1 funnel cloud, as filed by the National Weather Service.
Every event with a place to put it; 1 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
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 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 14, 3:05 PM MST, 7 minutes earlier.
NORTHERN ARIZONA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
305 PM MST THU AUG 14 2003
.SYNOPSIS...A WEAK LOW PRESSURE SYSTEM WILL GENERATE MORE
PRECIPITATION FROM LATE TONIGHT THROUGH MIDMORNING. AFTER ITS
PASSAGE...EXPECT CONTINUED SHOWERS AND THUNDERSTORMS EACH AFTERNOON
WITH SLIGHTLY COOLER TEMPERATURES FOR THE NEXT DAY OR TWO.
.DISCUSSION...DYNAMICS AHEAD OF THE INVERTED TROUGH APPROACHING
ARIZONA FROM THE EAST HAS PROMPTED ISSUANCE OF A SEVERE THUNDERSTORM
WATCH THROUGH 900 PM MST FOR AREAS OF SOUTH CENTRAL ARIZONA. SOME
ISOLATED SEVERE THUNDERSTORMS WILL OCCUR BEYOND THE BOUNDARIES OF
THE WATCH BOX. MOST ACTIVITY WILL OCCUR SOUTHEAST OF A LINE FROM
CANYON DE CHELLY NATIONAL MONUMENT TO PRESCOTT.
AS THE UPPER LEVEL TROUGH PROGRESSES WESTWARD...PRECIPITATION WILL
DEVELOP OVER NORTHEASTERN ARIZONA AROUND MIDNIGHT...MAKING ITS WAY
SOUTHWESTWARD INTO SOUTHERN YAVAPAI COUNTY TOMORROW MORNING. WHILE
MUCH OF THE RAINFALL WILL BE SHOWERY OR EVEN STRATIFORM...EXPECTED
ISOLATED THUNDERSTORMS TO OCCUR THROUGH THE NIGHT. COOL AIR NEAR THE
SURFACE TOMORROW WILL DELAY THE ONSET OF SIGNIFICANT CONVECTION
UNTIL LATER IN THE DAY...BUT PROBABILITIES FOR MORE ACTIVITY REMAIN
HIGH DUE TO DEEP MOISTURE AND COOL AIR ALOFT. EARLIEST CONVECTION
WILL BEGIN IN EASTERN ZONES AS THEY LOSE A BIT OF CLOUD COVER. WITH
SOILS IN YAVAPAI COUNTY ALREADY MOIST...WILL BE WATCHING RAINFALL
AMOUNTS CLOSELY FOR FLOODING POTENTIAL TOWARD MORNING. ON
SATURDAY...LOOK FOR POPS TO RECEDE TO MORE SEASONABLE LEVELS THOUGH
TEMPERATURES WILL REMAIN RATHER COOL THROUGH THE WEEKEND.
FOR THE EXTENDED...THE UPPER LEVEL LOW WILL MOVE NORTHWARD OUT OF
THE STATE LEAVING A RATHER NONDESCRIPT PRESSURE PATTERN OVER
ARIZONA. EXPECT CONTINUED...DAILY AFTERNOON AND EVENING SHOWERS AND
THUNDERSTORMS. HOWARD
.FGZ...SEVERE THUNDERSTORM WATCH FOR AZ ZONES 8/13/14/16/17/18/37
THROUGH 900 PM MST.
.CODED TEMPERATURES/POPS FOR SELECTED CITIES IN NORTHERN ARIZONA
CITY TEMPERATURES LO/HI PROBABILITY OF PRECIP
TON FRI SAT SUN TON FRI SAT SUN
FLAGSTAFF 052/069 049/072 047/075 080 060 030 040 030 040
WINSLOW 063/081 060/083 058/087 060 050 020 020 020 020
PRESCOTT 062/079 060/079 059/082 070 060 030 030 020 020
PAGE 071/086 070/086 062/087 050 050 020 030 020 020
WINDOW ROCK 052/078 050/077 050/080 050 060 030 040 030 040
CANYON DE CHELLY 060/084 058/083 058/086 040 050 020 030 020 030
COTTONWOOD 070/093 068/094 067/098 060 050 020 020 020 020
GRAND CANYON 053/071 051/073 047/076 060 050 030 030 020 040
GREER 049/064 046/067 044/070 080 070 040 060 040 050
HEBER 054/074 051/077 049/080 080 070 040 050 030 040
JACOB LAKE 050/069 049/072 047/075 060 050 020 030 030 040
NAVAJO N.M. 064/080 063/081 062/084 060 050 020 030 030 040
PAYSON 062/083 060/083 059/086 060 060 030 030 020 020
SEDONA 067/087 065/087 064/090 060 060 020 030 020 020
SELIGMAN 062/082 060/082 058/086 040 040 020 020 020 030
SHOW LOW 059/074 056/076 054/080 060 060 030 040 030 030
ST. JOHNS 057/081 056/080 055/084 040 040 030 020 020 030
WUPATKI N.M. 064/083 061/085 059/089 060 050 020 020 020 020AZZ004>018-037>040-150200- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE FLAGSTAFF AZ 925 AM MST THU AUG 14 2003 THIS HAZARDOUS WEATHER OUTLOOK IS FOR APACHE...COCONINO...NORTHERN GILA...NAVAJO...AND YAVAPAI COUNTIES IN NORTHERN ARIZONA. .DAY ONE...TODAY CONVECTION WILL BEGIN TO FIRE FIRST OVER EASTERN PORTIONS OF NORTHERN ARIZONA. CONVECTION OVER CENTRAL AND WESTERN PORTIONS WILL BE DELAYED DUE TO CLOUD COVER INHIBITING SURFACE HEATING. EXPECT SCATTERED COVERAGE. WITH SOILS ALREADY MOIST...WATCH FOR LOCALIZED NUISANCE FLOODING IN SOME AREAS. EXPECT MORE WIDESPREAD PRECIPITATION BETWEEN MIDNIGHT AND MIDMORNING ON FRIDAY AS DYNAMICS ASSOCIATED WITH APPROACHING WEAK LOW PRESSURE CONTRIBUTE TO INCREASED RAINFALL. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES. DEFINITION OF HAZARDOUS WEATHER...A WEATHER EVENT POSING A THREAT TO LIFE AND PROPERTY.
The Flagstaff radar (KFSX), 181 km away, was scanning. The volume nearest the first event began at 22:13 UTC.
1 funnel cloud. Local standard time, as filed.
Two funnel clouds were reported by Department of Public Safety about 10 miles west of St Johns.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Arizona in 2003Every state in 2003This day in weather historyWarnings in Arizona, August 2003
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: 5374248.