A really different storm

We were supposed to get rain today here in the San Francisco greater area. However, when I looked at it on radar it extends from here all the way to Wyoming and as far south as Tijuana, Mexico and as far north as Whistler and the Canadian Cascades which I found very strange. On top of this is the clouds which are very broken up and spaced apart. However, because it is cold it is snowing hard in much of Lake Tahoe and Yosemite right now which is fairly unusual this late in the season and it is also snowing at higher elevations on Mt. Shasta as well. A very different and cold storm hitting the whole western United States and Canada and even into Mexico and some parts of Texas.