This summer was almost unbearable for residents of the western US. While folks east of the Rockies saw a relatively comfortable August (before hurricane season, that is to say), everything was an excessive heat advisory with temperatures reaching record levels all along the Pacific Coast. Well, the script, as they say, has flipped.
While it’s been in the 90s as far north as the Twin Cities this weekend, but out west, especially in the Grand Tetons and Sierras, a sharp upper level trough has brought an early season bout of cold air to the western US. How Cold? Cold enough for snow. Around Lake Tahoe, some locations saw a foot of the white stuff on the last day of summer.
The upper trough continues to remain parked over the central Rockies, and a lee trough is helping with the production of a great deal of rain in the Great Plains, but also leading to the forecast for more snow from Yellowstone through the Utah Wasatch.
Obviously, with 90s still occurring north of the Mason Dixon Line, we aren’t into the winter time forecast pattern quite yet, the possibility is certainly right around the corner, even to us flatlanders.