CBM CBM Severe Weather and Hazardous Conditions

Question 1

What is the minimum sustained wind speed (mph) that classifies a tropical cyclone as a Category 1 hurricane on the Saffir-Simpson scale?

Accepted Answer

74 mph

Answer

64 mph

Answer

85 mph

Answer

96 mph

Question 2

What distinguishes a 'supercell' thunderstorm from an ordinary thunderstorm?

Accepted Answer

A persistent rotating updraft called a mesocyclone

Answer

Greater rainfall totals and wider coverage

Answer

More frequent cloud-to-ground lightning

Answer

Formation exclusively along cold fronts

Question 3

What is 'storm surge' in a hurricane context?

Accepted Answer

An abnormal rise of water above normal tide level driven by a storm's winds and pressure

Answer

The rapid intensification of a hurricane within 24 hours

Answer

Heavy rainfall on the right side of a hurricane

Answer

The forward speed acceleration of a tropical cyclone

Question 4

A tornado WARNING (as opposed to a watch) means what?

Accepted Answer

A tornado has been spotted or indicated by radar and is imminent or occurring

Answer

Conditions are favorable for tornado development in the area

Answer

Strong thunderstorms are possible within the next 6 hours

Answer

A tornado has been confirmed but has already dissipated

Question 5

What minimum sustained wind speed (mph) is required for a tropical cyclone to be classified as a tropical storm?

Accepted Answer

39 mph

Answer

25 mph

Answer

55 mph

Answer

64 mph

Question 6

What is a 'derecho'?

Accepted Answer

A long-lived, fast-moving windstorm associated with a line of severe thunderstorms, producing straight-line winds

Answer

A cold-core upper-level low causing prolonged thunderstorms

Answer

A tornado family outbreak spawned by a single supercell

Answer

A tropical storm remnant moving inland