Originally Posted by
meleagertoo
Since it had been widely known about for many decades before that date it might appear that the 'cognoscenti', ie the Met establishment were somewhat slow on the uptake.
https://en.wikipedia.org/wiki/Jet_stream
Not quite fair: certainly as far as Met Office teaching RAF was concerned, the syllabi were agreed with the customer. I know, because my secondary duty 1981 to 1983 was the lead Met. Liaison and enforcer, working with a Wg Cdr educator at Brampton [I think].