"Longworth" wrote in message
oups.com...
Gary,

Metar/TAF ceiling are always AGL not MSL. This is something that
we can easily forget.

True, but I wasn't forgetting that. All the other altitudes I mentioned were
explicitly AGL too, for consistency with the ceiling measure.

--Gary

Few weeks ago, we were at KLEX early in the
morning when the ceiling was 600'. With the ILS Rwy 4 DH at 1170',
at first I thought the ceiling was below minimum and decided to wait.
After few hours, the ceiling was still at 600' but the cup of coffee
livened up my brain. I then realized that the DH AGL was 200' and the
ceiling was 600' AGL not MSL so it was a go for us.

Hai Longworth