14501

Information about 14501

Published on October 7, 2007

Author: Peppar

Source: authorstream.com

Content

Tornados:  Tornados Author R.T. Schindler Distributed by the Disaster Team Supercourse (www.pitt.edu/~super1) Developers:  Developers Developed by Randall Schindler while at Steven F. Austin University Distributed by the Supercourse Tornado Team, Harold Brooks, NOAA, Daniel Mccarthy, NOAA, Schaefer, NOAA Eric Noji, CDC, Scott Lillianbridge, Uni. Texas, Francois Sauer, Supercourse, Kansas City Faina Linkov, Mita Lovalekar, Ronald LaPorte, Supercourse Pittsburgh Doug Barrett, Janet Winterton, Fraser, Kevin Maney, USA Today Purpose:  Purpose At the time of a tornado teachers need to present up-to-date information to students A group of Global Experts in meteorology and prevention from academia, education, and industry have banded together to distribute cutting edge tornado lectures to schools for free As the disaster evolves, new slides will be sent Additional Lectures by world experts:  Additional Lectures by world experts "Tornadoes" lecture by Lillibridge, Scott R www.pitt.edu/~super1/lecture/lec14141/015.htm "A Historical Look at Tornadoes: Damage and Death" by Harold Brooks www.pitt.edu/~super1/lecture/lec14321/index.htm which have also three more links to online lectures: Development of synthetic severe thunderstorm climatologies (http://www.nssl.noaa.gov/users/brooks/public_html/present/synworld.html) Tornado deaths in the US and mobile homes (http://www.nssl.noaa.gov/users/brooks/public_html/present/mobile.html) The distribution of tornadoes by F-scale in time and space Harold Brooks.(http://www.nssl.noaa.gov/users/brooks/public_html/present/Fujita_2K3.html) “Tornado-Related deaths and injuries due to the May 3, 1999 by Sheryll Brown, Pam Archer, Elizabeth Kruger and corresponding author Sue Mallonee from Injury Prevention Service, Oklahoma State Department of Health www.pitt.edu/~super1/lecture/lec13531/index.htm Tornado History:  Tornado History The “Tri-State Tornado” is the most violent tornado on record On March 18, 1925, the tornado formed in Missouri and traveled 219 miles across Illinois into Indiana The funnel was up to .75 miles across and traveled as fast as 73 mph. It killed approximately 635 people First Tornado Forecast:  First Tornado Forecast On March, 25 1948, Major Fawbush and Captain Miller determined that the conditions of the atmosphere just west of Tinker AFB, OK were suitable for tornado development. The first tornado forecast ever was issued. A few hours later, a tornado arrived causing significant damage to the base. However, no deaths and only a few injuries occurred because many had been warned by the tornado forecast. Tornado:  Tornado A violently rotating column of air (vortex), hanging from a cumulonimbus cloud, with circulation that touches the surface of the earth Tornado Formation:  Tornado Formation Supercell Storm:  Supercell Storm Severe weather occurs as strong downbursts…large hail…occasional flash floods and weak to violent tornadoes Severe event almost always occur near the updraft interface typically in the rear (southwest) storm flank. Some of the supercells have the interface on the front of the southeast flank High predictability of occurrence of severe events once a storm is identified as a supercell Extremely dangerous to public Extremely dangerous to aviation The Supercell:  The Supercell Tornado forms here Tornado Facts:  Tornado Facts Tornados can occur almost anywhere in the world Duration: a few minutes Diameter (Avg.): 0.4 km Length of path (Avg.): 6 km Funnel can travel from 0 mph up to ~70 mph, usually travels at 30 mph 99% of all tornados in Northern Hemisphere rotate counterclockwise Texas is #1 for frequency of tornados per year Between 1950 and 1995 Texas had 5,722 recorded tornados Risk of death in a tornado in Texas: 1 in 1,054,267 Texas cost per person per year for tornados: $3.94 Tornado Myths:  Tornado Myths A highway overpass is a safe place to take shelter under during a tornado Opening windows during a tornado will help balance the pressure between the inside and outside of the house and may prevent destruction of the structure One should seek shelter in the southwest corner of a house or basement. Tornado Oddities:  Tornado Oddities Tornados are reported to routinely carry objects many miles and have: sucked the frogs out of a pond and dropped them on a town carried a necktie rack with 10 ties attached 40 miles carried a flour sack 110 miles from a mill Tornados also drive objects into other objects and have: Driven splinters into an iron fire hydrant Driven straw and grass into telephone poles When Tornados Occur:  When Tornados Occur Anytime of the year- usually in the spring, summer, and fall Most tornados occur during late spring in the month of May Between the late afternoon and early evening is when most tornados are spawned The most dangerous time for formation during evening hours A typical late afternoon tornado Slide16:  Songer http://www.pitt.edu/~super1/lecture/lec0761/005.htm Where Tornados Occur:  Where Tornados Occur Tornado Alley covers the Great Plains states Tornado Wind Speed:  Tornado Wind Speed In 1971, Dr. Fujita developed a way of measuring the winds of a tornado. He reasoned that there was a link between wind speed and the damage caused by a tornado. There are 6 categories of tornados (F0 – F5) F0 Category:  F0 Category (Weak) winds (40-72) mph , little damage Damage: tree branches snapped, chimneys toppled, signs torn down F3 Category:  F3 Category (Strong) winds: (158-206) mph, severe damage Damage: most trees uprooted, trains overturned, roofs torn off, walls demolished F5 Category:  F5 Category (Violent) winds: (261- 319) mph, incredible damage; rare Damage: bark peeled off trees, houses lifted off foundations, vehicles travel greater than 100 m through the air Tornado Occurrence by Category:  Tornado Occurrence by Category Tornado Deaths by Category:  Tornado Deaths by Category Tornado Forecasting:  Tornado Forecasting Meteorologists who predict tornado development analyze the current atmospheric conditions such as: air temp., barometric pressure, the locations of fronts, wind velocities, convection, etc. Probably the most useful tool a meteorologist can use to identify tornados is radar, specifically Doppler radar (WSR-88D) Tornados on Radar:  Tornados on Radar Doppler image of a rain-wrapped tornado The Life cycle of a Tornado:  The Life cycle of a Tornado The “Life Cycle” of a tornado consists of four distinct stages. These stages were first determined during the Union City, OK tornado of 1973 Most tornadic events are difficult to classify and may not exhibit stages that are obvious to the observer Sometimes events become unclear: one tornado weakens another appears, or single event? Tornados do not “skip” – gaps in damage path may indicate a temporary weakening in intensity Slide28:  Beginning Stage: Tornado begins as a rotating wall cloud which quickly evolves into a funnel Slide29:  Early Stage: Tornado funnel develops (may be transparent) and extends down from the cloud to the ground Slide30:  Mature Stage: Tornado funnel reaches maximum width as well as maximum intensity then begins to shrink Slide31:  Decay Stage: tornado may remain stationary and take on a ropelike appearance before dissipating The Tornado Outbreak of May 3, 1999:  The Tornado Outbreak of May 3, 1999 Severe thunderstorms move into Ok, TX, Ks and spawn estimated 70 tornados, most occurred in Oklahoma In Oklahoma 40 people killed, 675 injured Damage: $1.2 billion Largest tornado outbreak in Oklahoma history 1,780 homes completely destroyed 6,550 homes damaged Slide34:  Satellite image taken May 3, 1999 @ 645 CDT Slide36:  View from the air of a tornado path in Central OK Slide37:  Tornado near Amber, OK at 6:30 CDT Microburst:  Microburst Microbursts are downdrafts from thunderstorms consisting of a narrow column of cool air traveling at high speeds which can cause damage similar to a weak tornado over a small area Waterspouts:  Waterspouts A waterspout is a tornado that forms over a body of water, or a tornado that moves from land onto water Storm Chasers:  Storm Chasers Storm chasers are a group made up of meteorologists and scientists, as well as amateur observers who voluntarily put themselves in the path of a severe thunderstorm in order to hopefully observe a tornado and obtain photographs and scientific data. Tornado Indicators:  Tornado Indicators A greenish colored sky associated with the thunderstorm (caused possibly by the scattering of light by particles in the sky) Mammatus clouds A sudden drop in barometric pressure Large hail of at least .75 in. diameter Strong winds > 60 mph Frequent and intense lightning A rotating wall cloud or a cloud that appears to hang from the sky A loud rumbling noise- seek shelter! Slide42:  Mammatus clouds Green sky Tornado Damage:  Tornado Damage Tornados mainly cause damage by picking up something and throwing it through the air or hurling objects against something A 20-ton trailer blown off U.S. 30; it bounced 5 times A pick-up truck caught in the path of a tornado Early Warning Systems:  Early Warning Systems The National Storm Prediction Center constantly monitors the weather and radars across the U.S. They are responsible for issuing tornado watches and warnings. Tornado Watch: a parallelogram is drawn around a 10,000 mi.^2 s area where the atmosphere seems to possess the conditions necessary for tornado development (severe thunderstorm) Tornado warning: a county has a thunderstorm which appears to have produced a tornado or someone has physically spotted a tornado, apparent funnel, or observed damage from what could be a tornado! SEEK SHELTER IMMEDIATELY!! Early Warning Systems:  Early Warning Systems Bibliography:  Bibliography http//www.photolib.noaa.gov/ http://www.nsl.noaa.gov/GoldenAnniversary http://www.srh.noaa.gov/oun/ http://www.usatoday.com/weather www.nsl.noaa.gov/~doswell?a_tornado/atornado.html http://www.disastercenter.com/ http://www.tornadoproject.com/ Church C., Burgess D., Doswell C., Davies-Jones,R., ed. The Tornado: Its Structure, Dynamics, Prediction, and Hazards. American Geophysical Union Press: 2000 Liu, Henry. Calculation Of Wind Speeds Required to Damage or Destroy Buildings. Publication within The Tornado

Related presentations


Other presentations created by Peppar

Financial Statement Analysis
10. 04. 2008
0 views

Financial Statement Analysis

Dr PH Presentation
07. 08. 2007
0 views

Dr PH Presentation

Burj Al Arab
22. 04. 2008
0 views

Burj Al Arab

cd4 hiv dr a singh
17. 04. 2008
0 views

cd4 hiv dr a singh

Philip Scott
17. 04. 2008
0 views

Philip Scott

RMIT 25July01 Pres
14. 04. 2008
0 views

RMIT 25July01 Pres

060125
13. 04. 2008
0 views

060125

Blomqvist
09. 04. 2008
0 views

Blomqvist

Rocks and Weathering
20. 09. 2007
0 views

Rocks and Weathering

Your First RSS Feed
29. 09. 2007
0 views

Your First RSS Feed

Switzerland
15. 10. 2007
0 views

Switzerland

t infantil y legislacion
22. 10. 2007
0 views

t infantil y legislacion

MAHA Talk
29. 10. 2007
0 views

MAHA Talk

Stylish Sentences
02. 11. 2007
0 views

Stylish Sentences

15 GardnerHarris
19. 11. 2007
0 views

15 GardnerHarris

cryptorchidism
19. 11. 2007
0 views

cryptorchidism

geometry and art P2
22. 11. 2007
0 views

geometry and art P2

Green Bldgs and WQ
31. 12. 2007
0 views

Green Bldgs and WQ

paper2
03. 01. 2008
0 views

paper2

Earthquakes Chap 5
20. 09. 2007
0 views

Earthquakes Chap 5

Ch08
20. 09. 2007
0 views

Ch08

El Paso Electric lowres pics
07. 08. 2007
0 views

El Paso Electric lowres pics

AG presentation Infrastructure
07. 08. 2007
0 views

AG presentation Infrastructure

GCRA Presentation 2005 1
07. 08. 2007
0 views

GCRA Presentation 2005 1

Asian Alphabet Book 04 17 06
07. 08. 2007
0 views

Asian Alphabet Book 04 17 06

pres maldives
07. 08. 2007
0 views

pres maldives

Tsunami Effects
07. 08. 2007
0 views

Tsunami Effects

Maldives
07. 08. 2007
0 views

Maldives

Global gs pp 0207
22. 10. 2007
0 views

Global gs pp 0207

feist ch14McCrae
06. 08. 2007
0 views

feist ch14McCrae

measurement and geometry
07. 08. 2007
0 views

measurement and geometry

arguments
15. 11. 2007
0 views

arguments

Tidal Energy Overview7
07. 08. 2007
0 views

Tidal Energy Overview7

camoa presse spip 01
07. 08. 2007
0 views

camoa presse spip 01

PE Rocks Igneous
20. 09. 2007
0 views

PE Rocks Igneous

ROCKS and how to identify them
20. 09. 2007
0 views

ROCKS and how to identify them

RIPARWIN Presentation
03. 01. 2008
0 views

RIPARWIN Presentation

ioag9 jaxa briefing
03. 01. 2008
0 views

ioag9 jaxa briefing

social structure
19. 02. 2008
0 views

social structure

investing in the future
04. 03. 2008
0 views

investing in the future

Secondary Math Handout
07. 08. 2007
0 views

Secondary Math Handout

Roundtable
26. 10. 2007
0 views

Roundtable

NicholasEberstadt
15. 10. 2007
0 views

NicholasEberstadt

YTB 052007
12. 03. 2008
0 views

YTB 052007

raicevic
18. 03. 2008
0 views

raicevic

sbp 07
25. 03. 2008
0 views

sbp 07

purchasing sp presentation
20. 09. 2007
0 views

purchasing sp presentation

CSAPA Awareness2005
07. 08. 2007
0 views

CSAPA Awareness2005

FinalReport
22. 10. 2007
0 views

FinalReport

IJCDlineNojiri
09. 10. 2007
0 views

IJCDlineNojiri

DFT KeyChallengesNicNewm an
05. 10. 2007
0 views

DFT KeyChallengesNicNewm an

ILejarraga
07. 08. 2007
0 views

ILejarraga

EP Tecon 0405
19. 06. 2007
0 views

EP Tecon 0405

famigliaim presaanto 3
18. 06. 2007
0 views

famigliaim presaanto 3

Bulldogs Best Books 1211
18. 06. 2007
0 views

Bulldogs Best Books 1211

btw e 008 moriresearch
18. 06. 2007
0 views

btw e 008 moriresearch

BPL Sanyo JV Pressrelease
18. 06. 2007
0 views

BPL Sanyo JV Pressrelease

bite overview
18. 06. 2007
0 views

bite overview

biogas
18. 06. 2007
0 views

biogas

BILBAO
18. 06. 2007
0 views

BILBAO

Benef oport
18. 06. 2007
0 views

Benef oport

formazrete
18. 06. 2007
0 views

formazrete

lect 4 1113 Class Ig Rx1
20. 09. 2007
0 views

lect 4 1113 Class Ig Rx1

ebs2 elearn07
19. 06. 2007
0 views

ebs2 elearn07

boiron
18. 06. 2007
0 views

boiron

fiscal
18. 06. 2007
0 views

fiscal

12 productivity quiz
16. 06. 2007
0 views

12 productivity quiz

10 1
16. 06. 2007
0 views

10 1

215 Pics With Captions
16. 06. 2007
0 views

215 Pics With Captions

2007 Power Stroke
16. 06. 2007
0 views

2007 Power Stroke

20070422
16. 06. 2007
0 views

20070422

20070225
16. 06. 2007
0 views

20070225

2005AM LC 2C
16. 06. 2007
0 views

2005AM LC 2C

2004 4082OPH1 01 Tiefer
16. 06. 2007
0 views

2004 4082OPH1 01 Tiefer

1kanrap
16. 06. 2007
0 views

1kanrap

1kanpres
16. 06. 2007
0 views

1kanpres

1kanintro
16. 06. 2007
0 views

1kanintro

1kancom
16. 06. 2007
0 views

1kancom

19 Flake 071706
16. 06. 2007
0 views

19 Flake 071706

OIF Presentation Final Sept07
05. 01. 2008
0 views

OIF Presentation Final Sept07

12nightacts
16. 06. 2007
0 views

12nightacts

Fri 0830 RegionalAQ liao 1 pc
16. 10. 2007
0 views

Fri 0830 RegionalAQ liao 1 pc

bullismo
18. 06. 2007
0 views

bullismo

ARVs friends or foes McCoy
28. 12. 2007
0 views

ARVs friends or foes McCoy

Rock types silica sat
20. 09. 2007
0 views

Rock types silica sat

Threats to our Water
29. 02. 2008
0 views

Threats to our Water

SIVplanmeet svg3c Shakir
07. 08. 2007
0 views

SIVplanmeet svg3c Shakir

Rajesh Mehta
07. 08. 2007
0 views

Rajesh Mehta

FER 9 und 20
18. 06. 2007
0 views

FER 9 und 20

georgevidor
16. 11. 2007
0 views

georgevidor

beo presentation
18. 06. 2007
0 views

beo presentation

EVACAR Otesis
18. 06. 2007
0 views

EVACAR Otesis

Calvin Dude
07. 08. 2007
0 views

Calvin Dude

PRACTICAL4
29. 12. 2007
0 views

PRACTICAL4

cuamcfarland
20. 09. 2007
0 views

cuamcfarland

UHART
24. 11. 2007
0 views

UHART

News CIRIA document
01. 01. 2008
0 views

News CIRIA document

EverythingDigital
07. 08. 2007
0 views

EverythingDigital

ntra Master B
23. 10. 2007
0 views

ntra Master B

FSGDevCon20060419
15. 11. 2007
0 views

FSGDevCon20060419

Context06
15. 10. 2007
0 views

Context06

4 brittle I
20. 09. 2007
0 views

4 brittle I

WBTi
07. 08. 2007
0 views

WBTi

BTSA Technology Bytes
18. 06. 2007
0 views

BTSA Technology Bytes

FCP05 PD Flaum
06. 08. 2007
0 views

FCP05 PD Flaum

14 20H 10 1103 Dr SEARO
07. 08. 2007
0 views

14 20H 10 1103 Dr SEARO

echt Zeit
19. 06. 2007
0 views

echt Zeit

dortmund
19. 06. 2007
0 views

dortmund