Clouds And Precipitation Flashcards
1
Q
Above what altitude are Cirro clouds found?
A
+ 16,500ft
2
Q
At what altitude are alto clouds found?
A
6500 - 23,000ft
3
Q
At what altitude are low clouds found?
A
< 6500ft
4
Q
What is the size of drizzle?
A
<0.5mm
5
Q
What is the size of rain?
A
> 0.5mm
6
Q
What is the size of hail?
A
5-50mm
7
Q
What is the average duration for each thunderstorm stage?
A
Developing/initial: 15-30mins
Mature: 15-30mins
Dissipating: 30mins - 2.5hrs
8
Q
By how much should you avoid red or magenta storms?
A
20nm
9
Q
What is the rotational speed and diameter of a tornado?
A
Speed: <100kt
Diameter: 250ft (80m)
10
Q
At what temperature does large, small and no SCWD form?
A
Large: 0 to -20 degrees Celsius
Small: -20 to -40 degrees Celsius
None: >-45 degrees Celsius
11
Q
What is the equation for cloud base?
A
(Temperature - Dew point) x 400
