The Galveston Study Area: –Evacuation Statistics –Clearance Times Visual Impact of a Category 4 Storm on the Galveston Study Area INTRODUCTION

The Design Storm Hurricane Carla September 5-11, 1961 A 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 OConnor), 14.8 feet (Houston Ship Channel) Rainfall of inches (Galveston), 6.25 inches (Victoria), 5.15 inches (Corpus Christi) 34 Deaths in Texas $400,000,000 of storm damage (1961 dollars)

Hurricane Carly Houston-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

feet feet + Galveston HOUSTON Pasadena Texas City League City Anahuac Alvin Angleton feet feet + Houston-Galveston Study Area Standard MEOW (Maximum Envelope of Water) 4/22 at 1400 CDT La Porte

Houston-Galveston Study Area Mean Sea Level Dickinson Texas City Galveston

Hurricane Carly 4/22 at 0800 CDT MEOW NW at 8 MPH Surge: 4.5 Feet Dickinson Texas City Galveston

Hurricane Carly 4/22 at 1200 CDT MEOW NW at 8 MPH Surge: 8.5 Feet Dickinson Texas City Galveston

Hurricane Carly 4/22 at 1700 CDT MEOW NW at 8 MPH Surge: 12.8 Feet Dickinson Texas City Galveston

Hurricane Carly 4/22 at 2200 CDT MEOW NW at 8 MPH Surge: 15.8 Feet Dickinson Texas City Galveston

Hurricane Carly Category 5 MEOW NW at 8 MPH Surge: 19.0 Feet Dickinson Texas City Galveston

Houston-Galveston Study Area Mean Sea Level UT Medical Branch

UT Medical Branch Hurricane Carly 4/22 at 0800 CDT MEOW NW at 8 MPH Surge: 4.5 Feet

UT Medical Branch Hurricane Carly 4/22 at 1200 CDT MEOW NW at 8 MPH Surge: 8.5 Feet

UT Medical Branch Hurricane Carly 4/22 at 1700 CDT MEOW NW at 8 MPH Surge: 12.8 Feet

UT Medical Branch Hurricane Carly 4/22 at 2200 CDT MEOW NW at 8 MPH Surge: 15.8 Feet

UT Medical Branch Hurricane Carly Category 5 MEOW NW at 8 MPH Surge: 19.0 Feet

Houston-Galveston Study Area Mean Sea Level

Hurricane Carly Category 5 MEOW NW at 8 MPH Surge: 19.0 Feet

Hurricane Carly Category 5 Wind Damage Surge: 19.0 Feet

Houston-Galveston Study Area Mean Sea Level HOUSTON Texas City Galveston La Porte League City Alvin Baytown JSC

HOUSTON Texas City Galveston La Porte League City Alvin Hurricane Carly 4/22 at 0800 CDT MEOW NW at 8 MPH Surge: 4.8 Feet Baytown JSC

HOUSTON Texas City Galveston La Porte League City Alvin Hurricane Carly 4/22 at 1200 CDT MEOW NW at 8 MPH Surge: 10.6 Feet Baytown JSC

HOUSTON Texas City Galveston La Porte League City Alvin Hurricane Carly 4/22 at 1700 CDT MEOW NW at 8 MPH Surge: 17.9 Feet Baytown JSC

HOUSTON Texas City Galveston La Porte League City Alvin Hurricane Carly 4/22 at 2000 CDT MEOW NW at 8 MPH Surge: 22.4 Feet Baytown JSC

Houston-Galveston Study Area Mean Sea Level HOUSTON La Porte Pasadena Baytown Webster Bacliff Deer Park JSC

Hurricane Carly 4/22 at 0800 CDT MEOW NW at 8 MPH Surge: 4.8 Feet HOUSTON La Porte Pasadena Baytown Webster Bacliff Deer Park JSC

Hurricane Carly 4/22 at 1200 CDT MEOW NW at 8 MPH Surge: 10.6 Feet HOUSTON La Porte Pasadena Baytown Webster Bacliff Deer Park JSC

Hurricane Carly 4/22 at 1700 CDT MEOW NW at 8 MPH Surge: 17.9 Feet HOUSTON La Porte Pasadena Baytown Webster Bacliff Deer Park JSC

Hurricane Carly 4/22 at 2000 CDT MEOW NW at 8 MPH Surge: 22.4 Feet HOUSTON La Porte Pasadena Baytown Webster Bacliff Deer Park JSC

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

Estimated Total Wind Damage from Hurricane Carly Hurricane Carly Houston-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 Hurricanes7 8 6 Major Hurricanes >Category *The 2005 hurricane forecast will be updated in mid-April.