16declarations
11major disasters
5emergencies
1991first on record
2026latest
By hazard
Severe Storm8
Biological2
Snowstorm2
Flood2
Winter Storm1
Hurricane1
By decade
31990s
82000s
12010s
42020s
Population: 161,780 in April 2020, 170,614 in July 2024 (Census Bureau estimates).
Declarations naming Johnson County
| Declared | Number | Title | Hazard | Programs | Federal aid |
|---|---|---|---|---|---|
| Jan 24, 2026 | EM-3641-IN | Severe Winter Storm | Winter Storm | PA | — |
| Apr 15, 2023 | DR-4704-IN | Severe Storms, Straight-Line Winds, and Tornadoes | Severe Storm | IHPPAHM | $17.2 million |
| Apr 3, 2020 | DR-4515-IN | COVID-19 Pandemic | Biological | IHPPAHM | $372.6 million |
| Mar 13, 2020 | EM-3456-IN | COVID-19 | Biological | PA | — |
| Apr 22, 2014 | DR-4173-IN | Severe Winter Storm and Snowstorm | Severe Storm | PAHM | $10.7 million |
| Jun 8, 2008 | DR-1766-IN | Severe Storms, Flooding, and Tornadoes | Severe Storm | IHPPAHM | $175.4 million |
| Sep 10, 2005 | EM-3238-IN | Hurricane Katrina Evacuation | Hurricane | PA | $2.1 million |
| Jan 21, 2005 | DR-1573-IN | Severe Winter Storms and Flooding | Severe Storm | IHPIAPAHM | $33.0 million |
| Jan 11, 2005 | EM-3197-IN | Snow | Snowstorm | PA | $5.8 million |
| Jun 3, 2004 | DR-1520-IN | Severe Storms, Tornadoes, and Flooding | Severe Storm | IHPIAPAHM | $9.6 million |
| Sep 5, 2003 | DR-1487-IN | Severe Storms, Tornadoes, and Flooding | Severe Storm | IHPIAHM | $8.9 million |
| Sep 25, 2002 | DR-1433-IN | Severe Storms and Tornadoes | Severe Storm | IAPAHM | $4.2 million |
| Jun 13, 2002 | DR-1418-IN | Severe Storms, Tornadoes and Flooding | Severe Storm | IAPAHM | $5.5 million |
| Jan 15, 1999 | EM-3135-IN | In-Winter Storm 12/23/98 | Snowstorm | PA | $9.8 million |
| Apr 2, 1996 | DR-1109-IN | Blizzard of 96 | Flood | PA | — |
| Jan 5, 1991 | DR-891-IN | Severe Storms & Flooding | Flood | IAPA | — |