This Day in National/World Weather History ...
 23 April 1792 → John Thomas Romney Robinson, inventor of the cup anemometer, was born.
 23 April 1908 → An extensive tornado outbreak began around noon today in Minnesota, and wouldn't end until the evening of the 25th in Georgia. The strongest tornado of the event was an F5 (estimated) near Pender, NE today where a farm was swept away and debris was found 35 miles distant.
 23 April 1910 → The temperature at the Civic Center in Los Angeles hit 100 degrees to establish an April record for the city.
 23 April 1988 → In southern California, a winter-like storm brought thunderstorms. Nine girls in Tustin were injured when lightning struck the tree they were standing under to shield themselves from the rain.

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April 21, 2007:

Heavy rains of 2 to 2.50 inches caused flash flooding in and around Watertown. Many streets were flooded in town, along with several roads outside of town. A warm front extending across the region was the focus for heavy rain, along with severe weather, during the evening across far northeast South Dakota. Hail up to the size of quarters, along with heavy rains of over 2 inches, caused some flooding mainly in Codington and Hamlin counties.


Record Highs: Record Lows:
Aberdeen: 97 (1980) Aberdeen: 16 (1936)
Kennebec: 99 (1980) Kennebec: 14 (1966)
Mobridge: 95 (1980) Mobridge: 16 (1927)
Pierre: 98 (1980) Pierre: 21 (1966)
Sisseton: 99 (1980) Sisseton: 16 (1936)
Timber Lake: 95 (1980) Timber Lake: 19 (1927)
Watertown: 95 (1980) Watertown: 10 (1927)
Wheaton: 98 (1980) Wheaton: 21 (1978)

Record Precipitation: Record Snowfall:
Aberdeen: 0.90" (1964) Aberdeen: 2.5" (1904)
Kennebec: 1.29" (1971) Kennebec: 2.0" (2002)
Mobridge: 1.11" (1968) Mobridge: 1.0" (2002)
Pierre: 1.02" (1971) Pierre: 0.5" (1982)
Sisseton: 0.74" (2007) Sisseton: 6.0" (1992)
Timber Lake: 1.18" (1964) Timber Lake: 7.0" (1988)
Watertown: 2.32" (2007) Watertown: 3.0" (2002)
Wheaton: 1.05" (1964) Wheaton: 2.0" (1992)


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