Chapter 8.8 - Visual Weather Flying Flashcards
Name three main factors affecting Visual Weather?
- Visibility.
- Turbulence.
- Reduced Aircraft Performance.
Name six further factors in affecting Visual Weather?
- Atmospheric Cooling.
- Dew-point Temperature.
- Terrain.
- Season and Time of Day.
- Wind.
- Clouds.
How can Atmospheric Cooling affect Visual Weather?
It can reduce visibility.
How can Dew-point Temperature affect Visual Weather (2)?
- Reduction in Visibility.
- Cloud Formation.
What is the most important information for Pilot’s on Dew-point Temperature?
Difference between dry-bulb and dew-point.
How can Terrain affect Visual Weather?
Terrain generally makes bad weather worse.
True or False. Large areas of water, ocean, lakes and cities should be considered as types of Terrain?
True.
How can Wind affect Visual Weather?
Wind can bring different types of weather whilst flying.
Name two types of clouds?
- Cumuliform.
- Stratiform.
Name three associations with Cumuliform Clouds?
- Unstable Conditions.
- Turbulence.
- Heavy Rain.
Name three associations with Stratiform Clouds?
- Stable Conditions.
- Fog.
- Poor Visibility.
Anticyclone/Ridge Weather: Wind Direction?
Anticlockwise.
Anticyclone/Ridge Weather: Moisture Level (2)?
- Dry in Upper Layers.
- Moist below Inversion.
Anticyclone/Ridge Weather: Type of Cloud?
Stratiform.
Anticyclone/Ridge Weather: Clear Skies?
Often.
Anticyclone/Ridge Weather: Turbulence (2)?
- Smooth Air above Inversion.
- Slight to Moderate below Inversion.
Anticyclone/Ridge Weather: Visibility?
Poor.
Depression/Trough Weather: Wind Direction?
Clockwise.
Depression/Trough Weather: Moisture Level?
Moist if over water and wet surface.
Depression/Trough Weather: Type of Cloud?
Cumuliform.
Depression/Trough Weather: Clear Skies?
Rarely.
Depression/Trough Weather: Turbulence?
Slight to Moderate depending on stability.
Depression/Trough Weather: Visibility?
Good except in precipitation.
Tropical Cyclone Weather: Wind Direction?
Clockwise.
Tropical Cyclone Weather: Moisture Level?
Very Moist.
Tropical Cyclone Weather: Type of Cloud?
Mainly Cumuliform.
Tropical Cyclone Weather: Clear Skies?
Only in the Eye of the storm.
Tropical Cyclone Weather: Turbulence?
Moderate to Extreme.
Tropical Cyclone Weather: Visibility (2)?
- Poor in Rain.
- Low Visibility.
Cols Weather: Wind Direction?
Light and Variable.
Cols Weather: Moisture Level?
Moist in lower levels.
Cols Weather: Type of Cloud?
Cumuliform or Stratiform.
Cols Weather: Clear Skies?
Often.
Cols Weather: Turbulence?
Smooth/Turbulent depending on weather conditions.
Cols Weather: Visibility?
Can be poor in lower levels.
Stability: Conditions Favourable for Development?
Anticyclones.
Stability: Signs That May Indicate Presence?
Light Winds.
Instability: Conditions Favourable for Development?
Depression/Cyclones.
Instability: Signs That May Indicate Presence?
Strong Winds.
Instability: Effects on Flight Characteristics?
Light to Moderate Turbulence.
Instability: Pilot Actions Required to Minimise Effect?
Turbulence Penetration Speed if Turbulence reaches Moderate.
Fog: Conditions Favourable for Development (2)?
- High Relative Humidity.
- Air cooled to below Dew-point.
Fog: Effects on Flight Characteristics?
Visibility reduced to 1000m or less.
Fog: Pilot Actions Required to Minimise Effect?
Avoid early morning flights.
Towering Cumulus: Conditions Favourable for Development?
Moist Air.
Towering Cumulus: Effects on Flight Characteristics?
Moderate to Severe Turbulence.
Towering Cumulus: Pilot Actions Required to Minimise Effect?
Avoid entering due to Turbulence and possible growth into Thunderstorms.
Thunderstorms: Conditions Favourable for Development?
Very Moist Air.
Thunderstorms: Effects on Flight Characteristics?
Severe to Extreme Turbulence.
Thunderstorms: Pilot Actions Required to Minimise Effect?
Avoid at all costs.
