precipitation
What is precipitation
Any type of water drops that form in the atmosphere and fall to the ground
What is a front?
The boundary layer between to types of air masses
What are some hazards of thunderstorms?
Turbulence, icing, hail, ceiling and visibility, lighting, squall line, tornadoes
Which turbulence comes from air spilling over the wingtips of an airplane?
Wake Turbulence
What is the most dangerous type of icing?
Clear
Name some of the dangers of precipitation in aviation
reduces visibility, create icing conditions, affect takeoff and landing performance
What moves faster: a cold front or a warm front?
Cold front
How far does the FAA recommend we stay away from thunderstorms?
20 miles or more
Frontal turbulence
What should you do if you encounter icing inflight?
Climb descend or adjust your route out of the visible moisture
What type of precipitation forms when ice crystals fall at a steady rate
Snow
What is the difference between a stationary front and an occluded front?
Stationary front are when two air masses are equal, occluded front is when a fast cold airmass catches up to slow warm front
What are the three ingredients for a thunderstorm to form?
Sufficient water vapor, an unstable lapse rate, and a lifting force
What kind of turbulence is caused by friction between the air and the ground, especially irregular terrain and man made obstacles
Mechanical turbulence
What temperatures do rime, clear and mixed ice form (C)
Rime: -15 to -20 deg
Clear: 0 to -10 deg
Mixed: -10 to -15 deg
What classifies precipitation as “drizzle”
Very small water droplets, smaller than 0.02 inches in diameter
Cold: showery/heavy precipitation, thunderstorms, colder air
Warm: layered clouds, steady precipitation, more humid weather
What are the three stages of a thunderstorm?
Cumulus, Mature, Dissipating
What type of turbulence can be expected on warm summer days when the sun heats the earths surface unevenly?
Thermal (Convective) turbulence
What could make your tailplane stall if it has ice on the tail?
The deployment of flaps
What weather phenomenon may occur when rain falls through a temperature inversion
Hail
What is a cold front typically orientated to in the northern hemisphere?
Northeast to southwest manner
Name five different types of thunderstorms
Airmass thunderstorm, single cell, supercell, multicell, squall lines, embedded , Severe
What is low level wind shear, when would you Expereince it?
LLWS: sudden drastic change in wind direction or speed over a small area
Experience: passing frontal systems, thunderstorms, temperature inversions, and strong upper level winds
How do you avoid a tailplane stall if you suspect icing on your tail?
Complete a no flap landing