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 30 October 1948 → The Donora, PA smog disaster finally came to an end. For five days pollution from industry in the area was trapped in the lower atmosphere over the Monongahela Valley, killing 20 people and making 2000 people sick.
 30 October 2004 → University of Hawaii students visiting the library had to escape through a window due to surging flood waters.
 30 October 2011 → An unusually severe early season winter storm swept up the Appalachians into New England. Over a foot of snow fell from West Virginia to Maine, with more than two feet in the mountains of Massachusetts and New Hampshire. Winds over 50 mph were reported on Nantucket Island and Martha's Vineyard.

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January 24, 1972:

Snowfall of a dusting to as much as 8 inches accompanied by 30 to 40 mph winds resulted in widespread blowing and drifting snow across much of South Dakota. Many roads were blocked by the heavy drifting. Visibilities were near zero at times. Many activities were cancelled or postponed.

January 24, 1985:

Blizzard conditions associated with an Arctic front moved into western Minnesota and northeast South Dakota during the afternoon and continued into the evening. The blizzard brought travel to a standstill. Winds increased to 40 to 60 mph. Many roads were closed due to drifts of snow. Temperatures fell rapidly behind the front with wind chills of 30 to 50 below zero overnight. There were a number of accidents and stranded motorists. Many vehicles went into the ditch with many people stranded. The National Guard was called upon to search for stranded motorists. Portions of northeast South Dakota experienced near blizzard conditions as wind speeds gusted to near 60 mph with dangerous travel conditions.


Record Highs: Record Lows:
Aberdeen: 60 (1981) Aberdeen: -35 (1915)
Kennebec: 69 (1981) Kennebec: -38 (1894)
Mobridge: 57 (1981) Mobridge: -25 (1961)
Pierre: 67 (1981) Pierre: -22 (1961)
Sisseton: 65 (1981) Sisseton: -37 (1936)
Timber Lake: 60 (2005) Timber Lake: -25 (1961)
Watertown: 65 (1981) Watertown: -36 (1904)
Wheaton: 61 (1981) Wheaton: -27 (1952)

Record Precipitation: Record Snowfall:
Aberdeen: 0.48" (1956) Aberdeen: 5.0" (1956)
Kennebec: 0.16" (1956) Kennebec: 4.0" (1956)
Mobridge: 0.22" (1956) Mobridge: 2.8" (1972)
Pierre: 0.30" (1956) Pierre: 3.1" (1956)
Sisseton: 0.60" (1950) Sisseton: 6.0" (1950)
Timber Lake: 1.12" (1950) Timber Lake: 9.5" (1950)
Watertown: 0.14" (1969) Watertown: 1.5" (1992)
Wheaton: 0.42" (1950) Wheaton: 5.5" (1950)


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