All About Clouds

Jordan Bradfield

CFI-I

Dec. 8, 2009

Intended Learning Outcome

• By the end of this lesson, the student will be able to correctly identify clouds that are presented to them as well as in the actual environment.

Pre-Test

1. How is cloud type determined?A. Height of their bases

B. With or without precipitation

C. Color shade

2. How many types of clouds are there?

A. 5

B. 1

C. 7

D. 4

3. What cloud is generally associated with a thunderstorm?

A. Low

B. Middle

C. High

D. Cloud with vertical development

Why are Clouds Important?

• Understanding the different types of clouds is important in the safety of every flight.

• “Clouds are visible indicators and are also indicative of future weather.” (PHAK 11-15)

• Could decide whether you embark on your flight or not.

• http://www.aopa.org/asf/epilot_acc/atl03la094.html

Cloud Types

• Classified based on height– Low– Middle – High – Vertical Development

Classifications (appearance and composition)

• Cumulus- cotton balls

• Stratus- layered

• Cirrus- fibrous, wispy

• Nimbus- rain-bearing

• Lenticular- lens shaped

Composition

• Low Clouds- water droplets, supercooled droplets

• Middle Clouds- water, ice crystals, supercooled droplets

• High Clouds- ice crystals

• Vertical Development- contain all types

Clouds with Vertical Development

• Indicate an unstable atmosphere

• Can produce lightning, hail, tornadoes, gusty winds, and wind shear

• Very turbulent

• Extremely hazardous

Closing

• Clouds can indicate imminent weather conditions and must be considered before every flight.

• Clouds with vertical development are the most hazardous and produce intense weather phenomena.

• Any Questions??

Post Test

1. How is cloud type determined?A. Height of their bases

B. With or without precipitation

C. Color shade

2. How many types of clouds are there?

A. 5

B. 1

C. 7

D. 4

3. What cloud is generally associated with a thunderstorm?

A. Low

B. Middle

C. High

D. Cloud with vertical development

Identification

Source List

• Pilot’s Handbook of Aeronautical Knowledge FAA-H-8083-25A