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Significant cooling, breezy winds, mountain snow, showers and potential for thunderstorms expected today. Cold morning lows, possible morning frost Thursday and Friday, and breezy offshore winds Thursday. Unsettled weather possible again this weekend.

Discussion

The trough today will still be over the region during the day and favors showers continuing over the region but more widespread over the western slopes of the Sierra Nevada. Snow levels look to mainly remain between 3500 to 4500 feet. Amount of precipitation seems less than on Tuesday although heavy amounts may fall with thunderstorms. 2 to 6 inches of snowfall could still occur.

Post frontal instability is still indicated that may bring more thunderstorms today into early evening with potential indicated over most of the area. Heavy rain and small hail look likely with any thunderstorms that develop today or heavy snow for any mountain thunderstorms.

Thursday and Friday the low moves east and breezy north winds develop for Thursday with the stronger gusts up to 30 mph for the valley. Cold air over the region may bring some frost to parts of the valley and foothills both Thursday and Friday mornings.

The best chances on Thursday will be on the eastside of the valley where winds should be light. Daytime temperatures will warm some over todays temperatures but be colder at night.

Another system may move over the region on Saturday bringing more rain and mountain snow.

Extended Discussion (Sunday through Wednesday)

A wet and cooler than normal pattern will setup for the extended period. Timing differences will change at this point but Sunday Monday time period looks like one system will move into the area then Tuesday and Wednesday for the next one. These systems look to be on the cold side with decent amount of precipitation.

Snow will likely fall over the mountains potentially measuring in the feet rather than inches over the higher elevations. Ensembles are also suggesting a stronger than normal anomalous pattern with next weeks systems especially for the Tuesday/Wednesday one.