Thunderstorms produced heavy rain in the Doney Park area of far northeast Flagstaff.
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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 Doney Park area of far northeast Flagstaff.
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 15, 9:00 AM MST, 5 hours earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE FLAGSTAFF AZ 900 AM MST SAT AUG 15 2015 .SYNOPSIS...EXPECT SCATTERED SHOWERS AND THUNDERSTORMS TO DEVELOP ONCE AGAIN TODAY. A DRYING TREND BEGINS SUNDAY AND CONTINUES WELL INTO NEXT WEEK...AS HIGH PRESSURE SHIFTS WESTWARD. TEMPERATURES WILL BE SEVERAL DEGREES ABOVE NORMAL THROUGH EARLY NEXT WEEK...WITH VERY HOT CONDITIONS AT THE LOWER ELEVATIONS. && .DISCUSSION...CURRENT FORECAST PACKAGE IS ON TRACK. BE PREPARED FOR EXTREMELY HOT TEMPERATURES IF YOU ARE HEADING INTO THE LOWER DESERT AREAS OF ARIZONA THIS WEEKEND. ENOUGH MOISTURE REMAINS TRAPPED UNDER A STRONG RIDGE CENTERED OVER EASTERN ARIZONA TO GENERATE MORE CONVECTION TODAY. MUCH OF THE ACTIVITY WILL BE LIMITED BY WARM TEMPERATURES AND SUBSIDENCE ALOFT...BUT SIMILAR TO YESTERDAY...ENOUGH INSTABILITY DOES EXIST FOR SCATTERED CONVECTION WITH MODEST VERTICAL EXTENT. BY SUNDAY AND MONDAY...THE RIDGE MOVES WEST-SOUTHWEST AND THE WARMEST TEMPERATURES ALOFT ARRIVE. THIS WILL LIMIT CONVECTION TO SINGLE CELL COVERAGE AND ANY REMAINING MOISTURE WILL BEGIN TO MIX OUT. BY TUESDAY...WEST AND THEN NORTHWEST FLOW DEVELOPS FOR THE REMAINDER OF THE WEEK AS THE RIDGE REMAINS TO OUR SOUTHWEST. THIS WILL END ANY CHANCE OF PRECIPITATION FROM TUESDAY ONWARD. TEMPERATURES WILL LIKELY STAY VERY WARM THROUGH MONDAY...BEFORE COOLING BACK TO NEAR NORMAL LEVELS THE REST OF THE WEEK. OUR LOWEST ELEVATIONS...ESPECIALLY NEAR MARICOPA COUNTY...WILL FLIRT WITH EXCESSIVE HEAT CRITERIA. AS THIS WILL NOT BE ANY DIFFERENT FROM THE LAST FEW DAYS...WE WILL CONTINUE WITHOUT A PRODUCT. && .AVIATION...FOR THE 12Z PACKAGE...GENERALLY VFR CONDITIONS ARE EXPECTED FOR THE NEXT 24 HOURS. ISOLD -SHRA EXPECTED THROUGH 18Z THEN ISOLD-SCT SHRA/TSRA...MAINLY OVER THE MOUNTAINS. CLEARING AFTER 02Z. SFC WIND GUSTS TO 35KT POSSIBLE WITH STRONGER CELLS. AVIATION DISCUSSION NOT UPDATED FOR AMENDMENTS. && .FGZ WATCHES/WARNINGS/ADVISORIES...NONE. && PUBLIC...MCCOLLUM/PETERSON AVIATION...BOHLIN/MAS FOR NORTHERN ARIZONA WEATHER INFORMATION VISIT WEATHER.GOV/FLAGSTAFF
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE FLAGSTAFF AZ 656 AM MST SAT AUG 15 2015 AZZ004>018-037>040-160615- 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- 656 AM MST SAT AUG 15 2015 THIS HAZARDOUS WEATHER OUTLOOK IS FOR APACHE...COCONINO... NORTHERN GILA...NAVAJO...AND YAVAPAI COUNTIES IN NORTHERN ARIZONA. .DAY ONE...TODAY AND TONIGHT SCATTERED SHOWERS AND THUNDERSTORMS WILL FORM OVER THE HIGHER TERRAIN BY LATE MORNING. STORMS WILL MOVE NORTHWARD INTO THE LOWER ELEVATIONS THROUGH THE AFTERNOON. STORMS ARE NOT EXPECTED TO BE STRONG TODAY...BUT MAY PRODUCE MODERATE RAIN AND GUSTY WINDS. HOT TEMPERATURES WILL CONTINUE IN THE LOWER ELEVATIONS. THE VALLEYS OF YAVAPAI COUNTY BELOW 4000 FEET MAY BRIEFLY APPROACH EXCESSIVE HEAT THRESHOLDS IN THE AFTERNOON. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY ABOVE NORMAL DAYTIME TEMPERATURES WILL PERSIST THROUGH MONDAY. THE VALLEYS OF YAVAPAI COUNTY BELOW 4000 FEET MAY BRIEFLY APPROACH EXCESSIVE HEAT THRESHOLDS EACH AFTERNOON. ISOLATED STORMS WILL CONTINUE THROUGH MONDAY...ESPECIALLY NEAR THE NEW MEXICO BORDER. COOLING TEMPERATURES ARE EXPECTED FOR THE REMAINDER OF THE WEEK AND STORM ACTIVITY WILL COME TO AN END AS DRY NORTHWEST FLOW DEVELOPS. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE FLAGSTAFF AZ 116 PM MST SAT AUG 15 2015 AZZ012-015-152045- LITTLE COLORADO RIVER VALLEY IN COCONINO COUNTY-WESTERN MOGOLLON RIM- 116 PM MST SAT AUG 15 2015 ...A STRONG THUNDERSTORM WILL AFFECT EAST CENTRAL COCONINO COUNTY... AT 114 PM MST...A STRONG THUNDERSTORM WAS 9 MILES NORTH OF ANGELL... OR 19 MILES NORTHEAST OF FLAGSTAFF...MOVING EAST AT 15 MPH. WINDS IN EXCESS OF 40 MPH AND DIME SIZE HAIL ARE POSSIBLE WITH THIS STORM. THIS STORM WILL REMAIN OVER MAINLY RURAL AREAS OF CENTRAL LITTLE COLORADO RIVER VALLEY IN COCONINO COUNTY AND EAST CENTRAL WESTERN MOGOLLON RIM COUNTIES. LAT...LON 3530 11140 3537 11142 3542 11120 3527 11119 TIME...MOT...LOC 2014Z 269DEG 14KT 3534 11132 MCCOLLUM
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE FLAGSTAFF AZ 147 PM MST SAT AUG 15 2015 AZZ012-015-152115- LITTLE COLORADO RIVER VALLEY IN COCONINO COUNTY-WESTERN MOGOLLON RIM- 147 PM MST SAT AUG 15 2015 ...A STRONG THUNDERSTORM WILL AFFECT EAST CENTRAL COCONINO COUNTY... AT 143 PM MST...A STRONG THUNDERSTORM WAS 8 MILES NORTH OF ANGELL... OR 15 MILES WEST OF LEUPP...MOVING EAST AT 10 MPH. THE STORM WILL TRAVEL ALONG INDIAN ROUTE 15. WINDS IN EXCESS OF 40 MPH AND DIME SIZE HAIL ARE POSSIBLE WITH THIS STORM. LAT...LON 3528 11140 3536 11140 3538 11121 3526 11121 TIME...MOT...LOC 2043Z 268DEG 8KT 3532 11130 MCCOLLUM
The national radar mosaic for the moment the first event began.
1 heavy rain. Local standard time, as filed.
Between one and 1.25 inches of rain fell across the Doney Park area of far northeast Flagstaff in under 50 minutes. The power was also knocked out by the storm. Wind gusts to 45 MPH and half inch hail was also reported.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Arizona in 2015Every state in 2015This day in weather historyWarnings in Arizona, August 2015
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: 600729.