After a brief break, another push of monsoon moisture fueled another outbreak of thunderstorms across the Mojave Desert and southern Great Basin. Many storms produced severe weather and flash flooding.

Thunderstorm Wind in MOHAVE, ARIZONA
From 17-JUL-18 19:33:00 to 17-JUL-18 19:33:00 (MST-7)
Location: LITTLEFIELD
Magnitude: 53.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Two stations recorded gusts to 61 mph at the same time.

Thunderstorm Wind in MOHAVE, ARIZONA
From 18-JUL-18 00:35:00 to 18-JUL-18 00:35:00 (MST-7)
Location: (LHU)LAKE HAVASU CIT
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

This gust occurred at the Lake Havasu City Airport (KHII).

Flash Flood in MOHAVE, ARIZONA
From 18-JUL-18 16:42:00 to 18-JUL-18 18:30:00 (MST-7)
Location: (IGM)MOJAVE CO ARPT
Flood cause: Heavy Rain
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

DW Ranch Road was closed due to flooding.

Hail in MOHAVE, ARIZONA
From 18-JUL-18 17:21:00 to 18-JUL-18 17:24:00 (MST-7)
Location: (IGM)MOJAVE CO ARPT
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

One inch hail fell on I-40 at Exit 66, and a spotter one mile to the southeast estimated 0.75 inch hail two minutes later.

Dust Storm in NORTHWEST DESERTS, ARIZONA
From 18-JUL-18 17:35:00 to 18-JUL-18 17:42:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Dust storm conditions reduced visibility to a quarter mile in Kingman.

Dust Storm in NORTHWEST DESERTS, ARIZONA
From 19-JUL-18 18:30:00 to 19-JUL-18 20:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Dust storm conditions reduced visibility to less than a quarter mile 18 miles NW of Valentine, and also in and near Dolan Springs.

Thunderstorm Wind in MOHAVE, ARIZONA
From 19-JUL-18 19:25:00 to 19-JUL-18 19:25:00 (MST-7)
Location: LITTLEFIELD
Magnitude: 54.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Dust Storm in NORTHWEST DESERTS, ARIZONA
From 21-JUL-18 08:40:00 to 21-JUL-18 09:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Dust storm conditions reduced visibility below a quarter mile in and near Golden Valley.

Flash Flood in MOHAVE, ARIZONA
From 21-JUL-18 09:45:00 to 21-JUL-18 11:00:00 (MST-7)
Location: GRIFFITH
Flood cause: Heavy Rain
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Department of Highways

Oatman Highway was closed due to flooding.

Thunderstorm Wind in MOHAVE, ARIZONA
From 21-JUL-18 09:00:00 to 21-JUL-18 12:00:00 (MST-7)
Location: WILLOW BEACH
Magnitude: 50.00 MG
Property damage: 250.00K
Crop damage: 0.00K
Reported by: Park/Forest Service

Thunderstorm winds swamped a total of 23 boats on Lakes Mead, Mohave, and Havasu. Three buoys on and near Lake Mohave reported wind gusts of 51 to 57 mph.
It cannot be determined how many of the swamped boats were technically in Arizona, Nevada, or California. All 23 are included only in this report.

Dust Storm in NORTHWEST DESERTS, ARIZONA
From 17-JUL-18 15:36:00 to 17-JUL-18 15:50:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Dust storm conditions reduced visibility to a quarter mile in Kingman.

Flash Flood in MOHAVE, ARIZONA
From 17-JUL-18 16:13:00 to 17-JUL-18 17:54:00 (MST-7)
Location: (IGM)MOJAVE CO ARPT
Flood cause: Heavy Rain
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Department of Highways

DW Ranch Road was closed due to flooding.