This past Saturday afternoon (while my parents were visiting from Indiana, no less!), I live-tweeted our tornado-warning adventure (see here, here, here, and here). The storm was really fast-moving, and came and went in about 30 minutes.
At the time, we were aware of a confirmed tornado about 8 miles from our house, at/near the West County mall in Des Peres. However, it has now been confirmed that the storm spun off a second tornado - one whose path came within about 1/3 of a mile from our house!
Below is the damage-path of the Saint Ann tornado:
Saint Ann Tornado 24 April 2010
Fortunately, it appears that the tornado was dying out by the time it was nearest to us - but someone tell my Dad that next time, he should stay in the basement instead of going outside to see the storm!