Left Ririe, ID this morning after getting loaded with about 31k pounds of flour for the trip back to Wisconsin. Took 26 into Jackson WY. Snow and heavy winds. Averaged about 35-40 mph. Road signs advised 40 plus mph winds until approx. 10 miles to Casper WY where the road sign stated 40 mph winds with gusts over 60 mph. 10 miles to Casper and where I was planning on stopping. Pulled into the Roady’s Truck Stop to park. Start to back up and I see my drivers fuel tank panel blowing across the parking lot. I guess it could have been worse and it could have blow off on the highway and hit another vehicle. Still frustrated and now need to find a place to put it.