The worst IMO is ice storms. We've had a few over the last several years. We're already not equipped to deal with snow, and when it becomes ice, it's impossible to get anywhere.
During the last one, I watched a video of a woman standing with a hammer next to a car covered in snow. She said, "if you're wondering why we're all freaking out about a couple inches of snow," then she hit the snow on the car with the hammer, and it just went THUNK.
It wasn't a big deal for me personally, because I work from home and was stocked up on everything I needed, but it did suck to not be able to go anywhere for a week (it took sooo long to melt because it barely got above freezing during the day then would just freeze again at night). But it knocked out power for a lot of people for over a week, and many people had trees fall on their homes. Plus if you have any kind of emergency, you're basically fucked.
We also occasionally get floods, but I'm not personally in an area that is affected. We also get wind storms pretty frequently, which knocks down fences and tree limbs and whatnot, which often takes out power. It's not as bad because the roads are passable, so the outages get fixed promptly. They also usually happen in spring, so you won't freeze to death if you don't have power for a day. It's mostly just unnerving to have tree limbs fall so much. My neighbor used to have a tree that would drop branches with a diameter of 2-3 inches in my yard every wind storm, I hated it.
We occasionally get tornadoes, but they're short lived, and I've never heard of them causing any damage or injuries.
The real bad disaster could happen at any time: an earthquake. People joke about California falling into the ocean, but their infrastructure is built to withstand the earthquakes their fault can generate. The fault here generates stronger but less frequent earthquakes. An expert said when it happens, "everything west of I-5 will be toast". They estimate there's a 50% chance of it happening in my lifetime.
