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tornadoes + hurricanes
Terms in this set (45)
A violently rotating column of air stretching from a cloud to the ground
A very large, single-cell thunderstorm with particularly strong updrafts
A vertical column of cyclonically rotating air within a supercell thunderstorm
Amount of warning before a tornado strikes (13 minutes)
States in the Midwest and Great Plains where most tornadoes occur (South Dakota, Nebraska, Kansas, Oklahoma, Texas, Colorado)
A severe storm that develops over tropical oceans and whose strong winds of more than 120 km/h spiral in toward the intensely low-pressure storm center
Hurricanes that occur in the area of the Indian Ocean
Hurricanes that occur in the Eastern Hemisphere
The place where two air masses meet that form storms with lightening and thunder
Giant cumulonimbus cloud mass that forms with lightening and thunder
Circular region of relatively light winds and fair weather found at the center of the hurricane
The strongest winds of a hurricane surrounding the eye
Ocean waters rush into land (most dangerous part of a hurricane)
Tropical cyclone with strong winds of over 39 miles per hour but less than hurricane intensity
Tropical cyclone that has maximum sustained surface winds of 38 mph or less
Spiraling bands of clouds that circle the center of the hurricane. produce heavy wind and rain
Barrier/embankment designed to prevent overflow of water into land
Federal Emergency Management Agency
branch of the US Air Force Reserve that flies into and investigates tropical storms and hurricanes
How are tornadoes measured?
Enhanced Fujita Scale
How are different levels of the Fujita Scale determined?
Describe each of the Fujita Scale levels...
EF0- light damage, 65-85 mph winds
EF1- moderate damage, 86-110 mph winds
EF2- considerable damage, 111-135 mph winds
EF3- severe damage, 136-165 mph winds
EF4- devastating damage, 166-200 mph winds
EF5- incredible damage, more than 200 mph winds
What determines how deadly/destructive a tornado is?
What are the 3 different categories of a tornado?
Weak tornadoes- 110 mph winds, path of damage less than 3 miles
Strong tornadoes- 111-165 mph winds, path of damage 9 miles
Violent tornadoes- 166-200 mph winds, path of damage 100 miles
What is the most common category of a tornado?
What is the least common category of a tornado?
What is the sequence that forms tornadoes?
4. Funnel cloud
What is the average lead time for a tornado?
Why is it important that we improve this?
To allow for more evacuation time
To reduce the death level
What is the most dangerous aspect of a tornado?
True or False: scientists can predict when a tornado will from with 100% certainty
False, there is still no way to predict this exactly
What can be done to prevent loss of life in the event of a tornado?
Move to lower ground
Protect yourselves away from windows
How are hurricanes measured?
• saggier-simpson hurricane wind scale
What are the hurricane ranges?
Category 1: 74-95 mph winds
Category 2: 96-110 mph winds
Category 3: 111-130 mph winds
Category 4: 131-155 mph winds
Category 5: winds greater than 155 mph winds
What happens to a hurricane when it reaches land?
it begins to dissipate
What fuels a hurricane?
heat from the ocean
What conditions does a hurricane need?
hot dry air
warm moist air colliding to make conditions one
parts of a hurricane:
spiral rain bands
What direction do hurricanes move?
counterclockwise - northern hemisphere
southern hemisphere - clockwise
What is the most dangerous part of a hurricane?
What would someone outside experience if they were in the eye of the hurricane?
fair weather, not too harsh
What can be done to prevent loss of life in the event of a hurricane?
evacuation from the town
What happened before, during, and as a result of Hurricane Katrina?
before: tropical depression formed over Bahamas which lead to evacuations
during: struck Monday August 29, damage to levees which lead to 80% of city underwater
result: FEMA establishments all over New Orleans which lead to ,10,000 people homeless and starved
Why was Hurricane Katrina so devastating?
the levees broke
not everyone evacuated
Why would people stay behind and not evacuate?
no cars for evacuation
many didn't believe that the storm was actually going to hit
What are important things we need to take away from the articles we read?
there are many physical weather storms that we are unable to control, we must take action and preparation in order to prepare ourselves for mother nature
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