As others have mentioned/stated Tornado Areas shouldn't be excessively feared, but keep abreast of weather fronts, have a plan just in case.
We have driven in Tornado Alley a few times & camped in places were tornados & severe thunderstorms have been a possibility. Fearful? Yes. But no harm, thankfully.
Twice in Minot Area in North Dakota, very severe wind coming from WY, but didn't quite made it to us. We pulled over to be in shelter of a large building (on Minot AFB at the time). Severe Thunderstorms with Tornados coming down from Canada, got a lot of rain, but no Tornados, Thankfully. Parked at sons house (with basement).
Overnighting in Eagan, MN Walmart (years ago), very severe thunderstorm with hail came down us, we quickly moved behind the Walmart close to the building to get some shielder from the wind & hail. Very scary & noisy. No hail damage.
On a none planned stop in Clear Lake, Iowa (a year or so after the Eagan hail storm) driving back from Eagan. Extremely angry looking black wavy clouds & a sinister looking sky north of us & the radio telling of tornado warnings in several counties in Iowa. We didn't know what county we were in. Our map didn't show counties.
Went searching for a map without luck, finally stopped at a 7-11 type store & asked. Then found a map in the RV with counties. Very heavy rain but no storm.
Clear Lake AdventureA few years ago, we were in Wichita Falls, TX. Just pulling into the RV Park, we heard of a Tornado & Severe Hail Warning. Very severe hail was on the way to Wichita Falls. The restrooms & the laundry room were where guest were to take refuge.
The RVs were parked (we meet our son & his family as well as our daughter there). So we took our two pickups & my daughters took her car to an abandoned car was not far from the RV Park with my daughter had noticed as she drove in.
We settled into two of the bays & waited for it to come. It come but the hail wasn't as severe as it had been in some of the small down southwest of Wichita Falls. We had came in through there early. When we left later lot of damage had been done. Broken windows in buildings & autos.
A police car came in for shelter while we were waiting for the hail to stop. No damage to our TTs.
Wouldn't have to be an abandoned car wash to find shelter in one. Ha!
Many, many years ago, our summer in the Texas Hill Country & planning on going down to Corpus Christi Area on the Gulf Coast. A hurricane came into or at least very close to the Corpus Area. We had to layover a few days extra days at Pedernales Falls State Park (lot of heavy rain off the hurricane which made it possible to stay longer - cancelations due to rain).
Went on down to Corpus Area (had been some flooding but mostly gone by then) & had a great time.
Advise, don't let fear keep you from enjoying traveling. As I mentioned above, keep abreast of weather fronts & any warnings, have a plan just in case. As others have advised if possible drive around severe weather. If cough on the highway, the rest area restrooms would be one place to seek shelter, I would assume.
Your firefighter/EMT husband should have the training to keep you safe.
:CDesertHawk- Las Cruces, NM USA
*2015 Lance 1985~Casita de Campo~23' 4" Tongue to Bumper, Dinette Slide
160 watt Solar Panel/GoPower! Solar Controller
*2009 White Ford F-150 Reg. Cab
Long Bed with A.R.E. Molded Fiberglass Topper
*Previously~ 2005 16' Scamp