Lisa went and looked, and even as she went to look, I could see from the bright flashes that what was doing on was a sudden and relatively severe thunderstorm rolling into Fernley. A check of Twitter showed me that the National Weather Service had issued a notice and the radar maps showed red intensity in the area, with small hail and large rain. In fact, the storm did not last long, but it dropped 1-2 cm of rain in less than 20 minutes. (Fernley only gets about 20 cm of rain per year, so that's 10% of our annual rainfall in less than an hour.) We took no harm at Fernley House (which makes Lisa happy that she's over-engineered things like the roof over the travel trailer), but not everyone was quite so lucky.
Today, when we went to the grocery store, we found that much of this tree (under which we've parked in the past) had gone down in the storm and had not been yet been cleaned up. Fortunately, it doesn't appear that there was actually a vehicle in the tree's way when it fell.
There doesn't seem to have been much other damage in the area that we could see, but Fernley is a fair-sized city in land area and we didn't go looking for more trouble, as we have our own business to take care of, as we prepped the Rolling Stone for my trip to the Bay Area this week and also as I tried to take care of Westercon and Worldcon business.