Thunderstorms

Question 1

What is indicated by the term “embedded thunderstorms”?

Answer 1

Thunderstorms are obscured by massive cloud layers and cannot be seen.

Question 2

Which weather phenomenon signals the beginning of the mature stage of a thunderstorm?

Answer 2

The start of rain at the surface.

Question 3

Where do squall lines most often develop?

Answer 3

Ahead of a cold front.

Question 4

During the life cycle of a thunderstorm, which stage is characterized predominately by downdrafts?

Answer 4

Dissipating.

Question 5

Which weather phenomenon is always associated with a thunderstorm?

Answer 5

Lightning.

Question 6

Which thunderstorms generally produce the most severe conditions, such as heavy hail and destructive winds?

Answer 6

Squall line.

Question 7

To maintain control if you unintentionally penetrate embedded thunderstorm while in IMC, you should

Answer 7

Set power for recommended turbulence penetration airspeed an attempt to maintain a level flight attitude.

Question 8

What is an indication that downdrafts have developed and the thunderstorm cell has entered the mature stage?

Answer 8

Precipitation begins to fall from the cloud base.

Question 9

What are the requirements for the formation of a thunderstorm?

Answer 9

Sufficient moisture, an unstable lapse rate , and a lifting action.

Question 10

You see the need to deviate from a storm ahead. You know that

Answer 10

ATC workload may affect their ability to accommodate this request.

Question 11

It is dangerous to fly in the vicinity of a dissipating thunderstorm because this stage of its life cycle is characterized by

Answer 11

Downdrafts.

Question 12

When circumnavigating a large cumulonimbus cell, flying under the anvil

Answer 12

should be avoided due to the possibility of hail.

Question 13

You are on an IFR flight when you receive a weather update. A fast-moving cold front is approaching your route of flight. You are currently flying in a warm area with high moisture. What weather conditions do you expect based on this update?

Answer 13

Squall lines with hazardous weather conditions.

Question 14

A flight through the mature stage of a thunderstorm, characterized by rain beginning on the surface, would experience

Answer 14

strong winds, heavy rain and icing.

Question 15

What weather phenomenon poses the greatest hazards to aircraft when operating near thunderstorms?

Answer 15

Lightning.

Question 16

When flying under a thunderstorm which has just entered the mature stage, as demonstrated by rain starting of fall at the base, a pilot might

Answer 16

Downdrafts.

Question 17

The highest probability of a lightning strike occurring to an airplane at altitude is

Answer 17

highest at OAT between -5C and 5C.

Question 18

What weather conditions would you expect if the weather briefer tells you that “extensive cumulonimbus clouds can be expected along your route of flight?”

Answer 18

Thunderstorms and rain.