Weather Flashcards
Which type of front is normally associated with convective activity, storms, rain, and poor weather?
Cold Front
Which type of front is normally associated with stratus, fog, and CBs in summer as it approaches?
Warm Front
Where would you be most likely to experience heavy rain in the vicinity of an occluded front?
Before the frontal passage
What conditions are most conducive to airframe ice formation?
Visible moisture and temperature less than 10 degrees C.
If your aircraft is certified for flight into known icing conditions and all systems are operating normally, you do not need to be concerned about inflight icing on approach and landing.
False, you should never fly into known or forecast severe icing conditions.
No aircraft are currently certified for flight into what?
Freezing rain or freezing drizzle
You are scheduled to land at an airport that is 100 NM ahead of a warm front. Are hazardous icing conditions likely to be present?
Yes - hazardous icing conditions can be present 200 NM in front of a warm front.
What visual weather conditions are more likely to indicate ice?
Clouds with well defined edges
What website may give information on current icing SIGMETs, Icing Reports, Forecast Icing, and Freezing Levels?
NOAA’s Aviation Weather Center
The Flight Path Tool allows you to ___________________.
add departure and destination airports to create a map along your route of flight
What are key conditions that can cause radiation fog?
- Calm/Light winds
- Relatively high humidity
- Rapid cooling
When is mountain/valley fog most common?
Observed in the autumn or spring during sunset or sunrise.
What type of fog is associated with “cold air drainage”?
Mountain/Valley Fog
What type of fog is usually associated with evaporating precipitation?
Frontal fog
The main difference between Stratus, Altostratus, and Cirrostratus clouds is ______________________.
Altitude of the clouds
What type of clouds in the morning may precede afternoon thunderstorms?
Altocumulus
What type of cloud generally presents the greatest hazards to flight?
Cumulonimbus
What are the three main ingredients required for thunderstorm development?
Instability, moisture, and a lifting mechanism
What is the most hazardous stage in the life cycle of the thunderstorm?
The mature stage
If a rotating cloud does not reach the surface, then it is what?
A funnel cloud
If a rotating cloud does reach the surface, then it is what?
A tornado
Gust fronts often move ahead of associated precipitation. These gust fronts can cause windshear that is hazardous to aircraft arriving and departing. Up to how far out in front of a thunderstorm could you encounter a gust front?
15 miles
At what temperatures could you expect the most severe accumulation of clear icing associated with a thunderstorm?
Between 0 and -15C
