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.

June 13 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
Temperatures will increase this week as high pressure builds over the Southwest. The high stalls over Arizona next week, setting the stage for a long duration heat event that will continue through next week. A shallow marine layer will keep the coastal areas cooler with areas of night and morning clouds and fog. The big story though will be the heat wave from Friday through next week. Desert highs will range from 110 to 115 in the lower deserts, and from 105-110 in the upper deserts. Heat Warnings will likely be needed in these areas, and may be needed as early as Friday. Once issued, they will likely be in effect for the deserts through at least the middle of next week.
SYNOPSIS FROM THE PHOENIX OFFICE
A Pacific weather system will exit the western states today, however slightly below normal temperatures will persist. High pressure building later this week will result in continued dry weather, but substantial warming with temperatures approaching the 110 degree mark by Thursday. As this high pressure system strengthens into the weekend, temperatures will climb further with some of the warmest locations potentially exceeding 115 degrees by Sunday. After a surprisingly cool day for mid June on Monday, things will start to warm up quickly and end up in a full blown heat wave starting this weekend into next week. Confidence in the heat wave is high, but the exact onset and the duration is more uncertain. Highs Friday will likely top out in a 111-114 degree range with similar readings for Saturday but maybe adding a degree.
Weather Story Phoenix Station Weather Story San Diego Station
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