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Old Advisory Events

The information herein is NOT intended for use as a weather forecast. The Air District DOES NOT forecast but solely compiles information from both the Phoenix and San Diego National Weather Offices to relay information concerning potential changes in ambient air concentrations that may impact the public.

September 8 2017
Be Advised
High wind levels have the potential to suspend particulate matter into the air. High levels of PM10 may pose an impact to public health. It is recommended that active children and adults, and people with respiratory disease, such as asthma, limit their outdoor activities.

Potential increases in PM10 concentrations may increase to moderate or unhealthy level.

Imperial County Weather Synopsis
As of 5 pm September 8 a Dust Storm Warning remains in effect for portions of Eastern Riverside County, the Colorado River Valley, western portions of La Paz and northwestern portions of Yuma County. Focus for travel along Interstate 10 from east of Joshua Tree through Blythe, CA and into western Arizona. The Dust Storm Warning is set to expire at 5pm. However, a BLOWING DUST ADVISORY remains in effect until 8 pm. Gusts over 40 mph could severely reduce visibility.

A FLASH FLOOD WATCH continues through much of the weekend. Ample moisture and favorable conditions will lead to scattered showers and thunderstorms across much of southern Nevada, northwest Arizona, and southeast California through the weekend. The Flash Flood Watch remains in effect through late Sunday night. A Flash Flood Warning remains in effect for south central Imperial County until 515 pm Friday. As of 5pm, severe thunderstorms continue to drift through southeastern California.

A trough of low pressure will bring cooler weather through Saturday, but also moisture for some thunderstorms during afternoons and early evenings in the mountains and deserts. The moisture flows westward Sunday over the entire region for widespread showers and thunderstorms in all areas. Dry and seasonal weather will develop Monday and continue the rest of next week while coastal clouds increase.
Deep southerly flow will increase moisture levels as well as shower and thunderstorm chances across the region through late Saturday. Today will likely be a very active day across southeast California and southwest Arizona with numerous storms, strong winds, and locally heavy rains are possible. At least scattered showers and storms will persist through Saturday with gradual lowering of storm chances into Sunday. Drier conditions and a warming trend will return during the early and middle parts of next week as strong high pressure builds back over the area.
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