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 30 July 1119 → The earliest tornado reported on the European mainland struck Vysehrad, Czechia (today Prague, Czech Republic). It destroyed the palace of a Czech duke.
 30 July 1997 → Two waterspouts moved onshore in northern Virginia Beach, VA. One tracked into Norfolk.
 30 July 1999 → At nine o'clock in the morning Chicago recorded its highest ever dew point temperature of 82 degrees. The temperature at the time was 88, resulting in a heat index of 108. The dew point is an indication of the amount of moisture in the air.

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November 18, 1985:

Snowfall of 3-8 inches fell over western, central and northern South Dakota, with the greatest amount of 8 inches at Huron in Beadle County and White River in Mellette County. Strong winds exceeding 40 mph over the area produced near-blizzard conditions at times, with considerable blowing and drifting snow. Storm total snowfall amounts included; 6.0 inches in Murdo; 5.5 inches at Gettysburg, 5.0 inches near Stephan, in Eureka, and 12SSW of Harrold; and 4.0 inches in McLaughlin.

November 18, 1992:

Three to eleven inches of snow fell in the northeast third of South Dakota and into west central Minnesota from the 18th into the 19th. Storm total snowfall amounts included; 11.0 inches in Browns Valley and near Bryant; 9 inches near Sisseton, Summit and Wheaton MN, 8 inches near Victor and Wilmot; 7.9 inches at Artichoke Lake MN, and 7.0 inches in Clear Lake.


Record Highs: Record Lows:
Aberdeen: 75 (1908) Aberdeen: -13 (1896)
Kennebec: 73 (1908) Kennebec: -1 (1903)
Mobridge: 66 (1949) Mobridge: 0 (1947)
Pierre: 67 (1949) Pierre: 5 (1947)
Sisseton: 67 (1904) Sisseton: -5 (1986)
Timber Lake: 65 (1949) Timber Lake: -3 (1986)
Watertown: 67 (1908) Watertown: -6 (1927)
Wheaton: 67 (1953) Wheaton: 0 (1989)

Record Precipitation: Record Snowfall:
Aberdeen: 1.15" (1895) Aberdeen: 6.0" (1895)
Kennebec: 0.34" (1952) Kennebec: 2.0" (1985)
Mobridge: 0.21" (1981) Mobridge: 2.1" (1981)
Pierre: 0.23" (1985) Pierre: 2.3" (1985)
Sisseton: 0.97" (1952) Sisseton: 9.0" (1958)
Timber Lake: 0.23" (1985) Timber Lake: 3.0" (1985)
Watertown: 0.33" (1985) Watertown: 2.0" (1958)
Wheaton: 1.27" (1952) Wheaton: 3.5" (1958)"


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