Saw a number of these "little tornadoes" on the way to the races, near Lost Hills, California.
I always wondered what happened to those "lost" hills, now I see that they probably just blew away.
8^)
I'm sorry to hear about the loss of your hills. By now, these dust devils have probably carried them to Arizona or New Mexico, well on their way to Texas. If and when they ever get to east Texas, they will be very welcome as they have a dearth of hills there.