This Day in National/World Weather History ...
 18 December 1944 → The ships of the US Navy Task Force 38, seven fleet and six light carriers, eight battleships, 15 cruisers, and about 50 destroyers were operating about 300 miles east of Luzon in the Philippine Sea. A small but violent typhoon overtook the task force with relatively little warning. Many of the ships were caught near the center of the storm and buffeted by extreme seas and hurricane force winds. Three destroyers capsized and went down with practically all hands, while a cruiser, five aircraft carriers, and three destroyers suffered serious damage. Approximately 790 men were lost or killed. Fires occurred in three carriers when planes broke loose in their hangars and 146 planes on various ships were lost or damaged beyond economical repair by fires, impact damage, or by being swept overboard.
 18 December 1957 → An unusually late tornado outbreak for the time of year for so far north struck Missouri and Illinois. 18 tornadoes were rated F2 or greater. An F4 ripped through Jackson, Williamson, and Franklin counties in Illinois. Murphysboro was hard hit with 10 people killed. Sunfield, IL vanished completely as an F5 tornado swept it clean.

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                   Weather History...

September 20, 1970:

In the late afternoon golf ball hail fell in and around Redfield with a tornado reported just north of Doland. No damage was reported with the hail or the tornado.

September 20, 1972:

About 430 pm, in Southeast South Dakota a tornado caused an estimated 95,000 damage to property and 50,000 damage to crops in Utica and nearby rural areas. Buildings were damaged, trees and power lines were downed.

Record Highs: Record Lows:
Aberdeen: 94 (1937) Aberdeen: 20 (1901)
Kennebec: 103 (1937) Kennebec: 21 (1918)
Mobridge: 95 (1960) Mobridge: 25 (1918)
Pierre: 104 (1937) Pierre: 33 (1983)
Sisseton: 91 (1941) Sisseton: 28 (1973)
Timber Lake: 95 (1914) Timber Lake: 28 (1997)
Watertown: 91 (1941) Watertown: 20 (1918)
Wheaton: 95 (1984) Wheaton: 24 (1918)

Record Precipitation:
Aberdeen: 1.50" (1989)
Kennebec: 2.10" (1950)
Mobridge: 0.96" (1996)
Pierre: 2.65" (1989)
Sisseton: 1.39" (2007)
Timber Lake: 1.35" (1996)
Watertown: 1.14" (2004)
Wheaton: 1.20" (2004) is the U.S. government's official web portal to all federal, state and local government web resources and services.