Tornadoes How tornadoes are formed The process begins

Tornadoes

How tornadoes are formed The process begins with the storm drawing into itself warm, humid air. The warm air rises To a point where the moisture condense into rain. This sets up an opposing motion: cool downdraft. Changes in wind speed or direction at higher altitudescalled wind shear- can knit together the cool air and warm air in a horizontally spinning tube. Like a giant invisible steamroller. If more wend shifts tilt this tube so that one end touches the ground.

Tornado classification EF-Scale: Old F-Scale: Typical Damage: EF-0 (65 -85 mph) F 0 (65 -73 mph) Light damage. Peels surface off some roofs; some damage to gutters or siding; branches broken off trees; shallow-rooted trees pushed over. EF-1 (86 -110 mph) F 1 (73 -112 mph) Moderate damage. Roofs severely stripped; mobile homes overturned or badly damaged; loss of exterior doors; windows and other glass broken. EF-2(111 -135 mph) F 2 (113 -157 mph) Considerable damage. Roofs torn off well-constructed houses; foundations of frame homes shifted; mobile homes completely destroyed; large trees snapped or uprooted; light-object missiles generated; cars lifted off ground. EF-3 (136 -165 F 3 (158 -206 mph) Severe damage. Entire stories of well-constructed houses destroyed; severe damage to large buildings such as shopping malls; trains overturned; trees debarked; heavy cars lifted off the ground and thrown; structures with weak foundations blown away some distance. EF-4 (166 -200 F 4 (207 -260 mph) Devastating damage. Whole frame houses Well-constructed houses and whole frame houses completely leveled; cars thrown and small missiles generated. EF-5 (>200 mph) F 5 (261 -318 mph) Incredible damage. Strong frame houses leveled off foundations and swept away; automobile-sized missiles fly through the air in excess of 100 m (109 yd); high-rise buildings have significant structural deformation; incredible phenomena will occur. EF No rating F 6 -F 12 (319 mph Inconceivable damage. Should a tornado with the maximum wind speed in excess of to speed of sound) EF-5 occur, the extent and types of damage may not be conceived. A number of missiles such as iceboxes, water heaters, storage tanks, automobiles, etc. will

Doppler Radar • Doppler Radar: is a form of radar that can detect motion directly. • Doppler radar uses what is called the Doppler effect: observable change in frequency of waves produced by the motion of a wave source or the reciver. • It was created by Christian Doppler, an Australian physicist in 1842

Doppler radar http: //www. bing. com/videos/search? q=doppler%20 radar%2 0 tornado&qs=VI&form=QBVR&pq=doppler%20 radar%2 F%20 t&sc=816&sp=2&sk=VI 1&ajf=70&ffirst=1#view=detail&mid=B 6 A 689 3 EDE 5 EED 216 AC 5 B 6 A 6893 EDE 5 EED 216 AC 5 The link above is a explanation of how to read Doppler radar Below is a 3 D map of a storm cell that produced the Vilonia Tornado The picture on the right shows A reflectivity view of Doppler radar.

citations • http: //www. bing. com/images/search? q=Doppler+Image+of++f 5+Tornad o&qs=n&form=QBIR&pq=doppler+image+of+f 5+tornado&sc=0 -24&sp=1&sk= • http: //www. wunderground. com/tornado/? show=significant • http: //www. bing. com/images/search? q=How+Do+Tornadoes+Form&Fo rm=IQFRDR • http: //en. wikipedia. org/wiki/April_27%E 2%80%9330, _2014_tornado_o utbreak • http: //www. nationalgeographic. com/eye/tornadoes/phenomena. html