638
WGUS65 KTWC 110959
FFATWC
FLOOD WATCH
NATIONAL WEATHER SERVICE TUCSON AZ
259 AM MST TUE AUG 11 2026
AZZ503-504-507>509-511>514-120000-
/O.CON.KTWC.FA.A.0008.260811T2100Z-260812T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
UPPER SANTA CRUZ RIVER VALLEY/ALTAR VALLEY-TUCSON METRO AREA-
UPPER SAN PEDRO RIVER VALLEY-EASTERN COCHISE COUNTY BELOW
5000 FEET-UPPER GILA RIVER VALLEY-GALIURO AND PINALENO MOUNTAINS-
CHIRICAHUA MOUNTAINS-DRAGOON AND MULE AND HUACHUCA AND SANTA RITA
MOUNTAINS-CATALINA AND RINCON MOUNTAINS-
INCLUDING THE CITIES OF SAFFORD, MOUNT GRAHAM, MOUNT LEMMON,
SUMMERHAVEN, DOUGLAS, BENSON, CANELO HILLS, MARANA, CHIRICAHUA
N.M., MADERA CANYON, VAIL, BISBEE, TUCSON, CLIFTON, GREEN VALLEY,
WILLCOX, NOGALES, AND SIERRA VISTA
259 AM MST TUE AUG 11 2026
...FLOOD WATCH REMAINS IN EFFECT FROM 2 PM MST THIS AFTERNOON THROUGH
THIS EVENING...
* WHAT...FLASH FLOODING CAUSED BY EXCESSIVE RAINFALL CONTINUES TO BE
POSSIBLE.
* WHERE...A PORTION OF SOUTHEAST ARIZONA, INCLUDING THE FOLLOWING
AREAS, 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, TUCSON
METRO AREA, UPPER GILA RIVER VALLEY, UPPER SAN PEDRO RIVER VALLEY
AND UPPER SANTA CRUZ RIVER VALLEY/ALTAR VALLEY.
* WHEN...FROM 2 PM MST THIS AFTERNOON THROUGH THIS EVENING.
* IMPACTS...EXCESSIVE RUNOFF MAY RESULT IN FLOODING OF RIVERS,
CREEKS, STREAMS, AND OTHER LOW-LYING AND FLOOD-PRONE LOCATIONS.
FLOODING MAY OCCUR IN POOR DRAINAGE AND URBAN AREAS. LOW-WATER
CROSSINGS MAY BE FLOODED. CREEKS AND STREAMS MAY RISE OUT OF THEIR
BANKS.
* 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 WITH ISOLATED AREAS HAVING
THE POTENTIAL OF 2 INCHES OR MORE IN AN HOUR.
- HTTP://WWW.WEATHER.GOV/SAFETY/FLOOD
PRECAUTIONARY/PREPAREDNESS ACTIONS...
YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION
SHOULD FLASH FLOOD WARNINGS BE ISSUED.
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