain are expected increasing the chance for flash flooding especially in our more susceptible areas. - http://www.weather.gov/safety/flood

What To Do

You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.

Other Active Flood Watch Alerts

Flood Watch issued August 30 at 11:42AM MST until August 31 at 5:00AM MST by NWS Tucson AZ

Upper Santa Cruz River and Altar Valleys including Nogales; Tucson Metro Area including Tucson/Green Valley/Marana/Vail; South Central Pinal County including Eloy/Picacho Peak State Park; Southeast Pinal County including Kearny/Mammoth/Oracle; Upper San Pedro River Valley including Sierra Vista/Benson; Dragoon/Mule/Huachuca and Santa Rita Mountains including Bisbee/Canelo Hills/Madera Canyon; Santa Catalina and Rincon Mountains including Mount Lemmon/Summerhaven; Baboquivari Mountains including Kitt Peak

Flood Watch issued August 30 at 11:42AM MST until August 31 at 10:00PM MST by NWS Tucson AZ

Tohono O'odham Nation including Sells

Flood Watch issued August 30 at 11:32AM MST until August 31 at 5:00AM MST by NWS Phoenix AZ

Aguila Valley; Northwest Valley; Tonopah Desert; Buckeye/Avondale; Cave Creek/New River; Deer Valley; Central Phoenix; North Phoenix/Glendale; New River Mesa; Scottsdale/Paradise Valley; Rio Verde/Salt River; East Valley; Fountain Hills/East Mesa; South Mountain/Ahwatukee; Southeast Valley/Queen Creek; Superior; Northwest Pinal County; West Pinal County; Apache Junction/Gold Canyon; Tonto Basin; Mazatzal Mountains; Pinal/Superstition Mountains; Sonoran Desert Natl Monument; San Carlos; Dripping Springs; Globe/Miami; Southeast Gila County

Flood Watch issued August 30 at 12:21PM MDT until August 31 at 9:00PM MDT by NWS Salt Lake City UT

Eastern Juab/Millard Counties; Central Mountains; Sanpete Valley; Sevier Valley; 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 and Vicinity; Western Canyonlands; Glen Canyon Recreation Area/Lake Powell

Flood Watch issued August 30 at 11:36AM MDT until September 1 at 12:00AM MDT by NWS Grand Junction CO

Central Yampa River Basin; Roan and Tavaputs Plateaus; Grand Valley; Debeque to Silt Corridor; Central Colorado River Basin; Grand and Battlement Mesas; Gore and Elk Mountains/Central Mountain Valleys; Central Gunnison and Uncompahgre River Basin; West Elk and Sawatch Mountains; Flat Tops; Upper Gunnison River Valley; Uncompahgre Plateau/Dallas Divide; Northwestern San Juan Mountains; Southwest San Juan Mountains; Paradox Valley/Lower Dolores River; Four Corners/Upper Dolores River; Southeast Utah; Tavaputs Plateau; Arches/Grand Flat; La Sal and Abajo Mountains; Canyonlands/Natural Bridges

Source: National Weather Service.