• The Galveston Study Area:– Evacuation Statistics– Clearance Times

• Visual Impact of a Category 4 Storm on the Galveston Study Area

INTRODUCTION

The Design StormHurricane Carla

September 5-11, 1961A large, slow-moving storm that made landfall near Port Lavaca

Sustained winds of 150 mph (Category 4)

Peak wind gusts of 175 mph

Storm surge of 22 feet (Matagorda Bay) 18.5 feet (Port Lavaca), 14.5 feet (Port O’Connor), 14.8 feet (Houston Ship Channel)

Rainfall of 16.49 inches (Galveston), 6.25 inches (Victoria), 5.15 inches (Corpus Christi)

34 Deaths in Texas

$400,000,000 of storm damage (1961 dollars)

Hurricane CarlyHouston-Galveston Study Area

Landfall

Evacuation Window: -50 hours

.

Hurricane Carly Category 3 04/19 14:00 CDT

Evacuation Window: -38 hours

.

Hurricane Carly Category 3 04/20 08:00 CDT

Evacuation Window: -32 hours

.

Hurricane Carly Category 3 04/20 14:00 CDT

Evacuation Window: -26 hours

.

Hurricane Carly Category 3 04/20 20:00 CDT

Evacuation Window: -20 hours

.

Hurricane Carly Category 3 04/21 02:00 CDT

Evacuation Window: -14 hours

.

Hurricane Carly Category 4 04/21 08:00 CDT

Evacuation Window: -8 hours

.

Hurricane Carly Category 4 04/21 14:00 CDT

Evacuation Window: -2 hours

.

Hurricane Carly Category 4 04/21 20:00 CDT

.

Hurricane Carly Category 5 04/22 02:00 CDT

.

Hurricane Carly Category 5 04/22 08:00 CDT

.

Hurricane Carly Category 5 04/22 14:00 CDT

.

Hurricane Carly Category 4 04/22 20:00 CDT

.

Hurricane Carly Category 3 04/23 02:00 CDT

+

+

+

+ 22.4 feet

++ 23.9 feet

+

Galveston

HOUSTON

Pasadena

Texas City

LeagueCity

Anahuac

Alvin

Angleton

++ 22.2 feet

+ + 15.8 feet

+

Houston-Galveston Study AreaStandard MEOW

(Maximum Envelope of Water)4/22 at 1400 CDT

La Porte

Houston-Galveston Study Area

Mean Sea Level

Dickinson

Texas City

Galveston

Hurricane Carly4/22 at 0800 CDT

MEOW NW at 8 MPHSurge: 4.5 Feet

Dickinson

Texas City

Galveston

Hurricane Carly4/22 at 1200 CDT

MEOW NW at 8 MPHSurge: 8.5 Feet

Dickinson

Texas City

Galveston

Hurricane Carly4/22 at 1700 CDT

MEOW NW at 8 MPHSurge: 12.8 Feet

Dickinson

Texas City

Galveston

Hurricane Carly4/22 at 2200 CDT

MEOW NW at 8 MPHSurge: 15.8 Feet

Dickinson

Texas City

Galveston

Hurricane CarlyCategory 5

MEOW NW at 8 MPHSurge: 19.0 Feet

Dickinson

Texas City

Galveston

Houston-Galveston Study Area

Mean Sea Level

UT MedicalBranch

UT MedicalBranch

Hurricane Carly4/22 at 0800 CDT

MEOW NW at 8 MPHSurge: 4.5 Feet

UT MedicalBranch

Hurricane Carly4/22 at 1200 CDT

MEOW NW at 8 MPHSurge: 8.5 Feet

UT MedicalBranch

Hurricane Carly4/22 at 1700 CDT

MEOW NW at 8 MPHSurge: 12.8 Feet

UT MedicalBranch

Hurricane Carly4/22 at 2200 CDT

MEOW NW at 8 MPHSurge: 15.8 Feet

UT MedicalBranch

Hurricane CarlyCategory 5

MEOW NW at 8 MPHSurge: 19.0 Feet

Houston-Galveston Study Area

Mean Sea Level

Hurricane CarlyCategory 5

MEOW NW at 8 MPHSurge: 19.0 Feet

Hurricane CarlyCategory 5

Wind DamageSurge: 19.0 Feet

Houston-Galveston Study Area

Mean Sea Level

HOUSTON

TexasCity

Galveston

La Porte

LeagueCity

Alvin

Baytown

JSC

HOUSTON

TexasCity

Galveston

La Porte

LeagueCity

Alvin

Hurricane Carly4/22 at 0800 CDT

MEOW NW at 8 MPHSurge: 4.8 Feet

Baytown

JSC

HOUSTON

TexasCity

Galveston

La Porte

LeagueCity

Alvin

Hurricane Carly4/22 at 1200 CDT

MEOW NW at 8 MPHSurge: 10.6 Feet

Baytown

JSC

HOUSTON

TexasCity

Galveston

La Porte

LeagueCity

Alvin

Hurricane Carly4/22 at 1700 CDT

MEOW NW at 8 MPHSurge: 17.9 Feet

Baytown

JSC

HOUSTON

TexasCity

Galveston

La Porte

LeagueCity

Alvin

Hurricane Carly4/22 at 2000 CDT

MEOW NW at 8 MPHSurge: 22.4 Feet

Baytown

JSC

Houston-Galveston Study Area

Mean Sea Level

HOUSTON

La Porte

Pasadena

Baytown

Webster

Bacliff

Deer Park

JSC

Hurricane Carly4/22 at 0800 CDT

MEOW NW at 8 MPHSurge: 4.8 Feet

HOUSTON

La Porte

Pasadena

Baytown

Webster

Bacliff

Deer Park

JSC

Hurricane Carly4/22 at 1200 CDT

MEOW NW at 8 MPHSurge: 10.6 Feet

HOUSTON

La Porte

Pasadena

Baytown

Webster

Bacliff

Deer Park

JSC

Hurricane Carly4/22 at 1700 CDT

MEOW NW at 8 MPHSurge: 17.9 Feet

HOUSTON

La Porte

Pasadena

Baytown

Webster

Bacliff

Deer Park

JSC

Hurricane Carly4/22 at 2000 CDT

MEOW NW at 8 MPHSurge: 22.4 Feet

HOUSTON

La Porte

Pasadena

Baytown

Webster

Bacliff

Deer Park

JSC

<$10 million$10 - 100 million$100 million - 1 billion$1 - 10 billion>$10 billion

Estimated Total Wind Damage from Hurricane Carly

Hurricane CarlyHouston-Galveston Study Area Landfall

Counties Affected: 31

Population Affected: 5,425,334

Households Affected: 1,913,906

Residences Destroyed: 119,626

Debris Generated: 124,023,000 tons

Damage Amount: $73,612,335,000

HURRICANE FORECAST

2004 Forecast

2004 Actual

2005 Forecast*

Named Storms 13 15 11

Hurricanes 7 8 6

Major Hurricanes >Category 2

4 5 3

*The 2005 hurricane forecast will be updated in mid-April.