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 21 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
WIND ADVISORY
A wind advisory has been issued by the San Diego and Phoenix Weather offices.

WIND ADVISORY REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 1 AM PDT FRIDAY

Western Imperial County and portions of eastern Riverside county, Joshua Tree National Park and San Diego mountains and deserts

Sustained westerly winds 25 to 35 mph with gusts of 40 to 50 mph and West to southwest 20 to 30 mph with gusts of 40 to 50 mph for mountains and passes

SAN DIEGO OFFICE - SYNOPSIS
A trough of low pressure will drop into Southern California today and linger through Saturday. Today it will bring cooler and cloudier weather, some showers from the coast to the mountain crests, and areas of strong winds in the mountains and deserts. As the trough departs over the weekend, offshore flow will develop to bring clear skies and a warming trend next week.

PHOENIX OFFICE - DISCUSSION
An area of low pressure and associated cold front will sweep through the region over the next two days. The end result will be substantially cooler temperatures along with occasionally breezy conditions. Precipitation chances will be negligible and limited to only some sprinkles over the higher terrain.

The strong cool season frontal passage will generate windy conditions today and overnight. Wind gusts 28-40 mph will be possible from west-southwest by the afternoon. Skies will remain mostly clear and winds will subside overnight.
Weather Story Phoenix Station Weather Story San Diego Station
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