AIR POLLUTION
CONTROL DISTRICT

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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.

September 26 2017
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
SAN DIEGO OFFICE - SYNOPSIS
High pressure over the Great Basin will bring offshore flow through Wednesday with sunny, warm days and cool nights. Winds will be gusty at times in the mountains, foothills and the Inland Empire. Warmer Thursday and Friday with lighter winds. Later today, a weak eddy circulation offshore may bring a return of coastal low clouds and fog each night and morning through Thursday. Cooler by the weekend as onshore flow returns. Surface pressure gradients were holding very weakly onshore KSAN to the lower deserts, and about 6 MBS from SW NV. N-NE winds continued in some mountain areas at 3 AM PDT with local peak gusts to 25 MPH, but in general, winds were light. Gusty N-NE winds are expected again this morning.

PHOENIX OFFICE - DISCUSSION
Under sunny skies, temperatures will slowly warm over the next few days though readings will remain slightly below average. An area of low pressure may pull moisture back into eastern Arizona by the middle and end of the week supporting some late season showers and storms mainly in the higher elevations. Warmer temperatures will materialize by the end of the work week and persist through early next week.
Weather Story Phoenix Station Weather Story San Diego Station
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