May 12 in San Antonio history…
Possibility of a tornado in the San Antonio area was forecast by the U.S. Weather Bureau. Hail and winds reaching up to 50 or 60 miles per hour were also listed as possibilities. (This was the same storm system that spawned an F5 tornado destroying downtown Waco the previous day.)
The $100,000, 3.2 mile “Brackenridge Eagle” railroad track began carrying its first passengers.