Flood Watch issued August 30 at 6:15AM MST until August 31 at 5:00AM MST by NWS Tucson AZ

Tohono O'odham Nation including Sells; 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

Urgency: Future

Certainty: Possible

Onset: 8/30/2026, 1:15:00 PM

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

Details

* WHAT...Flash flooding caused by excessive rainfall continues to be possible. * WHERE...Tucson Metro Area, Southeast Pinal County, Tohono O'odham Nation, Upper San Pedro River Valley Upper Santa Cruz River Valley/Altar Valley, Baboquivari Mountains, Catalina and Rincon Mountains, Dragoon and Mule and Huachuca and Santa Rita Mountains. * WHEN...Through late tonight. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Low-water crossings may be flooded. Flooding may occur in poor drainage and urban areas. * ADDITIONAL DETAILS... - An increase in moisture will bring scattered thunderstorms today. Rainfall rates in excess of 1 inch per hour are expected with the stronger storms with isolated areas having the potential of 1-3 inches. Additional rainfall from the previous day and overnight activity will result in faster responses in normally dry washes, creeks and roadway dips. - 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 4:23AM MST until September 1 at 12:00AM MST by NWS Flagstaff AZ

Yavapai County Mountains; Northern Gila County; Yavapai County Valleys and Basins; Oak Creek and Sycamore Canyons

Flood Watch issued August 30 at 4:23AM MST until September 1 at 12:00AM MST by NWS Flagstaff AZ

Kaibab Plateau; Marble and Glen Canyons; Grand Canyon Country; Coconino Plateau; Northeast Plateaus and Mesas Hwy 264 Northward; Chinle Valley; Chuska Mountains and Defiance Plateau; Little Colorado River Valley in Coconino County; Little Colorado River Valley in Navajo County; Little Colorado River Valley in Apache County; Western Mogollon Rim; Eastern Mogollon Rim; White Mountains; Black Mesa Area; Northeast Plateaus and Mesas South of Hwy 264

Flood Watch issued August 30 at 4:18AM MDT until August 31 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

Flood Watch issued August 30 at 1:06AM MST until August 31 at 5:00AM MST by NWS Phoenix AZ

Superior; Northwest Pinal County; West Pinal County; Apache Junction/Gold Canyon; Pinal/Superstition Mountains; Sonoran Desert Natl Monument; San Carlos; Dripping Springs; Globe/Miami; Southeast Gila County

Flood Watch issued August 30 at 1:06AM 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; Tonto Basin; Mazatzal Mountains

Source: National Weather Service.