Low Risk Indiana  ·  Tornado / Flash Flooding

Johnson County IN

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

5/ 10
Threat Score
Population
156
Area
320
sq miles
Primary Hazard
Tornado / Flash Flooding
FEMA Disasters
6
federally declared

Johnson County IN in Indiana faces tornado / flash flooding risk across its 320 square mile area. Franklin serves this fast-growing Indianapolis southern suburb county. Johnson 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 5 / 10    Low Risk
Primary Hazard Tornado / Flash Flooding
Secondary Hazard Severe Storm
FEMA Flood Zone Low
Federally Declared Disasters 6
Last Major Event 2019 Tornado
Event Frequency Annual

// Emergency Operations

Emergency Mgmt Phone (317) 736-3708
Emergency Shelters 2 designated facilities
Evacuation Routes State and US highways

// County Profile

County Johnson County IN
State Indiana (IN)
Population 156
Area 320 sq miles
FEMA Region Low

// Major Cities

Greenwood IN

// Cities in This County

// Other Indiana Counties