Severe Weather in Japan

 A tornadoes are formed by having a rotating body of air (which is a called a vertical sheer) at the ground. Then the horizontal rotating air lifted off the floor from the updraft of the thunderstorm. After, the Mesocyclone is finally developed form the updraft of the thunderstorm. A mesocyclone is a vertical cylinder of rotating air, which is normally 3 to 10 kilometers. In United States the direction the tornadoes usually travels west to east. This is the dominant direction in the United states because the Westerlies blows the Thunderstorm clouds west to east. Tornadoes do happen in Japan, usually spring time. The average number of tornadoes observed in the United States per year is 1253. Website: http://www.ncdc.noaa.gov/climate-information/extreme-events/us-tornado-climatology . The average number of tornadoes observed in Japan per year is 20. Website:  http://www.islandnet. com/~see/weather/almanac/arc2007/alm07jun.htm .

http://www.windows2universe.org/earth/images/tornado_agri_map.jpg

Tornadoes are increasing more and more through out the years. The reason for that must be that, the Earth is getting hotter and hotter, maybe because of c=global warming. Which could be causing the air to get hotter. So more vertical wind sheer are made, the thunderstorm's updraft to make the tornadoes.


The three main requirements for hurricane formations are warm ocean temperatures (anything greater than 80 degrees F), deep warm ocean layer (200 meters in depth), and a Coriolis is needed. Japan can satisfies the deep warm ocean layer and the Coriolis. And the warm ocean temperatures will does not satisfy the requirement. The tradewinds blows northeast to southeast , and it creates tropical wave and troughs. After that, the convergence convection happens which is went converging air rises and cool, The clouds from behind the trough, and the tropical waves grow in to hurricanes.

http://www.mhschool.com/socialstudies/2007/hurricanekatrina/images_hurricaneKatrina/MMh-hurricane-diagram-m.jpg

In the United Sates, the general path do hurricanes usually travels from southern Atlantis ocean  to the Gulf of Mexico. Its the dominant direction that hurricanes travel to United States because of the westerlies and tradewinds blow the hurricanes those directions. Hurricanes happens in Japan but they are called Typhoons. The average number of hurricanes that hit the United States per year is 5. Website:http://www.ems.psu.edu/~nese/ch11sec2.htm. The average number of typhoons that hit  Japan per year is one. Only 28 typhoons have hit Japan so far, that were accorded. Website:  http://www.japantimes.co.jp/life/2013/11/03/language/this-is-the-year-of-the typhoon/#. VG7sofnF9qU.