Hurricane Storm Surge Vulnerability Bob Humple Assistant Director - - PowerPoint PPT Presentation

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Hurricane Storm Surge Vulnerability Bob Humple Assistant Director - - PowerPoint PPT Presentation

Dec 23, 2023 459 likes •840 views

Hurricane Storm Surge Vulnerability Bob Humple Assistant Director Broward County Emergency Management Division The Hazards of a Hurricane 1. Wind 2. Rainfall and Flooding 3. Storm Surge* 4. Tornadoes * Storm Surge kills more people than

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Hurricane Storm Surge Vulnerability

Bob Humple Assistant Director Broward County Emergency Management Division

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The Hazards of a Hurricane

  • 1. Wind
  • 2. Rainfall and Flooding
  • 3. Storm Surge*
  • 4. Tornadoes

* Storm Surge kills more people than any other hurricane peril

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  • Intensity
  • Central pressure
  • Forward speed
  • Size
  • Angle of approach
  • Width and slope of continental shelf
  • Local coastal features

Factors Affecting Storm Surge

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Storm Surge vs Storm Tide

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Top 5 Most Vulnerable U.S. Cities

  • Tampa/St. Petersburg
  • Miami
  • New Orleans
  • Norfolk/ Virginia Beach
  • Houston/Galveston
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Katrina 2005

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Storm Surge Modeling

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SLOSH Model

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State-Wide Regional Evacuation Study

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State-Wide Regional Evacuation Study

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Evacuation Zones

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Base Scenarios

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Clearance Times

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Watches and Warnings

  • Tropical Storm Watch – Tropical Storm conditions are

possible within 48 hours.

  • Tropical Storm Warning – Tropical Storm conditions

are expected within 36 hours.

  • Hurricane Watch – Hurricane Conditions are possible

and the watch is issued 48 hours in advance of the anticipated onset of tropical storm-force winds.

  • Hurricane Warning – Hurricane Conditions are

expected and the warning is issued 36 hours in advance of the anticipated onset of tropical storm- force winds.

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P-Surge (probabilistic)

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Storm Action Lead Time (Salt)

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Questions Questions? Br Browar

  • ward County

d County Emergency Mana Emergency Management Division gement Division

(95 (954) 4) 83 831-3900 3900 Bob Bob H Hump umple le rhu rhumple@bro mple@broward.org ward.org (95 (954) 4) 83 831-3919 3919 www www.bro .broward ward.org .org/eme /emerge rgenc ncy ww www. w.bro broward.org/hu ward.org/hurri rrica cane ne