A severe thunderstorm produced ping pong sized hail and flash flooding in Castle Hot Springs.
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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 ping pong sized hail and flash flooding in Castle Hot Springs.
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 22, 9:00 AM MST, 4 hours 30 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE FLAGSTAFF AZ 900 AM MST SAT SEP 22 2007 .SYNOPSIS...A STORM SYSTEM WILL MOVE ACROSS NORTHERN ARIZONA TODAY AND SUNDAY. AS A RESULT...EXPECT AN INCREASING THREAT OF SHOWERS AND THUNDERSTORMS ALONG WITH BREEZY CONDITIONS TO AFFECT MUCH OF NORTHERN ARIZONA BY THIS AFTERNOON. A FEW STORMS MAY ALSO HAVE HAIL AND STRONG WINDS. COOLER TEMPERATURES WILL ALSO ACCOMPANY THIS STORM THROUGH SUNDAY. DRIER AND WARMER WEATHER WILL RETURN FOR EARLY NEXT WEEK. && .DISCUSSION...CLOSED LOW REMAINS OFF THE SOUTHERN CA COAST. MODELS CONTINUE TO MOVE THIS FEATURE INTO SOUTHERN NV BY THIS AFTERNOON AND EVENING...WITH THE DYNAMICS OF THE SYSTEM MOVING ACROSS NORTHERN ARIZONA TODAY AND OVERNIGHT IN THE FORM OF A COLD FRONT. RADAR INDICATES SHOWERS AND EMBEDDED THUNDERSTORMS OVER ALL OF YAVAPAI AND WESTERN COCONINO COUNTIES MOVING EASTWARD. STORM MOTION IS FAST...AT AROUND 35 TO 40 MPH. KFGZ SOUNDING SHOWED MARGINAL INSTABILITY PROFILE WITH SIGNIFICANT WIND SHEAR AND HELICITY TO SUPPORT ISOLATED ORGANIZED STORMS WITH HAIL ...STRONG WINDS...AND THE POSSIBILITY OF AN ISOLATED TORNADO CANT BE RULED OUT. IN ADDITION...HEAVY RAINFALL WILL ACCOMPANY SOME OF THE STORMS...WITH STORMS REPEATEDLY MOVING OVER THE SAME AREAS...SOME LOCATIONS MAY SEE OVER AN INCH OF RAINFALL...ESPECIALLY WEST PORTIONS TODAY...AND EASTERN PORTIONS OF THE FORECAST AREA THIS EVENING. MODELS INDICATE THAT A WAVE WILL DEVELOP ALONG THE FRONT THIS AFTERNOON SOUTH OF THE AREA AND RIDE NORTHWARD ALONG THE FRONT THIS EVENING TO INCREASE PRECIPITATION OVER EASTERN SECTIONS OF THE FORECAST AREA OVERNIGHT. THE FRONT SHOULD PUSH INTO NM TOWARD MORNING...WITH SCATTERED SHOWERS BEHIND THE FRONT LINGERING INTO SUNDAY MORNING BEFORE MORE STABLE AIR MOVES INTO THE REGION FROM THE WEST. CURRENT FORECAST HAS MAIN DETAILS HANDLED WELL...WILL REFRESH THE TODAY PERIOD FOR CURRENT TRENDS. .PREVIOUS DISCUSSION FROM 0230 AM...A CLOSED-LOW IN THE MID TO UPPER LEVELS REMAINED CENTERED JUST OFF THE SOUTHERN CALIFORNIA COAST THIS MORNING. OVER THE NEXT 24 HOURS THE SOUTHERN CALIFORNIA LOW WILL LIFT TO THE NORTHEAST IN RESPONSE TO A VIGOROUS LOW MOVING ACROSS THE PACIFIC NORTHWEST. FOR TODAY...MOISTURE CONTINUES TO BE ADVECTED NORTHWARD BY STRONG SOUTHERLY FLOW. AS THE DAY PROGRESSES UPWARD MOTION AND COOLING ALOFT IN ADVANCE OF THE LOW CENTER WILL BEGIN TO DESTABILIZE THE MOIST AIR MASS. EXPECT THAT BY THE AFTERNOON MUCH OF THE AREA WEST OF A PAGE/WINSLOW/PAYSON LINE WILL SEE SHOWERS AND THUNDERSTORMS. THE HEAVIEST RAINFALL WILL BE LOCATED FROM YAVAPAI COUNTY INTO THE WESTERN MOGOLLON RIM. IN ADDITION...WITH 25 TO 40 MPH LOW LEVEL FLOW SOUTH FACING SLOPES WILL SEE ADDITIONAL RAINFALL ACCUMULATIONS DUE TO UPSLOPE LIFT. OVERNIGHT...IN ADDITION TO LARGE SCALE UPWARD MOTION AND COOLING A WEAK COLD FRONT WILL PUSH ACROSS NORTHERN ARIZONA FROM WEST TO EAST. THE STRONGEST SOUTHERLY WINDS AND UPWARD MOTION WILL BE LOCATED ALONG THE FRONT SO EXPECT THE HEAVIEST RAINFALL TO OCCUR TONIGHT. LOCALIZED RAINFALL ACCUMULATIONS APPROACHING 2 INCHES ALONG THE WESTERN MOGOLLON RIM AND HIGHER MOUNTAINS OF YAVAPAI COUNTY ARE POSSIBLE BEFORE THE FRONT PASSES TONIGHT. OTHERWISE...EXPECT COOLER DAYTIME TEMPERATURES...MAINLY CLOUDY SKIES AND SOUTH TO SOUTHWEST WINDS OF 15 TO 25 MPH. FOR SUNDAY...THE CURRENT TROUGH FILLS AND HEADS EASTWARD. A SECONDARY WEATHER DISTURBANCE MOVING THROUGH THE GENERAL FLOW WILL LEAD TO A CONTINUED CHANCE OF SHOWERS ON SUNDAY. COOLER DAYTIME TEMPERATURES AND BREEZY CONDITIONS WILL CONTINUE. FOR MONDAY AND MUCH OF NEXT WEEK IT APPEARS WARMER DAYTIME TEMPERATURES AND MAINLY CLEAR SKIES ARE IN STORE. THE ONLY EXCEPTION WILL BE A SLIGHT CHANCE OF SHOWERS AND PARTLY CLOUDY SKIES ALONG THE ARIZONA/NEW MEXICO BORDER. && .AVIATION...FOR THE 18Z PACKAGE...EXPECT SCT-NMRS SHRA AND TSRA WITH CIGS AOB 4K FT AGL MAINLY WEST OF A LINE FROM KPGA-KINW-KPAN THROUGH 21Z...THEN SPREADING EASTWARD TOWARD THE NEW MEXICO BORDER THROUGH THE EVENING AND OVERNIGHT. PRECIPITATION SHOULD TAPER OFF AFTER 05Z OVER MUCH OF COCONINO AND YAVAPAI COUNTIES...BUT AREAS OF MVFR CEILINGS WILL BE POSSIBLE THROUGH 13Z...ESPECIALLY OVER THE HIGHER TERRAIN. WINDS WILL GENERALLY BE SOUTHERLY AT 10 TO 20 KT WITH GUSTS TO 35 KT THROUGH 02Z...WITH HIGHER GUSTS IN THE SHOWERS AND STORMS. AVIATION DISCUSSION NOT UPDATED FOR AMENDMENTS. && .FGZ WATCHES/WARNINGS/ADVISORIES...NONE. && STAUDENMAIER/JJ
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE FLAGSTAFF AZ 830 AM MST SAT SEP 22 2007 AZZ004>018-037>040-230300- 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- 830 AM MST SAT SEP 22 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR APACHE...COCONINO...NORTHERN GILA...NAVAJO...AND YAVAPAI COUNTIES IN NORTHERN ARIZONA. .DAY ONE...TODAY A LOW PRESSURE SYSTEM OFF THE COAST OF SOUTHERN CALIFORNIA WILL MOVE NORTHEASTWARD INTO SOUTHERN NEVADA TODAY. THIS WILL BRING PERIODS OF RAIN WITH EMBEDDED THUNDERSTORMS TO MUCH OF NORTHERN ARIZONA. RAIN AND THUNDERSTORMS HAVE ALREADY DEVELOPED IN YAVAPAI AND WESTERN COCONINO COUNTIES AND WILL SPREAD EASTWARD THROUGH THE DAY... REACHING THE EASTERN PORTIONS OF NORTHERN ARIZONA BY THIS EVENING. HEAVY RAIN...BRIEF GUSTY WINDS...AND SMALL HAIL WILL BE THE MAIN THREAT FROM THUNDERSTORMS TODAY AND THIS EVENING...HOWEVER THE POSSIBILITY OF ISOLATED SEVERE THUNDERSTORMS WITH LARGE HAIL...DAMAGING WINDS...AND EVEN A TORNADO CANNOT BE RULED OUT. IN ADDITION TO THE RAIN...SOUTHWEST WINDS WILL SLOWLY INCREASE TO 15 TO 20 MPH WITH GUSTS TO AROUND 35 MPH BY THIS AFTERNOON. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.
The Phoenix radar (KIWA), 101 km away, was scanning. The volume nearest the first event began at 20:31 UTC.
1 flash flood, 1 hail. Local standard time, as filed.
Heavy rain, up to 0.91 inches in 15 minutes, flooded portion of a home, hot spring pools, and yard.
Hail up to the size of ping pong balls (1 1/2 inches in diameter) damaged a truck and punched holes in window screens.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Arizona in 2007Every state in 2007This day in weather historyWarnings in Arizona, September 2007
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: 60278, 60279.