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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 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
A low pressure trough will develop over the West for the remainder of the week. The trough will increase onshore flow and build the marine layer for much cooler weather. Some light showers or drizzle are possible along and west of the mountains nights and mornings as the marine layer deepens to the coastal slopes. It will become breezy over the mountains and deserts with a strengthening sea breeze in the afternoons and evenings. A little warmer again early next week, then noticeably cooler with as autumn arrives later in
the week.
Storm chances will be slight and primarily confined to the higher terrain of Arizona today. On Thursday, a weather system moving into the western states will lead to a cooling trend. There will also be a slight chance of thunderstorms over south-central Arizona...including the lower deserts Highs in mid and upper 90s will prevail through the weekend and into early next week. Slight chances for storms will return to Arizona Sunday through Tuesday...mainly eastern portions.
Weather Story Phoenix Station Weather Story San Diego Station
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