1991: A developing winter storm, centered to the south of the Black Hills, caused heavy snow to fall on the northern Black Hills the evening of March 11 into the morning of March 12th. Snowfall totals of 3-9 inches were reported, including 9 inches at Custer, 8 inches at Deerfield, and 8 inches at Lead.

2009: Bitter cold air filtered in behind the low pressure system bringing record cold to the area. Timber Lake and Mobridge broke their record low highs for the date when they only reached 1 below zero and zero, respectively, by the late afternoon. Mobridge also set a record low of 17 degrees below zero in the early morning hours of the 11th. Also on the 11th, Aberdeen and Sisseton broke their record low highs for the date with afternoon highs only reaching zero. The record at Aberdeen had been in place since 1896. Sisseton also set a record low of 14 degrees below zero on March 12th.

2011: A very intense low pressure area moving across North Dakota brought widespread blizzard conditions to central and northeast South Dakota. The low pressure area brought 1 to 3 inches of snowfall to the region. This new snowfall combined with 30 to 50 mph winds with gusts to 60 to 70 mph brought widespread whiteout conditions. Traffic was brought to a standstill with many motorists having to be rescued and taken to shelter. Hundreds of cars were stranded on mainly Highway 12 and Interstate-29. Two people traveling on Highway 10 in McPherson county told about how they became stuck and were picked up by another vehicle and that it took them over 2 1/2 hours to travel just a few miles to safety. Interstate-29 was closed from Watertown to Sisseton from 6 pm on the 11th until noon on the 12th. Many events were affected including the Girls State Basketball Tournament in Watertown. There were several overturned semis along with several vehicle accidents across the area. Some of the highest wind gusts included, 56 mph at Watertown; 58 mph at Mobridge, Sisseton, and Faulkton; 59 mph at Aberdeen; 61 mph at Bowdle; 66 mph near Hillhead, and 71 mph west of Long Lake.

1888: An unexpected blizzard dumped 4 feet of snow from New York to New England killing 400 people on the 11th and 12th. It was known as the "White Hurricane."

1911: The deepest snow cover ever measured in the U.S. was 451 inches in Tamarack, CA.

1923: An F5 tornado struck a part of Pinson, TN, killing 20 people.
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