Travelling these days with a smartphone & access to all kinds of weather apps there should be no big problem in avoiding storms if you are on the road. The storm is not going to change its course to avoid you so best to determine where it is & which way it is going & change your route accordingly.
A few years ago we were eastbound on a highway & found a nasty thunderstorm on the same track behind us. No way to outrun it so best action was to sidestep it. We got off at the next decent sized exit & drove north about 20 miles, found a big empty carpark with room to reposition to face the wind if necessary & waited.
Watched the storm roar by to the south of us headed east then went back the 20 miles & continued on our way east following the storm this time.
If you are standing on train tracks & see a train coming, step aside.
Not much you can do about the situation if you find yourself in a CG with a storm approaching. Collect all of your valuable papers etc. & some food & drink supplies in a ditch bag & be prepared to abandon the trailer for a predetermined safer place in the CG.
Boat: 32' 1996 Albin 32+2, single Cummins 315hp
40+ night per year overnighter
2007 Alpenlite 34RLR
2006 Chevy 3500 LT, CC,LB 6.6L Diesel
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