Thunderstorms produced heavy rain in the Williams area.
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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.
Thunderstorms produced heavy rain in the Williams area.
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 26, 2:30 PM MST, 2 hours 50 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE FLAGSTAFF AZ 230 PM MST THU JUL 26 2007 .SYNOPSIS...A MOIST AND UNSTABLE AIR MASS WILL REMAIN ACROSS ARIZONA FOR THE NEXT SEVERAL DAYS. EXPECT AFTERNOON AND EVENING SHOWERS AND THUNDERSTORMS TO DEVELOP EACH DAY WELL INTO NEXT WEEK. CLOUDS AND PRECIPITATION WILL KEEP AFTERNOON HIGH TEMPERATURES SLIGHTLY BELOW NORMAL. && .DISCUSSION...CONVECTION A LITTLE SLOWER TO GET GOING TODAY THAN YESTERDAY...LIKELY DUE TO MORE STABLE LAPSE RATES IN THE MID-LEVELS. STORMS THAT ARE OCCURRING ARE HEAVY RAINERS AS EXPECTED DUE TO THE ABOVE NORMAL MOISTURE VALUES AND VERY WEAK STEERING FLOW. IN NM...WHERE LAPSE RATES ARE STEEPER...CONVECTION IS GOING WELL...AND MODELS DEPICT THIS CONVECTION AND RESIDUAL MOISTURE TO MOVE INTO EASTERN SECTIONS OF THE FORECAST AREA THIS EVENING. AS THE MID-LEVEL CIRCULATION CENTER STEERING THESE STORMS MOVES SOUTHWESTWARD ACROSS NORTHERN AZ TONIGHT...AIRMASS REMAINS UNSTABLE AND EXPECT CONVECTION AND CLOUDS TO LINGER WELL INTO THE EVENING HOURS. CIRCULATION CENTER SETS UP OVER NORTHWEST AZ FRIDAY WITH INCREASING NORTHEASTERLY STEERING FLOW FOR FRIDAY AND SATURDAY. THIS TYPICALLY TARGETS AREAS SOUTH OF THE RIM AND CHUSKAS/BLACK MESA REGIONS WITH AN INCREASED CHANCE OF THUNDERSTORM ACTIVITY MOVING INTO THE LOWER DESERTS. MODELS INDICATING THAT SATURDAY MAY BE THE BIGGER DAY FOR COVERAGE...WITH STEEP LAPSE RATES...AMPLE MOISTURE...AND 15 KT OF STEERING FLOW FROM THE NORTHEAST. BY SUNDAY...SLIGHTLY LOWER THETA-E VALUES ADVECT IN FROM THE NORTH AND EAST...WHICH WOULD START TO DECREASE PRECIPITATION CHANCES THERE...WHILE AREAS ALONG THE RIM SOUTHWARD STILL LOOK ACTIVE. MODELS SUGGEST A DOWNWARD TREND TO PRECIPITATION BY MIDWEEK...BUT WITH THE RANDOMNESS OF LOW-LEVEL MOISTURE INFUSIONS FROM CONVECTIVE OUTFLOWS AND POSSIBLE MOISTURE FROM THE GULF OF CALIFORNIA...WILL NOT MAKE MUCH OF THIS DECREASING POTENTIAL FOR NOW. && .AVIATION...FOR THE 00Z PACKAGE...ISOLATED TO SCATTERED THUNDERSTORMS WILL CONTINUE INTO THE EARLY EVENING HOURS WITH MVFR CONDITIONS ACCOMPANYING THE STRONGER STORMS. THE MAIN THREAT WITH STORMS WILL BE REDUCED VISIBILITY IN HEAVY RAIN. OTHERWISE...EXPECT AREAS WITH CEILINGS OF 3 TO 5 KFT AGL WITH STORM COVERAGE GENERALLY DECREASING AFTER 03Z. AREAS OF CLOUDS AND LIGHT SHOWERS WILL PERSIST THROUGH THE NIGHT. ANOTHER ROUND OF THUNDERSTORMS IS ANTICIPATED FOR FRIDAY AFTERNOON. AVIATION DISCUSSION NOT UPDATED FOR AMENDMENTS. && .FGZ WATCHES/WARNINGS/ADVISORIES...NONE. && STAUDENMAIER/MCCOLLUM
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE FLAGSTAFF AZ 930 AM MST THU JUL 26 2007 AZZ004>018-037>040-270700- 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- 930 AM MST THU JUL 26 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR APACHE...COCONINO...NORTHERN GILA...NAVAJO...AND YAVAPAI COUNTIES IN NORTHERN ARIZONA. .DAY ONE...TODAY DEEP MOISTURE CONTINUES TO RESIDE OVER NORTHERN ARIZONA TODAY. SCATTERED TO NUMEROUS THUNDERSTORMS WILL ONCE AGAIN DEVELOP FIRST OVER THE HIGHER TERRAIN OF THE WHITE MOUNTAINS...MOGOLLON RIM.... AND YAVAPAI COUNTY MOUNTAINS BY MID MORNING...AND MOVE SLOWLY TOWARD THE WEST AND NORTHWEST DURING THE AFTERNOON HOURS. DUE TO THE WEAK WIND FIELD ALOFT...STORMS WILL OCCASIONALLY BECOME STATIONARY... AND WITH THE AMOUNT OF MOISTURE IN THE ATMOSPHERE....PRODUCE VERY HEAVY RAINFALL RATES ALONG WITH THE POTENTIAL FOR LOCALIZED FLOODING. THESE STORMS ARE LIKELY TO CONTINUE INTO THE EVENING HOURS BEFORE DIMINISHING. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY MODELS SUGGEST ADDITIONAL MOISTURE AND INSTABILITY FRIDAY AND SATURDAY WITH INCREASING COVERAGE OF THUNDERSTORMS ALONG WITH STORM MOTION THAT MORE FAVORS MOVEMENT INTO THE LOWER ELEVATIONS OF THE FORECAST AREA...ESPECIALLY YAVAPAI AND NORTHERN GILA COUNTIES. MOISTURE CONTINUES OVER THE AREA INTO NEXT WEEK FOR A CONTINUATION OF DAILY MAINLY SCATTERED LATE MORNING THROUGH EVENING SHOWERS AND THUNDERSTORMS THROUGH THE ENTIRE PERIOD. SOME OF THE STORMS MAY PRODUCE LOCALLY HEAVY RAINFALL AND HAIL. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES. STAUDENMAIER
The Flagstaff radar (KFSX), 117 km away, was scanning. The volume nearest the first event began at 00:21 UTC.
1 flash flood. Local standard time, as filed.
Heavy rain from thunderstorms caused flooding in the Williams area. Two feet of water covered Country Club Road at the railroad underpass.
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, July 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: 52501.