Tornados
Geography 210 with Splinter at University of Wisconsin - Whitewater
About this deck
By: Brittany Frey
Textbook:
Introducing Physical Geography
Created: 2011-05-10
Size: 20 flashcards
Views: 6
Textbook:
Introducing Physical GeographyCreated: 2011-05-10
Size: 20 flashcards
Views: 6
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Tornado
a small instense vertex of spinning air, often at intense speed
appears dark because of
moisture, dust and debris inside
Tornados rotate:
Counterclockwise in the northern hemisphere
Wind Sheer
change of wind speed or direction with height
Horizontal Vortexes
spinning circulations alligned with the ground in regions where there is significant wind sheers
Mesocyclone
a vertical tower of slowly rotating air
- 80% do not produce tornados
EF Scale
Enhanced Fujita measures from 0 to 1 based on intensity
Large Tornados
make up 5% of all tonados but are responsible for 70% of tornado deaths
Tornados kill
about 75 people every year on average
Why is U.S. a tornado hotspot?
- Warm gulf of Mexico and Cold Arctic air
- flat land in eastern 2/3 of country
- lack of east-west mountains
What state has most Tornados?
Texas 100 annually
State with highest tornado density:
Oklahoma
Tornado facts:
- Spring is peak time
- most likely to occur between 3 and 8 pm
- May has the most, followed by June
- tornado occurance has doubled since the 1950s
- onle 2% of tornados are classified as violent
Multiple Vortex Tornados
small tornados within a larger one
Deadliest tornado in History
Tri-State Tornado of March 18th 1925
Missouri, Illinois, Indiana
killed 700 people
More tornados occur in:
Tornado Alley
More dealths/injuries occur in
Dixie Alley
Vegetation Boundaries and tornados
- Vegetation boundaris increase the occurance and amount of rainfall and promote tornado-genisis during less favorable atmospheric condidtions
- Increases in early summer months
April 2011
deadliest tornado month on record with 467 tornados
April 27th tornados
312
About this deck
By: Brittany Frey
Textbook: Introducing Physical Geography
Created: 2011-05-10
Size: 20 flashcards
Views: 6
Textbook:
Introducing Physical GeographyCreated: 2011-05-10
Size: 20 flashcards
Views: 6
About StudyBlue
STUDYBLUE makes things that make you better at school.
Things like online flashcards with photos and audio.
Things like personalized quizzes and friendly reminders about when (and what) to study next.
Think of it as a digital backpack™: access to all of your study materials online and on your phone.
STUDYBLUE exists to make studying efficient and effective for every student, for free. Join us.
“I have been getting MUCH better grades on all my tests for school. Flash cards, notes, and quizzes are great on here. Thanks!”
Kathy
Kathy