For right now, it looks like McDonald Observatory is not in danger from the Hughes Ranch Wildfire that is burning in west Texas, although some other historic structures and houses in the area unrelated to the observatory are threatened. However, if the wind changes direction and picks up (neither of which is expected), things could get hairy very fast.
The fire was started by a nearby railroad line, though explanations differ. One group claims a passing train wheel sparked into the high, dry grass, while another group claims it was a spark from a welding torch during track repairs. The initial fire threatened the railway crew, thankfully nobody was hurt.