A severe thunderstorm produced one inch diameter hail near Cross Mountain.
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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 severe thunderstorm produced one inch diameter hail near Cross Mountain.
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 30, 9:30 AM MST, 2 hours 48 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE FLAGSTAFF AZ 930 AM MST SAT AUG 30 2008 .SYNOPSIS....A TROUGH OF LOW PRESSURE WILL MOVE ACROSS THE WESTERN UNITED STATES THIS LABOR DAY WEEKEND PRODUCING WIDESPREAD RAIN AND THUNDERSTORMS ACROSS THE NORTHLAND. THE PERIOD OF HEAVIEST PRECIPITATION IS EXPECTED FROM LATE TONIGHT THROUGH SUNDAY AFTERNOON. DRIER AND BREEZY CONDITIONS WILL DEVELOP BY MONDAY AND TUESDAY. && .DISCUSSION...AN UNSEASONABLY STRONG TROUGH OF LOW PRESSURE IS APPROACHING THE WEST COAST OF THE U.S. THIS MORNING AND IS FORECAST TO MOVE ACROSS THE SOUTHWESTERN STATES OVER THE LABOR DAY WEEKEND. IN ADVANCE OF THIS TROUGH MOISTURE CONTINUES TO INCREASE ACROSS AZ THIS MORNING. GPSMET INDICATES PW VALUES HAVE INCREASED FROM ABOUT 0.4 INCHES AT THIS TIME YESTERDAY TO AROUND 0.9 INCHES THIS MORNING. LAPSE RATES REMAIN FAIRLY STEEP. CONSEQUENTLY...ESTIMATED CAPE VALUES FROM THE 12Z KFGZ SOUNDING ARE IN EXCESS OF 2200 J/KG. THIS IS EXCEPTIONALLY LARGE AND IS IN THE 95TH PERCENTILE. DEEP LAYER SHEAR REMAINS FAIRLY WEAK BUT LOW LEVEL SHEAR IS ADEQUATE TO SUPPORT SOME STRONG THUNDERSTORMS THIS AFTERNOON. SOME STORMS MAY BECOME PULSE SEVERE WITH STRONG DAMAGING WINDS AND LARGE HAIL POSSIBLE. MODEL FCST SOUNDINGS CONTINUE TO INDICATE THAT DEEP LAYER SATURATION WILL DEVELOP ACROSS MUCH OF THE CWA OVERNIGHT AND CONTINUE INTO SUNDAY MORNING. IN ADDITION...THERE WILL BE ADEQUATE DEEP LAYER SOUTH TO SOUTHWEST WINDS TO GENERATE MODERATE OROGRAPHIC UPLIFT. CONSEQUENTLY... EXPECT THAT CONVECTIVE ACTIVITY THIS AFTERNOON AND EVENING WILL TRANSITION INTO WIDESPREAD LIGHT TO MODERATE STRATIFORM PCPN OVERNIGHT...ALONG WITH THE CHANCE OF SOME EMBEDDED THUNDERSTORMS. MODEL FCST TOTAL PCPN AMOUNTS SUGGEST THAT 1/2 TO 1 INCH OF RAIN IS LIKELY OVER MANY LOCATIONS WITH 1 TO 2 INCHES POSSIBLE OVER THE SOUTH AND WEST FACING SLOPES OF THE HIGHER TERRAIN. WILL NEED TO CONSIDER ISSUING A FLASH FLOOD WATCH FOR PORTIONS OF THE CWA. THE TROUGH PUSHES ACROSS THE SRN GREAT BASIN ON MONDAY AND THERE WILL BE THUNDERSTORM ACTIVITY ASSOCIATED WITH THE TROUGH AXIS AND SFC COLD FRONT AS IT TRANSITS THE STATE. BEHIND THE TROUGH/FRONT...IT WILL BEGIN TO DRY OUT AND CONVECTION WILL DIMINISH. BY TUESDAY...ONLY ISOLATED SHOWERS ARE EXPECTED AND THIS DRIER WX PATTERN SHOULD CONTINUE THROUGH THE WEEK. && .AVIATION...FOR THE 18Z PACKAGE...EXPECT SCT-NMRS SHRA/TSRA TO DEVELOP ACROSS NORTHERN ARIZONA TODAY WITH MVFR/IFR CONDITIONS LIKELY IN THE THE STRONGER STORMS. STORMS AND PRECIPITATION ARE EXPECTED TO CONTINUE OVERNIGHT WITH THE STRONGER STORMS AGAIN PRODUCING MVFR/IFR CIGS AND VSBYS. AVIATION DISCUSSION NOT UPDATED FOR AMENDMENTS. && .FIRE WEATHER...SEE FIRE WEATHER FORECAST (FWFFGZ) FOR DISCUSSION OF DAYS 1 AND 2. MONDAY THROUGH WEDNESDAY...AN EARLY SEASON LOW PRESSURE SYSTEM WILL MOVE ACROSS THE SOUTHERN GREAT BASIN. EXPECT SCATTERED SHOWERS AND THUNDERSTORMS ON MONDAY ALONG WITH SOUTHWEST WINDS OF 10 TO 20 MPH WITH GUSTS APPROACHING 30 MPH DURING THE AFTERNOON AND EVENING. ON TUESDAY AND WEDNESDAY...ONLY ISOLATED THUNDERSTORM ACTIVITY IS ANTICIPATED AT THIS TIME. && .FGZ WATCHES/WARNINGS/ADVISORIES...NONE. && PUBLIC...............DB AVIATION/FIRE WX.....41 VISIT WEATHER.GOV/FLAGSTAFF FOR NORTHERN ARIZONA WEATHER INFORMATION.
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE FLAGSTAFF AZ 1000 AM MST SAT AUG 30 2008 AZZ004>018-037>040-310700- 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- 1000 AM MST SAT AUG 30 2008 THIS HAZARDOUS WEATHER OUTLOOK IS FOR APACHE...COCONINO...NORTHERN GILA...NAVAJO...AND YAVAPAI COUNTIES IN NORTHERN ARIZONA. .DAY ONE...TODAY A VERY MOIST AND UNSTABLE AIRMASS WILL RESULT IN ANOTHER ROUND OF SHOWERS AND THUNDERSTORMS ACROSS NORTHERN ARIZONA THIS AFTERNOON AND EVENING. SOME OF THESE STORMS MAY BECOME BRIEFLY SEVERE WITH STRONG DAMAGING WINDS AND LARGE HAIL THE MAIN THREAT. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY MODERATE TO OCCASIONALLY HEAVY RAINFALL IS EXPECTED TO DEVELOP LATE SATURDAY NIGHT AND CONTINUE INTO SUNDAY ACROSS MUCH OF NORTHERN ARIZONA. WIDESPREAD RAINFALL AMOUNTS OF 1/2 TO 1 INCH ARE LIKELY WITH 1 TO 2 INCHES POSSIBLE OVER THE SOUTH AND WEST FACING SLOPES OF THE HIGHER TERRAIN. A FLASH FLOOD WATCH MAY BE REQUIRED FOR PORTIONS OF NORTHERN ARIZONA. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.
The Las Vegas radar (KESX), 174 km away, was scanning. The volume nearest the first event began at 19:17 UTC.
1 hail. Local standard time, as filed.
A thunderstorm produced one inch diameter hail southwest of Seligman near Cross Mountain.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Arizona in 2008Every state in 2008This day in weather historyWarnings in Arizona, August 2008
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: 133177.