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.

April 13 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
SYNOPSIS FROM THE SAN DIEGO OFFICE
A low pressure trough moving by to the north will bring cooler and breezy weather today, along with a slight chance of light showers this morning west of the mountains and areas of strong winds in the mountains and deserts this afternoon and evening. Fair and seasonal weather will continue this Friday through Monday. The next trough of low pressure to the north brings our next slight chance of showers around Tuesday, followed by dry and warmer weather.

SYNOPSIS FROM THE PHOENIX OFFICE
High pressure aloft will dominate the overall weather pattern across the Desert Southwest into next week. This will bring above normal temperatures and continued dry conditions. Lower desert highs will reach into the upper 80s to lower 90s each day under mostly clear skies. A deep Pacific trough currently moving through northern California into the Pacific Northwest will quickly progress to the northeast today. Southern fringes of the trough will remain well to our north keeping the Desert Southwest under dry southwesterly flow aloft. A tightening surface pressure gradient today in response to strengthening high pressure to our west will bring a breezy to windy day to southeast California and southern Arizona. Most areas will see gusts close to 25 mph this afternoon/early evening with the strongest gusts of 35-40 mph across far southwest Imperial County.
Weather Story Phoenix Station Weather Story San Diego Station
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