HW 10 Chpt 9 Flashcards
What is the genesis of a tornado?
The unique structure of individual storms
What is responsible for the creation of horizontal spinning tube of air in supercell storms?
Wind shear in the lower mile of the supercell.
Where in the supercell does the tornado form?
In the rear flank downdraft.
What produces the characteristic hook shape on radar in the supercell storm?
The rear flank downdraft curling around the mesocyclone.
What percentage of super cell storms will form a tornado?
30%
How did the tornado debris in the air appear on the radar image of the Washington, Illinois supercell storm?
Debris is violet in color like hail.
What is the likely path of a tornado?
Tornadoes move in a rather quite straight path.
What is the Fujita scale?
A measure of the wind speed in a tornado by observing the damage it causes.
What is the maximum operational value on the original Fujita scale?
F5
What is the maximum operational wind speeds on the original Fujita scale?
261-318 mph
The Fujita scale is determined by the damage done by a tornado but the damage changes along the path of the tornado. What is used to determine the Fujita value?
The worst damage along the path.
What is the EF rank of a tornado?
The enhanced Fujita scale which has more categories for measured damage and lower wind speeds.
Since 2010 with modern Dopple radar what has been the average tornado warning time?
20 minutes
If you are in a car and going to be over taken by a tornado which of the following is the best strategy for sheltering?
Stay in the car.
