© 2020 AccuWeather, Inc. "AccuWeather" and sun design are registered trademarks of AccuWeather, Inc. All Rights Reserved. In this area, known as Tornado Alley, storms are caused when dry cold air moving south from Canada meets warm moist air traveling north from the Gulf of Mexico. Many people complain of aches and pains as the temperatures drop and cold weather sets in. On average, around 1,200 tornadoes are reported in the U.S. every year, more than any country in the world. By May, still very cold and dry air is now mixing with even warmer air over the vast flat landscapes of the Plains, allowing for some of the biggest and most frequent storms of the year. Among its provinces, Saskatchewan has the highest number of tornadoes (18) followed by Alberta and Ontario at 15 and 12 per year respectively. Will 5G Impact Our Cell Phone Plans (or Our Health?! Another reason is that America is a huge country, and it's natural that the more land you have, the more natural disasters are going to come your way. -  Designed by The whirling column of debris also contributes to the roaring sound associated with large tornadoes. Enough moisture must also be available for a tornado to form. Most tornadoes occur when cold dry air from Canada collides with warm, moist air from the Gulf of Mexico. These tornadoes topple skyscrapers, toss trucks into the air and present extreme threats to ground-based life. Tornadoes can form at any time of year, but most occur in the spring and summer months along with … The U.S. has more tornadoes a year than any other country and approximately 60 related deaths on average per year. However, lately, the number of tornadoes has been increasing gradually. Are Mobile Homes Safe in A Hurricane? The west coast of Taranaki is another hotspot for tornadoes as it had been struck 12 times from 1961-1975. Even New Zealand reports about 20 tornadoes each year. "Bangladesh is another area that can get violent tornadoes, and there's a large, lower-grade threat in a large area of Europe from northern France through into Russia," Brooks said. After the contiguous United States and Canada, the areas that experience the most tornadoes are central Asia, South America, South Africa, Australia, New Zealand and Europe. Here are some tips that could keep you safe during twisters. Reading and London endure the majority of the twisters as the River Thames is London’s own tornado valley. According to Andrews, most Southern Hemisphere tornadoes spin clockwise, whereas they normally spin counter-clockwise on the northern side of the equator. It's rare for tropical systems to help trigger winter weather -- but not unprecedented.

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