Hazardous Clouds & Weather Flashcards
What is the direction of a warm front?
SW to NE
The air behind a warm front is _____ and more _____ than the air ahead of it.
Warmer / moist
What direction does a cold front move?
NW to SE
Air behind a cold front is noticeably _____ and _____ than the air ahead of it.
colder / drier
Heavy showers or thunderstorms accompany which type of front?
Cold front
Cloud bases are higher in which front?
Cold front
Where is turbulence common in cold fronts?
in and around the convective clouds that produce showers and TS.
True or False?
A summer time trough are similar to cold fronts (without the T change, narrow line of showers and/or TS) and often precede a cold front?
True
True or False?
Non-frontal lows (depression) is a low pressure system that develops from a frontal wave.
False, it does not develop from a frontal wave.
What are the types of non-frontal lows?
Cold low, Lee depression, Polar air depression and Thermal low.
What are the types of fog?
Radiation, Frontal (develops in front of a warm front) and Advection
True or False?
Lower pressure, higher temperature and high humidity all decrease aircraft performance.
True, warm and humid air are less dense.
What sort of weather accompanies a trowal?
Stormy weather, heavy precipitation and colder air at the surface
