This Day in National/World Weather History ...
 21 September 1588 → After an unsuccessful battle with the English fleet, the Spanish Armada encountered strong storms and high winds off the coast of Ireland on its way back to Spain. 26 ships are believed to have been lost. The remaining ships limped back to Spain defeated and demoralized, ending the reign of the once unbeatable Spanish Armada.
 21 September 1894 → A huge tornado outbreak swept from Iowa through Minnesota to Wisconsin, with an unusual number of extremely violent tornadoes. The tornado that rampaged through Kossuth County, MN, was likely an F5 as homes and farms were wiped clean from the earth.
 21 September 1909 → A category 3 hurricane crossed the Gulf of Mexico and came ashore in southern Louisiana. The storm inflicted 120 mph winds on southeast Louisiana and took its storm surge 2 miles inland. There were about 371 fatalities despite the Weather Bureau having issued its first warnings for the storm three days earlier.
 21 September 1938 → The New England Hurricane was one of the most destructive and powerful storms ever to strike southern New England. The storm roared ashore over Long Island, NY at nearly 60 mph at the time of high tide. This created a deadly tidal surge, which submerged downtown Providence, RI under 20 feet of water. Hurricane force winds were felt throughout New England, with a gust to 186 mph at the Blue Hill Observatory in Milton, MA. The Great New England Hurricane of 1938 was responsible for over 500 deaths.

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January 30, 2001:

Widespread freezing rain, accumulating from 1/8 to 1/2 inch, changed over to snow late in the evening of the 29th. The snow accumulated from 6 to 12 inches over much of central and northeast South Dakota as well as west central Minnesota. The combination of ice and snow caused significant travel problems, school and flight cancellations and delays, business closings, and numerous vehicle accidents. Several highways were closed along with large portions of Interstates 29 and 90. Some snowfall amounts included, 6 inches at Murdo, 14 SSW Hayes, and 8 E of Eden, 7 inches at Castlewood and 5 NE of Peever, 8 inches at Miller, Gann Valley, Iona, Watertown, Ortonville, and 2 NW Stephan. Nine inches of snowfall accumulated 18 S of Harrold with 10 inches at Tulare and Kennebec, 11 inches at Clark, Clear Lake, and Wheaton, 12 inches at Carpenter, Willow Lake, Milbank, and Browns Valley, and 13 inches at Wilmot.

January 30, 2011:

Heavy snow of 6 to 9 inches fell across part of northeast South Dakota from the afternoon of the 30th to the afternoon of the 31st. Travel was disrupted especially along Interstate-90. Some snowfall amounts included, 6 inches at Webster, Summit, and Clear Lake; 7 inches at Watertown and Milbank; 8 inches at Wilmot and Sisseton and 9 inches at Bryant, Waubay, and Andover.

Record Highs: Record Lows:
Aberdeen: 55 (1931) Aberdeen: -32 (1916)
Kennebec: 66 (1989) Kennebec: -31 (1918)
Mobridge: 58 (1934) Mobridge: -31 (1918)
Pierre: 63 (1989) Pierre: -20 (1996)
Sisseton: 49 (2012) Sisseton: -25 (2004)
Timber Lake: 58 (1931) Timber Lake: -29 (1996)
Watertown: 50 (1989) Watertown: -28 (1918)
Wheaton: 49 (1992) Wheaton: -35 (1916)

Record Precipitation: Record Snowfall:
Aberdeen: 0.50" (1929) Aberdeen: 5.0" (1929)
Kennebec: 0.38" (2001) Kennebec: 5.0" (2001)
Mobridge: 0.80" (1917) Mobridge: 8.0" (1917)
Pierre: 0.12" (2001) Pierre: 1.2" (2009)
Sisseton: 0.11" (2011) Sisseton: 2.4" (2011)
Timber Lake: 0.48" (1917) Timber Lake: 9.4" (1917)
Watertown: 0.50" (2001) Watertown: 6.0" (1929)
Wheaton: 1.07" (2001) Wheaton: 11.0" (2001) is the U.S. government's official web portal to all federal, state and local government web resources and services.