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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May 13, 1986:

A rare, Washington State tornado briefly touched down near Trafton, about 40 miles north-northeast of Seattle. Although short lived, witnesses observed the tornado destroying several pine trees, and lifting debris as high as 500 feet into the air.

May 13, 2005:

Runoff from heavy rain resulted in minor flooding along the White River from south of Belvidere to Oacoma, affecting mainly agricultural land along the river. The river rose over its banks and flooded U.S. Highway 83 south of Murdo for a short time. No property damage was reported.


Record Highs: Record Lows:
Aberdeen: 97 (1932) Aberdeen: 24 (1899)
Kennebec: 103 (2007) Kennebec: 24 (1966)
Mobridge: 95 (1932) Mobridge: 24 (1945)
Pierre: 99 (1941) Pierre: 24 (1953)
Sisseton: 92 (1932) Sisseton: 26 (1953)
Timber Lake: 94 (1941) Timber Lake: 25 (1953)
Watertown: 92 (1932) Watertown: 25 (1953)
Wheaton: 92 (1932) Wheaton: 26 (1953)

Record Precipitation: Record Snowfall:
Aberdeen: 0.82" (1958) Aberdeen: 1.0" (1924)
Kennebec: 1.40" (1908)
Mobridge: 0.60" (1933)
Pierre: 2.72" (1982)
Sisseton: 2.25" (1942)
Timber Lake: 1.18" (1916)
Watertown: 1.35" (1957)
Wheaton: 1.51" (1942)


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