A winter storm warning is up for the Sierra, and a winter weather advisory for our valleys, until 4 a.m. on Friday.

Heavy snow will impact travel along our mountain passes on Thursday with chain controls and delays - travel is not advised.

I-80 is back open in both directions after being closed eastbound at Alta and westbound is reopen at the California/Nevada state line earlier, but officials advise you not to travel in the Sierra today if you can avoid it. 

Our valleys will see snow showers by Thursday afternoon and evening with 1 to 3" possible and a slick evening commute. The storm moves out of here on Friday with a break in the weather on Saturday.

Another storm is on the way Sunday through Monday with another round of snow and chain controls in the mountains.

Check www.nvroads.com for the latest road conditions.