FAA Ground School Practice Test

When "light and variable" is used in a forecast, what does the coded group and windspeed indicate?

1. 9900 and less than 10 knots

2. 0000 and less than 5 knots

3. 9900 and greater than 5 knots

4. 0000 and exactly 10 knots

The correct answer is: 9900 and less than 10 knots

When a weather forecast includes the term "light and variable," it typically refers to wind conditions that are calm, with little to no consistent direction. In coded weather reports, the group "9900" is used to indicate that the wind is light and variable, and "less than 10 knots" denotes that the wind speed is not strong, aligning with the description of light and variable conditions. This indicates a very gentle breeze or often no significant wind at all. Understanding coded weather reports is essential for pilots, as it helps them assess current and forecasted weather conditions, which are critical for safe flying. The other options do not accurately reflect the conditions implied by "light and variable," either by indicating incorrect wind directions or speeds that do not match the lightness and variability described.