21 March


US Weather events

US Weather events

1932 94 yrs ago
A tornado swarm occurred in the Deep South. Between late afternoon and early the next morning severe thunderstorms spawned 31 tornadoes in Alabama, Mississippi, Georgia and Tennessee. The tornadoes killed 334 persons and injured 1784 others. Northern Alabama was hardest hit. Tornadoes in Alabama killed 286 persons and caused five million dollars damage. (David Ludlum)
1952 74 yrs ago
Severe thunderstorms spawned thirty-one tornadoes across Arkansas, Tennessee, Missouri, Mississippi, Alabama and Kentucky. The tornadoes killed 343 persons and caused 15 million dollars damage. Arkansas and Tennessee each reported thirteen tornadoes. The towns of Judsonia AR and Henderson TN were nearly wiped off the map in what proved to be the worst tornado outbreak of record for Arkansas. A tornado, one and a half miles wide at times, left a church the only undamaged building at Judsonia. (David Ludlum)
1987 39 yrs ago
A winter storm in the Northern High Plains Region produced blizzard conditions in western South Dakota. Winds gusted to 70 mph at Rapid City SD, and snowfall totals ranged up to 20 inches at Lead SD. The high winds produced snow drifts six feet high. (The National Weather Summary)
1988 38 yrs ago
Bitterly cold weather prevailed across the northeastern U.S. Portland ME reported their coldest spring day of record with a morning low of 5 above, and an afternoon high of just 21 degrees. Marquette MI reported a record low of 15 degrees below zero. (The National Weather Summary)
1989 37 yrs ago
Snow blanketed the northeastern U.S. early in the day, with six inches reported at Rutland VT. Morning and afternoon thunderstorms produced large hail and damaging winds from southwestern Mississippi to southwest Georgia. (The National Weather Summary)
1990 36 yrs ago
The first full day of spring was a cold one for the eastern U.S. Freezing temperatures damaged 62 percent of the peach crop in upstate South Carolina, and 72 percent of the peach crop in the ridge area of South Carolina. Elkins WV, which a week earlier reported a record high of 82 degrees, was the cold spot in the nation with a morning low of 16 degrees. (Storm Data)
Source de données: http://www.weatherforyou.com/


World records

World records

1951 75 yrs ago
Fastest ever recorded daily wind speed average: 174 km/h (108 mph), Port Martin, Adelie Land, Antarctica


F5 tornadoes

F5 tornadoes

1952 74 yrs ago
Byhalia, Mississippi–Moscow, Tennessee 2009 fatalities
March 1952 Southern United States tornado outbreak – Officially rated F4 in tornado databases, however, the National Climatic Data Center lists this as an F5 event in a Tech Memo reporting all known F5 tornadoes. The only possible F5 damage was to a concrete block structure that may or may not have been steel-reinforced.
Listed as an F5/EF5 on the 2000 NCDC tornado climatology memo


Deadly earthquakes

Deadly earthquakes

21.03.1977 21.18 UTC 49 yrs ago
Iran (carte) , 12 km deep Magnitude: 6.7
Deaths resulting from earthquake shaking167
Total fatalities resulting from earthquake shaking and secondary effects167
Total deaths resulting from an earthquake (Utsu catalog)167
Total deaths resulting from an earthquake (Emergency Events Database)167





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