A low pressure center moving across the western United States produced strong winds and significant blowing dust across northern Arizona. The winds caused power outages and the dust caused road closures.

High Wind in EASTERN MOGOLLON RIM, ARIZONA
From 28-APR-10 12:24:00 to 29-APR-10 03:24:00 (MST-7)
Magnitude: 55.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: RAWS

The Limestone RAWS reported a peak wind gust of 63 MPH.

High Wind in BLACK MESA AREA, ARIZONA
From 28-APR-10 16:00:00 to 29-APR-10 03:45:00 (MST-7)
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Wind gusts to 65 MPH were estimated across the area using ASOSs in adjoining zones.

High Wind in NORTHEAST PLATEAUS AND MESAS SOUTH OF HIGHWAY 264, ARIZONA
From 28-APR-10 16:00:00 to 29-APR-10 03:00:00 (MST-7)
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Winds gusts to 65 MPH were estimated by using ASOS readings in adjoining zones.

Dust Storm in LITTLE COLORADO RIVER VALLEY IN NAVAJO COUNTY, ARIZONA
From 28-APR-10 11:00:00 to 29-APR-10 00:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Blowing dust reduced the visibility down to 10 feet at times across the Little Colorado River Valley at times from late morning through late evening. Interstate 40 was close for much of that time.

High Wind in KAIBAB PLATEAU, ARIZONA
From 28-APR-10 04:04:00 to 28-APR-10 18:00:00 (MST-7)
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

An automated weather station reported peak wind gusts of 58 MPH.

High Wind in MARBLE CANYON AND GLEN CANYON, ARIZONA
From 28-APR-10 10:05:00 to 28-APR-10 18:00:00 (MST-7)
Magnitude: 56.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

An automated weather station in House Rock Valley reported a peak wind gust of 64 MPH.

High Wind in GRAND CANYON COUNTRY, ARIZONA
From 28-APR-10 13:09:00 to 28-APR-10 18:00:00 (MST-7)
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Estimated wind gusts reached 58 MPH.

Dust Storm in NORTHEAST PLATEAUS AND MESAS SOUTH OF HIGHWAY 264, ARIZONA
From 28-APR-10 13:00:00 to 28-APR-10 23:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Blowing dust reduced the visibility down to 30 feet at times in Dilkon and across the area at times from late morning through late evening.

Dust Storm in CHINLE VALLEY, ARIZONA
From 28-APR-10 13:00:00 to 28-APR-10 22:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Blowing dust reduced the visibility less than 100 feet at times in Kayenta, and Many Farms, and across the Chinle Valley from early afternoon morning through late evening. Interstate 40 was close for much of the time.

High Wind in COCONINO PLATEAU, ARIZONA
From 28-APR-10 15:09:00 to 28-APR-10 20:09:00 (MST-7)
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Unknown

Winds gusts were estimated to have reached 58 MPH.

High Wind in NORTHEAST PLATEAUS AND MESAS FROM HIGHWAY 264 NORTH, ARIZONA
From 28-APR-10 10:05:00 to 28-APR-10 18:05:00 (MST-7)
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Wind gusts to 60 MPH were estimated across the area based on the mesonet site at Tuba City just outside of this zone.

High Wind in CHUSKA MOUNTAINS AND DEFIANCE PLATEAU, ARIZONA
From 28-APR-10 15:58:00 to 28-APR-10 19:58:00 (MST-7)
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

The Window Rock ASOS reported wind gusts to 60 MPH.

High Wind in LITTLE COLORADO RIVER VALLEY IN APACHE COUNTY, ARIZONA
From 28-APR-10 15:18:00 to 28-APR-10 23:18:00 (MST-7)
Magnitude: 53.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

The peak wind gust at the St Johns Airport was 61 MPH.

High Wind in WESTERN MOGOLLON RIM, ARIZONA
From 28-APR-10 05:30:00 to 28-APR-10 18:30:00 (MST-7)
Magnitude: 53.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Doney Park had wind gusts to 61 MPH.

Dust Storm in LITTLE COLORADO RIVER VALLEY IN COCONINO COUNTY, ARIZONA
From 28-APR-10 11:00:00 to 28-APR-10 23:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Blowing dust reduced the visibility down to 10 feet at times across the Little Colorado River Valley at times from late morning through late evening. Interstate 40 was close for much of the time.

High Wind in LITTLE COLORADO RIVER VALLEY IN NAVAJO COUNTY, ARIZONA
From 28-APR-10 15:53:00 to 29-APR-10 02:56:00 (MST-7)
Magnitude: 70.00 MG
Property damage: 100.00K
Crop damage: 0.00K
Reported by: ASOS

The wind at the Winslow Airport gusted over 58 MPH close to 11 hours. There were power outages and power poles were blown down in Winslow.

High Wind in CHINLE VALLEY, ARIZONA
From 28-APR-10 12:00:00 to 28-APR-10 18:00:00 (MST-7)
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

The wind gusts were estimated at 55 to 60 MPH across at Canyon de Chelly.

High Wind in LITTLE COLORADO RIVER VALLEY IN COCONINO COUNTY, ARIZONA
From 28-APR-10 11:20:00 to 28-APR-10 18:20:00 (MST-7)
Magnitude: 63.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

The ADOT anemometer at Two Guns measured a peak wind gust of 73 MPH.Tuba City had wind gusts to 60 MPH.