Weather Flashcards

1
Q

What is a characteristic of unstable air?

A

Turbulence, showery rain

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2
Q

What is characteristic of stable air?

A

Poor visibility, steady rain

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3
Q

What is standard day?

A

Pressure altitude equals density altitude. 15 degree Celsius and 29.92 hz. (Pressure at sea level)

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4
Q

What is an outlook weather briefing?

A

An outlook weather briefing is requested if your flight is 6 hours or more in the future as well as current weather conditions.

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5
Q

What is a standard weather briefing?

A

Brief statement describing the type, location and movement of weather systems and air masses that may affect your flight.

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6
Q

What are the three things needed to form thunderstorms?

A

Moisture in the air, an unstable atmosphere, and a lifting force.

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7
Q

What is the three stages of thunderstorms?

A

Cumulus stage, mature stage, and dissipating stage.

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8
Q

What is a characteristic of cumulus stage?

A

Updrafts. 3-5 mile height.

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9
Q

Characteristics of the mature stage?

A

Most dangerous stage. Both updrafts and downdraft. Rain marks the beginning of the mature stage. Lightening, turbulence and hail. Microburts can occur at this stage which can last for 2-5minutes. Winds up to 168 mph.

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10
Q

Characteristics of dissipating stage?

A

This stage mostly consists of downdraft. Could be some moisture, light rain.

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