Thunderstorms produced heavy rain and flash flooding north of St Johns.
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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 and flash flooding north of St Johns.
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 24, 3:27 PM MST, 3 hours 3 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE FLAGSTAFF AZ 327 PM MST SAT AUG 24 2013 .SYNOPSIS... TROPICAL MOISTURE WILL INCREASE ACROSS ARIZONA INTO EARLY NEXT WEEK...RESULTING IN WIDESPREAD AND FREQUENT SHOWERS AND THUNDERSTORMS. THE HEAVIEST RAINFALL IS ANTICIPATED ON SUNDAY...AND A FLASH FLOOD WATCH IS IN EFFECT FOR WESTERN ARIZONA. && .DISCUSSION... A STRONG GULF MOISTURE SURGE IS UNDERWAY AND WILL CONTINUE THROUGH EARLY NEXT WEEK. WHILE INSTABILITY IS LIKELY TO REMAIN MODEST OVER THE NORTHLAND...SOME LOW LEVEL SHEAR WILL HELP IN STORM GENERATION AND STRENGTHENING...ESPECIALLY FOR SUNDAY. TO ACCOUNT FOR POTENTIAL AREAS OF WIDESPREAD AND OCCASIONALLY HEAVY PRECIPITATION...A FLASH FLOOD WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH SUNDAY EVENING ACROSS YAVAPAI COUNTY AND MUCH OF COCONINO COUNTY. CURRENTLY...ONLY WIDELY SCATTERED THUNDERSTORMS ARE OCCURRING ACROSS NORTHERN AZ THIS AFTERNOON. EXPECT THESE TO INCREASE THROUGH THE LATE AFTERNOON AND EVENING...HOWEVER...AS SHOWERS DURING THE NEXT FEW DAYS ARE NOT LIKELY TO BE SO DIURNALLY DRIVEN AS TYPICAL FOR THIS TIME OF YEAR. EXPECTING A DOWNWARD TREND IN STORM ACTIVITY FROM AROUND TUESDAY THROUGH THE END OF THE 7-DAY FORECAST PERIOD. && .AVIATION... FOR THE 00Z PACKAGE...SCATTERED TO NUMEROUS SHOWERS AND THUNDERSTORMS ARE FORECAST OVER THE NEXT 24 HOURS. MOSTLY VFR CONDITIONS WILL QUICKLY TURN TO IFR AFTER SUN 07Z...CLOUD CEILINGS WILL DROP BECOMING OVERCAST WITH IFR AND LIFR CONDITIONS FORECAST AT MOST TAF SITES. PATCHY FOG WILL ALSO DEVELOP IN THE EARLY MORNING HOURS ALONG THE HIGHER ELEVATIONS OF NORTHWESTERN ARIZONA. AVIATION DISCUSSION NOT UPDATED FOR AMENDMENTS. && .FGZ WATCHES/WARNINGS/ADVISORIES... FLASH FLOOD WATCH FROM LATE TONIGHT THROUGH SUNDAY EVENING FOR AZZ004-006>008-015-037-038-104-106>108-115-137-138. && PUBLIC.........KD AVIATION.......BOHLIN FOR NORTHERN ARIZONA WEATHER INFORMATION VISIT WEATHER.GOV/FLAGSTAFF
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE FLAGSTAFF AZ 610 AM MST SAT AUG 24 2013 AZZ004>018-037>040-250700- 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- 610 AM MST SAT AUG 24 2013 THIS HAZARDOUS WEATHER OUTLOOK IS FOR APACHE...COCONINO...NORTHERN GILA...NAVAJO...AND YAVAPAI COUNTIES IN NORTHERN ARIZONA. .DAY ONE...TODAY DEEP TROPICAL MOISTURE WILL PUSH NORTHWARD ACROSS OUR AREA TODAY. SHOWER AND THUNDERSTORM ACTIVITY WILL INCREASE AS A RESULT. STRONG STORMS ARE ALREADY ONGOING IN SOUTHWEST YAVAPAI COUNTY...WITH SOME FLOODING AS A RESULT. THE MOST ACTIVE AREAS TODAY WILL LIKELY BE PORTIONS OF NORTHERN GILA...YAVAPAI AND COCONINO COUNTIES. COOLER AND CLOUDIER CONDITIONS TO THE EAST WILL PREVENT STRONGER STORMS FROM FORMING. VERY HEAVY RAINFALL IS THE PRIMARY THREAT TODAY. SOME STORMS MAY PRODUCE HAIL...ALTHOUGH MOST HAIL WILL BE ON THE SMALLER SIDE. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY MOISTURE WILL CONTINUE TO INCREASE TONIGHT AND SUNDAY...WITH A WEATHER DISTURBANCE ON SUNDAY AIDING IN HEAVY RAIN DEVELOPMENT. A FLASH FLOOD WATCH HAS BEEN ISSUED FOR MUCH OF COCONINO AND YAVAPAI COUNTIES FOR SUNDAY AS A RESULT. HEAVY RAINS WILL CONTINUE MONDAY AND POSSIBLY TUESDAY...BEFORE A SLOW DRYING TREND DEVELOPS FOR THE REMAINDER OF NEXT WEEK. .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 602 PM MST SAT AUG 24 2013 AZZ004-005-250130- COCONINO AZ- 602 PM MST SAT AUG 24 2013 THE NATIONAL WEATHER SERVICE IN FLAGSTAFF HAS ISSUED A SIGNIFICANT WEATHER ADVISORY FOR... NORTH CENTRAL COCONINO COUNTY IN NORTH CENTRAL ARIZONA UNTIL 630 PM MST AT 555 PM MST...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A STRONG THUNDERSTORM 13 MILES NORTHWEST OF HOUSE ROCK. THIS STORM WAS NEARLY STATIONARY. HAIL UP TO THE SIZE OF PENNIES IS EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN. RADAR ESTIMATES SHOW THIS STORM HAS PRODUCED AROUND AN INCH OF RAINFALL IN THE LAST HOUR. THIS WILL CAUSE QUICK RISES OF AREAS CREEKS AND STREAMS...ESPECIALLY IN THE ROCK CANYON DRAINAGE. PRECAUTIONARY/PREPAREDNESS ACTIONS... IF YOU ARE IN THE ADVISORY AREA AND STORMS APPROACH...TAKE SHELTER IN A STURDY BUILDING. && LAT...LON 3701 11200 3673 11201 3675 11223 3700 11232 TIME...MOT...LOC 0100Z 180DEG 0KT 3691 11214 MCS
The Flagstaff radar (KFSX), 172 km away, was scanning. The volume nearest the first event began at 01:30 UTC.
1 flash flood. Local standard time, as filed.
Flash flooding was reported along Highway 191 between mile markers 322 and 324.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Arizona in 2013Every state in 2013This day in weather historyWarnings in Arizona, August 2013
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: 474469.