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 Aug 13, 3:15 AM MST, 7 hours 45 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE FLAGSTAFF AZ 315 AM MST FRI AUG 13 2004 .SYNOPSIS...SOUTHERLY FLOW WILL DEVELOP ACROSS ARIZONA TODAY BRINGING DEEP MOISTURE ACROSS THE AREA. STRONGER STORMS WILL BE CAPABLE OF EXTREMELY HEAVY RAINFALL THIS AFTERNOON AND EVENING. FOR THE WEEKEND THROUGH MONDAY...EXTENSIVE MOISTURE WILL REMAIN OVER THE NORTHLAND WITH THUNDERSTORMS DEVELOPING EACH DAY. && .DISCUSSION... FOCUS THIS MORNING IS ON A VERY WET NEXT COUPLE OF DAYS IN NORTHERN ARIZONA. DURING THE LAST 24 HOURS THE RIDGE AXIS HAS BEEN MOVING SLOWLY EASTWARD AS SUGGESTED BY YESTERDAYS PROGS...AND WAS ALONG A LINE FROM ROUGHLY ELKO NV THROUGH TUCSON THENCE SOUTHWARD. SATELLITE SHOWS THEIR IS A TIGHT VORT MAX OVER LAS VEGAS AND THEN A WEAKER UPPER LOW WEST OF SAN DIEGO. SAT PW VALUES AREA OVER 1.5 INCHES IN SW AZ THIS MORNING. WILL KEEP THE FLASH FLOOD WATCH GOING TODAY FOR THE WESTERN HALF OF THE CWA (AND HAVE ADDED THE KAIBAB PLATEAU AND GLEN/MARBLE CANYON ZONES) AS THE CONS LIST (WHICH IS EXISTING CLOUD COVER AND COOLER BOUNDARY LAYER) IS SHORTER THAN THE PROS VORT MAX NOW NEAR LAS VEGAS REMAINS IN AREA...MOISTURE TO INCREASE OVER THE WATCH AREA ON SOUTHERLY WINDS ( THESE WINDS ALREADY SEEN IN 06Z FGZ SOUNDING BTWN H7 AND H5)...LAST FEW DAYS THE WATCH AREA HAS SEEN RAINFALL. ALSO NOTED THAT OUR SFC PRESSURES HAVE BEEN FALLING OVER WRN AZ THIS MORNING A SIGN THAT UPWARD VERTICAL MOTION MOVING INTO THIS AREA. TONIGHT THROUGH THE WEEKEND...THE RIDGE AXIS CONTINUES TO MOVE SLOWLY EASTWARD AS SOUTHWEST FLOW MOVES INTO FAR WRN ARIZONA. PROGS DO HAVE THE DEEPER MOISTURE MVOING INTO NAVAJO AND APACHE COUNTIES. MODEL WIND STREAMLINES SHOW SOME INTERESTING SHEAR GOING ON OVER OUR STATE WHICH COULD HELP KEEP PRECIP GOING DURING THE NIGHT HOURS. IT IS POSSIBLE THAT ADDITIONAL FLASH FLOOD WATCHES MIGHT BE NEEDED OVER THE WEEKEND... LET US SEE WHAT HAPPENS TODAY. AS THE PREVIOUS SHIFT WROTE... PLEASE STAY INFORMED ABOUT THE WEATHER FORECAST THIS WEEKEND. DL && .FGZ WATCHES/WARNINGS/ADVISORIES... FLASH FLOOD WATCH TODAY FROM NOON UNTIL 10 PM MST ZONES: 4/5/6/7/8/15/16/18/37/38. &&
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE FLAGSTAFF AZ 1020 AM MST FRI AUG 13 2004 AZZ004>018-037>040-141400- 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- 1020 AM MST FRI AUG 13 2004 THIS HAZARDOUS WEATHER OUTLOOK IS FOR APACHE...COCONINO...NORTHERN GILA...NAVAJO...AND YAVAPAI COUNTIES IN NORTHERN ARIZONA. .DAY ONE...TODAY A FLASH FLOOD WATCH REMAINS IN AFFECT FOR NORTHERN GILA AND YAVAPAI COUNTIES...EASTERN AND WESTERN MOGOLLON RIM...COCONINO PLATEAU...GRAND CANYON COUNTRY...AND KAIBAB PLATEAU FROM NOON TODAY THROUGH 1000 PM MST THIS EVENING. FOR MORE DETAILS ON THE WATCH SEE (PHXFFAFGZ). DEEP MOISTURE OVER SOUTHWEST PORTIONS OF THE STATE HAS BEGUN TO MOVE NORTHWARD INTO YAVAPAI COUNTY. THE MOVEMENT OF THE DEEPER MOISTURE INTO NORTHERN ARIZONA IS SLOWER THAN ANTICIPATED. SO THE HEAVY RAIN THREAT HAS SHIFT FARTHER SOUTH TO AFFECT MAINLY YAVAPAI AND NORTHERN GILA COUNTY. SINCE TEMPERATURES TODAY ARE COOLER THAN YESTERDAY...EXPECT THUNDERSTORM DEVELOPMENT TO BEGIN A LITTLE SLOWER TODAY...WITH MOST ACTIVITY BEGINNING AFTER THE NOON HOUR. THE MAIN WEATHER THREAT WILL BE HEAVY RAIN WITH THE STRONGER THUNDERSTORMS. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY EXPECT THE MONSOON MOISTURE TO REMAIN OVER THE REGION THROUGH WEDNESDAY WITH AFTERNOON AND EVENING SHOWERS AND THUNDERSTORMS. A FEW STORM COULD PRODUCE LOCALLY HEAVY RAIN AND POSSIBLE FLOODING. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.
The Flagstaff radar (KFSX), 206 km away, was scanning. The volume nearest the first event began at 17:50 UTC.
1 hail. Local standard time, as filed.
3/4 inch diameter hail was reported at the Alpine Ranger Station for half an hour.
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: 5420078.