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 18 2018|
|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|
Light southwest-to-west winds will prevail across most of the county through Friday morning, then become much stronger into Friday afternoon. High temperatures will reach into the mid to upper 70s.
SYNOPSIS FROM THE SAN DIEGO OFFICE
It looks like another fantastic day is on tap across southern California, thanks to a high pressure ridge aloft. However, a fast-moving trough is set to kick off the weekend. This system will have limited moisture, but will produce gusty winds in the mountains and deserts, and drop temperatures sufficiently for some light snowfall in the mountains later Friday into early Saturday. Look for snowfall over the higher mountains Friday night into Saturday morning. Accompanying the snow will be gusty westerly winds. A Winter Weather Advisory has been issued. Weekend travelers should check the latest forecast and road conditions before heading out. It will be noticeably cooler all areas through Sunday, then a bit warmer into the first half of next week as afternoon high temperatures slowly return to near average values.
SYNOPSIS FROM THE PHOENIX OFFICE
High pressure will prevail across the region through Friday with above normal temperatures and dry conditions. A notable storm system will move into the Southwest late Friday and into Saturday. An approaching cold front will race through the western deserts Friday night, then move through south-central Arizona during the day on Saturday. While it still does not look like a very wet system, it will result in increasing winds and a significant drop in temperatures. Gradients will tighten Friday afternoon, leading to breezy or locally windy conditions mainly over far southeast California, with gusts over 30 mph expected in the favored higher terrain locations west of the lower Colorado River valley. After a cool Saturday and Sunday, temperatures will slowly rebound heading into the first part of next week.
|Weather Story Phoenix Station||Weather Story San Diego Station|