Fri Jun 26, 2020 11:57 pm
#1779496
I've noticed a number of danger areas have OCNL mentioned. e.g. Lyme Bay off the Dorset coast is shown as D012/18.0 OCNL/25.0. Does anyone know what OCNL stands for? My first thought would be occasional, but that doesn't quite make sense to me; a lower limit of 18,000ft AMSL occasionally up to 25,000ft AMSL? So what is it the rest of the time then? Anyway, I'm a bit stuck on that one if anyone knows