1 dust storm, 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 9, 2:25 PM MST, 35 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE FLAGSTAFF AZ 225 PM MST MON AUG 09 2004 .SYNOPSIS...SCATTERED SHOWERS AND THUNDERSTORMS ALONG AND SOUTH OF THE MOGOLLON RIM AND WHITE MOUNTAINS WILL DECREASE THIS EVENING. DRIER AIR WILL RETURN TUESDAY AND WEDNESDAY...AND SHOWER AND THUNDERSTORM ACTIVITY WILL BE AT A MINIMUM. THE BEST CHANCES WILL BE SOUTH OF THE MOGOLLON RIM. CONDITIONS WILL RETURN TO NORMAL BY THE END OF WEEK AS MOISTURE RETURNS TO THE STATE...AND SHOWERS AND THUNDERSTORMS START TO SPREAD BACK NORTHWARD. && .DISCUSSION...LARGE AMOUNT OF CONVECTION OVER THE EAST-CENTRAL ZONES THIS AFTERNOON...AS WELL AS LESSER AMOUNTS WESTWARD ALONG THE RIM AND INTO YAVAPAI AND NORTHERN GILA COUNTIES. EXPECT THIS CONVECTION TO DECREASE TONIGHT AS CAPE VALUES DO NOT SUGGEST MUCH NOCTURNAL ACTIVITY. STREAMLINES SHIFT AGAIN TUESDAY AND WEDNESDAY AS THE MID LEVEL HIGH MOVES WESTWARD. NORTHERN AND CENTRAL ARIZONA WILL REMAIN IN AN UNFAVORABLE POSITION FOR MOISTURE ADVECTION AND ANY INCREASE SEEN TODAY WILL BEGIN TO GET SCOURED OUT. WILL DECREASE POPS TUESDAY AND WEDNESDAY FROM THE NORTH...LEAVING THE HIGHEST POPS SOUTH OF THE RIM. MODELS STILL SHOWING A MODEST TO PERHAPS SIGNIFICANT INCREASE IN MOISTURE BY THURSDAY/FRIDAY AND THEN INTO THE NEXT WEEKEND. WILL BEGIN TO RAMP POPS UP FOR THE LAST 3 OR 4 DAYS OF THE FORECAST TO ACCOUNT FOR THIS. FOR NOW...WILL NOT GO MUCH HIGHER THAN CLIMO/MEDIUM GRADE MONSOON AS THE MECHANISM TO DRAW MOISTURE NORTHWARD SEEMS A BIT UNSURE. PETERSON. .FGZ WATCHES/WARNINGS/ADVISORIES...NONE. &&
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE FLAGSTAFF AZ 920 AM MST MON AUG 9 2004 AZZ004>018-037>040-101400- 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- 920 AM MST MON AUG 9 2004 THIS HAZARDOUS WEATHER OUTLOOK IS FOR APACHE...COCONINO...NORTHERN GILA...NAVAJO...AND YAVAPAI COUNTIES IN NORTHERN ARIZONA. .DAY ONE...TODAY MOISTURE VALUES HAVE INCREASED SLIGHTLY OVERNIGHT AS SOME SOUTHERLY FLOW DEVELOPED OVER THE REGION. THE AIRMASS AT THE SURFACE IS STILL RATHER DRY...WITH THE EXCEPTION BEING IN AREAS SOUTH OF THE MOGOLLON RIM. EXPECT ISOLATED SHOWERS AND THUNDERSTORMS TO DEVELOP BY LATE THIS MORNING OVER THE MOGOLLON RIM...WHITE MOUNTAINS...AND PORTIONS OF YAVAPAI AND NORTHERN GILA COUNTIES. STORMS TODAY WILL LIKELY PRODUCE ONLY LIGHT RAIN...AND GUSTY WINDS TO 45 MPH. VERY ISOLATED STRONGER STORMS WILL PRODUCE MODERATE TO BRIEFLY HEAVY RAIN AND SMALL HAIL...THESE STORMS WILL MOST LIKELY OCCUR OVER THE SOUTHERN SECTIONS OF YAVAPAI COUNTY...AND NORTHERN GILA COUNTY. DUE TO THE ISOLATED COVERAGE OF STORMS TODAY...AND THE LACK OF RAINFALL THE LAST FEW DAYS...THE RISK FOR FLOODING TODAY REMAINS LOW. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY MAINLY DRY CONDITIONS ARE EXPECTED TUESDAY AND WEDNESDAY...WITH ISOLATED STORMS DEVELOPING SOUTH OF THE MOGOLLON RIM. MOISTURE WILL RETURN TO THE AREA THURSDAY THROUGH SUNDAY...WITH SCATTERED SHOWERS AND THUNDERSTORMS INCREASING AND MOVING NORTH ACROSS MUCH OF THE AREA. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.
The national radar mosaic for the moment the first event began.
1 dust storm. Local standard time, as filed.
Blowing dust caused the visibility along I-40 (mile post 245) to drop to 1/8 of a mile.
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: 5419989.