Hi Jean.
While camping, my wife and I have been brushed by two tornados ... one in Central Kansas and one in Southeastern Colorado.
Here's a picture of the sky just as the tornado dropped down.
<img src=http://www.fiberglassrv.com/board/uploads/3e8080c5e6569Limon Bow Echo 2.JPG/>
We were watching TV and listening to my storm weather radio at the time, so we had plenty of advance warning to seek shelter in the Brick and Concrete bath house. Luckily the tornado was moving away from us.
In Kansas, however, we were in a campground that didn't fair as well during a brush with a tornado.
A number of people were injured when their trailers flipped. I have some pictures I'll dig out. Unfortunately, the campground and surrounding area was littered with downed trees ... so many that ambulances and rescue crews couldn't get into the campground without first clearing downed trees with chainsaws and back-hoes.
That tornado started as a water spout on a lake near where we were camped with little or no warning.
Probably wasn't the smartest thing, but we rode out that storm in our little
fiberglass egg, which we had, luckily, kept attached to our tow vehicle.
The little trailer, with us inside, rocked terribly, but never felt like it was going to turn over. Unfortunately, several square-sided stick-built rigs were flipped, injuring their occupants.
We always travel with a little weather-alert radio ... which isn't perfect, but still allows you to scan for local weather information and alerts.