February 19, 1884 tornado

A presentation by Jessie Jensen

How tornadoes work

1. Funnel appears -swirling dust on ground

2. Column Forms-air temp drops-visible

3.Dyling down-lasted a few secs. to an hour

F-scale

Intensity Wind Speed

F0 Gale 40-72 mph

F1 Moderate 73-112 mph

F2 Significant 113-157 mph

F3 Severe 158-206 mph

F4 Devastating 207-260 mph

F5 Incredible 261-318 mph

F6 Inconceivable 319-379 mph

Strength of the tornado

• 37 tornadoes hit the southeast

• was an F4

• Brick school building exploded

Damage it caused

• Killed 600 people

• Injured 1,000

• Classified as an F4 tornado • Wind speed: 207-260 mph

The areas it hit

• It went for 9 miles

• Lasted 10 days

• Avoided urban areas

• High property loss • Second biggest tornado in history

Tornado Extra

http://www.youtube.com/watch?v=auYHb7-E4iw&feature=player_embedded#at=

411.What is the death count of the 1984

tornado?2.What might it encourage for people to do?3.In what ways does it affect technology?4. Do you think the damage could have

been worse? If so what? 5.What was the ranking on the F-scale?

Bibliography • Tornado strike the Southeast 12/9/09[http://www.history.com/this-day-in-history.do?

action=Article&id=53101]• Louisville, KY 12/9/09[http://www.crh.noaa.gov/lmk/?

n=tornado_climatology_february191884]• The Fujita Scale of Tornado Intensity 12/14/09[http://www.tornadoproject.com/fscale/

fscale.htm]• Tornadoes – Forces of Nature 12/14/09[http://library.thinkquest.org/C003603/english/

tornadoes/casestudies.shtml]