Heavy rain from a thunderstorm caused flash flooding near the community of Wide Ruins.
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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.
Heavy rain from a thunderstorm caused flash flooding near the community of Wide Ruins.
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 Jul 24, 3:20 PM MST, 45 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE FLAGSTAFF AZ 320 PM MST SAT JUL 24 2010 .SYNOPSIS...A SLIGHT DRYING AND WARMING TREND WILL DEVELOP THIS WEEKEND...WITH THE MOST ACTIVE AREA FOR SHOWERS AND THUNDERSTORMS SHIFTING EAST OF FLAGSTAFF. THE MOIST SOUTHERLY FLOW IS EXPECTED TO RETURN BY TUESDAY WITH SHOWER AND THUNDERSTORM ACTIVITY INCREASING. && .DISCUSSION...CLOUD COVER THIS MORNING AND AFTERNOON PREVENTED SURFACE HEATING AND INSTABILITY WEST OF A BLACK CANYON CITY TO CHINLE LINE. EAST OF THIS LINE...SCATTERED THUNDERSTORMS DEVELOPED. A FEW OF THESE STORMS PRODUCED LOCAL FLOODING. AT LEAST ONE STORM BECAME CAPABLE OF PRODUCING LARGE HAIL. AREAS TO THE WEST OF THE CURRENT STORM ACTIVITY COULD SEE STORMS DEVELOP LATE THIS AFTERNOON AND EVENING. THE CIRCULATION AROUND A HIGH PRESSURE OVER THE WESTERN UNITED STATES WILL BRING A DRIER NORTHERLY FLOW ALOFT OVER THE WESTERN ARIZONA THROUGH MONDAY MORNING. THE MAIN IMPACT WILL BE A A DOWNTURN IN THUNDERSTORMS ACTIVITY...ESPECIALLY NORTHWEST OF A LINE EXTENDING FROM PRESCOTT AND FLAGSTAFF THROUGH THE FOUR CORNERS REGION. BY LATE MONDAY...THE HIGH CENTER SHOULD MOVE TO NEAR THE FOUR CORNERS WITH A MOIST SOUTHERLY FLOW DEVELOPING ONCE AGAIN ACROSS THE STATE. THIS WILL ONCE AGAIN INCREASE SHOWER AND THUNDERSTORM ACTIVITY TUESDAY THROUGH THE END OF THE WEEK. && .AVIATION...FOR THE 18Z PACKAGE...SCATTERED SHRA/TSRA WITH MVFR CEILINGS AND IFR VISIBILITIES IN THE STRONGER STORMS WILL DEVELOP AND CONTINUE UNTIL 03Z. STRONG WIND GUSTS IN EXCESS OF 40 KTS WILL BE POSSIBLE IN AND AROUND THE STRONGER STORMS. AFTER 03Z...STORMS WILL DIMINISH IN COVERAGE AND INTENSITY...ALTHOUGH A SLIGHT CHANCE FOR SHOWERS AND THUNDERSTORMS WILL CONTINUE THROUGH THE NIGHT. AVIATION DISCUSSION NOT UPDATED FOR AMENDMENTS. && .FGZ WATCHES/WARNINGS/ADVISORIES...NONE. PUBLIC.......MAS AVIATION.....DJO VISIT WEATHER.GOV/FLAGSTAFF FOR NORTHERN ARIZONA WEATHER INFORMATION.
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE FLAGSTAFF AZ 1048 AM MST SAT JUL 24 2010 AZZ004>018-037>040-250815- 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- 1048 AM MST SAT JUL 24 2010 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 SCATTERED TO NUMEROUS SHOWERS AND THUNDERSTORMS ARE EXPECTED ACROSS NORTHERN ARIZONA TODAY. THE MAIN THREATS WILL BE HEAVY DOWNPOURS AND LOCALIZED FLOODING. FREQUENT CLOUD TO GROUND LIGHTNING WILL ACCOMPANY THUNDERSTORMS. A FEW OF THE STRONGER STORMS WILL ALSO PRODUCE DAMAGING HAIL AND STRONG WIND GUSTS...POSSIBLY EXCEEDING 50 MPH. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY SCATTERED TO NUMEROUS AFTERNOON AND EVENING THUNDERSTORMS WILL CONTINUE THROUGH SUNDAY...ALTHOUGH A SLIGHT DECREASE IN COVERAGE IS POSSIBLE. EARLY NEXT WEEK...A RETURN TO DEEP SOUTHERLY FLOW AND AN INCREASE IN THUNDERSTORM COVERAGE IS EXPECTED. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.
The Flagstaff radar (KFSX), 179 km away, was scanning. The volume nearest the first event began at 23:06 UTC.
1 flash flood. Local standard time, as filed.
Heavy rain from a thunderstorm caused flash flooding across Highway 191 between mile post 389 and 391.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Arizona in 2010Every state in 2010This day in weather historyWarnings in Arizona, July 2010
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: 253814.