A thunderstorm produced flash flooding near Jakes Corner.
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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.
A thunderstorm produced flash flooding near Jakes Corner.
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 Aug 25, 3:45 PM MST, 3 hours earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE FLAGSTAFF AZ 345 PM MST TUE AUG 25 2015 .SYNOPSIS...DEEPER MOISTURE WILL CONTINUE TO MOVE NORTHWARD ACROSS ARIZONA THROUGH WEDNESDAY...BRINGING AN INCREASE IN THUNDERSTORM ACTIVITY. SOME STORMS COULD PRODUCE HEAVY RAINFALL WITH LOCALIZED FLOODING...HAIL AND GUSTY WINDS. LOOK FOR A DECREASE IN STORM COVERAGE TOWARD THE END OF THE WEEK. && .DISCUSSION...THE STRONGEST STORMS TODAY HAVE FORMED IN AN AREA FROM SOUTHEAST OF FLAGSTAFF TO THE WHITE MOUNTAINS TO NORTHEAST OF FLAGSTAFF TO NEAR WINDOW ROCK THIS AFTERNOON. THESE STORMS ARE GENERALLY MOVING NORTH TO NORTHEAST AT AROUND 15 MPH. A BREAK IN THE CLOUDS OVER CENTRAL ARIZONA INTO YAVAPAI COUNTY WILL LIKELY HELP TRIGGER STORMS LATER THIS AFTERNOON AND EVENING. CONVECTION ACROSS SOUTHERN ARIZONA FROM NEAR AJO TO THE NEW MEXICO BOARDER MAY CONTINUE MOVE NORTHWARD AND CONTINUE WELL INTO THE NIGHT INTO AREAS WHERE THE SURFACE HEATING IS BUILDING CAPE. BOTTOM LINE...THERE COULD WELL BE SOME STRONG STORMS THIS EVENING AND TONIGHT ACROSS NORTHERN ARIZONA TONIGHT...ESPECIALLY OVER YAVAPAI COUNTY. MOISTURE LEVELS REMAIN ELEVATED WEDNESDAY WITH ANOTHER ROUND OF SCATTERED SHOWERS AND STORMS EXPECTED. THURSDAY INTO THE WEEKEND...THE RIDGE SHIFT SOUTH AND SOUTHEAST OF OUR AREA WITH A DRIER AIR MASS AFFECTING AREAS NORTHWEST OF FLAGSTAFF. ENOUGH MOISTURE IS NOW FORECAST TO LINGER OVER CENTRAL AND EASTERN ARIZONA FOR ISOLATED TO SCATTERED AFTERNOON SHOWERS AND STORMS MAINLY OVER THE HIGHER TERRAIN. POP VALUES WERE RAISED FOR THIS TIME PERIOD WITH THIS MORNINGS PACKAGE. && .AVIATION...FOR THE 00Z PACKAGE...SHOWER AND THUNDERSTORM ACTIVITY WILL CONTINUE ACROSS NORTHERN ARIZONA WITH PERIODS OF MVFR/IFR CONDITIONS IN HEAVY RAIN AND LOW CEILINGS. IN ADDITION...ERRATIC SURFACE WINDS WITH GUSTS IN EXCESS OF 30 KNOTS ARE POSSIBLE IN THE VICINITY OF THE STRONGEST STORMS. AVIATION DISCUSSION NOT UPDATED FOR TAF AMENDMENTS. && .FGZ WATCHES/WARNINGS/ADVISORIES...NONE. && PUBLIC...MAS/JJ AVIATION...MCCOLLUM FOR NORTHERN ARIZONA WEATHER INFORMATION VISIT WEATHER.GOV/FLAGSTAFF
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE FLAGSTAFF AZ 525 AM MST TUE AUG 25 2015 AZZ004>018-037>040-260400- 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- 525 AM MST TUE AUG 25 2015 THIS HAZARDOUS WEATHER OUTLOOK IS FOR APACHE...COCONINO... NORTHERN GILA...NAVAJO...AND YAVAPAI COUNTIES IN NORTHERN ARIZONA. .DAY ONE...TODAY AND TONIGHT INCREASING MONSOON MOISTURE WILL RESULT IN WIDESPREAD SHOWERS AND THUNDERSTORMS TODAY AND TONIGHT OVER MUCH OF NORTHERN ARIZONA. LOCALIZED HEAVY RAINFALL AND FLOODING...HAIL...GUSTY WINDS AND CLOUD TO GROUND LIGHTNING WILL BE THE MAIN THREATS. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY DEEP MOISTURE WILL LINGER OVER THE REGION WEDNESDAY WITH ANOTHER ROUND OF SCATTERED SHOWERS AND THUNDERSTORMS. LOCALIZED FLOODING WILL BE THE MAIN THREAT...THOUGH HAIL AND GUSTY WINDS WILL ALSO BE POSSIBLE. A GRADUAL DECREASE IN THUNDERSTORM CHANCES IS FORECAST FOR THE END OF THE WEEK. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER TO LOCAL LAW ENFORCEMENT...OR THE NATIONAL WEATHER SERVICE BY CALLING 1-888-745-1637.
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
124 PM MST TUE AUG 25 2015
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0113 PM HEAVY RAIN 10 SW CONCHO 34.37N 109.73W
08/25/2015 M1.00 INCH APACHE AZ TRAINED SPOTTER
SPOTTER MEASURED 1.00 INCH OF RAIN IN HALF AN HOUR
&&
EVENT NUMBER FGZ1500127
TRCThe Flagstaff radar (KFSX), 63 km away, was scanning. The volume nearest the first event began at 01:42 UTC.
1 flash flood. Local standard time, as filed.
Water was flowing over State Route 188 near Jakes Corner.
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, August 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: 600734.