weather Flashcards
What kind of fog might you expect from on a clear cool night with little or no wind?
Radiation fog
What type of fog might you expect a form in winds up to 15 kn?
Advection fog
What type of fog might you expected form in conjunction with warm rain falling through cool air?
Precipitation induced fog
In general what conditions are necessary for structural ice to form?
The aircraft must fly through visible water/rain or clouds, and the temperature at the point of the moisture impacting the aircraft must be 0°C or less.
What kind of ice would you expect to find in the lower level stratus clouds containing small droplets of water?
Rime ice
What kind of ice would you expect with temperatures of 0° to -15° with large water droplets or freezing rain?
Clear ice
What are the stages of a thunderstorm?
Cumulus stage-updrafts; mature stage, rain begins to fall, up-and-down draft; dissipating stage, downdrafts when the rain has ended and the downdraft have abated the thunderstorm has ended.
Which stage of a thunderstorm is considered the most dangerous?
Mature stage
What would be a visual indication of thunderstorm has reached the mature stage
When rain begins to fall.
In general, what kind of weather would you expect after passage of a cold front which displaced unstable moist air?
Good visibility, outside showers, cumulus clouds.
In general, what kind of weather would you expect after passage of a warm front that has overrun moist, stable air?
Continuous precipitation and widespread Stratus in the cold air
What generally is considered to be a safe distance for thunderstorm avoidance?
At least 20 miles
In general what conditions are necessary for fog to form?
Add moisture or cool the air to it saturation point/dewpoint
