In order for a tent to survive a storm, within reason, it should be staked out properly. There was a lot of wind already in Gilette prior to the infamous storm.
A leaky fly can't be helped, but a few tents blew over because their owners didn't stake them out the way they should have.....
A few tips;
Reading the owners manual and practicing pitching a new tent in your backyard prior to a campingtrip will help.
Ditch the usually cheap stakes that come with most tents and replace them with more sturdy ones. If your tent doesn't come with enough line for all the tie down points, just add them with good quality line ( no stretch stuff) that is reflective too, for night time visibility.
Buy the proper groundcloth that is designed for your model tent. It will keep water from seeping through the tent floor and keep your tent and sleeping gear dry..
Just 0.02 cts...