This Day in National/World Weather History ...
 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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September 16, 2006:

Two weak tornadoes touched down briefly west and north of Clark in the late afternoon. No damage occurred.


Record Highs: Record Lows:
Aberdeen: 96 (1925) Aberdeen: 27 (1893)
Kennebec: 102 (1910) Kennebec: 27 (1903)
Mobridge: 95 (2002) Mobridge: 30 (1916)
Pierre: 98 (2000) Pierre: 35 (1971)
Sisseton: 94 (1948) Sisseton: 28 (1903)
Timber Lake: 98 (1926) Timber Lake: 29 (1957)
Watertown: 90 (1925) Watertown: 25 (1903)
Wheaton: 95 (1955) Wheaton: 34 (2007)

Record Precipitation:
Aberdeen: 1.60" (1917)
Kennebec: 1.36" (1965)
Mobridge: 1.18" (1986)
Pierre: 2.03" (1975)
Sisseton: 1.20" (1968)
Timber Lake: 0.93" (1913)
Watertown: 0.91" (1986)
Wheaton: 0.83" (2010)


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