Irv, I remember it so well that I checked the outside air temperature while I was flying: 18C on the ground, 12C at 3000ft. Almost ISA
and the air was completely still - so presumably that was the steepest lapse rate of the day. According to Form 214 the lapse rate yesterday (Monday) was similar but the visibility was far worse. Never going to understand this Met business
Of course, G-LD may just be reporting a completely fictional OAT
