Delicate arch hike, Moab Utah, dead horse point, arches national park, flooding, what to expect

trip to southern Utah. Moab. Pet friendly trip. There was a flash flood warning on our way home, black cloud all around us. Highway 6 ended up being washed away right before we got there. This is the second time we have encountered flooding when in southern Utah. Last year a similar experience going to St. George, the freeway flooded for several hours.