Another name for this film is called a "F6 Twister".
Casper Van Dien later starred in two more tornado disasters: 500 MPH Storm (2013) and Fire Twister (2015).
Nearly halfway through, a tornado lifts a train off the tracks. The tornado lifts the freight cars, while the locomotive is only airborne for a few seconds before being dropped. It has been confirmed in real-life that tornadoes can lift trains off their tracks and - in some cases - throw the freight cars a good distance from the tracks like the 1968 Tracy tornado and 2011 Tuscaloosa-Birmingham tornado.
Casper Van Dien and Victoria Pratt both share the same birthday, December 18th. Van Dien was born in 1968 and Pratt was born in 1970.
On screen title has "Christams Twister" instead of Christmas Twister.