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, 2:30 PM MST, 4 hours 53 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE FLAGSTAFF AZ 230 PM MST THU AUG 17 2006 .SYNOPSIS...EXPECT FEWER THUNDERSTORMS THROUGH FRIDAY AS DRIER AIR MOVES ACROSS ARIZONA FROM THE WEST. ON SATURDAY...MOISTURE IS EXPECTED TO MOVE SLOWLY BACK INTO THE AREA FROM THE EAST. THIS WILL LEAD TO AN INCREASE IN THUNDERSTORM COVERAGE THROUGH THE WEEKEND AND EARLY NEXT WEEK. && .DISCUSSION...ISOLATED THUNDERSTORMS DEVELOPED TODAY OVER THE HIGHER TERRAIN EAST OF A PRESCOTT TO PAGE LINE. THESE STORMS WERE MOVING NORTHEAST ABOUT 10 MPH. CONVECTIVE ACTIVITY IS EXPECTED TO LAST INTO THE EVENING HOURS THEN DISSIPATE AFTER DARK. A SHORT WAVE TROUGH THAT MOVED THROUGH THE UPPER GREAT BASIN TODAY WILL CONTINUE MOVING EAST TONIGHT AND FRIDAY. THIS WILL ALLOW THE HIGH PRESSURE RIDGE TO BUILD BACK OVER TEXAS AND NEW MEXICO OVER THE WEEKEND. THE CIRCULATION AROUND THE HIGH WILL INCREASE MOISTURE OVER ARIZONA FURTHER WESTWARD. THIS WILL LEAD TO LOW TO MODERATE THUNDERSTORM ACTIVITY THROUGH THE WEEKEND AND INTO NEXT WEEK. && .AVIATION...FOR THE 00Z PACKAGE...ISOLATED THUNDERSTORMS ARE EXPECTED TO CONTINUE EAST OF A KPRC-KPGA LINE THROUGH 02Z. SCATTERED THUNDERSTORMS ARE EXPECTED OVER THE WHITE MOUNTAINS EARLY THIS EVENING. EXPECT THE STORMS TO DIMINISH AFTER 02Z. ISOLATED STORMS ARE EXPECTED TO DEVELOP AGAIN AFTER 18Z ON FRIDAY. AVIATION DISCUSSION NOT UPDATED FOR AMENDMENTS. && .FGZ WATCHES/WARNINGS/ADVISORIES...NONE. && MAS
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE FLAGSTAFF AZ 1000 AM MST THU AUG 17 2006 AZZ004>018-037>040-180700- 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 WED AUG 17 2006 THIS HAZARDOUS WEATHER OUTLOOK IS FOR APACHE...COCONINO...NORTHERN GILA...NAVAJO...AND YAVAPAI COUNTIES IN NORTHERN ARIZONA. .DAY ONE...TODAY DRIER AIR HAS MOVED OVER MUCH OF NORTHERN ARIZONA FROM THE WEST THIS MORNING. AS A RESULT...EXPECT ONLY ISOLATED THUNDERSTORMS FROM FLAGSTAFF WESTWARD. WIDELY SCATTERED THUNDERSTORMS CAN BE EXPECTED ACROSS NORTHERN GILA COUNTY AND WHITE MOUTAINS. THE MAIN THREAT TODAY WILL BE BRIEF HEAVY RAIN AND THE POSSIBILITY OF FLASH FLOODING IN AREAS WHICH HAVE RECEIVED HEAVY RAIN OVER THE PAST SEVERAL DAYS. STORMS TODAY WILL GENERALLY MOVE FROM SOUTHWEST TO NORTHEAST OFF THE HIGHER TERRAIN AND INTO THE LOWER VALLEYS ACROSS NORTHERN ARIZONA. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY. A SLIGHT INCREASE IN MOISTURE WILL BEGIN ON FRIDAY FROM THE EAST. CONDITIONS WILL RETURN TO NORMAL AS MORE MOISTURE MOVES BACK WEST LATE IN THE WEEKEND...OR EARLY NEXT WEEK. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.
PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
303 PM MST THU AUG 17 2006
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0315 PM DOWNBURST WILLIAMS 35.26N 112.17W
06/24/2006 COCONINO AZ AWOS
WIND GUST TO 72 KNOTS
0505 PM DOWNBURST CHINO VALLEY 34.76N 112.46W
06/24/2006 YAVAPAI AZ TRAINED SPOTTER
WIND GUST OF 68 MPH
&&
MASThe Flagstaff radar (KFSX), 93 km away, was scanning. The volume nearest the first event began at 02:24 UTC.
1 flash flood. Local standard time, as filed.
Flash flooding closed portions of Highway 73 from Canyon Day west to Highway 60 (near Carrizo). Flooding was also reported in Canyon Day Flats and Bear Canyon.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Arizona in 2006Every state in 2006This day in weather historyWarnings in Arizona, August 2006
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: 5529563.