Having gone through extremely high winds, some in the area reported 60mph at the Alvord Desert in Oregon I'd say get some help and move your RV next to a building at the least. Call the police non-emergency number and see if they have suggestions.
The storm came up on us with no warning had no time to position our coach, but we pulled slides in and thankfully we'd been setup in a U formation with 2 other RVs and we knew at the worst we'd be pushed against them and no like we'd tip over. Scared the daylights out of me as we waited the storm out in the dark over night. Next morning we broke camp, heard that a church in the area lost it's entire roof. I never want to go through that again.