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.

April 7 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
SYNOPSIS FROM THE SAN DIEGO OFFICE
A fair but cooler day today will be the prelude to a weak storm system moving through Southern California tonight and Saturday. Strong winds in the mountains and deserts are expected afternoons and evenings. Showers will move through the region tonight through Saturday morning. Fair and seasonal weather will follow Sunday through at least Wednesday. Another weak storm system could arrive later in the week for the next chance of showers.

SYNOPSIS FROM THE PHOENIX OFFICE
A Pacific low pressure system and associated front will swing into the western states this weekend resulting in strengthening winds on Friday and especially Saturday. Precipitation chances will be focused across the northern half of Arizona, and will be minimal across the lower deserts. Much cooler temperatures will filter into the region Sunday before another modest warming trend next week. Westerly surface winds will also begin to strengthen this afternoon across southeast California, and become more widespread on Saturday as deep-layer flow increases in concert with the approaching trough. The current forecast calls for sustained wind speeds of 20-25 mph, with gusts of 30-40 mph, on Saturday area-wide. Will have to continue to monitor for the potential for advisory criteria being reached, especially across parts of southeast California.
Weather Story Phoenix Station Weather Story San Diego Station
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