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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 9 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
A trough of low pressure along the West Coast will keep dry southwest flow aloft and below average temperatures over much of Southern California through Thursday. The marine layer and onshore flow will continue areas of coastal low clouds and patchy fog each night and morning, extending into the valleys. Much warmer by the weekend as high pressure rebuilds

The longwave trough along the West Coast is still forecast to reach maximum amplitude on Wed, then slowly retreat Thu, and move completely out of the picture late in the week. By Fri, a high pressure ridge will begin to build northward from along 30N. This process will continue through next week with an eventual 597 DM upper-level high center forecast by Thu offshore of NoCal.

This means, enjoy the cooler conditions in place over the next couple of days because we will be trending back to more typical hot summer conditions over the weekend and through next week. There may be more high clouds and a chance for some mountain and desert thunderstorms as well. The set-up is not ideal for a solid monsoonal push, so any activity looks spotty and confined to the mountains beginning on Wednesday of next week

A return to more extensive thunderstorm activity will occur over central and eastern Arizona later today through Thursday as thicker moisture moves into Arizona. Any storms that develop will have the potential for strong winds and heavy rain. A warming and drying trend will begin Friday and continue through the weekend as high pressure builds across the region
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