1 flash flood, as filed by the National Weather Service.
Every event with a place to put it; 1 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Tucson, AZ wrote its last area forecast discussion before the first event at Sep 25, 2:30 PM MST, 2 hours earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE TUCSON AZ 230 PM MST SAT SEP 25 2004 SOUTHEAST ARIZONA FORECAST DISCUSSION .SYNOPSIS...MOISTURE OVER THE EASTERN PORTION OF THE STATE...ALONG WITH AN UPPER LEVEL DISTURBANCE WILL RESULT IN ISOLATED SHOWERS AND THUNDERSTORMS MAINLY NEAR THE MOUNTAINS EAST OF TUCSON THIS WEEKEND WITH SCATTERED STORMS DEVELOPING ALONG THE RIM. A DEEPER TROUGH OF LOW PRESSURE IS EXPECTED TO DEVELOP ALONG THE CALIFORNIA COAST AND MOVE INLAND DURING THE MIDDLE TO END OF NEXT WEEK...BRINGING INCREASING CLOUDS...COOLER TEMPERATURES AND A FEW SHOWERS TO SOUTHEAST ARIZONA. && .DISCUSSION...LATEST RADAR IMAGERY SHOWS SCATTERED SHOWERS AND THUNDERSTORMS OVER THE RIM COUNTRY AND EXTENDING INTO NEW MEXICO WITH ISOLATED ACTIVITY ACROSS MAINLY THE THREE EASTERN ZONES OF SOUTHEAST ARIZONA. SOME ISOLATED ACTIVITY ALSO NOTED OVER THE MOUNTAINS OF EXTREME EASTERN PIMA AND SANTA CRUZ COUNTIES AS WELL. ALL OF THE ACTIVITY IS MOVING TO THE EAST. SOME OF THESE STORMS ARE PRODUCING RESPECTABLE RAINFALL AMOUNTS...AT LEAST ACCORDING TO RAINFALL ESTIMATES. THE STORMS PRODUCING THE HEAVIEST RAIN ARE OCCURRING IN COCHISE COUNTY NEAR THE CHIRICAHUA MOUNTAINS WITH ESTIMATES IN EXCESS OF 2 INCHES...BUT NOT CONFIDENT THAT THESE AMOUNTS ARE REALISTIC. AT ANY RATE THESE STORMS ARE IN THE PROCESS OF MOVING EAST INTO NEW MEXICO. MODELS ARE IN PRETTY FAIR AGREEMENT IN MOVING THE SHORTWAVE WHICH IS RESPONSIBLE FOR THE ONGOING THUNDERSTORMS SLOWLY EASTWARD THROUGH LATE SUNDAY. THE ASSOCIATED VORT LOBE WILL LINGER ACROSS THE ARIZONA/NEW MEXICO BORDER THROUGH MONDAY BEFORE WEAK SHORTWAVE RIDGING MOVES IN FROM THE WEST ON MONDAY NIGHT AND TUESDAY. HOWEVER...RIGHT ON THE HEELS OF THE RIDGE AXIS IS A DEVELOPING UPPER LOW WHICH IS PROGGED TO DEVELOP INTO A CLOSED LOW OVER THE NORTHERN CALIFORNIA COAST AND THEN DIVE DOWN THE SOUTHERN CALIFORNIA COAST THROUGH EARLY THURSDAY BEFORE SWINGING THROUGH THE DESERT SOUTHWEST THURSDAY AND FRIDAY. EXPECT THE BEST CHANCES FOR SHOWERS AND STORMS TO OCCUR THIS EVENING WITH THE AXIS OF THE SHORTWAVE TROUGH JUST WEST THE TUCSON AREA. AS THE TROUGH AXIS SLIDES TO THE SOUTHEAST MOST OF THE STORMS ON SUNDAY SHOULD BE CONFINED MAINLY TO AREAS EAST OF A LINE FROM SAN CARLOS TO REDINGTON TO FORT HUACHUCA. BY MONDAY AND TUESDAY LOW GRADE POPS WILL BE IN ORDER FOR ONCE AGAIN EXTREME EASTERN ZONES. HOWEVER... WITH THE APPROACH OF THE UPPER LOW BY MIDWEEK AND CONTINUING INTO THE WEEKEND SMALL POPS WILL BE WARRANTED FOR MOST OF THE FORECAST AREA WITH RAIN CHANCES A BIT HIGHER TOWARD THE NEW MEXICO BORDER AND ALSO ALONG THE RIM COUNTRY OF GREENLEE COUNTY. TEMPERATURES WILL GENERALLY REMAIN STATUS QUO THROUGH TUESDAY...BUT WITH THE APPROACHING TROUGH DAYTIME HIGHS WILL DECREASE TO THE MID 80S BY THURSDAY AND FRIDAY. && .TWC WATCHES/WARNINGS/ADVISORIES...NONE. MOLLERE
The Tucson radar (KEMX), 196 km away, was scanning. The volume nearest the first event began at 23:28 UTC.
1 flash flood. Local standard time, as filed.
Localized heavy rainfall caused several streets to become flooded and required closure. Mud and rocks covered U.S. Route 70, after a reported 18 inches of water ran across the road.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Arizona in 2004Every state in 2004This day in weather historyWarnings in Arizona, September 2004
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 5426291.