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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.

June 24 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
Deep marine layer and strong inversion with 13 deg C delta T value. Inland valleys have cleared out nicely this morning but the coastal strip will likely remain scattered to broken through at least early afternoon. Have lowered temps a bit near the coast and increased cloud cover. No other significant changes. Airmass changes little through Saturday, then a big warmup later this weekend into early next week, due to strengthening 4 Corners upper high and elongated ridge across California

A potent trough over the Pacific Northwest will temporarily flatten the Four Corners ridge today. It`s impacts here in SoCal will be primarily as a contributer to gusty northwest winds this afternoon and evening in the mountains and deserts. The trough has also brought drier air into the San Bernardino Mountains and Deserts this morning where dewpoints were 10-20 degrees lower than yesterday morning

Monsoon moisture will increase in the prevailing southeast flow around the east-west oriented upper ridge, and there will be a gradual increase in humidities over the mountains and deserts.

A very warm air mass will keep temperatures above normal through at least the first half of next week. A gradual increase in moisture will seep into portions of Arizona later this week and into next week leading to a threat for showers and thunderstorms. Rainfall will initially be limited to high terrain areas, then finally move towards lower desert communities as we move into next week.
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