Place: Philadelphia, PA
Year: 1776
Event: Thomas Jefferson paid for his first thermometer and signed the Declaration of Independence; weather at 1400 hours was cloudy, temperature 76 degrees, wind from the southwest.

Place: Las Vegas, NV
Year: 1975
Event: Flash flooding stranded more than 100 motorists on the strip. Cars were swept from casino parking lots, killing 2 persons and creating $1 million worth of damage. In spite of the flooding most casinos remained open and one owner exclaimed: "We'll have to have floating crap games before we interrupt any of the gamblers!"