1 lightning, 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 20, 10:30 AM MST, 3 hours 30 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE FLAGSTAFF AZ 1030 AM MST SUN AUG 20 2006 .SYNOPSIS...MOISTURE WILL CONTINUE TO BE GREATEST OVER EASTERN ARIZONA TODAY WITH SCATTERED AFTERNOON AND EVENING THUNDERSTORMS EXPECTED. ONLY ISOLATED STORMS ARE EXPECTED ELSEWHERE. A HIGH PRESSURE RIDGE EAST OF ARIZONA WILL BRING SOUTHEASTERLY FLOW TO THE STATE BY MONDAY...CONTINUING THROUGH MIDWEEK. THIS WILL LEAD TO AN INCREASE IN MOISTURE AND THUNDERSTORM COVERAGE OVER NORTHERN ARIZONA. && .DISCUSSION...NO UPDATES PLANNED FOR TODAYS GRIDDED AND ZONE FORECASTS AS CURRENT FORECASTS APPEARS TO BE TRACKING WELL WITH CURRENT CONDITIONS AND ANTICIPATED CONDITIONS LATER THIS AFTERNOON. MAIN SYNOPTIC FEATURES ACROSS THE REGION...THERE IS A TROUGH OFF THE CENTRAL CA COAST. THIS TROUGH IS BRINGING A DRY SOUTHWEST FLOW AND CAP TO THE WESTERN 1/2 OF THE CWA TODAY. THERE IS A 500 MB HIGH SITUATED TO THE EAST OVER CENTRAL OK. PW VARIES FROM 0.75-0.80 INCHES ALONG THE NM BORDER TO 0.5 INCHES ALONG THE EASTERN MOJAVE COUNTY BORDER. 50KTS OF FLOW UP AROUND 300 MB IS GENERATED BETWEEN THE TROUGH TO THE WEST AND HIGH PRESSURE TO THE EAST WITH THE STRONGEST UPPER FLOW EAST OF A KPGA TO KPHX LINE. WE ARE ANTICIPATING WEAK ORGANIZED SLOW MOVING THUNDERSTORMS EAST OF A KEAMS CANYON TO PAYSON LINE TODAY PRODUCING AN ISOLD FLOOD POTENTIAL FROM STATIONARY STORMS. MOISTURE OVER THE SOUTHERN 1/2 NAVAJO AND APACHE COUNTIES WILL SLOWLY INCREASE AND SPREAD TO THE NORTHWEST THROUGH THE WEEK. THIS WILL LEAD TO AN INCREASING CHANCE OF AFTERNOON AND EVENING SHOWERS AND THUNDERSTORMS WITH THE INCREASED POTENTIAL FOR ISOLATED HEAVY RAIN AND LOCALIZED FLOODING. && .AVIATION...FOR THE 18Z PACKAGE...EXPECT SCATTERED THUNDERSTORMS TO DEVELOP EAST OF A LINE FROM ABOUT PAYSON TO KAYENTA BEGINNING AROUND 19Z AND CONTINUING UNTIL EARLY EVENING. CEILINGS ASSOCIATED WITH THESE STORMS...WHEN PRESENT...WILL RANGE FROM ABOUT 4500 TO 6000 FEET AGL. WEST OF THIS LINE ONLY ISOLATED STORMS WILL OCCUR. AVIATION DISCUSSION NOT UPDATED FOR AMENDMENTS. && .FGZ WATCHES/WARNINGS/ADVISORIES...NONE. && TC/HOWARD
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE FLAGSTAFF AZ 1000 AM MST SUN AUG 20 2006 AZZ004>018-037>040-210700- 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 SUN AUG 20 2006 THIS HAZARDOUS WEATHER OUTLOOK IS FOR APACHE...COCONINO...NORTHERN GILA...NAVAJO...AND YAVAPAI COUNTIES IN NORTHERN ARIZONA. .DAY ONE...TODAY SCATTERED THUNDERSTORMS CAN BE EXPECTED ALONG AND EAST OF A LINE FROM KEAMS CANYON TO PAYSON WITH ISOLATED THUNDERSTORMS AS FAR WEST TO A LINE RUNNING FROM PAGE TO SELIGMAN. THE MAIN THREAT FROM THESE STORMS WILL BE ISOLATED HEAVY RAIN IN AN AREA FROM THE CHUSKA MOUNTAINS SOUTHWARD ACROSS THE UPPER LITTLE COLORADO RIVER VALLEY...WHITE MOUNTAINS...AND PORTIONS OF THE EASTERN MOGOLLON RIM. STORMS WILL GENERALLY MOVE SLOWLY FROM SOUTHWEST TO NORTHEAST OFF THE HIGHER TERRAIN AND INTO THE LOWER VALLEYS ACROSS NORTHERN ARIZONA. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY THERE WILL BE AN INCREASE IN MOISTURE ACROSS THE WHITES AND PORTIONS OF THE EASTERN LITTLE COLORADO RIVER VALLEY ON MONDAY. THIS MOISTURE WILL CONTINUE TO SPREAD TO THE NORTHWEST AS FAR AS THE GRAND CANYON AND THE KAIBAB PLATEAU BY MID WEEK. THIS WILL LEAD TO AN INCREASING CHANCE OF AFTERNOON AND EVENING SHOWERS AND THUNDERSTORMS WITH THE INCREASED POTENTIAL FOR ISOLATED HEAVY RAIN AND LOCALIZED FLOODING. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.
The Flagstaff radar (KFSX), 181 km away, was scanning. The volume nearest the first event began at 21:01 UTC.
1 lightning. Local standard time, as filed.
Three people sought shelter under a tree during a thunderstorm. Lightning stuck the tree. One person was killed and one person as injured. This happened about 8 miles south of McNary.
As the offices recorded each death: direct deaths were caused by the weather itself, indirect ones by something it set in motion.
| Event | Date | Age | Sex | Where | Kind |
|---|---|---|---|---|---|
| Lightning, Apache | 2006-08-20 | Under Tree | Direct |
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: 5529839.