© Via twitter@LaurenKYVZ
Traffic backed up on Highway 97 in Bend, OR.
Snow, sleet and freezing rain could snarl Thanksgiving and weekend travel.

Bend, Oregon, reported 13-14 inches of new snow as of Tuesday night, with snowfall rates of 4 inches in 3 hours, bringing traffic to a standstill on U.S. 97. This in an area that averages only 24 inches of snow each season. Up to a foot of snow in the Sierra snarled traffic on Interstate 80 over Donner Summit as well. Up to 22 inches of snow was reported at Kirkwood Mountain Resort south of Lake Tahoe.

Meanwhile, numerous winter storm watches, warnings and advisories have been issued across the West from the northern Rockies to the Great Basin, Sierra and Tehachapis of California, also for a large swath of the central and southern Plains from New Mexico to Iowa.

Snow started to pile up on Tuesday across portions of the interior Northwest, Sierra Nevada and far northern Rockies. Some freezing rain was also reported in the Columbia Basin.

This system will head into the Plains on Thanksgiving Day and continuing into much of the weekend, bringing a mess of snow, sleet and freezing rain.

It is possible that enough freezing rain will fall to bring down trees and power lines and make for dangerous travel in parts of the central and southern Plains.

One or more periods of freezing rain and drizzle could affect major cities from Amarillo, Texas to Des Moines, Iowa.
While the storm will not bring major snowfall to the Central states, it will produce enough snow in parts of the Plains to cause slippery travel.

A few inches of snow could fall from the central and eastern parts of Colorado and Wyoming to portions of Nebraska and western Kansas. On Wednesday, locally heavy snow will persist over parts of Wyoming, Utah, Idaho, Montana, Oregon, Nevada and the Sierra of California, with blizzard warnings for portions of southern Wyoming.

Snow levels in the Sierra are expected to drop to 2,000 feet, with up to 18 inches of snow possible in higher elevations.
As if this weren't enough, the coldest air of the season to date is expected for the West and the Plains beginning Wednesday:
"I just measured 15″ of snow on a 4″-wide wooden fence on my property, which is on the sheltered side of the house," says reader Donna K Becker. "I live in Bend, OR. The snowstorm began yesterday at 7:30 a.m. and ended sometime overnight."