Hazards Flashcards
1
Q
Severce icing temp.
A
15c to -2c
2
Q
Carburetor icing temp
A
-10 to 30c
3
Q
Clear ice
A
Large supercooled waterdroplets the freeze slowly and form a layer above surfaces - very dangerous
4
Q
Rime ice
A
Freeze instantly on impact
5
Q
Hoar Frost
A
6
Q
Thunderstorm development conditions
A
A ELR greater than SALR, high humidity, trigger action to activate lifting / convection
7
Q
Stages of thunderstorm
A
Developing cumulus stage (updraughts) 20 min
Mature stage (both up and downdraughts) 40min
Dissipation stage (downdraughts), rain falling, up to 2 hours
8
Q
Mature stage of thunderstorm
A
2000fpm downdraughts, 10kfpm updraughts. ANvil forming.
9
Q
Dissipating stage
A
Downdrafts
10
Q
Virga
A
Percipitiation that does not reach the ground
11
Q
Microburst
A
A cold downburst of air that lasts 1-5 min up to 5km wide
