A thunderstorm produced heavy rain with street flooding, high winds, and damaging lightning.
Every event with a place to put it. Tap one for its entry below.
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 heavy rain with street flooding, high winds, and damaging lightning.
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 2, 2:30 PM MST, 5 hours 15 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE FLAGSTAFF AZ 230 PM MST SUN SEP 02 2007 .SYNOPSIS...HIGH PRESSURE AND MONSOON MOISTURE WILL CONTINUE TO BRING A CHANCE OF THUNDERSTORMS TO NORTHERN ARIZONA OVER THE NEXT WEEK. OTHERWISE...ABOVE NORMAL TEMPERATURES WILL CONTINUE UNTIL MONDAY THEN LOWER TO NEAR NORMAL LEVELS BY WEDNESDAY OR THURSDAY AS HIGH PRESSURE WEAKENS AND INCREASING MOISTURE MOVES IN FROM THE SOUTH. && .DISCUSSION...THE AXIS OF AN ELONGATED...DEEP LAYER RIDGE STRETCHED FROM SOUTHERN CALIFORNIA TO SOUTHERN UTAH THIS AFTERNOON. AS A RESULT...NORTHERN ARIZONA REMAINED UNDER NORTH TO NORTHEAST FLOW ALOFT. ISOLATED STORMS HAD DEVELOPED ACROSS THE MOGOLLON RIM AND WERE BEGINNING TO MOVE SOUTHWARD DURING THE MID AFTERNOON HOURS. THERE IS PLENTY OF MOISTURE TO THE SOUTH OF THE MOGOLLON RIM AND ISOLATED STORMS THAT PUSH SOUTHWARD INTO YAVAPAI OR GILA COUNTIES WILL HAVE THE POTENTIAL TO BECOME SEVERE. DUE TO THE DEEP AND HOT BOUNDARY LAYER...WIND GUSTS IN EXCESS OF 60 MPH WILL BE THE MOST LIKELY THREAT WITH THE STRONGEST STORMS. FOR TONIGHT...WITH NORTHEAST FLOW...OUTFLOW BOUNDARIES FROM THUNDERSTORMS IN COLORADO COULD MOVE ACROSS NORTHEAST ARIZONA WITH ISOLATED STORMS POSSIBLE TONIGHT. AS A RESULT WILL BE CARRYING OVERNIGHT POPS SOMEWHAT HIGHER THAN CLIMATOLOGICAL VALUES. FOR MONDAY AND TUESDAY...NOT MUCH CHANGE IN THE PATTERN AS THE CURRENT DEEP-LAYER HIGH PRESSURE SYSTEM WOBBLES AROUND THE SAME GENERAL AREA. THE POTENTIAL FOR STRONG THUNDERSTORMS TO MOVE SOUTHWARD OFF THE RIM AND INTO THE LOWER DESERTS WILL CONTINUE. NORTHEAST FLOW WILL CONTINUE TO DIRECT NIGHTTIME OUTFLOW BOUNDARIES INTO NORTHEAST ARIZONA WITH A THREAT FOR NOCTURNAL THUNDERSTORMS. FOR THE REMAINDER OF THE WEEK...THE PATTERN BECOMES COMPLICATED. MOISTURE WILL LINGER OVER ARIZONA WITH AN INTRIGUING INTERACTION BETWEEN THE CURRENT HIGH PRESSURE SYSTEM...A TROUGH FROM THE NORTH AND THE POTENTIAL INPUT OF DEEP MOISTURE FROM THE TROPICS. THE NET RESULT WILL BE THAT THE CHANCE OF SHOWERS AND STORMS WILL CONTINUE THROUGH THE END OF THE WEEK WITH THE POTENTIAL FOR SOME VERY WET DAYS LATE IN THE WEEK. MCCOLLUM && .AVIATION...FOR THE 00Z PACKAGE...WIDELY SCATTERED RAINSHOWERS AND THUNDERSTORMS WHICH FORMED OVER HIGHER TERRAIN EARLIER TODAY WILL CONTINUE TO DRIFT SOUTHWESTWARD. EXPECT ONLY ISOLATED MVFR CONDITIONS ASSOCIATED WITH THE STRONGER STORMS. CONVECTION SHOULD WIND DOWN AFTER 03Z. RESIDUAL CLOUDINESS WILL DISSIPATE GRADUALLY THROUGH THE NIGHT. AVIATION DISCUSSION NOT UPDATED FOR AMENDMENTS. HOWARD && .FGZ WATCHES/WARNINGS/ADVISORIES...NONE. &&
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE FLAGSTAFF AZ 1000 AM MST SUN SEP 2 2007 AZZ004>018-037>040-030700- 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 SUN SEP 2 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR APACHE...COCONINO...NORTHERN GILA...NAVAJO...AND YAVAPAI COUNTIES IN NORTHERN ARIZONA. .DAY ONE...TODAY EXPECT ANOTHER ROUND OF ISOLATED TO SCATTERED THUNDERSTORMS. BY THIS AFTERNOON NORTHEAST FLOW ALOFT WILL PUSH THUNDERSTORMS THAT FORM OVER THE MOGOLLON RIM AND WHITE MOUNTAINS SOUTHWARD INTO GILA AND YAVAPAI COUNTIES. THE POTENTIAL IS FOR ISOLATED STRONG STORMS TO PRODUCE WIND GUSTS OF 60 MPH WITH LOCAL RAINFALL ACCUMULATIONS IN EXCESS OF 2 INCHES. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY FROM WEDNESDAY THROUGH THE END OF THE WEEK...A COMPLICATED INTERACTION BETWEEN MOISTURE FROM THE SOUTH AND A LOW PRESSURE SYSTEM TO THE NORTH COULD RESULT IN SOME VERY WET DAYS. STAY TUNED FOR DEVELOPMENTS CONCERNING THE END OF THE WEEK SYSTEM. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
612 PM MST SUN SEP 02 2007
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0330 PM TSTM WND DMG SELIGMAN 35.33N 112.88W
09/02/2007 YAVAPAI AZ CO-OP OBSERVER
TREE UPROOTED AND POWER POLE BROKEN. WINDOW BROKEN OUT OF
GROCERY STORE.
&&
JJThe Flagstaff radar (KFSX), 68 km away, was scanning. The volume nearest the first event began at 02:43 UTC.
1 lightning. Local standard time, as filed.
A thunderstorm in Winslow produced lightning that blew out a transformer and knocked out power. The storm also produced high winds, local street flooding, and small hail.
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: 60275.