Get ready for a wet and cooler day across northern California! Low pressure tracking into the Pacific Northwest will be bringing rain, snow, cooler temperatures, and gusty south winds into your Friday forecast. A Winter Storm Warning will be in effect through 10pm tonight in central Siskiyou County above 4000'. We could be seeing up to around a foot of snow in that area today. A Winter Weather Advisory will be in effect through 4pm for northern Trinity & western Shasta County areas above 4000' through 4pm this afternoon. Up to around 6 inches of snow will be possible in those areas today. A Winter Weather Advisory will go into effect at 10am along the West Slopes of the Sierra above 6000', and will stay in effect through 10pm tonight. Up to around 9 inches of snow will be possible there. We also have a High Wind Warning going into effect from 7am this morning through 10pm tonight in Modoc County, and an additional High Wind Warning for portions of Lassen and Plumas Counties from 10am this morning through 1am Saturday morning.
Showers are already tracking into our region for the start of your Friday and we'll continue to see rain and snow through the day. Temperatures in the valley and foothills will hover in the 40's to mid 50's today, while mountain areas will stay in the 30's to 40's through this afternoon. Sustained winds out of the south to around 25mph will be possible in the valley and foothills, with gusts up to 35mph today. Sierra and Southern Cascade areas will have sustained winds up to around 35mph and gusts potentially upwards of 50mph out of the southwest this afternoon.
Showers will taper off tonight, but some light precipitation will be possible in the Sierra through Saturday morning. We'll likely see fog become an issue early in the day on Saturday for most of our region. A break in the wet weather is expected for most of the day on Saturday and temperatures will end up several degrees warmer than Friday in most locations. Another round of showers will arrive late Saturday night along the northwest coast of California. Wet weather will be possible in the mountains closest to the coast and Oregon border through early Sunday. We'll also have a decent chance for some light showers sagging into the far northern end of the valley during that time. Another break from the wet weather is ahead from mid day Sunday through Monday, and temperatures will warm by several degrees. Models are still showing differences on what to expect from Tuesday through Thursday of next week, but there will be a good chance for more showers on the way to northern California during that time. Another round of wet weather will then be likely on Friday of next week. It's very exciting to see wet weather returning to our region, but keep in mind this will make travel conditions a bit more treacherous over the next several days.