20declarations
14major disasters
6emergencies
1973first on record
2026latest
By hazard
Severe Storm7
Flood4
Winter Storm2
Tropical Storm2
Biological2
Hurricane1
Snowstorm1
Tornado1
By decade
31970s
31990s
42000s
22010s
82020s
Population: 17,952 in April 2020, 18,506 in July 2024 (Census Bureau estimates).
Declarations naming Johnson County
| Declared | Number | Title | Hazard | Programs | Federal aid |
|---|---|---|---|---|---|
| Feb 6, 2026 | DR-4898-TN | Severe Winter Storm | Winter Storm | IHPPA | $235.2 million |
| Jan 24, 2026 | EM-3635-TN | Severe Winter Storm | Winter Storm | PA | — |
| Apr 2, 2025 | EM-3625-TN | Severe Storms, Straight-Line Winds, Tornadoes, and Flooding | Severe Storm | PA | — |
| Oct 2, 2024 | DR-4832-TN | Tropical Storm Helene | Tropical Storm | IHPPAHM | $690.0 million |
| Sep 27, 2024 | EM-3620-TN | Tropical Storm Helene | Tropical Storm | PA | — |
| Apr 7, 2023 | DR-4701-TN | Severe Storms, Straight-Line Winds, and Tornadoes | Severe Storm | IHPPAHM | $53.0 million |
| Apr 2, 2020 | DR-4514-TN | COVID-19 Pandemic | Biological | IHPPAHM | $686.7 million |
| Mar 13, 2020 | EM-3473-TN | COVID-19 | Biological | PA | — |
| Apr 17, 2019 | DR-4427-TN | Severe Storms, Flooding, Landslides, and Mudslides | Flood | PAHM | $24.7 million |
| May 1, 2011 | DR-1974-TN | Severe Storms, Tornadoes, Straight-Line Winds, and Associated Flooding | Severe Storm | IHPPAHM | $67.7 million |
| Sep 5, 2005 | EM-3217-TN | Hurricane Katrina Evacuation | Hurricane | PA | $34.9 million |
| Oct 7, 2004 | DR-1568-TN | Severe Storms and Flooding | Severe Storm | PAHM | $6.2 million |
| Mar 20, 2003 | DR-1456-TN | Severe Storms and Flooding | Severe Storm | PAHM | $6.3 million |
| Aug 15, 2001 | DR-1387-TN | Severe Storms and Flooding | Severe Storm | IAPAHM | $4.4 million |
| Jan 13, 1998 | DR-1197-TN | Severe Storms and Flooding | Severe Storm | IAPA | — |
| Apr 14, 1994 | DR-1022-TN | Extensive Rainfall and Flash Flooding | Flood | IAPA | — |
| Mar 14, 1993 | EM-3095-TN | Severe Snowfall, Winter Storm | Snowstorm | PA | — |
| Nov 12, 1977 | DR-544-TN | Severe Storms & Flooding | Flood | IAPA | — |
| Apr 4, 1974 | DR-424-TN | Tornadoes | Tornado | IAPA | — |
| Mar 21, 1973 | DR-366-TN | Heavy Rains & Flooding | Flood | IAPA | — |