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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October 11, 1987:

More than thirty cities in the Upper Midwest reported record low temperatures for the date, including Waterloo IA and Scottsbluff NE where the mercury dipped to 16 degrees. Tropical Storm Floyd brought heavy rain to southern Florida, moisture from Hurricane Ramon produced heavy rain in southern California, and heavy snow blanketed the mountains of New York State and Vermont.

October 11, 1989:

Much of the nation enjoyed "Indian Summer" type weather. Nine cities in the central U.S. reported record highs for the date as temperatures warmed into the 80s and 90s. Record highs included 90 degrees at Grand Island NE and 97 degrees at Waco TX. Strong winds along a cold front crossing the Northern High Plains Region gusted to 80 mph at Ames Monument WY during the early morning.


Record Highs: Record Lows:
Aberdeen: 89 (1910) Aberdeen: 16 (1935)
Kennebec: 97 (1910) Kennebec: 14 (1896)
Mobridge: 90 (1943) Mobridge: 19 (1946)
Pierre: 88 (1943) Pierre: 16 (2009)
Sisseton: 84 (1974) Sisseton: 15 (1935)
Timber Lake: 88 (1943) Timber Lake: 14 (2009)
Watertown: 88 (1934) Watertown: 20 (1959)
Wheaton: 87 (1995) Wheaton: 20 (1919)

Record Precipitation:
Aberdeen: 1.38" (1961) Aberdeen: 0.2" (2009)
Kennebec: 1.30" (1973)
Mobridge: 1.43" (1973) Mobridge: 1.2" (2009)
Pierre: 1.73" (1973) Pierre: 0.5" (2009)
Sisseton: 0.76" (1947)
Timber Lake: 1.15" (1947)
Watertown: 0.65" (2003) Watertown: 0.5" (2006)
Wheaton: 0.70" (1997)


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