Reading a SNOWTAM
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Joined: Nov 2007
Posts: 122
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From: NYC
Reading a SNOWTAM
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.
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.
Joined: Apr 2005
Posts: 1,651
Likes: 138
From: 50+ north
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
(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
Joined: Feb 2015
Posts: 103
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From: Middle East
