We spent an extra 20 minutes on the tarmac at O'Hare last week whilst they replotted around a major thunderstorm over Canada. My recollection of bad turbulence

We spent an extra 20 minutes on the tarmac at O'Hare last week whilst they replotted around a major thunderstorm over Canada. My recollection of bad turbulence is that same as yours - a flight to Seattle in '98 was the last time I can remember bad turbulence.