Accompanying a ,for some, Winter Storm Astro brought the season's first snow to a swath of the north-central U.S. from Sunday, Nov. 9 through Tuesday, Nov. 11. In a few cases, records were set.
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The heaviest snow from Astro came in Michigan's Upper Peninsula, where cold winds blowing across Lake Superior helped boost totals. An observer 7 miles north-northeast of Ishpeming, Michigan, reported 42.5 inches of snow as of 10 a.m. Wednesday. Some of this was from lake-effect snow in the wake of Astro, but this same site reported 36.5 inches of snow early Tuesday evening before the transition to pure lake-effect snow was complete. In either case, it's by far the heaviest total reported from this storm.
Heavy snow also fell on nearby areas of far northern Wisconsin. Several locations reported over 20 inches. The top reported total of 27.6 inches came from Saxon, near the western end of the Wisconsin-Michigan border.
Elsewhere, some of the heaviest totals in Minnesota came from Stearns County, which includes St. Cloud. The town of St. Augusta reported 16.5 inches of snow Monday afternoon. The official total in St. Cloud was 13.2 inches, breaking the all-time November calendar-day record of 12.0 inches set Nov. 21, 1898.
It was also St. Cloud's fifth heaviest calendar-day snow on record (dating to 1893) and was their snowiest calendar day in over 49 years, since 14.5 inches of snow blanketed the city on Mar. 1, 1965. Average November snowfall in St. Cloud is 8.4 inches.
Parts of western and central Minnesota had measured over a foot of snow. The Minnesota Department of Transportation advised against travel in parts of western Minnesota, including Willmar and Montevideo, Monday afternoon.
Winter Storm Astro dumped the season's first snow in Bismarck, North Dakota Sunday, with 3.2 inches measured at the National Weather Service office. This first snow in North Dakota's capital city arrived about two weeks later than average. Up to 8 inches accumulated in southwest North Dakota by the time the snow ended.
No travel was advised in Bowman, Dunn, McKenzie and Mercer Counties in western North Dakota Sunday. Snow-covered roads were reported as far east as northwest Wisconsin Monday morning, including the Twin Cities metro area Monday morning. making for a messy commute.
Webster, South Dakota, chalked up 8 inches of snow and patchy freezing drizzle had deposited a thin layer of ice on roads in parts of northern South Dakota. Conditions were bad enough to force the Rapid City Regional Airport to close at one point Monday afternoon due to falling and blowing snow along with temperatures in the mid teens.
Up to 12 inches of snow blanketed parts of southern and eastern Montana, including Red Lodge (12 inches), Glasgow (6 inches) and Glendive (4 inches). Drifts up to 2 feet around buildings were observed near Brusett, in northeast Montana.
Additional snowfall occurred in parts of the Rockies due to cold upslope winds in the wake of Astro on Tuesday and Wednesday, but by this point the main low pressure system was well to the east over the Great Lakes. We do not consider that snow to be a part of Winter Storm Astro, but significant amounts were reported including 14 inches in Eldorado Springs, Boulder County, Colorado on Wednesday morning.
Here are the top totals reported by state:
- Michigan: 42.5 inches near Ishpeming in the Upper Peninsula (see above).- Wisconsin: 27.6 inches at Saxon in Iron County, north-central Wisconsin.- Minnesota: 16.5 inches at St. Augusta in central Minnesota and at Cambridge in the Twin Cities metro.- Montana: 14.0 inches at Big Mountain Summit, Whitefish Ski Resort (elevation 6,737 feet), in northwest Montana.- Wyoming: 11.3 inches near Lander.- South Dakota: 9 inches east-northeast of Sisseton.- North Dakota: 8 inches near Bowman in southwest North Dakota.- Colorado: 6.0 inches near Phippsburg in northwest Colorado.- Iowa: 2.2 inches at St. Ansgar in northeast Iowa.- Nebraska: 0.8 inch on the west side of Omaha.- Illinois: A trace of snow at Colusa.
Cold air in the wake of Winter Storm Astro led to continued lake-effect snows in parts of far northern Wisconsin, the Upper Peninsula of Michigan, and northern and western parts of Lower Michigan.