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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.

August 2 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
Monsoonal moisture will continue a chance of afternoon and early evening thunderstorms for the mountains and deserts into Wednesday or Thursday. For Friday into early next week...a trough of low pressure near the West Coast will bring drier southwest flow aloft and lower inland humidities. High temperatures will be near to slightly below average. The marine layer and weak onshore flow will bring areas of night and morning coastal low clouds and fog extending locally inland

The chance for afternoon and early evening thunderstorms will continue for the mountains and deserts through Wednesday and possibly Thursday. The higher resolution models continue to show the most likely areas for afternoon thunderstorms being near the mountain ridge tops onto the desert slopes of the mountains and in the desert areas north of the San Bernardino Mountains. Coverage and impacts are not expected to be too different from recent days with continuing minor day to day differences. Isolated flash flooding is possible from thunderstorms

A excessively humid monsoon airmass will continue to cover the region today, with the best chance of afternoon and evening thunderstorms over central and eastern Arizona. A drier and more stable airmass will begin to spread into the area from the west, pushing thunderstorm activity into eastern Arizona Wednesday and Thursday. An even drier and warmer airmass will cover the region Thursday through next Tuesday, bringing a temporary end to thunderstorm chances
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