1 flash flood, as filed by the National Weather Service.
Every event with a place to put it. 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 Phoenix, AZ wrote its last area forecast discussion before the first event at Sep 1, 2:15 PM MST, 5 minutes earlier.
AZZ020>028-CAZ030>033-020600- AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE PHOENIX AZ 215 PM MST THU SEP 01 2005 SOUTHWEST AND SOUTH-CENTRAL ARIZONA...AND SOUTHEAST CALIFORNIA FORECAST DISCUSSION .SYNOPSIS... HIGH PRESSURE WILL CONTINUE TO BUILD TO THE EAST OF ARIZONA DURING THE NEXT SEVERAL DAYS. THE RESULTING SOUTHERLY FLOW WILL REINFORCE THE MOISTURE ALREADY IN PLACE ACROSS THE AREA. THIS MOISTURE WILL LEAD TO A CHANCE OF AFTERNOON AND EVENING THUNDERSTORMS OVER SOUTH-CENTRAL ARIZONA TODAY...THROUGH AT LEAST SUNDAY. THE BEST CHANCE OF PRECIPITATION WILL OCCUR OVER THE HIGHER TERRAIN EAST OF PHOENIX. TEMPERATURES ARE EXPECTED TO REMAIN AT OR SLIGHTLY ABOVE NORMAL THROUGH EARLY NEXT WEEK. && .DISCUSSION... MONSOON MOISTURE HAS DEFINITELY SPREAD BACK INTO THE SOUTHERN PORTIONS OF THE STATE. 12Z PLOT DATA SHOWED THE 850/700 MB MONSOON MOISTURE PLUME EXTENDED FROM GUAYMAS MEXICO NORTH TO PHOENIX. ON TOP OF THAT...PLOTS ALSO SHOWED A WEAK BUT SIGNIFICANT WESTERLY 300/250 MB SHORTWAVE OVER SOUTHERN CA MOVING INTO AZ. ALL AZ SOUNDINGS DETECTED PLENTY OF C.A.P.E. WITH CONVECTIVE TRIGGER TEMPERATURES ALL WITHIN THE FORECAST HIGHS. CONSIDERING EXISTING C.A.P.E. IN SOUTH CENTRAL AND PARTS OF SOUTHWEST AZ...ALONG WITH AN APPROACHING SHORTWAVE...THIS EVENING COULD BE CONVECTIVELY ACTIVE. MODELS FORECAST WEAK VERTICAL SHEAR WHICH COULD RESULT IN A FEW ORGANIZED THUNDERSTORMS ON THE CENTRAL DESERTS WITH HAIL. MID LEVEL CONVECTIVE STEERING CURRENTS ARE WEAKLY FROM SOUTH TO NORTH... HOWEVER SOME BACKBUILDING STORMS ARE POSSIBLE. MAIN CONCERN THIS EVENING FOR THE DESERTS OF SOUTH CENTRAL ARIZONA WILL BE ISOLATED SEVERE THUNDERSTORMS...INCLUDING VERY HEAVY RAIN. LOW LEVEL SOUTH TO SOUTHEASTERLY FLOW WILL CONTINUE OVER AZ TONIGHT AND THROUGH THE WEEKEND. THIS WILL SPREAD MONSOON MOISTURE FARTHER WEST AND NORTH INTO AZ. FAST WEST AND SOUTHWESTERLY FLOW ALOFT... ALONG WITH HARD TO DETECT AND TIME WEAK UPPER LEVEL PERTURBATIONS... WILL KEEP THE CONVECTIVE POTENTIAL HIGH THIS WEEKEND. WITH MOISTURE CONTINUING NEXT WEEK...A STANDARD MONSOON FORECAST IS APPROPRIATE OVER SOUTH CENTRAL AZ...WITH A CHANCE FOR AFTERNOON AND EVENING THUNDERSTORMS MAINLY IN THE HIGHER TERRAIN. && .AVIATION... DISCUSSION FOR 00Z TAFS. NO PROBLEMS FORESEEN FOR KBLH...KIPL AND KYUM TAFS THIS EVENING...ALTHOUGH LOTS OF MOISTURE IS IN PLACE OUT THERE...A STRAY THUNDERSTORM CANNOT BE RULED OUT. THIS WOULD BE TOO ISOLD TO INCLUDE IN THESE TAFS ATTM. HOWEVER...KIWA AND KPHX TAFS ARE A DIFFERENT STORY WITH A MOIST AND UNSTABLE AMS IN PLACE AND LOTS OF HEATING. EXPECT SOME GUSTY WINDS AND BLOWING DUST WITH OUTFLOWS AS THEY MOVE NWD TOWARDS THE AREA. BELIEVE MAIN THREAT TIME FOR BOTH SITES WILL GENLY BE AFTER 23Z...WITH MOST OF THE TSTM THREAT OVER BY 04Z. SEE TAFS PHXTAFPHX...PHXTAFIWA...PHXTAFYUM... LAXTAFBLH AND LAXTAFIPL. AVIATION DISCUSSION NOT UPDATED FOR AMENDED TAFS. && .PSR WATCHES/WARNINGS/ADVISORIES... AZ...NONE. CA...NONE. && NATIONAL WEATHER SERVICE PHOENIX IS ON THE INTERNET AT WEATHER.GOV/PHOENIX VASQUEZ
HAZARDOUS WEATHER OUTLOOK.................UPDATED NATIONAL WEATHER SERVICE PHOENIX AZ 1010 AM MST THU SEP 1 2005 AZZ022>024-027-028-020300- GREATER PHOENIX AREA-NORTHWEST AND NORTH CENTRAL PINAL COUNTY- NORTHWEST MARICOPA COUNTY- SOUTHERN GILA COUNTY/TONTO NATIONAL FOREST FOOTHILLS- SOUTHWEST MARICOPA COUNTY- 1010 AM MST THU SEP 1 2005 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH-CENTRAL AND SOUTHWEST ARIZONA. .DAY ONE...TODAY INCREASED MONSOON MOISTURE AND A WEAK UPPER LEVEL DISTURBANCE WILL COMBINE TODAY FOR A CHANCE FOR AFTERNOON AND EVENING SHOWERS AND THUNDERSTORMS OVER PARTS OF SOUTHWEST AND ALL OF SOUTH CENTRAL AZ. ISOLATED SEVERE THUNDERSTORMS ARE POSSIBLE PRODUCING STRONG WIND... HEAVY RAIN...HAIL...AND DENSE BLOWING DUST. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY SOUTH TO SOUTHEAST WINDS ALOFT WILL IMPORT ADDITIONAL MOISTURE INTO SOUTHWEST AND SOUTH-CENTRAL ARIZONA ON FRIDAY THROUGH AT LEAST SUNDAY. A SERIES OF IMPULSES WITHIN THIS MOIST FLOW IS EXPECTED TO CAUSE ADDITIONAL PERIODS OF MAINLY LATE AFTERNOON AND EVENING SHOWERS AND THUNDERSTORMS. SOME STORMS MAY CONTAIN STRONG GUSTY WINDS...BRIEF HEAVY RAIN AND LIGHTNING. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NECESSARY TODAY. SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES. VASQUEZ
The Tucson radar (KEMX), 74 km away, was scanning. The volume nearest the first event began at 21:20 UTC.
1 flash flood. Local standard time, as filed.
Motorist trapped on Old Web Road between Peppersauce and Alder washes due to flooding. All roads intersecting those washes were closed.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Arizona in 2005Every state in 2005This day in weather historyWarnings in Arizona, September 2005
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: 5474354.