Late monsoon thunderstorms developed across the central deserts during the afternoon hours on September 14th. As is typical with monsoon thunderstorms, a a few of the storms produced strong gusty outflow winds in excess of 50 mph. The gusty winds managed to stir up significant amounts of dust which led to dust storm conditions. Dust storms formed south of Phoenix, from around Gila Bend east through Ak-Chin and northeast towards Sun Lakes. Visibility lowered well below one quarter of a mile in a number of locations, falling as low as 25 feet near the town of Ak-Chin. Fortunately there were no reports of accidents or injuries as a result of the sharply reduced visibility. Two Dust Storm Warnings were issued as a result of the dense blowing dust.

Dust Storm in SOUTHEAST VALLEY/QUEEN CREEK, ARIZONA
From 14-SEP-19 15:30:00 to 14-SEP-19 16:30:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Monsoon thunderstorms developed to the south and southeast of Phoenix during the afternoon hours on September 14th and some of the stronger storms produced gusty outflow winds up to or in excess of 40 mph. The strong winds stirred up significant amounts of dust, leading to dust storm conditions that affected areas around the community of Sun Lakes. At 1549MST a trained spotter located 5 miles east of Sun Lakes reported a dust storm with visibility lowered to just 100 feet. No accidents were reported due to the sharply reduced visibility.

Dust Storm in AGUILA VALLEY, ARIZONA
From 14-SEP-19 17:00:00 to 14-SEP-19 18:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Monsoon thunderstorms developed across the central deserts during the afternoon on September 14th and some of the stronger storms produced strong gusty outflow winds. The gusty winds picked up significant amounts of dust and created dust storm conditions that affected the deserts around the town of Gila Bend. According to a trained spotter located about 2 miles northeast of Gila Bend, visibility dropped to 1/8th of a mile in a dust storm at 1753MST. A Dust Storm Warning had been issued earlier, at 1700MST and was in effect at the time of the report. No accidents were reported due to the sharply reduced visibility.

Dust Storm in NORTHWEST PINAL COUNTY, ARIZONA
From 14-SEP-19 16:10:00 to 14-SEP-19 17:15:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Monsoon thunderstorms developed across the central deserts as well as areas to the south of Phoenix during the afternoon hours on September 14th. The stronger storms managed to generate very strong and gusty outflow winds that exceeded 50 mph at times. The strong winds stirred up significant amounts of dust, leading to dust storm conditions that affected the communities of Maricopa and Ak-Chin to the south of Phoenix. According to a report from the public, at 1634MST winds gusting over 50 mph caused a dust storm 3 miles east of the town of Ak-Chin. Visibility dropped as low as 25 feet in the dust storm. A Dust Storm Warning had been issued and was in effect at the time of the report. No accidents or injuries were reported as a result of the sharply reduced visibility. Additionally, at about the same time a spotter 3 miles southeast of the town of Maricopa reported visibility down to one quarter mile in a dust storm at the intersection of Bowlin and Porter Roads.