[bongodriver]

I'll tell you what is moronic, some guy claiming to be a professional pilot, who said airfield elevations change hourly and the information is taken from METAR's, a QNH is 'not' airfield elevation it is sea level pressure at that station, pilots do 'not' set QNH by adjusting their altimeters to airfield elevation, QNH is given to the pilot either by radio or by means of a pre briefing METAR, all of this has nothing to do with tides, tides are for sailors to worry about, in aviation sea level is a fixed average called 'mean sea level'.
It really isn't much of a surprise doggles is taking Crumpps side of this, it doen't help the LW fantasists much to learn one of their biggest contributors is a complete liar.