I hope everyone was able to take advantage of the sunshine today because a pair of storms will bring rain, snow, and the potential for thunderstorms to Northern California this weekend. Temperatures topped out in the mid 60's to low 70's in the valley today, in the mid to high 50's in the foothills, and in the 40's to 50's in the mountains this afternoon. Winds have mostly been out of the West to around 10mph. Skies will be clear heading into this evening, but clouds are expected to increase across our region late tonight. There will be a chance for showers by around midnight in the Northern Mountains, but most area will be staying dry until early Saturday.
The first of two storms on the way for this weekend will arrive on Saturday and will bring light to moderate rain and moderate to heavy snow to the North State. Snow levels are expected to get down to around 4000' in the Sierra on Saturday and down to around 3500' in the Northern Mountains during that time. The second storm will move in on Sunday and is expected to bring bigger impacts to areas of Northern California. Moderate to heavy rain and the potential for thunderstorms are ahead for the valley on Sunday. Heavy snow will be likely in the mountains, and you're encouraged to avoid mountain travel for the second half of the weekend if at all possible. Snow amounts of up to 2 inches an hour will be possible, and that could make mountain travel difficult to impossible. The Winter Storm Watch has now been upgraded to a Winter Storm Warning. In Siskiyou County the Winter Storm Warning will be in effect from 5am Saturday through 5pm Sunday. Up to 16 inches of snow will be possible down to 4000' there. In Trinity County the Winter Storm Warning will be in effect from 5am Saturday through 11pm Sunday. 7 or more inches of snow will be possible down to as low as 3500' there during that time. Western Shasta County will have the Winter Storm Warning in effect from 5am Saturday through 5am Monday. 12 to 18 inches of snow are projected down to 4500' there during that time, with localized areas possibly seeing up to 30 inches of snow. The Western Slopes of the Sierra will have the Winter Storm Warning in effect from 11am Saturday through 11am Monday. 1 to 3 feet of snow are possible down to 4500' in that area during that time, and we could see some localized areas with up to 4 feet of snow from Saturday through Monday. The Eastern Slopes of the Sierra will have the Winter Storm Warning in effect from 2pm Saturday through 5am Monday in areas above 5000'. Up to 2 feet of snow will be possible there during that time. Gusty South winds are also expected this weekend. Sustained winds could reach 30mph out of the South in the valley and we could see gusts up to around 40mph. Valley rain totals are currently projected to end up between 1 to 2 inches for the Saturday through Monday timeframe. Thunderstorms could result in locally higher amounts in some parts of the valley. Valley areas will start out in the low to mid 40's and end up in the mid 50's. through your weekend. Mountain areas will start out in the 20's to 30's and end up in the 40's for your afternoons this weekend.
Slightly warmer temperatures and lighter showers are expected to linger across our region on Monday. There will be a slight chance for some showers lingering on Tuesday, but most of the activity will be tracking into Central to Southern California by then. Dry and warmer weather is expected to return for the middle of next week.