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Storm system Friday into Saturday looking weaker locally

Posted at 8:39 PM, Apr 05, 2018
and last updated 2018-04-05 23:39:45-04

The onshore flow has produced a lot of cloud cover and cooler temps.  We will continue to see mostly cloudy skies into Friday as a storm system approaches. That system will have a significant impact in northern CA where 1-3" of rain for valley locations with 3-7" possible in foothills and mountains.  Locally much less rain is expected.  Models are backing away from initial optimism.  Now it looks like light amounts up to .75" is possible.  The highest potential looks to be in northern SLO county at the coast where .40-1" is possible.  SLO interior valleys look to see light to .25" while coastal valleys like SLO should see .10-.50".  In Santa Barbara County, the Santa Maria area should see .10-50" with less further south.  The Southcoast looks to see light to .25".

While rain could start Friday PM most of the rain will fall after 12a and end before early afternoon Saturday.  Sunday looks dry but windy NW winds 15-30.

The Central Coast will get brushed by a series of cold fronts next week.  The jet stream will direct the centers of low pressure well to the north.  This far south we could see a drop or two of rain here and there but not going to over-advertise rain at this point.  There is a slight chance Tuesday, but limited… and another Thursday which looks slightly better but again not going to run with a wet forecast since we are well away from the centers of low pressure.