Heavy rain from a thunderstorm caused rock slides on Highway 60 in southern Navajo County.
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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 rock slides on Highway 60 in southern Navajo County.
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 11, 3:15 PM MST, 55 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE FLAGSTAFF AZ 315 PM MST SUN JUL 11 2010 .SYNOPSIS...MONSOONAL MOISTURE ACROSS THE REGION WILL PRODUCE SCATTERED SHOWERS AND THUNDERSTORMS OVER MUCH OF THE AREA INTO NEXT WEEK. SOMEWHAT DRIER AIR WILL MOVE INTO THE NORTHERN SECTIONS OF THE STATE MONDAY THROUGH AT LEAST WEDNESDAY...WITH A DECREASE IN STORM ACTIVITY. MUCH OF THE REST OF THE REGION WILL CONTINUE TO SEE SCATTERED AFTERNOON AND EVENING SHOWERS AND THUNDERSTORMS. && .DISCUSSION...THE CAP HAS COME OFF SOUTH OF THE RIM IN NORTHERN GILA THIS AFTERNOON...WITH SEVERAL LARGE STORMS ONGOING. THIS REGION AND PORTIONS OF EASTERN YAVAPAI COUNTY WILL BE THE TROUBLE SPOTS FOR THE NEXT SEVERAL HOURS AS OUTFLOWS FALL OFF THE RIM. FARTHER TO THE NORTH...ISOLATED TO SCATTERED STORMS ARE OCCURRING ALL THE WAY TO THE UTAH BORDER...HOWEVER...THESE STORMS DO NOT HAVE AS MOISTURE RICH OF AN ENVIRONMENT...AND ARE MORE SUSCEPTIBLE TO THE CAP. MONDAY THROUGH WEDNESDAY...MODELS CONTINUE TO BACK OFF ON ANY DRYING TREND WITH A DEEP POOL OF MOISTURE RESIDING OVER SOUTHERN AND WESTERN ARIZONA. STREAMLINES NEVER REALLY GO NORTHERLY AND THE REGION SHOULD CONTINUE TO BE ABOUT AS ACTIVE AS TODAY. WE STARTED TO BACK OFF DRYING TRENDS IN THE GRIDS...BUT THE NEXT SEVERAL SHIFTS WILL PROBABLY HAVE TO CONTINUE THIS TREND. SOME DRYING IS STILL POSSIBLE LATER IN THE WEEK...BUT AT THIS POINT...IT WOULD SEEM PRUDENT TO JUST GO WITH A GENERAL LOW GRADE SCHEME UP NORTH...AND A MODERATE GRADE SCHEME CENTRAL AND SOUTH. && .AVIATION...FOR THE 00Z PACKAGE...WIDELY SCATTERED THUNDERSTORMS WILL PERSIST THROUGH THE EARLY EVENING HOURS...ESPECIALLY FROM THE MOGOLLON RIM SOUTH. LOOK FOR MVFR VSBYS IN THE STRONGER STORMS. EXPECT STORM COVERAGE AND INTENSITY TO DECREASE AFTER 03Z MONDAY BEFORE INCREASING AGAIN AFTER 18Z. AVIATION DISCUSSION NOT UPDATED FOR AMENDMENTS. && .FIRE WEATHER...DAILY SHOWERS AND THUNDERSTORMS WILL PERSIST ON MONDAY AND TUESDAY WITH THE BEST CHANCES FOR PRECIPITATION ACROSS EAST-CENTRAL ARIZONA. WEDNESDAY THROUGH FRIDAY...SCATTERED AFTERNOON AND EVENING SHOWERS AND THUNDERSTORMS WILL CONTINUE EACH DAY...WITH SOME DRYING EXPECTED IN FAR NORTHERN ARIZONA. && .FGZ WATCHES/WARNINGS/ADVISORIES...NONE. && PUBLIC....................PETERSON AVIATION/FIRE WEATHER.....KD VISIT WEATHER.GOV/FLAGSTAFF FOR NORTHERN ARIZONA WEATHER INFORMATION.
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE FLAGSTAFF AZ 950 AM MST SUN JUL 11 2010 AZZ004>018-037>040-120700- WESTERN MOGOLLON RIM-GRAND CANYON COUNTRY-YAVAPAI COUNTY MOUNTAINS- YAVAPAI COUNTY VALLEYS AND BASINS-OAK CREEK AND SYCAMORE CANYONS- MARBLE AND GLEN CANYONS-KAIBAB PLATEAU-COCONINO PLATEAU- NORTHEAST PLATEAU AND MESAS HWY 264 NORTHWARD- NORTHEAST PLATEAU AND MESAS SOUTH OF HWY 264- CHINLE VALLEY-CHUSKA MOUNTAINS AND DEFIANCE PLATEAU- BLACK MESA AREA-LITTLE COLORADO RIVER VALLEY IN COCONINO COUNTY- LITTLE COLORADO RIVER VALLEY IN NAVAJO COUNTY- LITTLE COLORADO RIVER VALLEY IN APACHE COUNTY- EASTERN MOGOLLON RIM-WHITE MOUNTAINS-NORTHERN GILA COUNTY- 950 AM MST SUN JUL 11 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR APACHE...COCONINO...NORTHERN GILA...NAVAJO...AND YAVAPAI COUNTIES IN NORTHERN ARIZONA. .DAY ONE...TODAY DEEP MOISTURE ACROSS THE SOUTHERN AND CENTRAL PORTIONS OF THE REGION WILL AGAIN LEAD TO SCATTERED SHOWERS AND THUNDERSTORMS BY LATE THIS MORNING AND THROUGH THE AFTERNOON. THE FAR NORTHERN ZONES...NEAR THE UTAH BORDER...HAVE SEEN SOME DRYING. HOWEVER...ENOUGH MOISTURE STILL EXISTS FOR ISOLATED STORM ACTIVITY IN THAT AREA....ESPECIALLY OVER HIGHER TERRAIN. THE MAJORITY OF ACTIVITY TODAY WILL CONTAIN MODERATE TO BRIEFLY HEAVY RAINFALL...AND SMALL HAIL. A FEW STORMS MAY BECOME STRONG THIS AFTERNOON...ESPECIALLY SOUTH OF THE MOGOLLON RIM. STORM DEVELOPMENT IS EXPECTED FIRST TODAY OVER THE WHITE MOUNTAINS...THEN SPREADING ALONG THE MOGOLLON RIM. STORMS WILL MOVE FROM SOUTHWEST TO NORTHEAST TODAY. THE MOST ACTIVE AREAS ARE EXPECTED TO BE ALONG AND SOUTH OF THE CENTRAL MOGOLLON RIM AND WHITE MOUNTAINS. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY SCATTERED AFTERNOON AND EVENING SHOWERS AND THUNDERSTORMS WILL CONTINUE EACH DAY. SOME ADDITIONAL DRYING IS EXPECTED TUESDAY THROUGH THURSDAY IN THE FAR NORTHERN ZONES. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.
The national radar mosaic for the moment the first event began.
1 debris flow. Local standard time, as filed.
Heavy rain from a thunderstorm caused several rock slides on Highway 60 in southern Navajo County.
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: 253055.