Tornado Season Is Here!

Posted by Nate Wek on
Damage in Delmont, SD on Sunday after the tornado hit.
The Argus Leader in Sioux Falls

Delmont, South Dakota, a town of 234 people, was hit by a devastating tornado on Sunday morning. Nine were injured by this storm, but thankfully nobody was killed. Even though the western part of the state was experiencing blizzard conditions around the same time as the east river twister, it’s clear tornado season is upon us.

On May 8, 1965, 50-years ago, South Dakota experienced its strongest tornado ever recorded. An EF-5 tornado tore through south central South Dakota across the counties of Gregory and Tripp. It destroyed almost everything in its path. Sunday morning’s tornado in Delmont was recorded as an EF-2 tornado.

PBS Nova took a look at some of the deadliest Tornadoes ever recorded by examining the summer of 2011.

To judge a tornado's force after it strikes, the U.S. National Weather Service uses a rating system it adopted in 1973 called the Fujita Scale. Devised by meteorologist Theodore Fujita in 1970, the F-scale enables experts to estimate a tornado's maximum wind speed in relation to the single most destructive thing it did.

Screen Shot 2015-05-11 at 11.01.03 AM.png

EF-0 - Tree branches broken, street signs or billboards bent, some damage to chimneys, some roof shingles removed.

EF-1 - Parts of roofs torn off, mobile homes shifted or overturned, moving automobiles pushed off roads, shallow-rooted trees toppled.

EF-2 - Mobile homes demolished, roofs largely torn from frame houses, large trees snapped or uprooted, light objects thrown as missiles.

EF-3 - Roof and exterior walls torn from sturdy houses, trains overturned, large forest swaths flattened.

EF-4 - Sturdy houses leveled, cars and structures with weak foundations blown great distances, other large and heavy objects thrown as missiles.

EF-5 - Sturdy houses obliterated and their debris swept away, tree debarked, steel-reinforced concrete structures badly damaged, heavy objects thrown in excess of 300 feet.

The Mercy of the Sky
NPR News

The Mercy of the Sky

A correspondent for Yahoo News and an Oklahoma City native returns home to provide an insider's account of Oklahoma's deadliest tornado, which struck May 20, 2013 and destroyed ...

Monday Update on the Delmont Tornado
SDPB Radio

Monday Update on the Delmont Tornado

People in the town of Delmont are now able to sift through the rubble after a tornado. The storm struck the tiny town in southeast South Dakota on Sunday morning. Crews are work...


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