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.

This Day in Weather History Archive

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                   Weather History...

April 16, 1967:

Severe thunderstorms moved through areas of central and eastern South Dakota, producing large hail, damaging winds, and even a few tornadoes. The event began in the mid afternoon hours and lasted into the evening. One of the tornadoes (F1) formed over Lake Poinsette in Hamlin County. From there it moved from southwest to northeast, toward the northern shore, then made a loop and traveled toward the southeast. Two trailer houses and a few small buildings were damaged. 11 people were injured when a trailer house was turned over onto one side, and then turned over on the other side. In Brown County, the storms produced hail 1.75 inches in diameter and 61mph winds.

April 16, 2000:

Heavy snow of 6 to 9 inches fell across parts of central and northeast South Dakota during the morning hours. The heavy snow caused many roads to become slushy and difficult to travel. The heavy snow also downed some tree branches. Some snowfall amounts included, 6 inches at Ferney, Miller, and Webster; 7 inches at Agar, Mellette, and Twin Brooks; 8 inches at Gettysburg, and 9 inches at Faulkton.

Record Highs: Record Lows:
Aberdeen: 92 (1913) Aberdeen: 14 (1953)
Kennebec: 92 (1958) Kennebec: 7 (1961)
Mobridge: 95 (1913) Mobridge: 13 (1951)
Pierre: 91 (1958) Pierre: 15 (1961)
Sisseton: 86 (2002) Sisseton: 12 (1953)
Timber Lake: 83 (1981) Timber Lake: 12 (1961)
Watertown: 86 (1964) Watertown: 13 (1928)
Wheaton: 86 (2002) Wheaton: 11 (1928)

Record Precipitation: Record Snowfall:
Aberdeen: 0.99" (2003) Aberdeen: 7.0" (1910)
Kennebec: 1.33" (2003) Kennebec: 4.0" (1917)
Mobridge: 1.42" (1976) Mobridge: Trace (1973)
Pierre: 0.77" (2003) Pierre: 1.7" (2000)
Sisseton: 1.60" (2003) Sisseton: 7.0" (1945)
Timber Lake: 2.00" (1918) Timber Lake: 0.0"
Watertown: 1.75" (1910) Watertown: 10.0" (1945)
Wheaton: 2.11" (2012) Wheaton: 3.0" (1990) is the U.S. government's official web portal to all federal, state and local government web resources and services.