Weather History for August 21

Explore significant weather events that occurred on this date throughout history, including hurricanes, tornadoes, blizzards, floods, and extreme temperature records.

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10 Historical Weather Events on August 21
1856 — The Charter Oak was an unusually large white oak tree growing from around the 12th or 13th century until it fell during a windstorm on this day in 1856. According to tradition, Connecticut's Royal Charter of 1662 was hidden within the hollow of the tree to thwart its confiscation by the English governor-general. The oak became a symbol of American independence and is commemorated on the Connecticut State Quarter.
1883 — An estimated F5 tornado caused extensive damage to Rochester Minnesota on this day. The enormous roar was said to have warned most Rochester residents, as the massive funnel cut through the north side of town. Over 135 homes were destroyed, and another 200 damaged. Many of the 200 plus injuries were severe, and other deaths probably occurred but not listed as part of the 37 total mentioned. This damaging tornado eventually led to the formation of the Mayo Clinic.
1888 — A tornado swarm occurred in Maryland and Delaware. Many waterspouts were seen over Chesapeake Bay. (Sandra and TI Richard Sanders - 1987)
1893 — Four hurricanes are observed in the Atlantic Ocean at the same time. Over a century would pass, 1998 before four hurricanes would again rage together in the Atlantic.
1918 — A tornado struck Tyler, MN, killing 36 persons and destroying most of the business section of the town resulting in a million dollars damage. (David Ludlum)
1983 — The temperature at Fayetteville, NC, soared to 110 degrees to establish a state record. (The Weather Channel)
1987 — Early morning thunderstorms produced severe weather in eastern Iowa and west central Illinois. Thunderstorms produced wind gusts to 82 mph at Moline IL, and tennis ball size hail at Independence IA. Rock Island IL was drenched with 3.70 inches of rain. Total damage for the seven county area of west central Illinois was estimated at twelve million dollars. (National Weather Summary) (Storm Data)
1988 — Thunderstorms spawned several tornadoes in Iowa, produced wind gusts to 63 mph in the Council Bluffs area, and drenched Sioux Center IA with up to 6.61 inches of rain. (Storm Data) (The National Weather Summary)
1989 — Afternoon and evening thunderstorms produced severe weather from Kansas to Minnesota and North Dakota. Thunderstorms in Minnesota produced baseball size hail from Correll to north of Appleton. Thunderstorms in north central Kansas produced wind gusts higher than 100 mph at Wilson Dam. Thunderstorms around Lincoln NE produced baseball size hail and up to five inches of rain, and Boone NE was deluged with five inches of rain in an hour and a half. (The National Weather Summary) (Storm Data)
1994 — Hurricane John, about 345 miles south of Hilo, Hawaii had winds of 175 mph and pressure at 920 millibars or 27.17 inches of mercury, making it one of the strongest hurricanes ever in the Central Pacific. The 31-day existence made John the longest-lasting tropical cyclone recorded in both the Pacific Ocean and worldwide, surpassing both Hurricane Tina's previous record in the Pacific of 24 days in the 1992 season and the 1899 San Ciriaco hurricane's previous world record of 28 days in the 1899 Atlantic season. John was also the farthest-traveling tropical cyclone in both Pacific Ocean and worldwide, with distance traveled of 7,165 miles, out-distancing previous record holders Hurricane Fico in the Pacific of 4,700 miles in the 1978 season and Hurricane Faith worldwide of 6,850 miles in the 1966 Atlantic season.

About Weather History

Weather has always played a significant role in shaping human history. From devastating hurricanes and tornadoes to record-breaking temperatures and historic blizzards, extreme weather events have left lasting impacts on communities across the United States and around the world.

This collection documents notable weather events that occurred on August 21 throughout recorded history. These events include tropical storms and hurricanes, tornado outbreaks, severe thunderstorms, winter storms and blizzards, flooding events, heat waves and cold snaps, and other significant meteorological phenomena.

Types of Events Documented

  • Tropical Systems: Hurricanes, tropical storms, and their impacts
  • Severe Weather: Tornadoes, severe thunderstorms, and damaging winds
  • Winter Weather: Blizzards, ice storms, and record snowfall
  • Temperature Extremes: Heat waves, cold outbreaks, and record temperatures
  • Flooding: Flash floods, river flooding, and coastal flooding
  • Other Events: Droughts, wildfires influenced by weather, and unique phenomena

Understanding historical weather patterns helps us appreciate the power of nature and the importance of weather preparedness. Browse through different dates to discover what weather events shaped history on any given day of the year.