Arizona Severe Flood Watch | Effective 08/11/2026 10:21

Headline: 
Flood Watch issued August 11 at 10:21AM MST until August 11 at 11:00PM MST by NWS Tucson AZ
Event: 
Flood Watch
Urgency: 
Future
Effective: 
August 11, 2026 - 10:21am
Expires: 
August 11, 2026 - 11:00pm
Description: 
* WHAT...Flash flooding caused by excessive rainfall continues to be possible. * WHERE...Eastern Pima county including the Tucson Metro Area, Santa Cruz, Cochise Counties and the valleys of Graham and Greenlee Counties. * WHEN...From 2 PM MST this afternoon through 11 PM MST this evening. * IMPACTS...Excessive rainfall runoff may result in flash flooding of normally dry washes, roadway dips and other low-lying areas. * ADDITIONAL DETAILS... - Scattered to numerous thunderstorms are expected this afternoon into this evening. Rainfall rates in excess of 1 inch per hour are expected, with the stronger storms capable of producing total rainfall amounts between 1 to 3 inches. - Http://www.weather.gov/safety/flood
Instruction: 
You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.
Area Description: 
Upper Santa Cruz River and Altar Valleys including Nogales; Tucson Metro Area including Tucson/Green Valley/Marana/Vail; Upper San Pedro River Valley including Sierra Vista/Benson; Eastern Cochise County Below 5000 Feet including Douglas/Willcox; Upper Gila River and Aravaipa Valleys including Clifton/Safford; Galiuro and Pinaleno Mountains including Mount Graham; Chiricahua Mountains including Chiricahua National Monument; Dragoon/Mule/Huachuca and Santa Rita Mountains including Bisbee/Canelo Hills/Madera Canyon; Santa Catalina and Rincon Mountains including Mount Lemmon/Summerhaven
Forcast Office: 
NWS Tucson AZ
Sender: 
w-nws.webmaster@noaa.gov