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“At least 10 people were injured, but not much other information has been released, except that there was a computer problem. article saying that it could have been a rare atmospheric (aka undular) bore that caused turbulence severe enough that it impacted the computers (or more likely just knocked out the autopilot).”
“The waves of undular bores typically measure 5 miles from peak to peak and race across the sky at 10 to 50 mph.”
“These so-called undular bores are created by atmospheric conditions that destabilize the air in a particular way.”
“A video view from Des Moines, Iowa, shows undular bore waves moving through the sky.”
“Besides, this is a rare, but well-documented atmospheric event called an "undular bore wave.”
“Tim explains the undular bore phenomenon very well.”
“So I was really interested to see that a recent Air Canada flight that hit turbulence may have encountered an undular bore.”
“Remember that potential "undular bore" that the Air Canada plane may have hit?”
“On October 3, 2007, a webcam caught an amazing view of one of these undular bores.”
“Video of undular bore found, see what Air Canada 190 felt - Turbulence Forecast Blog”
Looking for tweets for undular.