Precipitation Flashcards

1
Q

What happens to an engine when the engine engulfs too much water?

A

Engine flame out.

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2
Q

What is the average diameter of a raindrop?

A

2000 um

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3
Q

What are the two processes of small droplets growing to precipitation?

A

Ice crystal process - coalescence process

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4
Q

What is the Bergeron - findeisen ?

A

Bloody freezing ! Ice crystal process.

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5
Q

How to water droplets grow in size in the coalescence theory?

A

Collisions.

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6
Q

Whats a hydrometor?

A

Moving water particles.

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7
Q

Whats a suspended particle example?

A

Cloud - fog - mist

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8
Q

Whats a falling particle example?

A

Drizzle - rain - snow - hail

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9
Q

What is the diameter of drizzle?

A

0.5mm

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10
Q

What type of cloud does drizzle fall from?

A

Stratus.

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11
Q

What may happen to supercooled rain when it imapcts a surface?

A

Freezes.

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12
Q

What are snow grains?

A

Small white particles of ice.

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13
Q

Whats another word for snow pellets is blank hail.

A

Soft hail

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14
Q

What do snow pellets fall from?

A

Cumulus or cb

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15
Q

What letters are used for hail?

A

GR

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16
Q

What are the letters for snow pellets?

17
Q

What is the intermediate stage between the snow pellet and the hailstone?

A

Small hail.

18
Q

Whats the diameter of ice pellets?

A

Less that 5mm

19
Q

How are ice pellets formed?

A

Snowflakes melt then re freeze.

20
Q

What is diamond dust?

A

Falls from a clear sky as ice crystals.

21
Q

What is virga?

A

When ice or rain evaporates before it hits the ground.

22
Q

What is the visibility in drizzle?

A

Less than 500m

23
Q

Whats the visibility in heavy snow?

24
Q

Whats the visibility in heavy snow?

25
Whats the visibility for blowing snow?
1m
26
What does FU sound for?
Smoke.
27
What does VA stand for?
Volcanic ash.
28
What does PR stand for?
Partial.
29
What does BC stand for?
Patches.
30
What does BLSN mean?
Blowing