Air France A330-200 missing
Flying over the atlantic in the middle of the night (to be fair the moon is currently 68% full) in the middle of towering CBs is a stressful situation but hardly uncommon. Crashes are hardly ever the result of only one thing gone wrong. The crew might have been trying to navigate around towering CBs or might have decided to fly into one and as a result were probably battling severe turbulence. Now to a very stressful situation add another problem, temporary loss of electrical power (whether caused by lightning strike or another undetermined factor) which would have caused the AP to disconnect, forcing the crew, on top of all the other issues they were having to deal with to manually fly the aircraft. A temporary loss of spacial orientation might have led to a complete loss of control which could have been impossible to recover from. All speculation of course at this stage.