Travelling E to W thru N AL, MS, AR, OK & TX in April/May

I've lived in Oklahoma since 1945. Here are a few things I think might help you during the stormy time of the year. There are a few good Iphone weather apps. One is WeatherBug. You can mark many different locations and check that location during the day. It also has fairly good radar capability. Check the radar frequently, it will show you when you are about to run into storms. One that I use is "Mesonet". This app is put out by the National Severe Storm Lab, located in Norman, Oklahoma. They know what they are doing. You can pick what city in Oklahoma you want to know about and it has radar also. It also list any storm or tornado warnings. We camp a lot and use State Parks that have stone or concrete restrooms. If the weather gets bad, get out of the RV!! We have spent parts, of several nights in the concrete shelters. Usually you will have storms start in Oklahoma in the early to late afternoon. They usually end by 10-12pm. It seems that Arkansas gets most of there storms later in the day and thru the night. Those are the most dangerous to me. If it's during the day, you can be aware and take cover. If you're asleep, its a different story. Weather forecasting has improved a lot over the years and usually the weather forecast start warning everyone about the possibility of tornadoes several days in advance. There are are several weather radios that are also set to your location. Hope this helps, if you have any questions, just ask.