Severe weather
tropical weather
100

This is the offical agency in the United States for issuing warrnings and forecasts 

What is the National Weather Service (NWS)

100

This hurricane devestated New Orleans in august 2005

what is hurricane Katrina 

200

This is the area of a supercell that rotates

what is the mesocylone

200

USALLY found in only significant tropical cyclones, this area near the center is USALLY calmer and contains the area of lowest pressure

what is the eyewall

300

this is the largest tornado outbreak in recorded history

what is the 2011 super outbreak

400

This is the offical rating/windspeed of the Moore 2013 tornado

what is 210MPH

500

this is the theory that says the vortex or suction vortices of a tornado form from the ground and work there way up to the storm

what is the ground up theory

M
e
n
u