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.

July 26 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
High pressure across New Mexico and Arizona will expand westward bringing slow warming and drying of monsoonal moisture through Friday. The marine layer and weak onshore flow will keep areas near the coast cooler with areas of night and morning low clouds and fog extending into the far western valleys. For Saturday through early next week…the high pressure will move slowly northward with east to southeast flow aloft developing across Southern California. This will bring cooling to a little below average with a return of monsoonal moisture bringing a chance of thunderstorms…mainly during the afternoon and early evening…and mostly in the mountains and deserts.
SYNOPSIS FROM THE PHOENIX OFFICE
Drier air moving into the region will result in a lower chance of storms for much of the work week. Decreasing cloudiness and moisture will support a warming trend through Thursday with near normal highs. Moisture begins increasing late Thursday and will usher in an increased chance of storms from west to east from Thursday night through the weekend. Subsequently, high temperatures decrease as well…most noticeably over south-central Arizona.
Weather Story Phoenix Station Weather Story San Diego Station
Image for Phoenix Station Weather Story Image for San Diego Station Weather Story

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