Several thunderstorms produced heavy rain and hail over the Heber-Overgaard area.
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.
Several thunderstorms produced heavy rain and hail over the Heber-Overgaard area.
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 17, 9:40 AM MST, 50 minutes earlier.
AREA FORECAST DISCUSSION...UPDATE NATIONAL WEATHER SERVICE FLAGSTAFF AZ 940 AM MST THU SEP 17 2009 .SYNOPSIS...A LOW PRESSURE SYSTEM WILL DRIFT VERY SLOWLY SOUTHEASTWARD ACROSS EAST-CENTRAL ARIZONA TODAY. SCATTERED THUNDERSTORMS ARE EXPECTED...ESPECIALLY NEAR THE NEW MEXICO BORDER. AS THE LOW MAKES ITS WAY INTO WEST CENTRAL NEW MEXICO ON FRIDAY...WIDELY SCATTERED STORMS CAN AGAIN BE EXPECTED ACROSS EAST CENTRAL ARIZONA. DRIER CONDITIONS ARE ANTICIPATED FOR THE WEEKEND. && .DISCUSSION...AN UPPER LEVEL LOW WILL DRIFT FROM ITS CURRENT LOCATION IN EAST-CENTRAL ARIZONA AND INTO NEW MEXICO OVER THE COMING 24 HRS. THE POSITION OF THIS LOW MAKES STORM DEVELOPMENT MOST FAVORABLE THIS AFTERNOON AND TOMORROW NEAR THE NEW MEXICO BORDER WITH MUCH LESSER CHANCES WEST OF FLAGSTAFF. WILL CONTINUE TO MONITOR CONVECTIVE EVOLUTION THROUGH THIS MORNING TO DETERMINE IF SHORT-TERM PRECIP CHANCES NEED ADJUSTMENT. BY LATE SATURDAY THROUGH EARLY MONDAY...AS THIS LOW PRESSURE WEAKENS AND MOVES OUT OF THE REGION...A DRYING WEST-NORTHWESTERLY FLOW ALOFT IS ANTICIPATED TO REDUCE MOISTURE ACROSS THE NORTHLAND. MODELS DIFFER ON HOW FAR WEST TO BRING ANOTHER CLOSED LOW FROM THE UPPER MIDWEST NEAR THE END OF THE 7-DAY FORECAST PERIOD...BUT WE ARE LIKELY TO KEEP THE FORECAST PREDOMINANTLY DRY AT THIS TIME. AFTERNOON MAX TEMPS CURRENTLY LOOK TO REMAIN WITHIN A FEW DEGREES OF DAILY NORMALS THROUGH THE MAJORITY OF THE COMING WEEK. && .AVIATION...FOR THE 18Z PACKAGE...SCT SHRA/TSRA EXPECTED TO DEVELOP BTWN 18-22Z ACROSS NRN AZ WITH MVFR PSBL IN THE STRONGEST STORMS. CONVECTIVE ACTIVITY DECREASING BTWN 02-04Z FRIDAY. AVIATION DISCUSSION NOT UPDATED FOR AMENDMENTS. && .FGZ WATCHES/WARNINGS/ADVISORIES...NONE. && PUBLIC.......................KD AVIATION/FIRE WEATHER........DB VISIT WEATHER.GOV/FLAGSTAFF FOR NORTHERN ARIZONA WEATHER INFORMATION.
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE FLAGSTAFF AZ 954 AM MST THU SEP 17 2009 AZZ004>018-037>040-180600- 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- 954 AM MST THU SEP 17 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EAST CENTRAL ARIZONA...NORTH CENTRAL ARIZONA...NORTHEAST ARIZONA AND WEST CENTRAL ARIZONA. .DAY ONE...TODAY AND TONIGHT A LOW PRESSURE SYSTEM NEAR EAST-CENTRAL ARIZONA TODAY WILL LEAD TO ISOLATED TO SCATTERED THUNDERSTORMS THROUGH TONIGHT. THE BEST CHANCES FOR STORMS WILL BE EAST OF A LINE FROM PAYSON TO THE FOUR CORNERS...WITH ONLY VERY SLIGHT CHANCES EXPECTED WEST OF FLAGSTAFF. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY THE CENTER OF THE LOW WILL MOVE INTO NEW MEXICO BY FRIDAY WITH MOISTURE...AND CHANCES FOR THUNDERSTORMS...LINGERING ACROSS EASTERN ARIZONA. DRIER CONDITIONS ARE EXPECTED AS WE HEAD FROM LATE SATURDAY AND INTO EARLY NEXT WEEK. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.
The Flagstaff radar (KFSX), 57 km away, was scanning. The volume nearest the first event began at 17:28 UTC.
1 heavy rain, 1 hail. Local standard time, as filed.
Thunderstorms produced up to 2.50 inches of rain in just over two hours. The heavy rain clogged a drainage ditch, flooded a yard, and flowed into a basement.
Thunderstorms also produced hail from pea to not quite dime/nickel sized (1/4 to under 7/8 inch diameter). The hail covered the ground and was piled two inches deep on a deck.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Arizona in 2009Every state in 2009This day in weather historyWarnings in Arizona, September 2009
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: 197191, 197199.