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As a deep low pressure trough sets up some 500 miles west of the Bay Area, we will continue to see periods of rain and showers all week.

You can see the elongated low, with the next disturbance rotating around it to our southwest. This will bring us another shot of rain Wednesday afternoon. The yellow represents dry air in this mid-level water vapor image, while bright white and green are moisture.

The upper level low pressure center is expected to deepen by Wednesday, with a tighter circulation, with rain reaching us in the early afternoon and lasting into early Thursday.

Wednesday-Thursday rain totals should be moderate, mostly 1/4 to 1/2 inch once again across the North Bay.

By Friday, the low pressure center will begin to move inland and is expected to pass just south of the Bay Area. This is our best chance of more significant rain.

Friday’s rain may last into Saturday and bring an additional inch or so on top of Wednesday’s storm. But even more may fall in the coastal hills.

ByThanksgiving Week warm weather will return, with a high pressure ridge leading to warmer than normal weather all across California and the West.

A quick hitting storm may pass to our east (blue), possibly impacting the Sierra on Thanksgiving, but we should stay mostly dry.

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