1 lightning, 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 Sep 4, 9:10 PM MST, 2 hours 51 minutes earlier.
NORTHERN ARIZONA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
910 PM MST THU SEP 04 2003
.SYNOPSIS...DEEP MOISTURE WILL REMAIN ACROSS NORTHERN ARIZONA
FRIDAY...LEADING TO SCATTERED MAINLY AFTERNOON AND EVENING
THUNDERSTORMS. DRIER AIR WILL MOVE OVER THE STATE FOR THE WEEKEND
AND INTO EARLY NEXT WEEK WITH ONLY ISOLATED THUNDERSTORM ACTIVITY
OVER THE HIGHER TERRAIN. SOME BREEZY CONDITIONS MAY DEVELOP ACROSS
NORTHERN PORTIONS OF THE STATE BY MONDAY AND TUESDAY AS A STORM
SYSTEM MOVES ACROSS UTAH.
.DISCUSSION...PLENTY OF THUNDERSTORM ACTIVITY THIS AFTERNOON AND
EVENING ACROSS NRN AZ. CURRENTLY HAVE A SMALL STREAM FLOOD ADVISORY
OUT FOR SW YAVAPAI COUNTY THROUGH 930 PM MST. SPOTTER JUST NORTH OF
WICKENBURG REPORTING HALF INCH DIAM HAIL AND 2 INCHES OF RAIN IN 45
MINUTES. CURRENTLY RADAR SHOWING POCKETS OF MAINLY STRATIFORM RAIN
ACROSS THE CWA...WITH DEVELOPMENT OCCURRING ALONG THE RIM NOW. WILL
BE UPDATING THE ZONES TO EXTEND THE CHANCE OF SHOWERS TONIGHT PAST
MIDNIGHT ALL ZONES.
A QUICK LOOK AT THE 00Z GFS SHOWS CONTINUITY WITH ITS PREVIOUS
RUNS...THE SHORT OF IT IS ANOTHER DAY OF SCATTERED SHOWERS AND
THUNDERSTORMS FRIDAY AND THEN DRYING FROM WEST TO EAST COMMENCING
EARLY SATURDAY THROUGH SUNDAY.
JDL
.NOTE...EFFECTIVE WEDNESDAY OCTOBER 1 2003...THE TEMPERATURES AND
PROBABILITIES OF PRECIPITATION TABLE (BELOW) WILL NO LONGER BE
APPENDED TO THIS PRODUCT. THE INFORMATION...ALONG WITH PREVAILING
DAYTIME WEATHER...WILL BE AVAILABLE IN THE RECENTLY ADOPTED TABULAR
STATE FORECAST (SFT). THE SFT PROVIDES THESE FORECASTS THROUGH 7
DAYS. THE WMO HEADER FOR THIS PRODUCT IS FPUS65 KPSR. THE PRODUCT
IDENTIFIER IS PHXSFTAZ. USING THE INTERNET...YOU CAN ACCESS THE SFT
DIRECTLY AT HTTP://WWW.WRH.NOAA.GOV/CGI-BIN/GPRODUCT.PL?FLGPHXSFTAZ
.FGZ...NONE.
.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 048/076 049/076 048/077 030 050 030 040 030 030
WINSLOW 060/087 062/086 061/087 020 020 020 020 010 010
PRESCOTT 060/084 061/085 060/086 030 040 030 040 020 020
PAGE 071/092 071/091 070/092 020 020 030 020 010 010
WINDOW ROCK 049/083 050/082 048/083 030 040 030 040 030 030
CANYON DE CHELLY 056/089 057/088 055/089 020 020 020 020 020 020
COTTONWOOD 068/095 069/096 068/097 020 030 020 030 020 020
GRAND CANYON 049/077 050/077 049/078 020 040 030 040 020 020
GREER 047/073 048/073 047/074 020 040 020 030 030 030
HEBER 051/081 052/081 051/082 030 050 030 040 030 030
JACOB LAKE 048/073 049/073 048/074 020 040 030 040 020 020
NAVAJO N.M. 055/081 056/080 054/081 030 030 030 030 020 020
PAYSON 060/088 061/089 060/090 030 020 030 030 020 020
SEDONA 067/092 068/093 067/094 020 030 020 030 020 020
SELIGMAN 053/087 054/088 053/089 020 030 020 030 020 020
SHOW LOW 057/082 058/082 057/083 020 030 030 030 020 020
ST. JOHNS 056/083 058/082 057/083 020 030 030 030 020 020
WUPATKI N.M. 062/089 064/088 063/089 020 020 020 020 010 010AZZ004>018-037>040-050200- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE FLAGSTAFF AZ 1000 AM MST THU SEP 4 2003 THIS HAZARDOUS WEATHER OUTLOOK IS FOR APACHE...COCONINO...NORTHERN GILA...NAVAJO...AND YAVAPAI COUNTIES IN NORTHERN ARIZONA. .DAY ONE...TODAY SCATTERED SHOWERS AND THUNDERSTORMS WILL FORM OVER THE HIGHER TERRAIN OF NORTHERN ARIZONA BY THE LATE IN THE MORNING BUT BE MOST NUMEROUS OVER THE MOGOLLON RIM...KAIBAB PLATEAU AND GRAND CANYON PARK AREAS. WINDS ALOFT WILL BE WEAK AND FROM THE WEST NORTHWEST. ANY STORMS THAT FORM TODAY WILL BE SLOW MOVERS WITH A GENERAL MOTION TOWARD THE SOUTHEAST AT 5 MPH. THE MAIN AREA OF FOCUS WILL BE THE AREA OF FLAGSTAFF...THE GRAND CANYON AND PRESCOTT WHERE INCREASING MOISTURE AND BRIGHT SUNSHINE WILL COMBINE TO PRODUCE A VERY UNSTABLE AIR MASS. EXPECT ISOLATED STORMS TO PRODUCE 1 INCH DIAMETER HAIL AND LOCALIZED FLOODING. .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), 124 km away, was scanning. The volume nearest the first event began at 06:58 UTC.
1 lightning. Local standard time, as filed.
Lightning struck a radio station in Sedona and caused $10,000 damage to electrical equipment.
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, September 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: 5372053.