Severe Weather Notes Flashcards
Thunder is the sound caused by
Rapid expansion of air along the lightning strikes
What percent of tornadoes happen in the US? What percent of thunderstorms become tornadoes?
75%,1%
How long are tornadoes and what is the average wind speed and spinning wind speed
Length: 8km long 10-60m wide
Wind speed120-180km/hr
Spinning winds up to 500 km/hr
Hurricane wind speed
At least 110 km/hr
Names for hurricanes in western pacific and Indian Ocean
Western: typhoons
Indian: cyclones
Diameter of a hurricane
160-1500 km
How do hurricanes form
A group of thunderstorms split by wind, energy is contained through condensation,
Strongest part of the hurricane and wind speeds
Eye wall
Up to 300 km/hr
Storm surge height
8 m high
160 km long
The storm surge has its greatest height right before it crashes into the
Shore
Thunderstorms are caused when
Warm, moist air rises
Lightning happens when
An electric discharge that takes place between a
Positively charged area, and a negatively charged area