Top Banner
HURRICANES The History, Structure, Development, and Destruction e: http://www.dc.peachnet.edu/~pgore/students/w97/matheson/hpage.htm
23

HURRICANES

Jan 01, 2016

Download

Documents

cadman-buck

HURRICANES. 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 Wind speeds are > 74 mph. Source: http://earthobservatory.nasa.gov/ - PowerPoint PPT Presentation
Welcome message from author
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
Page 1: HURRICANES

HURRICANES

The History, Structure, Development, and

Destruction

Source: http://www.dc.peachnet.edu/~pgore/students/w97/matheson/hpage.htm

Page 2: HURRICANES

What is a hurricane?

Violent cyclonic storm that develops in the tropical region

Wind speeds are > 74 mph

Source: http://earthobservatory.nasa.gov/Newsroom/NewImages/images.php3?img_id=680

Page 3: HURRICANES

Rotation and Pressure

In which direction does a hurricane rotate?

COUNTERCLOCKWISE

Is the barometric pressure inside the hurricane high or low?

LOW

Page 4: HURRICANES

When is Hurricane Season?

June 1st throughNovember

31st

Page 5: HURRICANES

What conditions must be present for a hurricane to

develop?

Warm ocean temperatures (>80˚ F) up to 60m deep

Little to no wind shear Low pressure system at

least 5˚ North or South of Equator

Rotation caused by winds Source:

http://lwf.ncdc.noaa.gov/oa/reports/fran/

fran.html

Page 6: HURRICANES

What is the major source of energy fueling a

hurricane?

Heat Energy evaporating from the ocean surface

Source: http://ww2010.atmos.uiuc.edu/(Gh)/guides/mtr/hyd/evap.rxml

Page 7: HURRICANES

Hurricane Anatomy

Source: http://hurricanes.noaa.gov/prepare/structure.htm

Page 8: HURRICANES

Another look at the Structure

Source: http://hurricanes.noaa.gov/prepare/structure.htm

Page 9: HURRICANES

Comparison of Terms Tropical Disturbance

Group of thunderstorms in the tropics that are present for at least 24 hours

Tropical Wave lack of circulation, winds <25 mph and

every direction

Tropical Depressionclosed circulation but disorganized, winds

at least 25 mph

Page 10: HURRICANES

Comparison of Terms

Tropical Storm Shower and thunderstorm moves over

closed circulation, winds greater than 39 mph

HurricaneEye is developed, winds > 74 mph

Page 11: HURRICANES

Compare the Following

Source: http://ww2010.atmos.uiuc.edu/(Gh)/guides/mtr/hurr/stages/home.rxml

Page 12: HURRICANES

By what two factors is hurricane strength

measured?

Wind Speed

Barometric Pressure

Page 13: HURRICANES

What is the Scale Used to Categorize Hurricanes?

Saffir-Simpson ScaleCategor

yMax Wind

Speed(mph)

Min. Surface Pressure (mb)

Storm Surge m (ft)

1 74-96 > 980 1-1.7 (3-5)

2 97-111 979-965 1.8-2.6 (6-8)

3 112-131 964-945 2.7-3.8 (9-12)

4 132-155 944-920 3.9-5.6 (13-18)

5 > 155 < 920 > 5.7 (>19)Source: http://kids.earth.nasa.gov/archive/hurricane/saffir-simpson.html

Page 14: HURRICANES

What is a storm surge?

Large wall or dome of water that rushes into the coastline as a result of a hurricane making landfall

To the right are the areas affected by high storm surges

Souce: http://www.wkrg.com/hurricanecenter/surge/SE.jpg

Page 15: HURRICANES

Hurricane Katrina

Page 16: HURRICANES

Hurricane Katrina-hitting land

Page 17: HURRICANES

Hurricane Katrina

Page 18: HURRICANES
Page 19: HURRICANES

Explain why the deadliest storms were longer ago.

Lack of instrumentation to predict and track storms

People were not warned of the incoming danger

Source: http://www.1900storm.com/photographs/photo10.html

Results of the Galveston Hurricane

Page 20: HURRICANES

http://cindi.usgs.gov/cindi/hazard/event/floyd/ncflood/mediums/img023.jpg

Mrs. Parker’s

Old House

Final Water Level

Flooding of Tar River as result of Hurricanes Dennis and Floyd

DocksideTar RiverEstates

Page 21: HURRICANES

2008 Hurricane Names Arthur

BerthaCristobalDollyEdouardFayGustavHannaIkeJosephineKyleLaura

MarcoNanaOmarPalomaReneSallyTeddyVickyWilfred

Page 22: HURRICANES

Damage to Greenville

Source: http://www.guc.com/about/floyd.htm

Page 23: HURRICANES

Source: http://www.dc.peachnet.edu/~pgore/students/w97/matheson/hpage.htm

THE END