Weather Flashcards
AWOS?
Automated Weather Observation System
ASOS?
Automated Surface Observing System
What do you need to look for in regards to the weather?
Winds, visibility, sky conditions, temperature, dew point, altimeter
Winds
Nautical miles
1 Knot = 1 NM / hr
Visibility
Statue miles
1 SM = 5280 ft
Sky conditions
Clouds AGL
- overcast, broken, clear, scattered, few
Temp & Dew Point
Higher temp = lower a/c performance
The closer the temperature and dew point numbers are, higher possibility of rain, fog, low visibility
Altimeter
Standard = 29.92
Current atmospheric pressure
What are the two types of weather conditions
VFR: Visual references, visual flight rules
- VMC: visual meteorological conditions for VFR
- cloud ceiling has to be greater than 3000 ft AGL
- visibility has to be greater than 5 SM
- winds can’t be more than 15 knots
IFR: cockpit instruments, instrument flight rules