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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November 15, 1988:

A mixture of sleet, freezing rain and snow fell from north central South Dakota into west central Minnesota before changing over to all snow by the afternoon of the 15th. Snow continued across Minnesota during the morning hours on the 16th, along with increasing winds. The strong winds and snow created near zero visibilities due to blowing snow in northwest and west central Minnesota. A 60 mph wind gust was recorded in Morris, MN. Snow and blowing snow blocked roads, caused power outages and closed schools. Snow in many locations accumulated over a sheet of ice that coated roads from preceding rainfall.

Record Highs: Record Lows:
Aberdeen: 72 (1953) Aberdeen: -8 (1900)
Kennebec: 78 (1953) Kennebec: -3 (1916)
Mobridge: 76 (1953) Mobridge: -5 (1955)
Pierre: 74 (1953) Pierre: -2 (1955)
Sisseton: 74 (1953) Sisseton: -3 (1932)
Timber Lake: 73 (1953) Timber Lake: -7 (1932)
Watertown: 71 (1953) Watertown: -5 (1932)
Wheaton: 71 (1953) Wheaton: -7 (1932)

Record Precipitation: Record Snowfall:
Aberdeen: 0.67" (1947) Aberdeen: 6.0" (1947)
Kennebec: 0.92" (1957) Kennebec: 4.0" (1956)
Mobridge: 0.40" (1958) Mobridge: 2.0" (1988)
Pierre: 0.50" (1957) Pierre: 2.8" (1988)
Sisseton: 0.80" (1947) Sisseton: 6.0" (1947)
Timber Lake: 0.48" (1958) Timber Lake: 4.0" (1911)
Watertown: 0.33" (1947) Watertown: 4.9" (1947)
Wheaton: 0.50" (1947) Wheaton: 4.5" (1926)" is the U.S. government's official web portal to all federal, state and local government web resources and services.