1 hail, as filed by the National Weather Service.
Every event with a place to put it. 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 18, 9:25 AM MST, 2 hours 5 minutes earlier.
NORTHERN ARIZONA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
925 AM MST WED SEP 18 2002
.SYNOPSIS...A TROUGH OF LOW PRESSURE WILL MOVE ACROSS NORTHERN
ARIZONA TODAY. THIS WILL BRING WINDY CONDITIONS...AND COOLER
TEMPERATURES TO THE NORTHLAND. THERE WILL BE A CHANCE OF SHOWERS AND
THUNDERSTORMS OVER EASTERN ARIZONA INTO THE EVENING HOURS. HIGH
PRESSURE WILL RETURN ON THURSDAY...WITH MOSTLY CLEAR SKIES EXPECTED.
.DISCUSSION...LOW PRESSURE SYSTEM OVER COLORADO WILL DRAG A S/WV
INTO EASTERN ARIZONA TODAY. THIS SAME LOW ALSO INDUCED A SURGE
OVERNIGHT WHICH HAS SIGNIFICANTLY INCREASED MOISTURE IN THE BOUNDARY
LAYER. COOLING AT THE MID LEVELS COMBINED WITH SHEAR AND MOISTURE
WILL COME TOGETHER FOR AN ACTIVE DAY OVER THE EASTERN ZONES. IN
ADDITION TO THIS...WINDS AHEAD OF THE TROUGH ARE REACHING 40 KTS IN
THE EASTERN ZONES...AND A NPW IS IN EFFECT. POPS HAVE BEEN INCREASED
IN THE EASTERN ZONES AS WELL...BUT WILL FURTHER UPDATE THE FIRST
PERIOD TO FINE TUNE LOCATION OF EARLY CONVECTION. SYSTEM WILL PULL
OUT TONIGHT WITH CLEARING AND A MUCH MORE STABLE AIRMASS. PETERSON.
.FGZ...WIND ADVISORY UNTIL 3 PM MST FOR ZONES 11>14 16>18 AND 40.
.CODED TEMPERATURES/POPS FOR SELECTED CITIES IN NORTHERN ARIZONA
CITY TEMPERATURES HI/LO PROBABILITY OF PRECIP
TDY TON THU FRI TDY TON THU FRI
FLAGSTAFF 069/037 067/035 072/040 000 000 000 000 000 000
WINSLOW 080/047 079/044 084/050 020 000 000 000 000 000
PRESCOTT 079/047 078/045 083/050 000 000 000 000 000 000
PAGE 080/054 078/052 081/057 020 000 000 000 000 000
WINDOW ROCK 068/033 068/031 071/036 040 020 000 000 000 000
CANYON DE CHELLY 074/040 074/038 077/043 040 020 000 000 000 000
COTTONWOOD 090/055 089/053 094/058 000 000 000 000 000 000
GRAND CANYON 070/038 068/036 073/041 000 000 000 000 000 000
GREER 066/036 064/034 069/039 040 000 000 000 000 000
HEBER 074/040 072/038 077/043 030 000 000 000 000 000
JACOB LAKE 066/037 064/035 069/040 000 000 000 000 000 000
NAVAJO N.M. 066/039 066/037 069/042 030 020 000 000 000 000
PAYSON 083/047 082/045 087/050 020 000 000 000 000 000
SEDONA 087/054 086/052 091/057 000 000 000 000 000 000
SELIGMAN 082/040 081/038 086/043 000 000 000 000 000 000
SHOW LOW 075/046 073/044 078/049 030 000 000 000 000 000
ST. JOHNS 076/043 075/040 080/046 030 000 000 000 000 000
WUPATKI N.M. 082/049 081/046 086/052 000 000 000 000 000 000AZZ004>018-037>040-181930- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE FLAGSTAFF AZ 915 AM MST TUE SEP 18 2002 ...SCATTERED SHOWERS AND THUNDERSTORMS EXPECTED OVER PORTIONS OF MAINLY EASTERN ARIZONA TODAY... ...WIND ADVISORY OVER MUCH OF EASTERN AND CENTRAL ARIZONA UNTIL 3 PM MST... A LOW PRESSURE SYSTEM OVER COLORADO COMBINED WITH A SIGNIFICANT MOISTURE INCREASE FROM NORTHERN MEXICO WILL BRING SCATTERED SHOWERS AND THUNDERSTORMS TO PORTIONS OF EASTERN ARIZONA TODAY. SHOWERS AND THUNDERSTORMS ARE ALREADY OCCURRING OVER THE EASTERN RIM AND WHITE MOUNTAINS...AS WELL AS THE NORTHEAST PLATEAUS AND MESAS. THE BEST CHANCE FOR CONTINUED STORM ACTIVITY TODAY WILL BE MAINLY EAST OF A LINE FROM PAYSON TO WINSLOW NORTHEAST TO THE 4-CORNERS. MOST STORMS WILL CONTAIN GUSTY WINDS AND LIGHT TO MODERATE RAIN. DUE TO THE RECENT RAINFALL OVER THE STATE...SOME AREAS NORTH OF THE RIM WILL HAVE A LOW TO MODERATE CHANCE FOR MINOR FLOODING. IN ADDITION TO THE RAIN...THE LOW PRESSURE SYSTEM WILL BRING VERY WINDY CONDITIONS TO PORTIONS OF EASTERN AND CENTRAL ARIZONA TODAY. A WIND ADVISORY IS IN EFFECT FROM FLAGSTAFF EASTWARD UNTIL 3 PM MST. AREAS IN THE WIND ADVISORY WILL EXPERIENCE WIND GUSTS AS HIGH AS 45 MPH THROUGH THE AFTERNOON. BURNED AREA RAIN OUTLOOK... RODEO-CHEDISKI BURN AREA...EXPECT SCATTERED SHOWERS AND THUNDERSTORMS THROUGH THE AFTERNOON. THE HEAVIER SHOWERS MAY PRODUCE UP TO A HALF INCH OF RAIN. INDIAN BURN AREA...NO SHOWERS AND THUNDERSTORMS EXPECTED TODAY.
The Flagstaff radar (KFSX), 164 km away, was scanning. The volume nearest the first event began at 18:28 UTC.
1 hail. Local standard time, as filed.
Quarter sized (one inch) hail was reported on Highway 160 between Cow Springs and Kayenta.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Arizona in 2002Every state in 2002This day in weather historyWarnings in Arizona, September 2002
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: 5321061.