21 August


US Weather events

US Weather events

1883 134 yrs ago
A tornado hit Rochester, MN, killing 31 persons and wrecking 1351 dwellings. (David Ludlum)
1888 129 yrs ago
A tornado swarm occurred in Maryland and Delaware. Many waterspouts were seen over Chesapeake Bay. (Sandra and TI Richard Sanders - 1987)
1918 99 yrs ago
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 34 yrs ago
The temperature at Fayetteville, NC, soared to 110 degrees to establish a state record. (The Weather Channel)
1987 30 yrs ago
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)
1988 29 yrs ago
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)
1989 28 yrs ago
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)
Origine dati: http://www.weatherforyou.com/


World records

World records

1521 496 yrs ago
The earliest known tornado in the Americas - an apparent tornado struck Tlateloclo (today Mexico City), two day before the Azetc capital´s fall to Cortes.


F5 tornadoes

F5 tornadoes

1883 134 yrs ago
Rochester, Olmsted County, Minnesota 1980 fatalities
1883 Rochester tornado – 10 farms outside the town were leveled, and some homes were swept away. A metal railroad bridge was completely destroyed.
Rated F5/EF5, or mentioned as a possible F5/EF5 by tornado expert Thomas P. Grazulis


Deadly earthquakes

Deadly earthquakes

21.08.1928 19.01 UTC 89 yrs ago
Iran (mappa) , 9 km deep Magnitudo: 5.4 UK
Total deaths resulting from an earthquake (Utsu catalog)10

21.08.2000 13.25 UTC 17 yrs ago
China (mappa) , 5.4 km deep Magnitudo: 4.9
Deaths resulting from earthquake shaking1
Total fatalities resulting from earthquake shaking and secondary effects1
Total deaths resulting from an earthquake (Utsu catalog)1
Total deaths resulting from an earthquake (Emergency Events Database)1

21.08.2008 12.24 UTC 9 yrs ago
China (mappa) Magnitudo: 5.9





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