Thunderstorms produced heavy rain and flash flooding in the Verde Valley from the Clarkdale area to Jerome.
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 episode as NWS FGZ wrote it up.
Thunderstorms produced heavy rain and flash flooding in the Verde Valley from the Clarkdale area to Jerome.
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 Flagstaff, AZ wrote its last area forecast discussion before the first event at Sep 5, 9:55 AM MST, 5 hours 5 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE FLAGSTAFF AZ 955 AM MST SAT SEP 5 2015 .SYNOPSIS...SCATTERED SHOWERS AND THUNDERSTORMS WILL CONTINUE OVER THE NEXT SEVERAL DAYS...WITH THE BEST CHANCES OF STORMS OVER THE EASTERN HALF OF THE STATE. A PATTERN CHANGE MAY LEAD TO SOME SUBSTANTIAL DRYING TOWARD THE END OF NEXT WEEK. && .UPDATE/DISCUSSION... LOOK FOR THE MAJORITY OF CONVECTIVE ACTIVITY THIS AFTERNOON/EVENING TO BE NEAR/EAST OF A LINE FROM PRESCOTT TO THE GRAND CANYON VILLAGE. DESPITE HIGH SURFACE DEW POINTS...AN ELEVATED TEMPERATURE INVERSION MAY LIMIT INSTABILITY AND STORM INTENSITY TODAY. GRIDS HAVE BEEN UPDATED...INCLUDING INCREASING WIND SPEEDS/GUSTS ON THE COCONINO AND KAIBAB PLATEAUS. && .PREV DISCUSSION /415 AM MST/... SHOWERS AND THUNDERSTORMS ARE FORECAST TO BE MOST FOCUSED OVER THE EASTERN HALF OF THE STATE FOR THE NEXT COUPLE DAYS...WITH LOWER STORM CHANCES CONTINUING ELSEWHERE. FOR TODAY...SOME DRYING IS ANTICIPATED MAINLY WEST OF PRESCOTT-FLAGSTAFF-PAGE LINE AS WEST- SOUTHWESTERLY FLOW STRENGTHENS A BIT. LOW-GRADE MONSOONAL STORM COVERAGE IS FORECAST TO CONTINUE INTO EARLY NEXT WEEK. EXTENDED PORTION OF THE 7-DAY FORECAST IS RATHER UNCERTAIN AT THIS TIME...WITH DIFFERENCES BETWEEN THE GFS & ECMWF IN ADDITION TO HOW TROPICAL INFLUENCES MAY EVENTUALLY AFFECT THE REGION. FOR NOW...STILL GOING WITH A CONTINUATION OF THE CURRENT LOWER-GRADE STORM CHANCES. && .AVIATION...FOR THE 18Z PACKAGE...LOW IFR CEILINGS OVER MOUNTAIN AIRFIELDS THIS MORNING WILL MIX OUT BY NOON MST. EXPECT ISOLATED TO SCATTERED SHOWERS AND THUNDERSTORMS THIS AFTERNOON. STORM ACTIVITY WILL DIMINISH AFTER SUNSET. AVIATION DISCUSSION NOT UPDATED FOR TAF AMENDMENTS. && .FGZ WATCHES/WARNINGS/ADVISORIES...NONE. && PUBLIC...TAYLOR/KD AVIATION...BOHLIN FOR NORTHERN ARIZONA WEATHER INFORMATION VISIT WEATHER.GOV/FLAGSTAFF
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE FLAGSTAFF AZ 636 AM MST SAT SEP 5 2015 AZZ004>018-037>040-060700- KAIBAB PLATEAU-MARBLE AND GLEN CANYONS-GRAND CANYON COUNTRY- COCONINO PLATEAU-YAVAPAI COUNTY MOUNTAINS- NORTHEAST PLATEAUS AND MESAS HWY 264 NORTHWARD-CHINLE VALLEY- CHUSKA MOUNTAINS AND DEFIANCE PLATEAU- LITTLE COLORADO RIVER VALLEY IN COCONINO COUNTY- LITTLE COLORADO RIVER VALLEY IN NAVAJO COUNTY- LITTLE COLORADO RIVER VALLEY IN APACHE COUNTY- WESTERN MOGOLLON RIM-EASTERN MOGOLLON RIM-WHITE MOUNTAINS- NORTHERN GILA COUNTY-YAVAPAI COUNTY VALLEYS AND BASINS- OAK CREEK AND SYCAMORE CANYONS-BLACK MESA AREA- NORTHEAST PLATEAUS AND MESAS SOUTH OF HWY 264- 636 AM MST SAT SEP 5 2015 THIS HAZARDOUS WEATHER OUTLOOK IS FOR APACHE...COCONINO... NORTHERN GILA...NAVAJO...AND YAVAPAI COUNTIES IN NORTHERN ARIZONA. .DAY ONE...TODAY AND TONIGHT SHOWERS AND THUNDERSTORMS ARE FORECAST TO DEVELOP TODAY...WITH THE BEST CHANCES EAST OF A LINE FROM PRESCOTT TO FLAGSTAFF TO PAGE. PRIMARY THREATS WILL BE LOCALLY HEAVY RAIN...GUSTY THUNDERSTORM WINDS...LIGHTNING AND ISOLATED HAIL. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY DAILY CHANCES FOR SHOWERS AND STORMS WILL PERSIST...WITH THE HIGHER CHANCES ACROSS EASTERN ARIZONA. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.
The Flagstaff radar (KFSX), 77 km away, was scanning. The volume nearest the first event began at 22:00 UTC.
1 heavy rain, 1 flash flood. Local standard time, as filed.
Several heavy thunderstorms produced 2.44 inches of rain at the Jerome State Historical Park. This lead to flash flooding over the Old Jerome Highway.
Heavy rain from thunderstorms produce flash flooding over the Old Jerome Highway closing the road.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Arizona in 2015Every state in 2015This day in weather historyWarnings in Arizona, September 2015
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: 601504, 601503.