31 May


US Weather events

US Weather events

1889 131 yrs ago
The Johnstown disaster occurred, the worst flood tragedy in U.S. history. Heavy rains collapsed the South Fork Dam sending a thirty foot wall of water rushing down the already flooded Conemaugh Valley. The wall of water, traveling as fast as twenty-two feet per second, swept away all structures, objects and people. 2100 persons perished in the flood. (David Ludlum)
1941 79 yrs ago
Thunderstorms deluged Burlington KS with 12.59 inches of rain to establish a 24 hour rainfall record for the state. (The Weather Channel)
1985 35 yrs ago
Severe thuunderstorms spawned forty-one tornadoes across the Lower Great Lakes Region and southeastern Ontario which killed 74 persons. (Storm Data)
1987 33 yrs ago
Thunderstorms in New England produced wind gusts up to 90 mph at Worcester, MA, and Northboro, MA, and hail an inch and a half in diameter at Williston, VT. Unseasonably hot weather prevailed in the northeastern U.S. The afternoon high of 94 degrees at Portland, ME, was a record for the month of May. (Storm Data)
1988 32 yrs ago
"Hot and humid weather prevailed in the eastern U.S. Thirteen cities reported record high temperatures for the date. Cape Hatteras, NC, reported their first ninety degree day in May in 115 years of records. ""Dust buster"" thunderstorms in northwest Texas drenched Amarillo with more than three inches of rain. (The National Weather Summary)"
1989 31 yrs ago
Thunderstorms produced severe weather and torrential rains in northern Indiana, northern Ohio and southern Lower Michigan. Saint John IND was drenched with four inches of rain in two hours, and Woodland MI was deluged with two inches in twenty minutes. Pittsburgh PA reported a record 6.55 inches of rain for the month of May, with measurable rain reported on twenty-five days during the month. (The National Weather Summary)
1990 30 yrs ago
Afternoon and evening thunderstorms developing along a warm front produced severe weather from northwest Texas to southeastern Louisiana. The thunderstorms spawned sixteen tornadoes, including thirteen in northwest Texas. One tornado hit the town of Spearman, TX, causing more than a million dollars damage, and seven other tornadoes were reported within twenty-five miles of Spearman. Thunderstorms over northwest Texas also produced baseball size hail at Monahans, and wind gusts to 80 mph at Paducah. (The National Weather Summary)
Origine dati: http://www.weatherforyou.com/


World records

World records

2013 7 yrs ago
Officially the widest tornado on record - El Reno, Oklahoma tornado, with a width of 2.6 mi (4.2 km) at its peak. This is the width found by the NWS based on preliminary data from University of Oklahoma RaxPol mobile radar.


F5 tornadoes

F5 tornadoes

1947 73 yrs ago
Leedey, Oklahoma 2014 fatalities
This tornado reportedly left more intense damage than the previous event did in Woodward. Many structures were swept away, leaving no debris or grass in some areas. Yards at some residences were stripped of their lawns and all vegetation, and several inches of topsoil were removed as well. The F5 rating is widely accepted, though the tornado was very slow-moving, which may have exacerbated the level of destruction to some extent.
Rated F5/EF5, or mentioned as a possible F5/EF5 by tornado expert Thomas P. Grazulis
1985 35 yrs ago
Niles, Ohio–Wheatland, Pennsylvania 2002 fatalities
1985 United States-Canadian tornado outbreak – This tornado caused F5 damage along much of its path through Niles and Wheatland. A shopping center in Niles was obliterated, sustaining F5 damage and several deaths. Metal girders at the center twisted and buckled.Well-built homes were swept away, and 75,000-pound (34,020 kg) petroleum storage tanks were ripped from their anchors and thrown hundreds of feet. Pavement was scoured from a parking lot, and a steel-frame trucking plant was obliterated and partially swept away with the beams severely mangled. Routing slips from the plant were found wedged into the remaining asphalt of parking lot. An airplane wing was carried 10 miles from where it originated.
Official F5/EF5; undisputed
2013 7 yrs ago
El Reno, Oklahoma 2012 fatalities
2013 El Reno tornado – Largest tornado on record at 2.6 miles (4.2 km) wide. Was initially rated EF5 based solely on mobile Doppler radar measurements, which recorded winds up to 295 mph (470 km/h). However, the most significant structural damage was rated EF3, as the tornado did not strike any buildings when the EF5 winds were recorded. Rating was eventually downgraded to EF3 because of this, though the practicality of the downgrade has been disputed by some meteorologists.
Officially ranked below F5/EF5, but rating is disputed; event may have been F5/EF5


Deadly earthquakes

Deadly earthquakes

31.05.1946 03:12 UTC 74 yrs ago
Turkey (mappa) Magnitudo: 5.9 UK
Total deaths resulting from an earthquake (Utsu catalog)1300

31.05.1970 20:23 UTC 50 yrs ago
Peru (mappa) , 73 km deep Magnitudo: 7.9 UK
Secondary effectslandslide
Deaths resulting from earthquake shaking0
Total fatalities resulting from earthquake shaking and secondary effects70000
Total deaths resulting from an earthquake (Utsu catalog)66794
Total deaths resulting from an earthquake (Emergency Events Database)66794





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