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 Aug 17, 3:00 PM MST, 30 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE FLAGSTAFF AZ 300 PM MST TUE AUG 17 2004 .SYNOPSIS...SCATTERED SHOWERS AND THUNDERSTORMS WILL CONTINUE OVER NORTHERN ARIZONA DURING THE AFTERNOON AND EVENING HOURS THROUGH WEDNESDAY NIGHT. ON THURSDAY...A SLOW DRYING TREND IS EXPECTED TO BEGIN...LEADING TO A DECREASE IN AREAL COVERAGE OF THUNDERSTORMS FROM SOUTHWEST TO NORTHEAST. ON SATURDAY...SOUTHWEST FLOW ALOFT SHOULD RETURN TO THE REGION....FURTHER DRYING THE AIRMASS... ALLOWING FOR WARMER MAX TEMPERATURES AND ONLY A SLIGHT CHANCE OF HIGH BASED THUNDERSTORMS. && .DISCUSSION... ANOTHER ACTIVE AFTERNOON OF THUNDERSTORMS ACROSS NORTHERN ARIZONA...SAVE THE LOWER TERRAIN IN THE LITTLE COLORADO RIVER VALLEY. OUTFLOW BOUNDARIES ARE EVIDENT ON SAT LOOP FROM STORMS SOUTH OF RQE THIS AFTERNOON AND SHOULD TRIGGER STORMS IN THE ERN LCR LATER THIS AFTERNOON AND EVENING. ON WEDNESDAY...THE GFS SHOWS ANOTHER DEGREE OF COOLING AT H5 AND LITTLE CHANGE IN THE RH FIELDS OVER NRN AZ...THUS EXPECT SCATTERED SHOWERS AND THUNDER MAINLY DURING THE AFTERNOON HOURS. THURSDAY APPEARS TO BE THE START OF A SLOW DRYING TREND AS A RIDGE IS SHOWN BUILDING INTO SRN CAL. CROSS SECTION SHOW DRIER AIR BELOW H7 MOVING INTO SW YAVAPAI COUNTY...ESPECIALLY THE MESOETA WHICH BRINGS THIS DRIER AIR IN FASTER. BY FRIDAY H7 TO H5 MOISTURE IS THINNING RAPIDLY AS RIDGE AXIS MOVES CLOSER TO NRN AZ. ON SATURDAY THE RIDGE AXIS PASSES OVERHEAD..SHUNTED EASTWARD ON SOUTHWEST FLOW ALOFT. THIS SOUTHWEST FLOW REALLY DRIES THINGS OUT ACROSS FAR WRN AZ. THEIR IS STILL ENOUGH RH OVER THE CWA THAT ISOLATED STORMS ARE POSSIBLE...BUT DO EXPECT A SIGNIFICANT DECREASE IN STORM AREAL COVERAGE AND WARMER MAX TEMPS OVER THE WEEKEND. NO CHANGES MADE TO THE EXTENDED. DL && .FGZ WATCHES/WARNINGS/ADVISORIES...NONE. &&
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE FLAGSTAFF AZ 1000 AM MST TUE AUG 17 2004 AZZ004>018-037>040-181400- WESTERN MOGOLLON RIM-GRAND CANYON COUNTRY-YAVAPAI COUNTY MOUNTAINS- YAVAPAI COUNTY VALLEYS AND BASINS-OAK CREEK AND SYCAMORE CANYONS- MARBLE AND GLEN CANYONS-KAIBAB PLATEAU-COCONINO PLATEAU- NORTHEAST PLATEAU AND MESAS HWY 264 NORTHWARD- NORTHEAST PLATEAU AND MESAS SOUTH OF HWY 264- CHINLE VALLEY-CHUSKA MOUNTAINS AND DEFIANCE PLATEAU- BLACK MESA AREA-LITTLE COLORADO RIVER VALLEY IN COCONINO COUNTY- LITTLE COLORADO RIVER VALLEY IN NAVAJO COUNTY- LITTLE COLORADO RIVER VALLEY IN APACHE COUNTY- EASTERN MOGOLLON RIM-WHITE MOUNTAINS-NORTHERN GILA COUNTY- 1000 AM MST TUE AUG 17 2004 THIS HAZARDOUS WEATHER OUTLOOK IS FOR APACHE...COCONINO...NORTHERN GILA...NAVAJO...AND YAVAPAI COUNTIES IN NORTHERN ARIZONA. .DAY ONE...TODAY AN UNSTABLE AND MOIST AIR MASS REMAINS OVER THE NORTHLAND. ADDITIONALLY... A WEAK UPPER LEVEL DISTURBANCE WILL BE CROSSING THE REGION. SCATTERED THUNDERSTORM SHOULD FIRST DEVELOP OVER THE AREAS ABOVE 6000 FT MSL AFTER 11 AM MST...AND LATER IN THE AFTERNOON ACROSS THE REST OF NORTHERN ARIZONA. ISOLATED STORMS MAY PRODUCE RAINFALL RATES OF ONE INCH PER HOUR...ESPECIALLY ACROSS AREAS NORTH OF A LINE FROM SUPAI TO FLAGSTAFF TO WHITE RIVER. THE MAIN THREAT TODAY WILL BE THE POTENTIAL FOR SMALL STREAM FLOODING AND ISOLATED FLASH FLOODING. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY PRESENT INDICATIONS ARE FOR MOISTURE TO LINGER OVER THE NORTHLAND WEDENSDAY...WITH ANOTHER ROUND OF SHOWERS AND THUNDERSTORMS EXPECTED. ON THURSDSAY...THE FLOW ALOFT WILL TURN TO A DRIER WESTERLY DIRECTION. THUNDERSTORMS ARE EXPECTED EACH DAY BUT LOOK FOR A DOWNWARD TREND IN COVERAGE THROUGH SATURDAY. ON SUNDAY...MODELS SHOW A WEAK SURGE OF MOISTURE WITH AN EXPECTED INCREASE IN AREAL COVERAGE OF STORMS. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
230 PM MST TUE AUG 17 2004
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION...ST.. ...SOURCE....
..REMARKS..
0200 PM HAIL 3 S PRESCOTT 34.53N 112.45W
08/17/2004 0.75 INCH YAVAPAI AZ PUBLIC
&&
TEXTDEMOThe Flagstaff radar (KFSX), 124 km away, was scanning. The volume nearest the first event began at 22:31 UTC.
1 flash flood. Local standard time, as filed.
Flash flooding in Beaver Creek south of Bagdad caused the closure of Highway 97 for about 45 minutes. Flooding also closed Highway 97 at Bridle Creek south of Bagdad. Other roads in the area were closed because of the flooding and debris.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Arizona in 2004Every state in 2004This day in weather historyWarnings in Arizona, August 2004
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: 5420081.