Wall of rain

We were just changing into our work shoes when I went out on the front veranda.  It has been somewhat overcast, but some sun and comfortably warm all morning.  There's a phenomenon here that I had never heard in Oregon.  Off to the east it sounded as tho' a freight train was heading for us.  No wind, just sound.  I'm getting somewhat used to it, but it's still interesting.  It was a wall of rain coming thru the bush right at us.  When it arrived we were hit with an instant downpour and wind.  I looked out at the open area across the drive and could see occasional hail bouncing.  This took about 5 minutes and now it's stopped.  We can hear thunder off in the distance, but only getting the rain dripping from the trees.  We'll wait for a bit to head back outside where I want to chop at a haleconia that is taking over the front and under the house.  Art's doing what he can to try to help and it's wonderful to be able to do things together.