Reading a SNOWTAM

[aviationluver]

Does anyone have a SNOWTAM decoder?

I was asked a question about a SNOWTAM in Svalbard, Norway and I didn't have the answer.

From what I remember the "F" category read "F) 7/7/7"
I thought braking action went from 1 to 5.

The Snowtam said taxiways were iced over.

Thanks.

They wanted to know what the braking action would be based on the SNOWTAM.

[TCAS FAN]

Following is an extract from ICAO Annex 15 which sets out the coding used in a SNOWTAM in Section F. This describes the type of deposits. Section H describes braking action. If you would like to PM me I will send you a copy of the SNOWTAM format.

(DEPOSITS OVER TOTAL RUNWAY LENGTH (Observed on each third of the runway, starting from threshold having the lower runway designation number)
NIL — CLEAR AND DRY
1 — DAMP
2 — WET
3 — RIME OR FROST COVERED (depth normally less than 1 mm)
4 — DRY SNOW
5 — WET SNOW
6 — SLUSH
7 — ICE
8 — COMPACTED OR ROLLED SNOW
9 — FROZEN RUTS OR RIDGES

[Feather44]

Snowtam Decoder (metar & notam) (http://etaks.free.fr/pdf/SNOWTAM_DECODER-metar-and-notam.pdf)