Arizona Severe Flood Watch | Effective 07/20/2026 11:10

Headline: 
Flood Watch issued July 20 at 11:10AM MST until July 21 at 10:00PM MST by NWS Tucson AZ
Event: 
Flood Watch
Urgency: 
Future
Effective: 
July 20, 2026 - 11:10am
Expires: 
July 21, 2026 - 3:00am
Description: 
* WHAT...Flash flooding caused by excessive rainfall continues to be possible. * WHERE...Portions of Southeast Arizona including Graham, Greenlee, Cochise and Santa Cruz counties. * WHEN...Through Tuesday evening. The greatest risk is Monday afternoon and evening and again Tuesday afternoon and evening. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, dry washes, and other low-lying and flood-prone locations. * ADDITIONAL DETAILS... - The combination of ample moisture across southeast Arizona and an upper-level disturbance moving into the area from New Mexico today will result in widespread showers and thunderstorms... especially south and east of Tucson. These storms will be capable of producing heavy rainfall, with localized rainfall amounts between 1 and 3 inches. Given how saturated soils are across the area from storms over the past week, there is an increased potential for rainfall runoff to produce flash flooding. - 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; 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; White Mountains of Graham and Greenlee Counties including Hannagan Meadow; 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
Forcast Office: 
NWS Tucson AZ