1. Thunder Storms: Natures Punishment Jonathan Owenby Science Mr. Shepard

2. Thunderstorms  Thunderstorms are rain storms that sprout lightning. If they are severe they can bring hail and tornadoes. A Severe Weather Primer. Retrieved May 10, 2012 from http://www.nssl.noaa.gov/primer/tstorm/tst_basics.html

3. Thunderstorms The conditions that are necessary to form a thunderstorm are heat, unstable air masses, and moisture. Hong Kong Observatory, Retrieved May 14,2012 from http://www.hko.gov.hk/education/edu01met/wxphe/ele_thunderstorme.htm

4. Thunderstorms  The typical thunderstorm last about 30 minutes while more mature supercell thunderstorms can last for many hours. USA TODAY, Retrieved on May 14, 2012 from http://www.usatoday.com/weather/resources/askjack/archives-thunderstorms.htm

5. Thunderstorms  Thunderstorms usually happen in the summer between 2 and 4 o clock in the day. Answers, Retrieved May 14, 2012 from http://www.answers.com/topic/when-do-thunderstorms-occur

6. Thunderstorms  Thunderstorms can cause flash flooding, tornadoes, hail and lightning. It causes several hundred million dollars in damage to property and forests yearly. A Severe Weather Primer, Retrieved May 14, 2012 from http://www.answers.com/topic/wh en-do-thunderstorms-occur Emergency Management Agency, May 16, 2012 from http://www.morrowcounty.info/www/ index.php?option=com_content&vie w=article&id=72&Itemid=123

7. Thunderstorms  There are about 16 million thunderstorms each year. In the United States, central Florida has almost 100 thunderstorm days annually. Sky-Fire.tv, Retrieved May 14, 2012 from http://www.sky- fire.tv/index.cgi/thunderstorms.html#occur

8. Images Google images, Retrieved May 14, 2012 from severe-wx.pbworks.com