SU8: Aviation Weather Services

Question 1

What is the valid period for the TAF for KMEM?

KMEM 121720Z 1218/1324 20012KT….

Answer 1

1800Z to 2400Z.

(AC 00-45H Chap 5) ( ? )
The valid period of a TAF follows the four-letter location identifier and the six-digit issuance date/time. The valid period group is a two-digit date followed by the two-digit beginning hour and the two-digit ending hour. The valid period of the TAF for KMEM is 1218/1324, which means the forecast is valid from the 12th day at 1800Z until the 13th at 2400Z.

Question 2

What values are used for Winds Aloft Forecasts?

A. True direction and knots.

B. Magnetic direction and knots.

C. Magnetic direction and miles per hour.

Answer 2

A. True direction and knots.

Answer (A) is correct. (AC 00-45H Chap 5) ( ? )
For Winds Aloft Forecasts, wind direction is given in true direction and the wind speed is in knots.

Question 3

When the term “light and variable” is used in reference to a Winds Aloft Forecast, the coded group and windspeed is

Answer 3

9900 and less than 5 knots.