@Ian_Zhang Hatch Nasty and DeMichelle Geniale are spot on in their advice.
I live in a tornado and hurricane prone area, the only thing I can add is…if, the storm/wind is right on top of you (nearby) you will hear a sound, to my ears it sounds like a train, but your interpretation may vary.
Once you hear that sound, you have few seconds, may be a minute, get in a closet, close the door and hold the door shut. You want to be away from anything that could turn into “flying debris”, i.e. glass shards, furniture, books…anything.
Given the changing times, as to weather, in the future look into getting solar powered lanterns/flash lights, paper plates, bowls, and plastic forks, spoons, cups, etc., plus canned foods and dried snacks, and bottled water. It’s about 3 gallons per person per day. And actual physical books and maybe a couple of board games.
I just went through this last autumn, even though I live in what you would probably consider a very small community, we had immediate relief efforts and food stations in two days within a 5 minute walking distance. My community was without power for 3 weeks, so the solar powered lights were essential, as was the food and dinnerware, plus the water.
During a disaster what you discover is…you don’t know it. You have no power, we didn’t have cellphone use as the cell towers were destroyed. There is no news reaching you during a disaster. Yes, you know it is bad, yes you know the power is out, that your phone doesn’t work, but you don’t know how long that will last, or how bad and widespread the destruction is.
My sisters, who live several hours travel far away, could watch the disaster in my community unfold, in real time, on their phones, computers, tvs, while I knew nothing but what was happening to me.
Just know if the worst ever happens, where you are at, your community and fellow citizens will turn out to help.