Jhooper - if you follow that advice forever, you will live long and prosper!
A few weeks ago here in Europe, an "experienced" A320 crew found themselves in the middle of a CB
and had their aircraft severely damaged by hail.
They are all lucky to be alive.
I had the fortunate experience in 1980 of getting caught in a not-yet-mature CB
cell in Alberta Canada. The reason it was fortunate is that the precipitation from the cell had not yet started, the aircraft was out of control in vertical up and down drafts but we had enough altitude to cover the excessive vertical movements of the aircraft, and I survived. The pilot of the Navajo at the time said he'd flown through lots of TRW's before. I thought at the time he had just a little time to live if he thought he could keep doing that. He said that was the last time he'd try it.
We each cleaned our respective seats, went off duty and then closed some local establishment thanking the gods we got out of it alive.
That's a 24 year old memory but the lesson learned has been applied by this "old" pilot ever since.
Good replies above. At CYYZ, Toronto, the ground crew have a 5 mile rule. That includes the fuelers. When the CB
's are active, the airport shuts down. At CYYZ sometimes, it's hard to tell if there are CB
's around, or the airport is just continuing as normal!