This Day in National/World Weather History ...
20 June 1928 → A farmer from Greensburg, KS looked up into the heart of a tornado. He described it as "rotating clouds lit with constant flashes of lightning and a strong gassy odor with a screaming, hissing sound."
20 June 1957 → An F5 tornado in North Dakota caused great destruction in Fargo. Over 1300 homes were destroyed or damaged over a 9 mile path. There were 10 fatalities and 103 injuries.
20 June 1972 → From the 20th to the 25th former Hurricane Agnes, in combination with a mid-latitude low pressure area, deluged Pennsylvania and New York with torrential rains resulting in one of the most costly floods in U.S. history. In the Middle Susquehanna Valley of Pennsylvania, rainfall amounts were generally 8 to 12 inches, with up to 19 inches in Schuylkill County. At Wilkes-Barre, the dike was breached, destroying much of the town. Flooding resulted in 117 deaths and $3.1 billion in damage.

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November 23, 1996:

Heavy snow of 6 to 8 inches fell across most of northern South Dakota, adding to already-significant snow depth. Roads became snow-packed, which hampered travel, resulting in the postponement of many activities. Some snowfall amounts included 6 inches at Aberdeen, Isabel, Roscoe, and Mellette; 7 inches at Eagle Butte, Timber Lake, Selby, Faulkton, Leola, Frederick, Webster, and Sisseton; and 8 inches at Britton, Ipswich, Eureka, and McLaughlin.


Record Highs: Record Lows:
Aberdeen: 57 (1905) Aberdeen: -17 (1985)
Kennebec: 69 (1988) Kennebec: -11 (1985)
Mobridge: 70 (1914) Mobridge: -10 (1985)
Pierre: 65 (1984) Pierre: -11 (1985)
Sisseton: 55 (1984) Sisseton: -9 (1950)
Timber Lake: 60 (1942) Timber Lake: -13 (1985)
Watertown: 52 (1928) Watertown: -15 (1898)
Wheaton: 62 (2006) Wheaton: -8 (1950)

Record Precipitation: Record Snowfall:
Aberdeen: 0.40" (1931) Aberdeen: 4.2" (1996)
Kennebec: 0.37" (2003) Kennebec: 8.0" (2003)
Mobridge: 0.18" (1958) Mobridge: 2.8" (1993)
Pierre: 0.34" (1933) Pierre: 3.4" (1993)
Sisseton: 0.43" (2003) Sisseton: 3.7" (1996)
Timber Lake: 0.52" (1996) Timber Lake: 5.0" (1996)
Watertown: 0.30" (1962) Watertown: 4.0" (2003)
Wheaton: 0.40" (2003) Wheaton: 5.0" (2003)"

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