Critical Risk Mississippi  ·  Hurricane / Storm Surge

Harrison County MS

EMERGENCY PREPAREDNESS & DISASTER RISK PROFILE  ·  LAST UPDATED: Mar 2026

9/ 10
Threat Score
Population
208,989
Area
580
sq miles
Primary Hazard
Hurricane / Storm Surge
FEMA Disasters
68
federally declared

Harrison County on Mississippi's Gulf Coast was ground zero for Hurricane Katrina's catastrophic storm surge in 2005. Gulfport and Biloxi experienced surge heights of 28 feet — the highest ever recorded in the United States at the time. The surge traveled up to 6 miles inland, destroying virtually everything in its path. Over 230 people died in Harrison County alone during Katrina.

// Preparedness Recommendations

  • Evacuation routes inland should be identified in advance.
  • Store at least 72 hours of food and water.
  • Elevate critical belongings above flood level.
  • Have backup power ready in case of grid failure.

// Recommended Supplies

Essential gear for power outages, severe weather, and emergency situations in your area.

// Risk Intelligence

Threat Score 9 / 10    Critical Risk
Primary Hazard Hurricane / Storm Surge
Secondary Hazard Flooding
FEMA Flood Zone Zone VE (Critical Risk)
Federally Declared Disasters 68
Last Major Event Hurricane Katrina (2005)
Event Frequency Major event every 3–4 years

// Emergency Operations

Emergency Mgmt Phone (228) 865-4002
Emergency Shelters 22 designated facilities
Evacuation Routes I-10 West, I-10 East, US-49 North, US-90 East

// County Profile

County Harrison County MS
State Mississippi (MS)
Population 208,989
Area 580 sq miles
FEMA Region Zone VE (Critical Risk)

// Major Cities

Gulfport MS Biloxi MS

// Cities in This County

// Other Mississippi Counties

// Nearby Infrastructure Risks

Critical infrastructure facilities within or near this area that could affect civilian safety during emergencies, conflict, or infrastructure failures.

Keesler Air Force Base MS
Military Installation  ·  Biloxi, MS  ·  US Air Force  ·  25-mi risk zone
8/10 High
Pascagoula MS Refinery
Chemical Facility  ·  Pascagoula, MS  ·  Chevron  ·  10-mi risk zone
7/10 High

Infrastructure risk data is for emergency preparedness awareness. Facility locations are publicly known. Always follow official emergency guidance.