Scattered showers have lingered across mostly mountain areas of Northern California for your Tuesday afternoon, but a lull in the wet weather is on the way for tonight through mid day tomorrow. A more substantial winter storm is projected to track through the Coastal Range and into the Northern Mountains tomorrow afternoon, and then spread across the valley and Sierra late Wednesday night into early Thursday morning. The Winter Storm Watch has now officially been upgraded to a Winter Storm Warning for mountain areas above 2000' from Wednesday afternoon through early Friday. For the Northern Mountains the Winter Storm Warning will go into effect at 4pm Wednesday afternoon and stay in effect through 4pm Thursday. For Shasta County mountain areas the Warning will be in effect from 6pm Wednesday through 6am Friday. For the Sierra, Cascades, and Foothills the Warning will be in effect from midnight on Wednesday through 6am Friday. 1' to 2' of snow will be possible across most mountain areas and some localized areas could see up to around 3' of snow from Wednesday afternoon through mid day Friday. Valley areas will see moderate to heavy rain possible from late Wednesday night through Thursday night. There will be a decent chance for thunderstorms developing in the valley on Thursday afternoon and evening. We'll also be dealing with the potential for winds gusting up to around 50mph from Wednesday afternoon through Thursday afternoon.
Temperatures will dip into the mid 30's in the valley overnight into early tomorrow, and mountain areas will end up in the teens to 20's for the start of your Wednesday. High temepratures will end up in the high 40's in the valley, and in the mid to high 30's in most mountain areas on Wednesday afternoon. Low temperatures are projected to be slightly warmer for the start of your Thursday, but high temperatures will be similar to Wednesday's. We'll have a break from the wet weather returning to our region early in the day on Friday, but another wet system is projected to spread lighter showers across Northern California overnight Friday into Saturday. That system is projected to be much weaker than the Wednesday through early Friday system, and is only expected to drop a few inches of snow in areas down to as low as 3000'. Most of the showers are currently projected to wrap up on Saturday evnining, but some scattered showers will continue to be possible in the mountains on Sunday. The temperature trend is not expected to change much through your upcoming weekend. Valley low temperatures will range from the mid 30's to around 40 degrees, and mountain areas will dip into the 20's over the next several days. High temeperatures will range from the high 40's to low 50s in the valley through Saturday, while mountain areas top out in the mid to high 30's. Valley areas will end up back in the mid to high 50's on Sunday and for the start of next week.
More wet weather looks likely next week, but the timing and strength of the next few systems won't become clear enough to forecast with any certainty until we get closer to this upcoming weekend.