Frontal Weather Flashcards
What type of front would generally produce the widest area of clouds?
Warm
What are 3 factors that determine frontal weather?
1) Amount and rate of ascent of the warm air mass
2) Stability of the warm air mass
3) Moisture content of the warm air mass
What is the sequence of clouds expected as a warm front approaches?
CI, CS, AS, NS
What additional types of clouds could be expected if the warm air is unstable?
Convective clouds
The hazard of thunderstorms at warm fronts is…
They are hidden in other clouds
The method of production of the ST below the frontal surface is…
Evaporation of precipitation
With the approach of an active winter warm front (you are in the cold air initialy), the sequence of precipitation expected would be…
SN, PL, FZRA, RA
Generally,, clouds at a cold front tend to be…
Convective, narrow band
What is the relationship between cold front speed and cloud type?
Faster cold fronts more active (Thicker, more active clouds)
Slow moving cold fronts weather ( Fewer convective clouds and more layered)
The weather which occurs at trowal is
like a warm and cold front combined
What is the vertical sequence of precipitation encountered as one rises from surfaces in PL?
PL, FZRA, RA, SN
What is the most common aviation weather problem encountered ahead of warm fronts
Low ceiling and low visibility
Where is the worst weather encountered along a trowal relative to the position of the frontal wave
near warm fronts
What type of layered clouds, and what type of convective cloud would be seen with the approach active cold front with a moist unstable warm air mass?
1) AC/AS
2) TCU/CB
