Heavy rain from thunderstorms produced flash flooding near Greer and Alpine.
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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 thunderstorms produced flash flooding near Greer and Alpine.
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, 10:00 AM MST, 1 hour 45 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE FLAGSTAFF AZ 1000 AM MST TUE JUL 26 2011 .SYNOPSIS...A MOIST AND UNSTABLE AIRMASS WILL REMAIN ACROSS THE REGION FOR THE NEXT SEVERAL DAYS BRINGING DAILY SHOWERS AND THUNDERSTORMS TO NORTHERN ARIZONA. && .DISCUSSION...A MOIST AIRMASS IS IN PLACE ACROSS THE NORTHLAND THIS MORNING...AS EVIDENCED BY THE 1.2 INCHES OF PRECIPITABLE WATER IN THIS MORNING'S 12Z SOUNDING AT KFGZ. COCONINO COUNTY REMAINS UNDER ABUNDANT CLOUD COVER AND MAY SEE A LATER START TO ENHANCED CONVECTION DUE TO A DELAYED START TO SURFACE HEATING. STRONGER STORMS MAY FORM EARLIER IN NAVAJO AND APACHE COUNTIES WHICH HAVE SEEN MORE SUNSHINE THUS FAR. CURRENT FORECAST REFLECTS ANTICIPATED CONDITIONS WELL AT THIS TIME. && .PREV DISCUSSION /330 AM MST/...ABUNDANT MOISTURE RESIDES OVER THE REGION THIS MORNING. PRECIPITABLE WATER VALUES NEAR OR OVER ONE INCH...AND SURFACE DEWPOINTS ARE IN THE 50S AND LOW 60S. A MID-LEVEL DISTURBANCE LOCATED ACROSS WEST-CENTRAL AZ WILL MOVE SLOWLY NORTH TO NEAR THE UT/AZ BORDER BY EARLY AFTERNOON...AND MAY BECOME A FOCUS FOR CONVECTION LATER TODAY IF SUFFICIENT SFC HEATING OCCURS. OVERALL INSTABILITY DOES NOT LOOK TOO IMPRESSIVE FOR MOST AREAS...SO EXPECTING LITTLE IF ANY SEVERE WEATHER TODAY. HOWEVER...WITH THE DEEP MOISTURE...STORMS THAT DEVELOP WILL BE EFFICIENT RAINFALL PRODUCERS. FOR THIS REASON...WE WILL ISSUE A FLASH FLOOD WATCH FOR AREAS ALONG/NORTH OF THE MOGOLLON RIM AND WHITE MTNS TODAY. THIS INCLUDES THE RECENTLY BURNED AREAS. A DRYING TREND CAN BE EXPECTED WEDNESDAY AND THURSDAY FOR THE WESTERN PORTION OF AZ...BUT MOISTURE WILL LIKELY REMAIN IN PLACE ACROSS THE EASTERN PART OF THE STATE. CURRENT MODEL TRENDS INDICATE THAT MOISTURE WILL SURGE BACK OVER ALL OF NORTHERN ARIZONA FRIDAY AND THE WEEKEND FOR AN UPSWING IN THUNDERSTORM ACTIVITY. && .AVIATION...FOR THE 18Z PACKAGE...DEEP MOISTURE ACROSS NORTHERN ARIZONA TODAY WILL PRODUCE SCATTERED TO WIDESPREAD HEAVY SHOWERS AND THUNDERSTORMS FROM 17Z TO 04Z. COVERAGE WILL DECREASE AFTER 04Z WITH ISOLATED TO SCATTERED THUNDERSTORMS FORECAST OVERNIGHT. EXPECT ERRATIC AND GUSTY WINDS WITH MVFR TO LOCAL IFR CONDITIONS NEAR HEAVY SHOWERS AND STORMS. AVIATION DISCUSSION NOT UPDATED FOR AMENDMENTS. && .FGZ WATCHES/WARNINGS/ADVISORIES...FLASH FLOOD WATCH UNTIL 8 PM MST THIS EVENING FOR ZONES AZZ004>007-009>017-039-040. && PUBLIC..................KD/JJ AVIATION................MCS FOR NORTHERN ARIZONA WEATHER INFORMATION VISIT WEATHER.GOV/FLAGSTAFF.
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE FLAGSTAFF AZ 349 AM MST TUE JUL 26 2011 AZZ004>018-037>040-270300- KAIBAB PLATEAU-MARBLE AND GLEN CANYONS-GRAND CANYON COUNTRY- COCONINO PLATEAU-YAVAPAI COUNTY MOUNTAINS- NORTHEAST PLATEAUS AND MESAS HWY 264 NORTHWARD-CHINLE VALLEY- CHUSKA MOUNTAINS AND DEFIANCE PLATEAU- LITTLE COLORADO RIVER VALLEY IN COCONINO COUNTY- LITTLE COLORADO RIVER VALLEY IN NAVAJO COUNTY- LITTLE COLORADO RIVER VALLEY IN APACHE COUNTY- WESTERN MOGOLLON RIM-EASTERN MOGOLLON RIM-WHITE MOUNTAINS- NORTHERN GILA COUNTY-YAVAPAI COUNTY VALLEYS AND BASINS- OAK CREEK AND SYCAMORE CANYONS-BLACK MESA AREA- NORTHEAST PLATEAUS AND MESAS SOUTH OF HWY 264- 349 AM MST TUE JUL 26 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EAST CENTRAL ARIZONA...NORTH CENTRAL ARIZONA...NORTHEAST ARIZONA AND WEST CENTRAL ARIZONA. .DAY ONE...TODAY AND TONIGHT AND TONIGHT A MOIST AND UNSTABLE AIR MASS ACROSS THE REGION WILL BRING ANOTHER ROUND OF SHOWERS AND THUNDERSTORMS TO NORTHERN ARIZONA TODAY. SOME STORMS MAY PRODUCE HEAVY RAINFALL RESULTING IN LOCALIZED FLOODING. A FLASH FLOOD WATCH IS IN EFFECT FROM 10 AM MST UNTIL 8 PM MST FROM THE MOGOLLON RIM AND WHITE MOUNTAINS NORTHWARD TO THE UTAH BORDER. SOME SMALL HAIL MAY ALSO ACCOMPANY THE STRONGER STORMS. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY SCATTERED AFTERNOON AND EVENING THUNDERSTORMS ARE EXPECTED EACH DAY. A SLIGHT DRYING TREND IS FORECAST FOR WESTERN ARIZONA WEDNESDAY AND THURSDAY...WITH MOISTURE PUSHING BACK INTO THIS REGION BY FRIDAY AND THE WEEKEND. .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
1027 AM MST TUE JUL 26 2011
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0210 PM HEAVY RAIN WILLIAMS 35.26N 112.17W
07/25/2011 M0.53 INCH COCONINO AZ TRAINED SPOTTER
&&
EVENT NUMBER FGZ1100205
COThe Flagstaff radar (KFSX), 206 km away, was scanning. The volume nearest the first event began at 18:44 UTC.
2 flash flood. Local standard time, as filed.
Apache Country Road 2153 (unmaintained) near Alpine flooded and was impassable.
Apache Country Road 1126 near Greer flooded. There was over an inch of standing water in the Greer Fire Station.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Arizona in 2011Every state in 2011This day in weather historyWarnings in Arizona, July 2011
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: 335837, 335841.