Epic blizzard rages: 70 mph winds, blocked highways, vehicle rescues
Blizzard warnings continue overnight in much of Minnesota
Updated 9:30 p.m.
Snowfall is beginning to ease in the greater Twin Cities area. But high winds will continue overnight. That means blowing snow will continue to re-cover roadways that may have been cleared by plows. Travel conditions will remain extremely dangerous across Minnesota into early Thursday morning.
In the past two hours, wind gusts to 65 mph have been recorded in Grand Marais, and 68 mph in Redwood Falls.
The Minnesota State Patrol sent this tweet reporting the Minnesota National Guard has deployed small unit support vehicles (SUSV) to help rescue stranded motorists in Martin County.
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This high-impact storm has delivered extreme winter weather conditions as expected in the state. The combination of intense winds and snow have indeed produced extreme impacts in much of Minnesota.
A major blizzard continues to rage overnight for much of Minnesota. Blizzard warnings continue until 6 a.m. Thursday for most of Minnesota.
Including the cities of Princeton, Mora, Elk River, Cambridge, Center City, Monticello, Minneapolis, Blaine, St Paul, Stillwater, Hutchinson, Gaylord, Chanhassen, Chaska, Victoria, Shakopee, Hastings, New Ulm, St Peter, Le Sueur, Faribault, Red Wing, St James, Mankato, Waseca, Owatonna, Fairmont, Blue Earth, and Albert Lea
346 PM CST Wed Dec 23 2020
...BLIZZARD WARNING REMAINS IN EFFECT UNTIL 6 AM CST THURSDAY...
* WHAT...Blizzard conditions. Total snow accumulations of 7 to 11 inches. Winds gusting as high as 60 mph. DO NOT TRAVEL UNLESS IT IS AN EMERGENCY!
* WHERE...Portions of central, east central, south central and southeast Minnesota.
* WHEN...Until 6 AM CST Thursday.
* IMPACTS...Travel will be very difficult or impossible. Widespread blowing snow could significantly reduce visibility. The hazardous conditions will impact the evening commute. Strong winds could cause tree damage. The cold wind chills as low as 30 below zero could cause frostbite on exposed skin in as little as 30 minutes.
Here’s what the storm looked like as peak blizzard set in around 4 p.m. at the Weather Lab.
Impassable roads
As of this post I’m seeing reports of many stranded motorists. The Minnesota State Patrol reports cars blocking Highway 12 in southwest Minnesota, with people being rescued from vehicles.
Roads are closed by blowing and drifting snow across most of southwest Minnesota.
The Duluth area is getting hammered by high winds and snow.
Roads are closed at many other locations in Minnesota.
Gov. Tim Walz on Wednesday evening ordered the Minnesota National Guard to provide assistance and emergency relief services for stranded motorists during the winter storm. The Guard has been activated in Renville and Martin counties, and has opened its armories in Olivia and Fairmont to be used as a temporary shelter.
Severe thunderstorm-level winds
Wind gusts as high as 70 mph have been recorded near Lake Benton, Minn., Wednesday. Many Minnesota locations report wind gusts between 50 and 66 mph.
Snowfall gradually tapers off overnight
The heaviest snow zone set up from near Mankato, through the Twin Cities to Duluth and the North Shore. Snow will gradually tamper off from west to east overnight into early Thursday morning. Here’s NOAA’s NAM 3 km resolution model showing the back edge of the snow zone.
Snowfall totals
One amazing facet of this blizzard is that the high winds have literally scoured off snow and left nearly bare ground in open areas. Here are some early snowfall reports as of 6 p.m. Snow is still in progress across eastern Minnesota.
Minneapolis-St. Paul International Airport: 4.2 inches
Chanhassen, Minn.: 5.5 inches
Carver, Minn.: 7.5 inches
The Twin Cities National Weather Service office points out that measuring snowfall in this type of storm is very difficult. Much of it is airborne or deposited in snow drifts.
Cold next
Bitterly cold air behind the storm is dropping wind chills into the minus 20s to nearly minus 30 in northwest Minnesota.
Highs on Christmas Eve will hover in the single digits above zero.