MJ
The worst turbulence i had was not in a CB but in a Citation on a trip to Nice!
Starting a descent ATC warned of reported severe turbulence between FL200 and FL300.
I warned the PAX to belt up tightly and to expect turbulence. I reduced speed in the descent popping out the air brakes.
NOTHING !! As smooth as a babies bottom all the way to touchdown at Nice!
The PAX looked at me as if I was some sort of idiot!
We turned around and the co pilot and I took off empty back to the uk!
We took the northerly SID out of Nice and passing FL200 in the climb all hell let loose 45 degree wing drops the jet almost uncontrollable.
I urgently called for an immediate climb to FL320
Normally at 20 to 30000 feet the Citation climbs at 1000 fpm less nearer 30 K
The VSI indicated 3000 fpm all the way up cupboards flying open items hurling around the cabin !!! Then dead smooth and not a sign of a CB
Pace