If an announcement indicates a general possibility of tornadoes, but not that there is an imminent danger, then it is called a tornado watch. If there is an imminent threat of a tornado, then a tornado warning is issued.
This is called a tornado watch.
The area that gets the most tornadoes in the U.S. (or in the world for that matter) is called Tornado Alley.
The storms that you are asking about are called tornadoes.
Most of the world's tornadoes happen in an area called "Tornado Alley". It is between the Rocky Mountains and Appalachian Mountains. It's a huge area.
Cold fronts are most often associated with the severe storms that produce hail and tornadoes.
The region of the U.S. most prone to tornadoes is called "Tornado Alley."
It is possible. Keep in mind, however, that records of weak tornadoes that occurred before the late twentieth century are inconsistent an unreliable. Many tornadoes that probably occurred were never documented. Calgary is in an area where tornadoes are rare, though, so it is possible than none have struck the city since it was built.
This region is called Tornado Alley.
Tornadoes, hail and other forms of severe weather most often form ahead of cold fronts.
Yes. Tornadoes have occurred in all 50 U.S. states. Florida has one of the highest rares of tornadoes, and some of the worst U.S. tornadoes have impacted Missouri, Illinois, and Mississippi.
The land in the central United States is the best breeding ground for the storms which produce tornadoes. . . Most tornadoes in the United States form in an area called "Tornado Alley". This area includes parts of Texas, Oklahoma, Kansas, and Nebraska.
Hail and tornadoes are most often associated with cold fronts, but can occur with dry lines or, lest often, warm fronts.