Yes, we are. The National Weather Service has issued Winter Weather Advisories for snow and wintry weather across parts of Montana, Wyoming and South Dakota through Friday. Most the snow will fall in the mountains and higher elevations, with isolated amounts up to 11 inches. Expect travel to be more difficult due to slippery roads.   Outside of a snow threat, it will be very chilly across the High Plains, with lows tonight likely below freezing overnight. Tune into WeatherNation for the very latest. For WeatherNation, I am Meteorologist Marcus Walter.