Disaster-history hazard lens

Tornado history by county

Tornadoes, funnel clouds, and waterspouts. Compare official county histories below while keeping FEMA administrative declarations separate from NOAA observed-event reports.

Data updated Aug 21, 2026 · Current conditions: Live Dashboard →

Administrative records

FEMA declaration history

Federal administrative declarations that include a county designation and map to this hazard category. A declaration is a government action, not a physical-event census.

22 counties have a positive tornado count in this source.

Coverage: Jan 1, 1964 – Aug 21, 2026

Rankings compare only this source and exact coverage window. Equal counts share a rank.

Tornado fema declaration history by county
Rank	County	Unique declarations
1	Pulaski County, Arkansas	4
2	Douglas County, Nebraska	3
3	Jefferson County, Alabama	2
3	Fulton County, Georgia	2
3	Franklin County, Ohio	2
3	Oklahoma County, Oklahoma	2
7	El Paso County, Colorado	1
7	Hartford County, Connecticut	1
7	Cook County, Illinois	1
7	Polk County, Iowa	1
7	Johnson County, Kansas	1
7	Jefferson County, Kentucky	1
7	East Baton Rouge Parish, Louisiana	1
7	Kent County, Michigan	1
7	Hennepin County, Minnesota	1
7	St. Louis County, Missouri	1
7	Kings County, New York	1
7	Wake County, North Carolina	1
7	Shelby County, Tennessee	1
7	Harris County, Texas	1
7	Salt Lake County, Utah	1
7	Laramie County, Wyoming	1

Observed-event reports

NOAA observed-event history

Distinct NOAA Storm Events records explicitly coded to a county and mapped to this hazard category. Forecast-zone and marine-zone records are excluded from county totals.

51 counties have a positive tornado count in this source.

Coverage: Jan 1, 1996 – May 31, 2026

Rankings compare only this source and exact coverage window. Equal counts share a rank.

Tornado noaa observed-event history by county
Rank	County	County-event records
1	Miami-Dade County, Florida	246
2	Harris County, Texas	158
3	Cass County, North Dakota	90
4	Maricopa County, Arizona	75
4	Pulaski County, Arkansas	75
6	Oklahoma County, Oklahoma	72
6	Laramie County, Wyoming	72
8	Jefferson County, Alabama	71
9	Fresno County, California	64
9	Harrison County, Mississippi	64
11	Polk County, Iowa	60
12	El Paso County, Colorado	59
13	Honolulu County, Hawaii	57
14	Cook County, Illinois	51
15	St. Louis County, Missouri	38
16	Los Angeles County, California	33
17	Hennepin County, Minnesota	30
17	Minnehaha County, South Dakota	30
19	Jefferson County, Kentucky	29
20	East Baton Rouge Parish, Louisiana	26
21	Fulton County, Georgia	25
22	Montgomery County, Maryland	24
23	Yellowstone County, Montana	23
24	Kent County, Michigan	22
24	Wake County, North Carolina	22
26	New Castle County, Delaware	21
27	Greenville County, South Carolina	20
28	Johnson County, Kansas	19
28	Franklin County, Ohio	19
28	Fairfax County, Virginia	19
31	Marion County, Indiana	15
31	Douglas County, Nebraska	15
33	Wayne County, Michigan	14
34	Ventura County, California	12
34	Ada County, Idaho	12
34	King County, Washington	12
34	Kanawha County, West Virginia	12
38	Cumberland County, Maine	11
38	Shelby County, Tennessee	11
40	Providence County, Rhode Island	10
40	Salt Lake County, Utah	10
42	Bernalillo County, New Mexico	9
42	Multnomah County, Oregon	9
44	Hartford County, Connecticut	7
44	Clark County, Nevada	7
44	Philadelphia County, Pennsylvania	7
47	Milwaukee County, Wisconsin	6
48	Middlesex County, Massachusetts	5
48	Kings County, New York	5
50	Bergen County, New Jersey	4
51	Hillsborough County, New Hampshire	2

How to interpret this hazard lens

Hazard categories normalize source labels into a shared taxonomy; source definitions and reporting practices still differ.
FEMA declarations reflect federal administrative actions and do not inventory every damaging local event.
NOAA totals include only distinct county-coded Storm Events records; forecast-zone and marine-zone records are excluded.
Only counties with a positive count for this category appear in each source table. Open a county profile for its complete source disclosures and preparedness context.