Williamson County, Tennessee

Williamson County has been named in 16 federal declarations. Statewide declarations for Tennessee (1) are listed on the state page.

16declarations 12major disasters 4emergencies 1974first on record 2026latest

By hazard

Severe Storm8

Winter Storm2

Tornado2

Biological2

Hurricane1

Flood1

31970s

31990s

32000s

12010s

62020s

Population: 247,777 in April 2020, 269,136 in July 2024 (Census Bureau estimates).

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	—
May 8, 2021	DR-4601-TN	Severe Storms, Tornadoes, and Flooding	Tornado	IHPPAHM	$23.7 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	—
May 4, 2010	DR-1909-TN	Severe Storms, Flooding, Straight-Line Winds, and Tornadoes	Severe Storm	IHPPAHM	$480.0 million
Feb 7, 2008	DR-1745-TN	Severe Storms, Tornadoes, Straight-Line Winds, and Flooding	Severe Storm	IHPPAHM	$22.6 million
Sep 5, 2005	EM-3217-TN	Hurricane Katrina Evacuation	Hurricane	PA	$34.9 million
May 8, 2003	DR-1464-TN	Severe Storms, Tornadoes, and Flooding	Severe Storm	IHPIAPAHM	$65.5 million
May 12, 1999	DR-1275-TN	Severe Storms, Tornadoes and Flooding	Severe Storm	IAPAHM	$6.2 million
Apr 20, 1998	DR-1215-TN	Severe Storms, Tornadoes and Flooding	Severe Storm	IAPA	—
Feb 28, 1994	DR-1010-TN	Severe Winter Ice Storm,flash Flooding	Severe Storm	PA	—
May 7, 1979	DR-585-TN	Severe Storms, Tornadoes & Flooding	Severe Storm	IAPA	—
Mar 22, 1975	DR-459-TN	Severe Storms & Flooding	Flood	IAPA	—
Apr 4, 1974	DR-424-TN	Tornadoes	Tornado	IAPA	—