A low pressure system continued to move across the western United States and produced windy conditions for a second day in a row across portions of eastern Arizona.
Every event with a place to put it; 5 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 episode as NWS FGZ wrote it up.
A low pressure system continued to move across the western United States and produced windy conditions for a second day in a row across portions of eastern Arizona.
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 Apr 28, 10:50 PM MST, 1 hour earlier.
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</html>HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE FLAGSTAFF AZ 425 AM MST WED APR 28 2010 AZZ004>018-037>040-290500- KAIBAB PLATEAU-MARBLE AND GLEN CANYONS-GRAND CANYON COUNTRY- COCONINO PLATEAU-YAVAPAI COUNTY MOUNTAINS- NORTHEAST PLATEAUS AND MESAS HWY 264 NORTHWARD-CHINLE VALLEY- CHUSKA MOUNTAINS AND DEFIANCE PLATEAU- LITTLE COLORADO RIVER VALLEY IN COCONINO COUNTY- LITTLE COLORADO RIVER VALLEY IN NAVAJO COUNTY- LITTLE COLORADO RIVER VALLEY IN APACHE COUNTY- WESTERN MOGOLLON RIM-EASTERN MOGOLLON RIM-WHITE MOUNTAINS- NORTHERN GILA COUNTY-YAVAPAI COUNTY VALLEYS AND BASINS- OAK CREEK AND SYCAMORE CANYONS-BLACK MESA AREA- NORTHEAST PLATEAUS AND MESAS SOUTH OF HWY 264- 425 AM MST WED APR 28 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EAST CENTRAL ARIZONA...NORTH CENTRAL ARIZONA...NORTHEAST ARIZONA AND WEST CENTRAL ARIZONA. .DAY ONE...TODAY AND TONIGHT VERY WINDY CONDITIONS ARE LIKELY TODAY AS THE NEXT STORM SYSTEM MOVES INTO THE REGION. WINDS MAY GUST TO 55 TO 70 MPH ALONG AND NORTH OF THE MOGOLLON RIM WHERE A HIGH WIND WARNING REMAINS IN EFFECT THROUGH THIS EVENING. A WIND ADVISORY IS IN EFFECT FOR YAVAPAI AND GILA COUNTIES WITH GUSTS IN THE 40 TO 50 MPH RANGE. ANOTHER ROUND OF BLOWING DUST IS LIKELY OVER EAST CENTRAL ARIZONA... INCLUDING THE INTERSTATE 40 CORRIDOR. THE COMBINATION OF STRONG WINDS AND LOW RELATIVE HUMIDITIES WILL RESULT IN CRITICAL FIRE WEATHER CONDITIONS AND A RED FLAG WARNING HAS BEEN ISSUED FOR AREAS BELOW 6000 FEET ELEVATION FOR TODAY. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY GUSTY WINDS WILL PERSIST OVER EASTERN ARIZONA THURSDAY...AND A WIND ADVISORY WILL BE IN EFFECT. OTHERWISE...COOL AND UNSETTLED CONDITIONS WILL DEVELOP FROM THURSDAY INTO THE WEEKEND...WITH A CHANCE OF RAIN AND SNOW SHOWERS AT TIMES. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES. JJ
The national radar mosaic for the moment the first event began.
3 high wind, 2 dust storm. Local standard time, as filed.
The Show Low Airport ASOS reported peak sustained winds of 45 MPH and peak wind gusts of 61 MPH.
The ASOS at the St Johns Airport reported reduced visibility (in dust) for close to 6 hours. The visibility dropped down to 1 and 1/4 miles at times.
The St Johns Airport reported frequent gusts above 58 MPH for at three and a half hours. The peak wind gust was 61 MPH with a sustained wind of 46 MPH.
The Winslow Airport ASOS reported a peak wind gust of 64 MPH.
Strong wind kicked up dust for a second day in a row in Winslow. The ASOS reported three and a half hours of reduced visibility. The lowest visibility was 1 and 1/2 miles.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Arizona in 2010Every state in 2010This day in weather historyWarnings in Arizona, April 2010
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: 225367, 225361, 225359, 225365, 225363.