COMPLETE QUESTIONS AND ANSWERS 100%
CORRECT
◉ What causes weather. Answer: Uneven heating of the earth's surface
◉ Coriolis effect. Answer: Air does not move in straight line
◉ What are the types of weather briefings. Answer: Standard:
comprehensive within 6 hours of flight; current conditions, en route
forecasts, destination forecast
Abbreviated: update previous briefing; 1-2 items
Outlook: 6 or more hours for planning purposes
◉ PIREPs. Answer: Pilot report: conditions as they exist in the air;
confirm height bases, tops of clouds, locations of wind shear, turbulence,
and inflight icing
◉ TAFs. Answer: Terminal aerodrome forecast: winds, visibility,
significant weather in vicinity, clouds
Valid 24 hours
, Issued 4 times every 6 hours
◉ SPECI. Answer: Special weather report updating METAR for
significant changes
◉ Convective outlook. Answer: Forecast for thunderstorms
◉ SIGMET. Answer: Severe weather advisory to all aircraft
Unscheduled valid for 4 hours
Severe icing, extreme turbulence, dust storms, volcanic ash
◉ Convective SIGMET. Answer: Severe turbulence, severe icing, low-
level wind shear, thunderstorms
Valid for 2 hours
◉ AIRMET. Answer: Weather advisory for potential weather
Conditions lower than SIGMETs
Every 6 hours
Pertinent for general aviation
Sierra: IFR conditions or mountain obscuration
Tango: moderate turbulence, surface winds 30 knots or more, non
convective wind shear
Zulu: moderate icing and freezing