Are Planes taking off in Thunderstorms normal?

On May 6, 7:42 pm, "Morgans" wrote:
"Bob Moore" wrote
Jim, it's about time that someone told you that Mxsmanic seems
to understand a hell-of-a-lot more about what really happens in
jet transport aircraft than you do. You are just looking the fool
in your attempts to rebut his posts.

[...]
I hope you know that your credibility just dropped (with your support of
this individual) with a lot of people, I'm sure. It does not show very good
judgment, at the very least.

With 17 years as a 707 pilot, amongst other credits,it does not show
good judgement on your part to try to cast doubts on his credibility,
which has always been good.

Kev