A thunderstorm produced severe hail and flash flooding near the town of Whiteriver.
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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 severe hail and flash flooding near the town of Whiteriver.
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 Sep 13, 3:00 PM MST, 4 hours 45 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE FLAGSTAFF AZ 300 PM MST FRI SEP 13 2013 .SYNOPSIS... DRIER AND MORE STABLE AIR WILL SLOWLY FILTER INTO NORTHERN ARIZONA THROUGH SUNDAY. EXPECT MUCH LESS THUNDERSTORM ACTIVITY...CONFINED MAINLY TO THE AFTERNOON AND EVENING HOURS. ON MONDAY WESTERLY FLOW WILL BRING DRY WEATHER STATE WIDE WITH MOSTLY CLEAR SKIES AND SEASONABLE TEMPERATURES. && .DISCUSSION... LOW PRESSURE CENTERED OVER THE NEVADA/UTAH BORDER THIS AFTERNOON WILL HEAD EASTWARD TONIGHT AND OVER THE NEXT FEW DAYS. THE LOW WILL EVENTUALLY EXIT THE AREA...USHERING IN A DRIER AIR MASS BY EARLY NEXT WEEK. FOR TONIGHT THROUGH SUNDAY...THE POSITION OF THE LOW WILL SET UP A BATTLE BETWEEN DRIER AIR FROM THE WEST WITH THE MONSOON MOISTURE PLUME STATIONED FROM NORTH TO SOUTH ACROSS NEW MEXICO. SOOOOO...AS DRY AIR MOVES IN ALOFT FROM THE WEST...AT THE LOWER LEVELS/SURFACE MOISTURE WILL CREEP WESTWARD INTO ARIZONA FROM NEW MEXICO. AS A RESULT...ENOUGH MOISTURE AND INSTABILITY WILL REMAIN THROUGH SUNDAY TO KEEP SOME CHANCE OF SHOWERS AND THUNDERSTORMS IN THE FORECAST ACROSS THE AREA. SATURDAY COULD BRING HIGHER STORM COVERAGE AS A WEAK WEATHER DISTURBANCE AND UPWARD MOTION MOVES OVER THE AREA. STILL...THE BEST CHANCE FOR STORMS WILL BE ALONG THE STATE LINES WITH UTAH AND NEW MEXICO. TEMPERATURES SHOULD SLOWLY EDGE TOWARD SEASONAL NORMALS. MONDAY THROUGH THURSDAY...A VERY DRY WESTERLY FLOW WILL DEVELOP AND PUSH ANY REMAINING MOISTURE EASTWARD. CURRENT MODEL RUNS HAVE SLOWED THIS DRYING PROCESS A BIT AND HAVE INCREASED THE CHANCES OF STORMS ALONG THE ARIZONA/NEW MEXICO BORDER TO ACCOUNT FOR MOISTURE LINGERING INTO MONDAY. OTHERWISE...NEXT WEEK LOOKS DRY WITH MOSTLY CLEAR SKIES...NORMAL TEMPERATURES AND LIGHT WINDS. && .AVIATION...FOR THE 00Z PACKAGE...SCT -SHRA/TSRA EAST OF A KPRC-KPGA WILL CONTINUE TROUGH 02Z THIS EVENING THEN DIMINISH. ISOLD MVFR CONDITIONS IN THE HEAVIEST SHOWERS. VFR CONDITIONS ELSEWHERE. SKIES BECOME MOSTLY CLEAR AFT 03-04Z TONIGHT. SCT -SHRA/TSRA WILL DEVELOP EAST OF A KPRC-KPGA LINE AGAIN AFTER 18-20Z ON SATURDAY. AVIATION DISCUSSION NOT UPDATED FOR AMENDMENTS. && .FGZ WATCHES/WARNINGS/ADVISORIES...NONE. && PUBLIC.........MCCOLLUM AVIATION.......MAS FOR NORTHERN ARIZONA WEATHER INFORMATION VISIT WEATHER.GOV/FLAGSTAFF
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE FLAGSTAFF AZ 203 PM MST FRI SEP 13 2013 AZZ010-011-132130- APACHE AZ- 203 PM MST FRI SEP 13 2013 THE NATIONAL WEATHER SERVICE IN FLAGSTAFF HAS ISSUED A SIGNIFICANT WEATHER ADVISORY FOR... EAST CENTRAL APACHE COUNTY IN NORTHEAST ARIZONA UNTIL 230 PM MST/330 PM MDT/ AT 157 PM MST...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED STRONG THUNDERSTORMS WITH 40 MPH WIND AND TORRENTIAL RAIN ALONG A LINE EXTENDING FROM RED LAKE CHAPTER HOUSE TO WINDOW ROCK...AND MOVING EAST AT 10 MPH. LOCATIONS IMPACTED INCLUDE... RED LAKE CHAPTER HOUSE... FORT DEFIANCE... ROUTES 12 AND 112 FROM WINDOW ROCK TO FORT DEFIANCE... PRECAUTIONARY/PREPAREDNESS ACTIONS... IF YOU ARE IN THE ADVISORY AREA AND STORMS APPROACH...TAKE SHELTER IN A STURDY BUILDING. IN ADDITION...SOME UNSECURED OBJECTS COULD BE BLOWN AROUND. SEEK SHELTER INDOORS UNTIL THE STORM PASSES. IN ADDITION...VERY HEAVY RAINFALL MAY CAUSE TEMPORARY PONDING ON SOME ROADS AND MINOR FLOODING OF POOR DRAINAGE AREAS. IN HEAVY RAINFALL SLOW DOWN TO REDUCE THE RISK OF HYDROPLANING...AND LEAVE A SAFE DISTANCE BETWEEN YOURSELF AND OTHER VEHICLES. && LAT...LON 3555 10916 3610 10925 3612 10904 3556 10904 TIME...MOT...LOC 2102Z 264DEG 8KT 3592 10909 3565 10906
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE FLAGSTAFF AZ 334 PM MST FRI SEP 13 2013 AZZ013-016-132300- NAVAJO AZ- 334 PM MST FRI SEP 13 2013 THE NATIONAL WEATHER SERVICE IN FLAGSTAFF HAS ISSUED A SIGNIFICANT WEATHER ADVISORY FOR... SOUTHEASTERN NAVAJO COUNTY IN NORTHEAST ARIZONA UNTIL 400 PM MST AT 330 PM MST...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A STRONG THUNDERSTORM NEAR SHUMWAY...MOVING EAST AT 10 MPH. HAIL UP TO THE SIZE OF NICKELS AND WIND GUSTS UP TO 40 MPH ARE EXPECTED WITH THIS STORM. LOCATIONS IMPACTED INCLUDE... TAYLOR... SHUMWAY... PRECAUTIONARY/PREPAREDNESS ACTIONS... IF YOU ARE IN THE ADVISORY AREA AND STORMS APPROACH...TAKE SHELTER IN A STURDY BUILDING. IN ADDITION...VERY HEAVY RAINFALL MAY CAUSE TEMPORARY PONDING ON SOME ROADS AND MINOR FLOODING OF POOR DRAINAGE AREAS. IN HEAVY RAINFALL SLOW DOWN TO REDUCE THE RISK OF HYDROPLANING...AND LEAVE A SAFE DISTANCE BETWEEN YOURSELF AND OTHER VEHICLES. && LAT...LON 3449 11004 3436 11002 3436 11018 3444 11018 TIME...MOT...LOC 2234Z 267DEG 7KT 3441 11012 JJ
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE FLAGSTAFF AZ 448 PM MST FRI SEP 13 2013 AZZ017-018-140015- GILA AZ-NAVAJO AZ- 448 PM MST FRI SEP 13 2013 THE NATIONAL WEATHER SERVICE IN FLAGSTAFF HAS ISSUED A SIGNIFICANT WEATHER ADVISORY FOR... EAST CENTRAL GILA COUNTY IN EAST CENTRAL ARIZONA SOUTHEASTERN NAVAJO COUNTY IN NORTHEAST ARIZONA UNTIL 515 PM MST AT 444 PM MST...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A STRONG THUNDERSTORM 8 MILES NORTHEAST OF CEDAR CREEK...MOVING NORTHEAST AT 10 MPH. HAIL UP TO THE SIZE OF PENNIES AND WIND GUSTS UP TO 40 MPH ARE EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN. LOCATIONS IMPACTED INCLUDE... NORTH FORK... PRECAUTIONARY/PREPAREDNESS ACTIONS... IF YOU ARE IN THE ADVISORY AREA AND STORMS APPROACH...TAKE SHELTER IN A STURDY BUILDING. && LAT...LON 3412 11009 3401 10992 3391 11012 3397 11019 TIME...MOT...LOC 2348Z 219DEG 9KT 3398 11010 JJ
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE FLAGSTAFF AZ 614 PM MST FRI SEP 13 2013 AZZ010-011-040-140200- APACHE AZ- 614 PM MST FRI SEP 13 2013 THE NATIONAL WEATHER SERVICE IN FLAGSTAFF HAS ISSUED A SIGNIFICANT WEATHER ADVISORY FOR... CENTRAL APACHE COUNTY IN NORTHEAST ARIZONA UNTIL 700 PM MST / 800 PM MDT AT 604 PM MST / 704 PM MDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A STRONG THUNDERSTORM NEAR KLAGETOH...MOVING NORTH AT 25 MPH. HAIL UP TO ONE-HALF INCH IN DIAMETER AND WIND GUSTS UP TO 40 MPH ARE EXPECTED WITH THIS STORM. LOCATIONS IMPACTED INCLUDE... KINLICHEE CHAPTER HOUSE... HIGHWAY 191 BETWEEN KLAGETOH AND GANADO... PRECAUTIONARY/PREPAREDNESS ACTIONS... IF YOU ARE IN THE ADVISORY AREA AND STORMS APPROACH...TAKE SHELTER IN A STURDY BUILDING. IN ADDITION...VERY HEAVY RAINFALL MAY CAUSE TEMPORARY PONDING ON SOME ROADS AND MINOR FLOODING OF POOR DRAINAGE AREAS. IN HEAVY RAINFALL SLOW DOWN TO REDUCE THE RISK OF HYDROPLANING...AND LEAVE A SAFE DISTANCE BETWEEN YOURSELF AND OTHER VEHICLES. && LAT...LON 3581 10959 3575 10929 3550 10946 3553 10961 TIME...MOT...LOC 0113Z 190DEG 20KT 3562 10951
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
728 PM MST FRI SEP 13 2013
AZZ017-140245-
NAVAJO AZ-APACHE AZ-
728 PM MST FRI SEP 13 2013
THE NATIONAL WEATHER SERVICE IN FLAGSTAFF HAS ISSUED A
SIGNIFICANT WEATHER ADVISORY FOR...
SOUTHWESTERN APACHE COUNTY IN NORTHEAST ARIZONA
EXTREME SOUTHEASTERN NAVAJO COUNTY IN NORTHEAST ARIZONA
UNTIL 745 PM MST
AT 720 PM MST...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
STRONG THUNDERSTORM NEAR SEVEN MILE...OR 5 MILES SOUTH OF
WHITERIVER...MOVING NORTH AT 10 MPH.
HAIL UP TO THE SIZE OF PENNIES AND WIND GUSTS UP TO 40 MPH ARE
EXPECTED WITH THIS STORM.
LOCATIONS IMPACTED INCLUDE...
WHITERIVER AND RAINBOW CITY...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IN ADDITION...FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING. IF
STORMS APPROACH YOUR LOCATION OR YOU HEAR THUNDER...MOVE INSIDE A
STURDY BUILDING OR AN ALL METAL VEHICLE.
&&
LAT...LON 3391 10999 3385 10980 3373 10986 3371 11000
3375 11000
TIME...MOT...LOC 0227Z 201DEG 7KT 3380 10995
KDThe Flagstaff radar (KFSX), 144 km away, was scanning. The volume nearest the first event began at 02:43 UTC.
1 hail, 1 flash flood. Local standard time, as filed.
One inch diameter hail was reported 3 miles east of Whiteriver.
Flooding and debris was reported on several area roads. Three homes were flooded in East Fork and one in Sevenmile. The amount of damage was unknown.
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, September 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: 479368, 479370.