FRIDAY, MARCH 16, 2018
SOUTHERN CALIFORNIA GEOGRAPHICAL AREA COORDINATION CENTER
A low pressure area off the Oregon Coast will push two weak troughs across the area through Saturday. The first one will bring scattered showers to the central coast throughout the day before pushing southward into Southern California this evening into the overnight hours. Steadier precipitation will be likely this afternoon along the central coast and Sierras this afternoon where up 1.50” of precipitation is likely. Snow accumulations in Sierras north of Madera County will be over a foot over 5,000 feet. The rain will be less organized by the time it arrives to Southern California, but intermittent precipitation can be expected over Southern California tonight through Saturday, mainly near the higher terrain. Rainfall accumulations along the coast and valleys will generally be around 0.25”, but some areas of the Angeles and Cleveland National Forest may see over an inch of rain. Snow levels will be lower than the past few storms and accumulations over 6” will be possible around 5,000 feet in the mountains of Southern California. Temperatures will remain 5-10 degrees below normal through the weekend. West winds of 20-30 mph will be possible in the mountains and desert. Next week, warmer weather is expected Monday and Tuesday with highs returning to the 50s in the mountains to the mid and upper 70s at lower elevations under partly sunny skies. A stronger storm is forecast to arrive Wednesday night into Thursday. This storm may bring heavier and perhaps more intense rainfall along with lower snow levels. No significant offshore winds are expected throughout the period.
Cool, humid weather should preclude any fire activity during the period. The rains of the past 2 weeks have allowed for some grass crop growth over Southern California which may be enough to keep large fire potential low through at least the end of the month.
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