Meteorology 1

• ATIS is a

• continuous broadcast of recorded information for arriving and departing aircraft.

• You must listen to the ATIS (if available) before

• contacting tower for take—off and before entering the control zone when landing.

CAVOK

• No cloud below 5000 feet and no cumulonimbus clouds

• Visibility is 65M or more

• No precipitation, thunderstorms, shallow fog, or low drifting snow

weather reports

• METAR

• AWOS

• PIREP

• AIRMET

• SIGMET

METARS

• Coded weather observations taken by a qualified person every hour on the hour of the actual weather observed on the ground.

• SPECI

• is used when significant changes in weather conditions occur off the hour.