CPL Meteorology · Practice

In an Australian TAF, the qualifiers INTER and TEMPO indicate different durations for variations from the prevailing forecast. Which option correctly describes them?

• A.INTER and TEMPO are completely interchangeable terms
• B.INTER means each occurrence lasts 60 minutes or longer; TEMPO means each individual occurrence lasts less than 30 minutes and total duration never exceeds half the forecast period
• C.INTER means frequent intermittent fluctuations, each lasting less than 30 minutes; TEMPO means temporary variations, each lasting 30 minutes to less than 60 minutes
• D.INTER indicates 30% probability of the described condition; TEMPO indicates 40% probability