Every federal disaster in O'Fallon since 1957

Each square is a disaster or emergency declaration by the President or FEMA that covered St. Charles County. Declarations make federal aid available after hurricanes, floods, storms, fires and other events, so this is a record of the big ones.

Declarations: 32since 1957
Major disasters: 23the most serious kind
Since 2000: 18declarations
Most recent: 2022Severe Storms and Flooding

Severe storms and tornadoes (13)Floods (12)Winter storms (3)Biological (COVID-19) (2)Other (1)Hurricanes and tropical storms (1)

FEMA's National Risk Index rates St. Charles County's overall natural hazard risk relatively moderate, led by strong wind, tornado and inland flooding. The history above shows what has actually happened; the risk index estimates what is likely.

All declarations

Declared	Event	Type	FEMA number
Aug 8, 2022	Severe Storms and Flooding	Major disaster	DR-4665
Mar 26, 2020	COVID-19 Pandemic	Major disaster	DR-4490
Mar 13, 2020	COVID-19	Emergency	EM-3482
Jul 9, 2019	Severe Storms, Tornadoes, and Flooding	Major disaster	DR-4451
Jan 21, 2016	Severe Storms, Tornadoes, Straight-Line Winds, and Flooding	Major disaster	DR-4250
Jan 2, 2016	Severe Storms, Tornadoes, Straight-Line Winds, and Flooding	Emergency	EM-3374
Jul 18, 2013	Severe Storms, Straight-Line Winds, Tornadoes, and Flooding	Major disaster	DR-4130
Jun 30, 2011	Flooding	Emergency	EM-3325
Feb 3, 2011	Severe Winter Storm	Emergency	EM-3317
Jan 30, 2009	Severe Winter Storm	Emergency	EM-3303
Nov 13, 2008	Severe Storms, Flooding, and A Tornado	Major disaster	DR-1809
Jun 25, 2008	Severe Storms and Flooding	Major disaster	DR-1773
Mar 19, 2008	Severe Storms and Flooding	Major disaster	DR-1749
Dec 12, 2007	Severe Winter Storms	Emergency	EM-3281
Jan 15, 2007	Severe Winter Storms and Flooding	Major disaster	DR-1676
Jul 21, 2006	Severe Storms	Emergency	EM-3267
Sep 10, 2005	Hurricane Katrina Evacuation	Emergency	EM-3232
May 12, 2000	Severe Thunderstorms and Flash Flooding	Major disaster	DR-1328
Jun 2, 1995	Severe Storms, Tornadoes, Hail, Flooding	Major disaster	DR-1054
Apr 21, 1994	Severe Storms, Tornadoes, Flooding	Major disaster	DR-1023
Jul 9, 1993	Severe Storms & Flooding	Major disaster	DR-995
May 11, 1993	Severe Storms & Flooding	Major disaster	DR-989
Oct 14, 1986	Severe Storms & Flooding	Major disaster	DR-779
Dec 10, 1982	Severe Storms and Flooding	Major disaster	DR-672
Apr 21, 1979	Tornadoes, Torrential Rain & Flooding	Major disaster	DR-579
Sep 24, 1976	Drought	Emergency	EM-3017
Apr 19, 1973	Heavy Rains, Tornadoes & Flooding	Major disaster	DR-372
Jun 14, 1965	Flooding	Major disaster	DR-198
Jul 8, 1964	Severe Storms & Flooding	Major disaster	DR-173
May 27, 1961	Floods	Major disaster	DR-114
Apr 20, 1960	Floods	Major disaster	DR-100
May 22, 1957	Tornadoes & Floods	Major disaster	DR-75

Frequently asked questions

How many federal disasters has O'Fallon had?

Since 1957, the federal government has issued 32 disaster or emergency declarations covering St. Charles County, including 23 major disaster declarations. 18 of them came in 2000 or later.

What was the most recent federal disaster in O'Fallon?

Severe Storms and Flooding (Major disaster, declared August 8, 2022).

What kinds of disasters hit O'Fallon most often?

By FEMA incident type: flood (12), severe storm (11), severe ice storm (3) and tornado (2).

New to O'Fallon? The city profile covers flood maps and emergency alerts, and the risk summary shows FEMA's hazard ratings.

Source: FEMA, OpenFEMA Disaster Declarations Summaries (v2), downloaded October 18, 2026. We list declarations that named St. Charles County, plus early statewide declarations from before FEMA designated individual counties. "Major disaster" declarations bring the widest federal aid; "emergency" declarations cover shorter-term help; "fire management" declarations help pay to fight large wildfires.