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.
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.
This region 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.
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.
A group of tornadoes produced by the same storm system withing a day or so is called a tornado outbreak. A series of tornadoes produced in succession by the same supercell is called a tornado family.
Hail and tornadoes are most often associated with cold fronts, but can occur with dry lines or, lest often, warm fronts.
The area of the central US that features many tornadoes is known as Tornado Alley. It is region that typically includes parts of Texas, Oklahoma, Kansas, and Nebraska where atmospheric conditions are conducive for the formation of tornadoes.
If a thunderstorm is capable of producing a tornado in the immediate future or if a tornado has been detected then a tornado warning is issued. If general conditions are favorable for tornadoes but there is not necessarily an immediate threat, then a tornado watch is issued.