The National Weather Service has reported that satellite imagery shows an upper-level trough moving through California, accompanied by a surface-level low meandering about 200 miles west-southwest of Monterey off the coast.
Showers that formed overnight and persisted into the morning have mostly dissipated, with a few lingering off the Big Sur coast into the afternoon.
Rainfall amounts varied across the region, ranging from a few hundredths in the interior Central Coast and northern parts of the North Bay to a quarter to half an inch from Marin County through Oakland and central San Mateo County.
In the higher elevations of Marin County, San Francisco, and northern San Mateo County, up to an inch of rainfall was experienced.
As the day progresses, skies are expected to clear, and high temperatures are forecasted to reach the upper 50s and lower 60s in lower elevations and the low to mid-50s in higher elevations.
Overnight lows will drop into the upper 40s to lower 50s near the coast and the upper 30s to lower 40s inland.
Tomorrow’s highs are expected to be similar to today’s, with a chance of sprinkles across coastal ranges, not exceeding a tenth of an inch.
Looking ahead to the long term, from Thursday night through next Tuesday, the region can anticipate an unsettled weather pattern due to upper-level flow from the northwest.
Several disturbances are expected to approach the west coast, primarily impacting the Pacific Northwest and northern California.
For the North Bay, rainfall amounts are expected to stay under half an inch, with the possibility of higher totals focused on the Sonoma coastal ranges.
The main impacts of this unsettled pattern include cooler temperatures and cloudy skies.
Highs for the rest of the workweek will hover around the upper 50s to lower 60s in lower elevations and the upper 40s to mid-50s in higher elevations. Breezy onshore winds are expected later on Thursday into Friday.
After the upper trough moves into the Great Basin, an upper-level ridge is forecasted to develop in the North Pacific, leading to a warming trend over the weekend.
Highs for the beginning of next week are projected to rise into the upper 60s to lower 70s for interior valleys and the mid-50s to lower 60s in higher elevations.
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