i'm joseph olmo, nbc news. now to a live look at highway 80 at castle peak. new.ter storm warning is now in effect in the sierra. up to three feet of new snow expected to fall in some areas between today and wednesday. the national weather service warns anyone thinking of traveling through the sierra. conditions can range from difficult to impossible. it is so important to plan out your trip. yeah, and you also want to make sure you're prepared with the emergency kit in the vehicle and chains, because that may be required, especially as we go into the afternoon. that's if you're going to the sierra. let's get a look at what we are seeing with our live view. as a lot of the rain and snow that we've had over the weekend has taken a break with our live view of palisades tahoe, and temperatures have been warming up. so what we may see initially will be rain and then changing over to snow as temperatures drop over the next couple of days. and as we see that snow coming down, there's going to be a lot of it by the end of the week. the potential of about 23in of snow in