Which of the Following Statements Are True About Tornado Detection

Multiple Choice

Which of the following statements are true about tornado detection and warnings?

A) Traditionally, when the very first tornado from a storm system develops, the condition in effect from the National Weather Service is a tornado watch.
B) A tornado warning is only issued once an actual funnel or tornado has been identified.
C) A hook echo is the diagnostic feature in radar that indicates strong rotation within a thunderstorm and possible tornado development.
D) NEXRAD is a network of anemometers that allow the National Weather Service to track tornado wind speeds.
E) Doppler radar technology allows tornado warnings to be issued faster and with greater accuracy.