Moderate Risk Missouri  ·  Tornado / Missouri River Flooding

Marion County MO

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

6/ 10
Threat Score
Population
28
Area
438
sq miles
Primary Hazard
Tornado / Missouri River Flooding
FEMA Disasters
7
federally declared

Marion County MO in Missouri faces tornado / missouri river flooding risk across its 438 square mile area. Hannibal Mark Twain's hometown on the Mississippi faces serious flooding. Marion serves as the county seat and regional emergency coordination hub.

// 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 6 / 10    Moderate Risk
Primary Hazard Tornado / Missouri River Flooding
Secondary Hazard Severe Storm
FEMA Flood Zone Moderate
Federally Declared Disasters 7
Last Major Event 2019 Mississippi River Flooding
Event Frequency Annual

// Emergency Operations

Emergency Mgmt Phone (573) 769-2549
Emergency Shelters 3 designated facilities
Evacuation Routes State and US highways

// County Profile

County Marion County MO
State Missouri (MO)
Population 28
Area 438 sq miles
FEMA Region Moderate

// Other Missouri Counties