Rain will become widespread, and heavy at times into the morning commute.
The chance for showers will increase this evening with widespread rain after midnight into early Friday with a slight chance of thunderstorms. The greatest impact will be Friday morning, showers will become less widespread and more scattered to isolated in the afternoon and evening.
Another wave of low pressure will arrive Saturday afternoon with colder air and more precipitation. The morning will be drier with a few showers. The biggest concern with this second wave will heavy snow to our mountains with snow levels dropping to 4,000 feet. A Winter Weather Advisory will be in effect from midnight tomorrow through 2am Sunday.
Snow totals above 5,000' will average between 3 to 6", that includes Mt. Laguna and Palomar Mountain. Areas at 4,000' and 5,000' expect 1 to 3", which means lighter snow totals for Julian and Ranchita.
We will start to dry out Sunday, but a few lingering showers can't be ruled out.
Rainfall totals will average between .25 to 1.30" for the coast and valleys with .75 - 2.00" in the mountains and less than .25" in the deserts.
The strongest winds will impact the mountains and deserts with westerly gusts of 30 to 60mph while the coast and valleys will see westerly gusts of 15 to 30mph. A Wind Advisory will be in effect for the deserts from 7pm today to noon Saturday.
Temperatures will be well below normal through the weekend, with a gradual improvement with daytime highs closer to 70 degrees for the coast and valleys by Tuesday with dry conditions and mostly sunny skies.
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