Page 362 - PPL-engelsk 2025

Meteorology

The TAF code is structured like the METAR code, but only wind, MET visibility,

weather and clouds, as well as changes to these are included. That is, there is

no QNH or temperature.

Ex:

ekka 250840z 250918 16005kt 2500 br bkn006 becmg 0910 16012kt 9999 nsw sct025 tempo 1011
6000 bkn008

NSW, NSC, CAVOK, BECMG, TEMPO and FM are according to the same criteria

as for METAR and TREND.

In TAF, a designation called PROB is used followed by either 30 or 40. These

numbers indicate the percentage probability of an alternative value of a

predicted element.

If the values in a TAF turn out not to be valid, a TAF AMD is issued, which is a
corrected TAF or a TAF COR, which is a TAF with corrections.

3.11.5.9 SNOWTAM

You may have come across the term NOTAM elsewhere in this compendium.

NOTAM is a general term for all aviation-related announcements that can cover

both safety and operational matters.

SNOWTAM (Snow and Ice Report) is a specific type of NOTAM that focuses on
informing about snow, ice and winter conditions that may affect flight safety at

or near airports.

SNOWTAM reports contain information about:

- The amount of snow or ice on runways and taxiways

- Conditions such as sleet, freezing rain, or snowplow work

- Weather conditions that may affect flight safety, such as slippery

runways or limited visibility due to snow or fog

- Information about areas of the airport that may be obstructed by winter

conditions

Flight Theory PPL(A)(UL)/LAPL Henning Andersen, Midtjysk Flyveskole© 2025 362