Airmass thunderstorms are most common during ________ .
A. hot summer afternoon
B. cold winter afternoon
C. warm spring afternoon
D. cool autumn afternoon
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_______ thunderstorms can occur in late spring and summer during the late night or early morning.
Airmass
B. Frontal
C. Nocturnal
Daytime
Which one is not a hazard produced by thunderstorm?
A. lightning
B. turbulence
C. tornado
D. CAT
The _______ cloud is the most turbulent of all clouds.
A. cumulus
B. cumulonimbus
C. convection
D. updraft
Indications of severe turbulence within the storm system include all the following but ______.
A. cumulonimbus cloud
B. frequent lightning
C. roll clouds
D. gusty wind