Just wondering if a tornado could account for death of the hikers? If they heard one approaching the obvious choice would be to immediately seek shelter in the ravine. No time to gather or put on clothing.
However there is one fly in the oatmeal to this theory.....
According to the autopsy report Dyatlov appeared to have circular injuries around his ankles as if he had been bound or tied. If this happened then we can safely dismiss the severe weather theory. The evidence would then point to outside attackers. Or???? Did Dyatlovs fellow hikers bind him for some reason? It is interesting & curious to note that Igor Dyatlov suffered far less physical injuries than the majority of his fellow hikers.
A tornado is one of my 3 pet potential explanations for what happened, the other two being one of the hikers going rogue, and parachute bombs being dropped by the military to initiate avalanches/dislodge ice ahead of planned manouevres.
A tornado at altitude isn't as powerful or as long-lasting as one on the US plains, and they occur all over the northern hemisphere, but it could still easily injure or kill hikers if directly in its path, and would be particularly frightening at night where you might not be able to anticipate its direction of travel. Being thrown around or bowled over on a mountain slope will certainly produce some serious injuries, and there's plenty of rocks there, some jutting out of the snow, as shown in photo's of the site taken in summer. I also wonder if that's how one of the ski poles came to snap. It may also have lightning included which would frighten them even further in such an exposed place.
There doesn't seem to be much record online of injuries due to tornadoes on mountains, which are rarer events, but it seems studies of US lowland tornadoes mainly cause upper body injuries, head injuries and scratches from flying debris, and that generally describes the injuries the hikers all sustained. They also don't seem to have injuries to the back of their bodies or limbs, and someone would normally face into the wind, to face the danger and lean into it. Some of the hikers, eg Dyatlov's arm, have numerous scratches, and I could imagine him raising his arm to protect his eyes in such high winds.
By contrast an avalanche, the official finding, most often includes broken limbs and dislocations, though more so if skis and snowboards are attached which anchor in the avalanche. Crushing can occur if buried in deep snow, and of course suffocation, but that doesn't apply here.
It doesn't follow that the tent would be destroyed, if it didn't take a direct hit, and the weighty contents are semi-submerged in a trench cut into the snow, and behind a snow wall. The numerous slashings on the tent could even be interpreted not only as a means of rapid escape but also an emergency measure to stop it blowing away, it works to decompress that space, and it could be stitched up when the danger had passed. It's already two tents stitched together and they constantly had to repair it. There's mention of some tree tops being damaged, or 'burnt', which might be attributed to a tornado, such as the shedding of cedar needles or damage to the growing tip. A tornado on a mountain would cover the crime scene with resettled snow, leaving little clue it was ever there.
As regards Dyatlov's ankles, I think that most likely caused by him climbing trees at the cedars, and doing so without shoes, to obtain firewood. The back of his ankles press against the tree trunk, the front cross over each other tightly to adjust grip. Do that repeatedly and sores will develop.