What does the contraction VRB in the Terminal Aerodrome Forecast (TAF) mean?
SIGMETs are issued as a warning of weather conditions which are hazardous
A pilot reporting turbulence that momentarily causes slight, erratic changes in altitude and/or attitude should report it as
Dashed lines on a Surface Analysis Chart, if depicted, indicate that the pressure gradient is
The difference found by subtracting the temperature of a parcel of air theoretically lifted from the surface to 500 millibars and the existing temperature at 500 millibars is called the
What wind conditions would you anticipate when squalls are reported at your destination?
Turbulence that is encountered above 15,000 feet AGL not associated with cumuliform cloudiness, including thunderstorms, should be reported as
The US High Level Significant Weather Prognostic Chart forecasts significant weather for what airspace?
From which of the following can the observed temperature, wind, and temperature/dewpoint spread be determined at a specified altitude?
Hatching on a Constant Pressure Analysis Chart indicates