Strong thunderstorms developed across the southwestern Arizona deserts during the evening hours on July 9th and some of the stronger storms generated outflow winds in excess of 60 mph. The strong and gusty winds led to the creation of dust storm conditions which affected motorists along the Interstate 8 corridor across southern Yuma County. Some motorists reported visibility lowering to around 100 feet in dense blowing dust. The strong wind gust reports were all based on weather sensor readings, such as from AWOS weather stations. Fortunately no reports of damage were received due to the gusty winds, and no accidents occurred as a result of the dust storm conditions.

Thunderstorm Wind in YUMA, ARIZONA
From 09-JUL-18 20:48:00 to 09-JUL-18 20:48:00 (MST-7)
Location: MARINE AIR STATION
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Isolated thunderstorms developed across portions of far southwest Arizona, including the area around Yuma, during the evening hours on July 9th. A few of the storms generated very strong and gusty outflow winds. At 2048MST the Yuma AWOS weather station, located about 11 miles southwest of the Fortuna Foothills, measured a wind gust to 58 mph. No damage was reported in the area.

Thunderstorm Wind in YUMA, ARIZONA
From 09-JUL-18 19:52:00 to 09-JUL-18 19:52:00 (MST-7)
Location: YUMA PROVING GROUND
Magnitude: 54.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Isolated thunderstorms developed over the deserts of far southwest Arizona during the evening hours on July 9th. Some of the stronger storms produced strong and gusty outflow winds. According to a mesonet weather station report, at 1952MST a wind gust of 62 mph was measured at a location about 12 miles northwest of Tacna. No damage was reported in the area.

Dust Storm in YUMA, ARIZONA
From 09-JUL-18 20:00:00 to 09-JUL-18 21:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorms developed across far southwest Arizona during the evening hours on July 9th, and they generated gusty outflow winds measured to be in excess of 60 mph at times. The strong winds created areas of dense blowing dust that affected motorists driving on the Interstate 8 corridor east of Yuma. According to a trained weather spotter located 1 mile north of the Fortuna Foothills, at 2036MST dense blowing dust created a dust storm lowering visibility to around 100 feet. This could be seen in a social media video. A Dust Storm Warning was in effect at the time of the report and the warning continued until 2100MST. No accidents were reported due to the hazardous dust storm conditions.

Dust Storm in GILA RIVER VALLEY, ARIZONA
From 09-JUL-18 19:25:00 to 09-JUL-18 21:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Strong thunderstorms developed across far southwest Arizona during the evening hours on July 9th; some of the stronger storms generated gusty outflow winds measured in excess of 60 mph. The strong winds generated areas of dense blowing dust which resulted in a dust storm that affected motorists on the Interstate 8 corridor to the east of Yuma. According to two trained weather spotters, between about 1945MST and 2000MST a dust storm resulted in visibility dropping to nearly 100 feet in dense blowing dust. One spotter was located about 3 miles northeast of Tacna and the other was 2 miles southwest of Tacna. A Dust Storm Warning had been issued at 1925MST for the area and it remained in effect through 2100MST. Fortunately, no accidents or injuries were reported as a result of the hazardous dust storm conditions.