Surely the gust front(s), along with the WS and up/down draughts associated with active CB(s) would be enough to put a shiver down the spine of a pilot, regardless of if they are flying a Cessna or B747...
Surely it would be better to stick it out in the hold until the wx passes, or go to an alternate? Better to get the pax onto terra firma 150nm away than to put the pax 6ft under terra firma...
... then again maybe I'm just a muppet and should wait until I have enough stripes on my shoulder to know what its like flying a 747...