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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.

October 26 2016
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
Fair and warmer weather is expected today with higher pressure aloft and scattered high clouds. A low pressure system will bring continued high clouds Thursday and then showers and possible thunderstorms late Thursday night through Friday. Continued moisture moving in could result in a few more showers Saturday before we possibly more possible showers, cooling and a deep marine layer Saturday night through Sunday as another trough moves into California. Drier and still cool Monday and Tuesday with southwest flow aloft and cool onshore flow.

Visible satellite this afternoon shows high clouds streaming across the area. On the 12Z Miramar sounding, the increase in moisture is noted above 300 mb, resulting in the high clouds we are seeing today. On water vapor satellite, a highly elongated southwest to northeast oriented trough was off the west coast while a ridge to our south was nudging northward into our region. This ridge is resulting in some warming today, with most locations several degrees higher than 24 hours ago. With continued scattered to broken high clouds expected to continue through tonight, and the almost non-existent marine layer low clouds today, low clouds/fog will likely be very patchy again tonight/Thursday morning. Partly sunny to mostly cloudy skies expected Thursday during the day as upper level moisture from the southwest increases.

Strong high pressure building over the region will lead to warming temperatures through the end of this week with record highs possible at some locations on Thursday. A slight cool down will occur for the weekend and early next week, but temperatures will still remain well above normal and the dry weather will continue for the majority of the region.
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