Tornado disaster management

tornados

1. welcome Presented By A. Chandra Sekhar TMBA-2013-05 MBA(ABM) Disaster management PGS-506

2. Tornado !

3. What Exactly Is A Tornado Violently rotating column of air (Vortex) extending from a thunderstorm to the ground

4. Tornado A tornado is violently rotating column of air that is in contact with both the surface of the earth and the base of a cumulus cloud

5. Types of tornados Waterspout Gustnado Multi-vortex Tornado Landspout

6. Waterspout waterspouts tornado are the ones forming over water and exhibiting similar patterns to the tornadoes forming on land. This type is not very common even if the tornadoes forming on land and later entering water are included.

7. Gustnado The word gustnado is a combination of 'gust front tornado' A gustnado is a short-lived whirl of dust and debris lasting from a few seconds to minutes. These tornadoes does not possess a condensation funnel do not always connect the surface to the base of the closest cloud base

8. Multi-vortex Tornado A tornado is termed as multiple-vortex when it has more than one vortex rotating around the main vortex. Here, the other vortices rotate around the axes; the vortices themselves rotate in the peripheral region of the eye of the tornado .

9. Landspout A landspout is similar to waterspout , only difference being that it is formed on land. These types of tornadoes are typically weaker than traditional tornadoes, but can still cause destruction because they can create strong winds

10. Tornado Facts 1. Tornadoes may appear nearly transparent until dust and debris are picked up or a cloud forms within the funnel. 2. The average tornado moves from southwest to northeast, but tornadoes have been known to move in any direction. 3. The average forward speed is 30 mph but may vary from nearly stationary to 70 mph. 4. The strongest tornadoes have rotating winds of more than 250 mph. 5. Tornadoes can accompany tropical storms and hurricanes as they move onto land.

11. Mostly Tornado effected areas

12. Tornadoes are found most frequently in the US In an average year, 1,200 tornadoes cause 70 fatalities and 1,500 injuries nationwide. "Tornado Alley," or the states at the highest risk of getting a tornado, include Arkansas, Iowa, Kansas, Louisiana, Minnesota, Nebraska, North Dakota, Ohio, Oklahoma, South Dakota, and Texas.

13. Measuring Tornado severity Fujita Scale EF Scale Fujita Scale 3-Second gust Speed (mph) EF Scale 3-Second gust Speed (mph) F0 45-78 EF0 65-85 F1 79-117 EF1 86-109 F2 118-161 EF2 110-137 F3 162-209 EF3 138-167 F4 210-261 EF4 168-199 F5 262-317 EF5 200-234 The Fujita Scale categorizes tornado severity based on observed damage. The six-step scale ranges from F0 (light damage) to F5 (incredible damage). Since February 2007, the National Weather Service has used the Enhanced Fujita Scale (EF Scale)

14. On August 11, 1999, an F2 tornado touched down in the metropolitan area of Salt Lake City. The tornado lasted ten minutes and killed one person, injured more than 80 people, and caused more than $170 million in damages. It was the most destructive tornado in Utah's history. Salt Lake City Tornado, Aug. 11, 1999 Orange fireball is a power sub-station exploding.

15. Sept. 2000 Damage Where do you think this Tornado ranked on the Fujita Scale?

16. April 3, 1974 Damage

17. Tornado forecasting Tornadoes tough to predict and forecast Size of storms Directions Tracking and forecasting The bad news Tornadoes develop faster than we thought Problems with warnings

18. Protecting ourselves Early warnings Tornado watch Tornado warning Taking shelter – down Basement In interior room Under furniture At a shelter or in a ditch Tornado survival kit

19. 8ft 30ft 8ft Equipment house designed to withstand a Tornado Provides Human Shelter in Emergencies

20. Structure: Rigid Height: 8 ft. Building Category: Length: 30 ft. Weight: 15,000lbs (approx) Surface: Moderately Smooth Wind Velocity: Up to 300mph IV Hurricane or F5 Tornado

21. Tornado precautions Under ground shelters Crouch down on your knees and protect your head with your arms. Don't run while tornado is approaching because they are faster than us Look for a shelter

22. THE END