PPT-Tornadoes and Hurricanes

By Maggie Colf Tornadoes There is also disagreement as to whether separate touchdowns of the same funnel constitute separate tornado Tornadoes may not have a visible funnel Truth is that we dont fully understand. Tornadoes. are very violent. When Tornadoes are single they last only a few minutes. Tornadoes travel in a north eastern direction. Tornadoes are usually in a funnel shape. Tornadoes can happen in any part of the United States. Usually the eye of a tornado is the calmest place. Tornadoes are mostly gray.. . Insurance Trends and Challenges in an Era of Climate Volatility. National Tornado Summit. Oklahoma City, OK. February 11, 2014. Robert P. Hartwig, Ph.D., CPCU, President & Economist. Insurance Information Institute  110 William Street  New York, NY 10038. The History, Structure, Development, and Destruction. Source: http://www.dc.peachnet.edu/~pgore/students/w97/matheson/hpage.htm. What is a hurricane?. Violent cyclonic storm that develops in the tropical region. S6E4. I can relate unequal heating of land and water surfaces to form tornados and thunderstorms.. I can relate how moisture evaporating from the oceans affects the weather patterns and events such as hurricanes.. October 27/28 2010. Extreme Weather. Hurricane Ivan. over Gulf, Sept. 2004. Source: NOAA. Definitions. Climate Change. : . . Changes in climate of the past, present or future associated with . natural . Science. Thunderstorms & Lightning. Conditions That Occur During Thunderstorms. Thunder, lighting, high winds, heavy rain, hail. Electric Sparks by Shuffling . Lightening is like electric sparks that you can make by shuffling across a carpet before touching a metal object. Both lightning and small electric sparks are discharges of built up static electricity. . U.S averages 800 tornadoes/year; more than any country. Canton, MI Dec. 23, 2015. EF-1 (90 mph winds). .  .                              . 933. . tornadoes in . 2016. Be able to describe . how . and why a . TORNADO. forms, and the role of the . MESOCYCLONE. in formation.. Be able to identify the . THREE. main . TYPES. of tornadoes and the key tornado formation . Progression of Tropical Events. Easterly Wave (Tropical Disturbance). Tropical Depression. Tropical Storm. Hurricane. 10-25%. 50-60%. Easterly Wave. Tropical Cyclones and Sea-Surface Temperatures. Geography of storm names. Atlantic . and eastern Pacific. : . “hurricanes” . Indian Ocean and Australia: . “cyclones”. Western Pacific, N. hemisphere: . “typhoons”. Western Pacific typhoons, 2011 . Catastrophic events. Before we can see how they affect ecosystems we need to understand how they form. HURRICANES. How do Hurricanes Form? . Stage 1: A Tropical Disturbance Forms. Most Atlantic hurricanes begin life as organized clusters of thunderstorms off the west coast of Africa. These thunderstorms form along waves in the prevailing trade winds. The waves, called easterly waves, can be more than 2500 km (1550 mi) long. The cluster of thunderstorms is called a tropical disturbance.. Flood . – any relatively high stream flow overtopping the natural or artificial banks in a water system.. Common Causes:. Long-lasting rainfall over a broad area. Locally intense thunderstorm - generated rainfall. Hurricane Seasons. Saffir. -Simpson Scale. What is a hurricane. ?. What . 4 conditions are necessary for hurricane . formation. What . happens as hurricanes approach land?. Based on wind speed:. Hurricanes that are Category 3 or higher . Presentation provided by:Bureau of Economic GeologyJackson School of GeosciencesThe University of Texas at Austin What Is A Hurricane? Hurricanes are intense tropical cyclones with a maximum sustained