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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 22 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
Strengthening high pressure aloft will bring a heat wave to inland areas through this weekend. Coastal clouds will be patchy during the nights and mornings. This will be followed by cooler but still seasonably warm weather next week. A minor monsoonal moisture surge may impact the region around mid next week with increasing cloud cover and a slight chance of mountain thunderstorms

The upper-level ridge over the Southwest will continue to expand and shift westward to settle over SoCal through the weekend. This will bring dangerously hot weather to inland locations, with today likely to be the hottest day. Heights fall slightly for Saturday, though most inland areas will experience little to no relief as temperatures remain high through Sunday.

By the middle of next week, the global models are indicating the potential for a minor intrusion of monsoonal moisture into SE California. Mid-level moisture from remnant tropical systems well out in the Pacific may also get pulled into SoCal. These two moisture sources should be enough to bring mid and high-level cloudiness to the area, with a slight chance of afternoon thunderstorms over the mountains and deserts. Temperatures will still be on the warm side for mid to late next week, though closer to normal. However, the moisture surge will make it feel rather sticky as surface RH values increase for much of the area.

Very hot. That describes the weather overall for today and tomorrow. Temperatures will reach excessive levels and, if proper precautions are not taken, could become deadly. Temperatures will cool a bit Sunday, but still remain fairly hot into next week, as thunderstorm chances return to the forecast. The elevated storm chances will continue through at least the following week
Weather Story Phoenix Station Weather Story San Diego Station
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