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Severe · Flood WatchActive alert

Flood Watch issued September 16 at 3:18AM MST until September 16 at

Affecting Western Pima County Including Ajo/Organ Pipe Cactus National Monument; 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; 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; Santa Catalina and Rincon Mountains including Mount Lemmon/Summerhaven; Baboquivari Mountains including Kitt Peak

In effect until: Sep 17, 2026, 12:00 AM

Western Pima County Including Ajo/Organ Pipe Cactus National Monument; 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; 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; Santa Catalina and Rincon Mountains including Mount Lemmon/Summerhaven; Baboquivari Mountains including Kitt Peak

Possible impact zone; conditions develop through 12:00 AM.

You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop.

Read the original bulletin (official text)
* WHAT...Flooding caused by excessive rainfall continues to be
possible.

* WHERE...A portion of Southeast Arizona, including the following
areas, Baboquivari Mountains, Catalina and Rincon Mountains,
Chiricahua Mountains, Dragoon and Mule and Huachuca and Santa Rita
Mountains, Eastern Cochise County below 5000 feet, Galiuro and
Pinaleno Mountains, South Central Pinal County, Southeast Pinal
County, Tohono O'odham Nation, Tucson Metro Area, Upper Gila River
Valley, Upper San Pedro River Valley, Upper Santa Cruz River
Valley/Altar Valley, Western Pima County and White Mountains of
Graham and Greenlee Counties.

* WHEN...Through this evening.

* IMPACTS...Excessive runoff may result in flooding of rivers,
creeks, streams, and other low-lying and flood-prone locations.
Creeks and streams may rise out of their banks. Flooding may occur
in poor drainage and urban areas. Low-water crossings may be
flooded.

* ADDITIONAL DETAILS...
- Well above normal moisture levels for September are expected to
result in scattered to numerous showers and thunderstorms capable
of producing heavy rainfall today into this evening. Rain totals
of 1 to 2 inches are expected with the stronger storms with
isolated amounts over 2 inches possible. Areas that received
substantial rainfall over the previous two to four days will be
more susceptible to flash flooding. This rainfall will result in
faster response in washes, creeks, and storm drainages.
- http://www.weather.gov/safety/flood
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Alert data: U.S. National Weather Service / NOAA · Translation: WeatherTranslate™