Shared Flashcard Set

Details

1 - ESS 111 || 11/1/2018
1 - ESS 111 || 11/1/2018
15
Environmental Studies
Undergraduate 1
11/01/2018

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Cards

Term
List 3 Criteria For Severe Thunderstorms
Definition
Winds >= 58 mph

Hail >= 1 inch

Presence Of A Tornado
Term
How Many Criteria For A Severe Thunderstorm Must Be Present For A Thunderstorm To Be Severe?
Definition
One
Term
Define A Bow Echo
Definition
Characteristic radar return from a mesoscale convective system that is shaped like an archer’s bow. These systems can produce severe straight-line winds and occasionally tornadoes, causing major damage.
Term
Where Are The Strongest Winds In A Bow Echo?
Definition
The Apex
Term
The longer a bow echo lasts the more likely what will form?
Definition
A vortex in the form a of bookend vortex, a comma head or at the apex.
Term
Define Supercell Storms
Definition
Storms with long-lived cores and rotating updrafts.
Term
Supercells are frequent producers of what?
Definition
Large Hail

Strong Winds

Tornadoes
Term
Name Three Unique Qualities of Supercell Storms
Definition
Distinctive Radar Reflectivity

Mesocyclones

Different Storm Motion
Term
Define Mesocyclones
Definition
Rotating vortex in conjunction with the updraft in a Supercell Storm.
Term
How Do Super Cell Storms Develop Mesocyclones?
Definition
Tilting environmental and/or locally generated horizontal vorticity.
Term
Define Vorticity
Definition
Measure of rotation
Term
Hook Echo
Definition
Pendant or hook-shaped weather radar signature as part of some supercell thunderstorms.
Term
On average nationwide, what percent of Supercell Storms produce tornados?
Definition
20%
Term
What are some of the physical features of a classic supercell?
Definition
Overshooting Top

Anvil

Precipitation

Wall Cloud
Term
Why Do Most People Die In The Southeast from tornadoes than in the Great Plains?
Definition
Lack of shelters

Lack of substantial structures

Low visibility

Higher concentrated population density
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