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.
| January 19 2017
|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 very stormy pattern will begin today across Southern California. The first of several waves of stormy weather will arrive today bringing rain, mountain snow, and strong winds. The next wave will move through Friday with even more rain and mountain snow, along with stronger winds. There is a chance of thunderstorms today and Friday. On Sunday the next system arrives and continues possibly into Tuesday. Dry weather is expected by midweek.
The rain has begun to move into the region this morning right on schedule. This first band of rain will track through during the morning, followed by scattered showers this afternoon and evening. There is a slight chance of thunderstorms mainly during the morning today. The snow level will be around 5500 feet. On Friday the next wave will arrive. This one is wetter and windier and lasts pretty much all day Friday into early Saturday. A few thunderstorms are possible again. The snow level at 5500 continues, but drops to 4500 Friday night. Winds will be strong in the mountains and deserts with top gusts exceeding 65 mph. A break in the action arrives Saturday afternoon and night. The next system arrives Sunday. Initially this one is warmer, but becomes the coldest on Monday, dropping the snow level below 4000 feet. A final northerly wave seems to move through Tuesday extending the showers, which might include snow in the high desert. The numbers are ridiculous; total rainfall for the entire period today through Tuesday: 2-5 inches in coast and valleys, 5-10 inches in the mountains with a few spots exceeding 12 inches, 0.75-1.5 inches in the deserts. Snowfall 2-4 feet above 7000 feet, and up to 2 feet between 5500-7000 feet, up to a foot between 4000-5500 feet. By Wednesday dry weather finally makes an appearance possibly along with offshore winds
SYNOPSIS FROM THE PHOENIX OFFICE
A series of Pacific storm systems will move into the region starting today. After the weaker system today and tonight, a stronger and wetter system will affect the region Friday through early Saturday. Snow accumulation will be above 5500 feet, with a Winter Storm Warning posted for the mountains east of Phoenix. A break in the weather is expected Saturday night and early Sunday, however another Pacific storm is expected in the region later Sunday through Monday night. Dry but cool weather will settle into the region for the middle of next week
|Weather Story Phoenix Station
||Weather Story San Diego Station
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