A thunderstorm produced heavy rain and hail in Cottonwood.
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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 thunderstorm produced heavy rain and hail in Cottonwood.
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 10, 3:51 PM MST, 1 hour 9 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE FLAGSTAFF AZ 351 PM MST SUN AUG 10 2014 .SYNOPSIS... EXPECT AN INCREASE IN COVERAGE AND INTENSITY OF SHOWER AND THUNDERSTORM ACTIVITY OVER NORTHERN ARIZONA AS MOISTURE INCREASES THROUGH MIDWEEK. FOLLOWING PASSAGE OF AN UPPER LEVEL DISTURBANCE...ANOTHER DOWNTURN IN STORM ACTIVITY IS FORECAST BY NEXT WEEKEND. && .DISCUSSION... AS ANTICIPATED...IT HAS TAKEN A WHILE FOR STORM ACTIVITY TO GET GOING THIS AFTERNOON. CURRENTLY...SCATTERED STORMS ARE MOVING OFF THE RIM INTO NORTHERN GILA COUNTY AS WELL AS OVER THE COCONINO PLATEAU WHILE MORE ISOLATED STORMS EXIST ELSEWHERE. SOME OF THIS ACTIVITY MAY PERSIST OR EVEN INTENSIFY INTO THE EARLY EVENING HOURS. MOISTURE WILL BE ON THE INCREASE OVER NORTHERN ARIZONA EARLY THIS WEEK...WITH PRECIPITABLE WATER GOING UP MARKEDLY FROM MONDAY INTO TUESDAY. WITH THIS MOIST ATMOSPHERE...EXPECT A GREATER TENDENCY FOR STORMS TO PRODUCE HEAVY RAIN AND LOCALIZED FLOODING BUT ALSO EXPECT A LARGE AMOUNT OF CLOUD COVER ON TUESDAY AND WEDNESDAY. THIS CLOUD COVER COULD KEEP INSTABILITY LOW...RESULTING IN MORE LONG- DURATION LOW INTENSITY PRECIPITATION. HIGH MOISTURE VALUES MAY HANG AROUND ON THURSDAY AS WELL BEFORE DECREASING. ENSEMBLE MEAN PRECIPITABLE WATER VALUES INDICATE A SUBSTANTIAL MOISTURE DECREASE BY NEXT WEEKEND. && .AVIATION... FOR THE 00Z PACKAGE...SCATTERED SHOWERS AND THUNDERSTORMS WILL DIMINISH AFTER 03Z. SCATTERED THUNDERSTORM ACTIVITY WILL REDEVELOP ON MONDAY AFTER 18Z STARTING ALONG THE HIGHER TERRAIN AREAS THEN MOVING DOWN INTO THE VALLEYS BY MID TO LATE AFTERNOON. THE STRONGEST STORMS WILL HAVE MVFR VSBY AND ERRATIC SURFACE WIND GUSTS UP TO 60 MPH. SEVERAL FOREST FIRES NEAR WILLIAMS AND THE GRAND CANYON MAY PRODUCE SMALL AREAS OF OVERNIGHT MVFR/IFR VSBY IN SMOKE. AVIATION DISCUSSION NOT UPDATED FOR AMENDMENTS. && .FGZ WATCHES/WARNINGS/ADVISORIES...NONE. && PUBLIC.........AT AVIATION.......BOHLIN FOR NORTHERN ARIZONA WEATHER INFORMATION VISIT WEATHER.GOV/FLAGSTAFF
The national radar mosaic for the moment the first event began.
1 heavy rain. Local standard time, as filed.
Heavy rain caused street flooding in Cottonwood and one street (Aspen) was closed due to the flooding.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Arizona in 2014Every state in 2014This day in weather historyWarnings in Arizona, August 2014
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: 539424.