AIR POLLUTION
CONTROL DISTRICT

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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.

December 1 2016
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
SYNOPSIS FROM THE SAN DIEGO OFFICE
A little cooler with scattered high clouds today. An upper low will develop over northern Baja and with strong surface high pressure building into the Great Basin, the stage will be set for a strong Santa Ana wind event to develop late tonight and continue through Saturday. The greatest impact will be across Orange County to the Inland Empire and adjacent mountain and pass locales. Gusty northeast winds will begin to weaken late Saturday. Warmer with lighter winds Sunday. Cooler early next week with gusty west to northwest winds, mainly in the mountains and adjacent desert areas.

SYNOPSIS FROM THE PHOENIX OFFICE
Dry northerly flow aloft will result in below normal temperatures and low humidity today. Another dry and cold weather disturbance is forecast to move into the region Friday and Friday night. A slight chance of showers are forecast over portions of south central Arizona, generally from Phoenix eastward Friday evening. However strong north winds are forecast to develop over southeast California and Colorado River Valley Friday and Saturday. Mostly clear skies and warmer temperatures are expected this weekend through early next week. Another Pacific weather system is forecast to move into the western States, including portions of Arizona next Tuesday and Wednesday.
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