This Day in National/World Weather History ...
 17 September 1932 → A tropical storm struck the Annapolis Valley in the Canadian Maritimes, destroying 300,000 barrels of apples in Nova Scotia. A second tropical storm would strike Nova Scotia just seven days later.
 17 September 1936 → Tropical storm remnants brought up to 30 inches of rain to central Texas, resulting in massive flooding. In San Angelo the Concho River reached one of its highest stages on record and inundated the city. One thousand homes were damaged or destroyed, two bridges were swept away, and there were 100 rescues performed. Water was six feet deep in the lobby of the Naylor Hotel.
 17 September 1947 → The Fort Lauderdale Hurricane struck the east coast of Florida as a high-end Category 4, resulting in 51 fatalities. Hurricane force winds extended 120 miles out from the center, and produced the highest measured ground wind speeds in a Florida hurricane until Hurricane Andrew. The storm then crossed the Gulf of Mexico and produced 110 mph winds at New Orleans.
 17 September 2004 → Flooding and mudslides killed more than 3,000 people in Haiti in Hurricane Jeanne.

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                   Weather History...

May 30, 1899:

An estimated F3 tornado moved northeast from 2 miles west of Laurel, Nebraska and across the west edge of Elk Point, South Dakota. At least two homes were destroyed in Nebraska. The tornado then struck three farms in South Dakota, destroying 16 buildings on one of them. One man was injured as he knelt over his wife and child.

May 30, 1998:

An F4 tornado moved through southeast South Dakota, killing 6 people and injuring another 150. The tornado crossed into McCook County at approximately 7:38 pm, CST and moved through downtown Spencer at approximately 7:39 pm, CST. The total cost of damage was more than $18 million with an additional half million in crop damage.

Record Highs: Record Lows:
Aberdeen: 110 (1934) Aberdeen: 27 (1947)
Kennebec: 107 (1934) Kennebec: 28 (1947)
Mobridge: 105 (1934) Mobridge: 33 (2012)
Pierre: 103 (1934) Pierre: 32 (1947)
Sisseton: 113 (1934) Sisseton: 33 (1947)
Timber Lake: 98 (1939) Timber Lake: 31 (1947)
Watertown: 106 (1934) Watertown: 31 (1947)
Wheaton: 93 (2002) Wheaton: 34 (1924)

Record Precipitation:
Aberdeen: 3.35" (1899)
Kennebec: 2.88" (1919)
Mobridge: 3.24" (1943)
Pierre: 1.25" (1918)
Sisseton: 1.25" (1951)
Timber Lake: 1.73" (1943)
Watertown: 2.00" (1959)
Wheaton: 1.90" (1985) is the U.S. government's official web portal to all federal, state and local government web resources and services.