Friday morning haze started with monsoon storms in Cabo, Hermosi - FOX Carolina 21

Friday morning haze started with monsoon storms in Cabo, Hermosillo

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Morning haze over southeast Arizona, including Tucson, blocked views of the mountains. This haze came from Mexico, partly pushed into Arizona from a strong monsoon storm complex that damaged parts of Cabo San Lucas Thursday morning and a second smaller, but still very strong storm cell, near Hermosillo, Mexico Thursday afternoon.

A large area of organized storms called a Mesoscale Convective System (MCS) moved west from mainland Mexico and over the tip of the Baja Peninsula Thursday morning. This MCS helped trigger a surge of tropical moisture moving north over the Gulf of California and into northern Mexico. The mass of extremely muggy monsoon air helped to set off more storms Thursday afternoon near Hermosillo.  One powerful storm cell kicked up dust and dirt from the desert, which then mixed into the air and moved north into Arizona early this morning. 

Dew points increased overnight as the dust arrived. Visibility was down to about 5 miles at 6 AM in Tucson. The haze was not powerful enough to cause issues on the roads, but it did block views of the mountains from many locations in Southeast Arizona. 


The MCS left behind damage in Cabo San Lucas. A Canadian vacationer posted on TripAdvisor.com "around 7:30 am today a wicked black cloud storm rumbled in from the northwest and created havoc. We are on a beach front penthouse on Medano beach and the damage is significant. Mango deck, office the swing bar are all damaged. Here at Cabo villas we lost power for about 90 minutes. The win blew our patio furniture away and all the pillows and cushions. During the peak of the storm the patio doors were rattling severely and my wife and I took a step back. It was something to see."

The dust and dirt also had an impact on air quality. The levels of dust and dirt in the air reached Unhealthy levels at around 8:30 AM. Check the latest air quality numbers in Tucson at AirInfoNow.org.

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