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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.

May 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
High pressure aloft will rebuild over the West this holiday weekend bringing a warming trend and gradually less coastal cloudiness each night and morning. Slightly cooler weather expected toward the middle of next week.

Mountains/Deserts...Areas of SW-W surface wind gusts 30-40 kt along the desert slopes/foothills and through passes will continue this afternoon, with moderate to strong up and downdrafts, along with with pockets of wind shear over and NE/E of the mountains. Winds will weaken slightly tonight.

Dry and tranquil weather will persist into the weekend with afternoon high temperatures very typical for the end of May into the 90s and lower 100s. Temperatures will warm somewhat into the beginning of next week with some scattered mountain storms possible by the middle of the week

A temporary cool down today and Saturday will give way to warming temperatures and above normal highs starting Sunday. The cool down is taking place because of a large scale troughing that moved into the Western U.S. A significant shortwave trough embedded within the large scale flow will move through the Great Basin into tonight while another barely noticeable is currently moving through Arizona. Very dry conditions over the region will keep skies clear despite the shortwave trough passage. The area will also have to contend with another breezy to windy day today as surface low pressure deepens over the Great Basin providing a modestly strong northwest to southeast pressure gradient. Wind gusts this afternoon will approach 30 mph in many locations, but higher gusts are expected over higher terrain locations of southeast California and eastern Arizona. This has also prompted a Wind Advisory to be issued through early Saturday morning for far southwest Imperial County. Very little change in the forecast has been made through the weekend and the previous forecast still applies
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