Johnson County TN in Tennessee faces tornado / flash flooding risk across its 298 square mile area. Mountain City in extreme northeast Tennessee faces serious Helene flood damage. 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.
- Emergency Food Supplies
- Water Filtration & Storage
- Backup Generator
- Solar Backup Power
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// Risk Intelligence
| Threat Score | 5 / 10 Low Risk |
| Primary Hazard | Tornado / Flash Flooding |
| Secondary Hazard | Winter Storm |
| FEMA Flood Zone | Low |
| Federally Declared Disasters | 6 |
| Last Major Event | Helene 2024 |
| Event Frequency | Annual |
// Emergency Operations
| Emergency Mgmt Phone | (423) 727-9696 |
| Emergency Shelters | 2 designated facilities |
| Evacuation Routes | State and US highways |
// County Profile
| County | Johnson County TN |
| State | Tennessee (TN) |
| Population | 18 |
| Area | 298 sq miles |
| FEMA Region | Low |
// Other Tennessee Counties
Shelby County TN
Tornado / Severe Storm
7/10
High
Benton County TN
Tornado / New Madrid Earthquake
6/10
Moderate
Henderson County TN
Tornado / New Madrid Earthquake
6/10
Moderate
Gibson County TN
Tornado / New Madrid Earthquake
6/10
Moderate
Henry County TN
Tornado / New Madrid Earthquake
6/10
Moderate
Stewart County TN
Tornado / New Madrid Earthquake
6/10
Moderate