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THE TREND CONTINUES: MORE TORNADOES IN 2011 THAN IN 2010

THE TREND CONTINUES: MORE TORNADOES IN 2011 THAN IN 2010. SPRING WEATHER CREATES FAVORABLE CONDITIONS FOR SEVERE STORMS APRIL 14-16, 2011. Walter Hays, Global Alliance for Disaster Reduction, University of North Carolina, USA. MAP OF THE USA’s “TORNADO ALLEY”.

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THE TREND CONTINUES: MORE TORNADOES IN 2011 THAN IN 2010

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  1. THE TREND CONTINUES:MORE TORNADOES IN 2011 THAN IN 2010 SPRING WEATHER CREATES FAVORABLE CONDITIONS FOR SEVERE STORMS APRIL 14-16, 2011 Walter Hays, Global Alliance for Disaster Reduction, University of North Carolina, USA

  2. MAP OF THE USA’s “TORNADO ALLEY”

  3. 2011: MORE TORNADOES THAN IN 2010 • JANUARY---10 • FEBRUARY---67 • MARCH---115 • APRIL---141 • MAY---??

  4. FAVORABLE CONDITIONS FOR CREATION OF SEVERE STORMS • Strengthening winds • Daytime heating • Low-level moisture return along and ahead of cool front

  5. So far during 2011, the combination of strengthening winds, daytime heating, and low-level moisture return along and ahead of the cold front has created an environment favorable for the development of long-lived super cell thunderstorms capable of producing strong tornadoes.

  6. SUCH WAS THE CASE ON APRIL 14-16, 2011

  7. THE APRIL 14-16 EXAMPLE: A SEVERE WEATHER SYSTEM THAT MOVED EAST ACROSS THE USA ON APRIL 14-16 SPAWNED NEARLY 100 TORNADOES IN OK, AR, MS, AND AL, DAMAGED COMMUNITIES, AND KILLED 17 PEOPLE IN THREE DAYS.

  8. THE SEVERE WEATHER SYSTEM SPAWNED 5 TORNADOES IN OKLAHOMA: APRIL 14TH AFTER A TORNADO LEFT A ½ MILE WIDE AND 7 MILE LONG PATH OF DESTRUCTION IN THE TOWN OF TUSHKA, OK, THE SYSTEM MOVED ON INTO ARKANSAS

  9. TUSHKA: DAMAGE FROM TORNADO

  10. TUSHKA: MOBILE HOME DESTROYED

  11. TUSHKA: HOUSE DAMAGED AND CAR OVERTURNED

  12. IMPACTS IN ARKANSAS • The same weather system also spawned tornadoes with 130 kph (80 mph) winds in Arkansas, killing seven. .

  13. IMPACTS IN ALABAMA • The same weather system spawned tornadoes in six counties in Alabama Friday, causing at least eight deaths. .

  14. IMPACTS IN MISSISSIPPI • Tornadoes spawned by the same system caused major damage in the town of Clinton, near Jackson, the capitol of Mississippi..

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