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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.

March 16, 2018 to March 19, 2018
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
Western Imperial County - Showers within the San Diego mountains will move southeast overnight. Visibility may lower within the mountain passes and slopes through Saturday morning. Otherwise scattered clouds and unrestricted visibility.

Central to Eastern Imperial County- Southerly to westerly winds this morning at 5 to 11 mph under breezy to windy conditions by early afternoon with gusts of 25 to 28 mph.

Tranquil and cool weather will prevail today. The next round of precipitation will arrive this evening into Orange and San Bernardino and western Riverside counties then slide southeast overnight. Cold air aloft will lead to convective shower activity in bands ahead of a weak cold front, which will lead to moderate shower activity. Snow will fall above 5,000 feet tonight

Precipitation will lessen by Saturday morning. However, another shortwave will move by Saturday night with residual moisture. Scattered showers will occur Saturday through Saturday night within the mountains where snow will fall above 4,000 feet Saturday through Saturday night. The trough will move out Sunday followed by dry weather and warming temperatures for Monday.

Winter Weather Advisory in effect through Sunday for Riverside, San Bernardino and San Diego county mountains.

Dry westerly flow aloft today will bring near seasonal normal high temperatures along with partly sunny skies. Another weather system Saturday night into Sunday will bring rain back into the forecast, with greatest rain chances from Maricopa County eastward on Saturday night. Below normal temperatures through Monday should warm back into the 80s for the middle of next week
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