1 flash flood, 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 Jul 18, 2:26 PM MST, 5 hours 4 minutes earlier.
NORTHERN ARIZONA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
230 PM MST THU JUL 17 2003
.SYNOPSIS...SUBTROPICAL MOISTURE HAS INCREASED ACROSS THE AREA AS
THE REMNANTS OF TROPICAL STORM CLAUDETTE CONTINUE TO MOVE ACROSS
SOUTHERN ARIZONA. SHOWERS AND THUNDERSTORMS ARE EXPECTED TO DEVELOP
AGAIN THIS AFTERNOON AND EVENING...MAINLY OVER AND SOUTH OF THE
MOGOLLON RIM. SCATTERED SHOWERS AND THUNDERSTORMS ARE EXPECTED INTO
NEXT WEEK.
.DISCUSSION...STRONG HIGH PRESSURE REMAINS ANCHORED OVER THE WEST
WITH THE CENTER LOCATED IN COLORADO. THIS CONTINUES TO PRODUCE A
WELL-DEVELOPED EASTERLY FLOW OF SUBTROPICAL MOISTURE ACROSS ARIZONA.
EMBEDDED WITHIN THIS EASTERLY FLOW ARE THE REMNANTS OF TROPICAL
STORM CLAUDETTE. THE 700 MB CIRCULATION CENTER IS LOCATED IN SW AZ
THIS AFTERNOON AND IS MAINTAINING A SLOW WESTERLY TRACK. IN ITS
WAKE...AN ENHANCED SOUTHEASTERLY FLOW HAS DEVELOPED AND IS
TRANSPORTING SIGNIFICANT AMOUNTS OF SUBTROPICAL MOISTURE NORTHWARD
INTO ARIZONA. GPSMET SHOWS THAT IPWV HAS INCREASED TO MORE THAN 1.5
INCHES IN SERN AZ AND ABOUT 1 INCH IN NRN AZ...WITH MUCH LOWER
VALUES NORTH OF THE MOGOLLON RIM. SFC DEWPOINTS ARE UP 5-10 DEGREES
FROM THIS TIME YESTERDAY AND STEEP LAPSE RATES REMAIN IN PLACE. IN
ADDITION...WIND FIELDS HAVE INCREASED IN MID LEVELS RESULTING IN
ENHANCED DEEP-LAYER SHEAR SO THAT STORMS SHOULD MOVE ALONG AT A GOOD
CLIP AND UNDERGO SOME MESOSCALE ORGANIZATION. FOR SAT/SUN...EXPECT A
SLIGHT DECREASE IN ACTIVITY AS THE RIDGE BEGINS TO MOVE WESTWARD AND
THICKNESSES INCREASE. FOR THE EXTENDED...SUFFICIENT MOISTURE WILL
REMAIN ACROSS THE AREA OF DAILY SHOWERS AND THUNDERSTORMS. DB
.FGZ...NONE.
.CODED TEMPERATURES/POPS FOR SELECTED CITIES IN NORTHERN ARIZONA
CITY TEMPERATURES LO/HI PROBABILITY OF PRECIP
TON SAT SUN MON TON SAT SUN MON
FLAGSTAFF 054/084 052/085 053/084 030 030 030 030 030 030
WINSLOW 067/097 066/098 065/095 030 020 020 020 020 020
PRESCOTT 065/092 063/093 063/090 030 020 020 030 020 030
PAGE 076/102 075/101 073/101 020 020 010 020 010 020
WINDOW ROCK 055/090 056/090 056/088 020 030 030 030 030 030
CANYON DE CHELLY 065/096 066/096 066/094 020 030 020 030 020 030
COTTONWOOD 073/103 071/104 071/101 030 020 010 020 010 020
GRAND CANYON 055/088 052/089 051/087 030 030 020 030 020 030
GREER 050/080 048/081 049/080 040 040 030 040 030 040
HEBER 055/089 053/090 054/089 040 030 020 040 020 040
JACOB LAKE 054/082 052/083 053/082 030 040 030 030 030 030
NAVAJO N.M. 059/090 060/090 060/088 020 030 020 030 020 030
PAYSON 066/097 064/098 064/095 040 030 010 020 010 020
SEDONA 071/101 069/102 069/099 030 030 020 030 020 030
SELIGMAN 064/095 062/096 062/093 030 030 020 020 020 020
SHOW LOW 062/090 060/091 061/090 030 030 020 030 020 030
ST. JOHNS 062/098 063/096 063/095 030 030 020 030 020 030
WUPATKI N.M. 070/099 069/100 068/097 030 020 020 030 020 030AZZ004>018-037>040-190200- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE FLAGSTAFF AZ 1000 AM MST FRI JUL 18 2003 THIS HAZARDOUS WEATHER OUTLOOK IS FOR APACHE...COCONINO...NORTHERN GILA...NAVAJO...AND YAVAPAI COUNTIES IN NORTHERN ARIZONA. .DAY ONE...TODAY AN INCREASE IN SUBTROPICAL MOISTURE HAS OCCURRED OVER THE AREA IN RESPONSE TO THE REMNANTS OF TROPICAL STORM CLAUDETTE MOVING ACROSS SOUTHERN ARIZONA. EXPECT SCATTERED SHOWERS AND THUNDERSTORMS TO DEVELOP OVER AND SOUTH OF THE MOGOLLON RIM LATE THIS MORNING AND THIS AFTERNOON. SOME OF THESE SHOWERS MAY PRODUCE HEAVY RAINFALL ALONG WITH STRONG AND GUSTY WINDS. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY SUBTROPICAL MOISTURE WILL REMAIN OVER ARIZONA INTO THE EARLY PART OF THE WEEKEND RESULTING IN A CONTINUED CHANCE OF SHOWERS AND THUNDERSTORMS EACH DAY. .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 02:31 UTC.
1 flash flood. Local standard time, as filed.
The Chino Valley Police Department reported several streets in town were impassable due to high water. A spotter reported half an inch of rain in just seventeen minutes. High water remained until early the next morning.
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, July 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: 5379484.