Module 9 Cyclonic Storms Flashcards
What are cyclonic storms?
Low-pressure systems that rotate counterclockwise in the Northern Hemisphere and clockwise in the Southern Hemisphere.
What are the types of cyclonic storms?
- Tropical cyclones
- Polar cyclones
- Warm-core mesocyclones
What is a warm-core mesocyclone?
A specific type of cyclone that can form tornadoes.
What do tropical cyclonic storms originate as?
Tropical depressions or monsoon troughs.
What wind speed defines a tropical depression?
Less than 38 mph (61 km/h).
What happens when a tropical depression’s wind speed exceeds 38 mph?
It is classified as a tropical storm.
At what wind speed is a tropical storm upgraded to a hurricane?
When wind speed exceeds 73 mph.
What conditions are necessary for tropical cyclonic system formation?
- Area of disruptive weather with unstable air
- Warm tropical water greater than 80°F (26.5°C)
- Sufficient Coriolis force
- High humidity
- Weak vertical wind shear (less than 22 mph)
What is the Intertropical Convergence Zone (ITCZ)?
A region where the wind from both hemispheres collides and rises.
True or False: Tropical cyclonic storms are common in the South Atlantic.
False.
What is the eye of the storm?
An area of sinking air in the center of a tropical cyclone with no wind or rain.
What is the Saffir-Simpson Hurricane Wind Scale used for?
To categorize hurricanes based on wind speed and damage.
What is the hurricane season in the Atlantic?
June 1 to November 30.
Where do hurricanes typically form?
In the Atlantic and northeast Pacific, north of the equator.
What is the primary difference between hurricanes and typhoons?
Their location and the agency that tracks them.
What was the strongest typhoon in recorded history?
Super Typhoon Nancy with wind speeds of 215 mph.
What was the strongest typhoon to make landfall?
Super Typhoon Haiyan with wind speeds of 195 mph.
What is the largest tropical cyclone in recorded history?
Super Typhoon Tip with a diameter of 1,380 miles.
What are cyclones called in the Southern Hemisphere?
Cyclones.
What is the cyclone season in Australia?
November 1 to April 30.
What was the highest-intensity storm to hit Australia?
Severe Tropical Cyclone Monica.
What significant damage did Cyclone Yasi cause?
Cost $3.6 billion in damage in Australia.
Fill in the blank: Many people call destructive storms ‘_______.’
[acts of God].
According to Genesis, what caused the destructive natural events?
The fall of mankind.
What does the author suggest Christians should do for those affected by storms?
Help and serve people affected by storms.
