States › Missouri › Atchison County

Atchison County, Missouri

Recorded hazard history: storm events since 1950, federal disaster declarations since 1953, flood insurance claims since 1978, and FEMA's risk index.

FIPS 29005 · 5,234 residents (2021) · 547 sq mi · dominant hazard Hail

Hail · 162Tornado · 19Flood · 47Wind · 144Winter · 46

Atchison County within Missouri. Dots: HailTornadoFloodWind event locations in the kept record. Boundaries: US Census Bureau.

NCEI notes that Storm Data is compiled from a variety of sources including the National Weather Service, other federal, state and local agencies, the media and the public; that property and crop damage figures are estimates; and that some events are recorded by NWS forecast zone rather than by county. FEMA notes that NFIP claim records are redacted and aggregated to protect the privacy of policyholders. NCEI storm records through 30 Jun 2026; OpenFEMA declarations refreshed 29 Sep 2026; NFIP claims as of 8 Sep 2026.

Between 1950 and 2026, NCEI recorded 462 storm events in Atchison County, Missouri, led by hail.

That is 84.4 events per 100 square miles, below the Missouri figure of 106.7, and 882.7 per 10,000 residents against 118.9 statewide.

10 events fall in the 12 months to 30 Jun 2026. NCEI attributes 0 deaths and 0 injuries to events in the county, with property damage estimated at $7.2M and crop damage at $1.7M.

FEMA has designated the county in 23 federal disaster declarations since 1953; the most recent is Covid-19 Pandemic (major disaster, 26 Mar 2020).

National Flood Insurance Program policyholders in the county filed 146 claims since 1978, of which 112 were paid, totalling $5.0M (about $45K per paid claim). FEMA counts 7 residential flood policies in force.

FEMA's National Risk Index rates the county's overall risk as "Very Low" and its expected annual loss as "Very Low" ($6.9M a year across 18 hazards).

10events, last 12 monthsto 30 Jun 2026

462events since 19500 deaths, 0 injuries recorded

23disaster declarationslast 26 Mar 2020

146NFIP flood claims$5.0M paid

Compared with Missouri and the United States

Measure	Atchison County	Missouri	US
Recorded events since 1950	462	73,339	1,977,440
Events per 100 square miles	84.4	106.7	56.0
Events per 10,000 residents	882.7	118.9	59.6
Events in the last 12 months	10	1,920	62,008
Deaths recorded by NCEI	0	1,009	26,435
Property damage (NCEI estimates)	$7.2M	$12B	$575B
NFIP claims per 1,000 residents	27.9	8.3	8.1
Average paid NFIP claim	$45K	$23K	$43K
Claims per 100 policies in force, last 10 years	300.0	51.0	16.1

County-recorded events plus zone-recorded events whose forecast zone is named for the county. State and US rows include events recorded only by forecast zone. Rates use 2021 Census population and land area.

Events by decade

Tornado: 4Wind: 1

Hail: 2Tornado: 4Wind: 6

Hail: 4Wind: 9

Hail: 6Wind: 6

Hail: 26Tornado: 1Flood: 17Wind: 13Winter: 3Heat: 1Cold: 1

Hail: 53Tornado: 5Flood: 17Wind: 34Winter: 20Heat: 12Cold: 2Drought: 1

Hail: 63Tornado: 4Flood: 13Wind: 49Winter: 18Heat: 1Cold: 1Drought: 11

Hail: 8Tornado: 1Wind: 26Winter: 5Heat: 1Cold: 6Drought: 6Other: 1

51950s121960s131970s121980s621990s1442000s1602010s542020s

Recorded events in Atchison County by decade and hazard group. HailTornadoFloodWindWinterHeatColdDroughtOther NCEI recorded only tornadoes, hail and thunderstorm wind before 1996.

Trend: 271 events in the 20 years to 2025 against 143 in the 20 years before. Reporting practice changed in 1996 and again with automated reports in the 2000s, so decade totals measure the record as much as the weather.

Events by type

Hail162

Wind144

Flood47

Winter46

Tornado19

Drought18

Heat15

Cold10

Other1

Hazard	Events	Deaths	Share of state's events
■ Hail	162	—	0.8%	detail
■ Wind	144	—	0.7%	detail
■ Flood	47	—	0.4%	detail
■ Winter	46	—	0.7%	detail
■ Tornado	19	—	0.6%	detail
■ Drought	18	—	0.7%
■ Heat	15	—	0.4%
■ Cold	10	—	0.6%
■ Other	1	—	0.1%

Hazard pages exist for hail, tornado, flood, wind and winter where the county has at least 10 recorded events. "Other" covers heavy rain, debris flow, dust, funnel clouds and similar reports.

Largest recorded events

Date	Event type	Group	Magnitude	Property damage	Crop damage	Deaths	Injuries	Geography
6 May 2007	Flood	Flood	—	$5.0M	$1.0M	—	—	County
25 Jun 1994	Hail	Hail	2.50 in	$500K	$50K	—	—	County
2 Sep 1993	Hail	Hail	2.75 in	$500K	—	—	—	County
23 Jul 1997	Hail	Hail	1.75 in	—	$500K	—	—	County
5 Apr 1954	Tornado	Tornado	F4	$250K	—	—	—	County
5 Jun 2008	Tornado	Tornado	EF0	$210K	—	—	—	County
9 Mar 2019	Flood	Flood	—	$100K	$100K	—	—	County
10 Apr 1997	Heavy Snow	Winter	—	$100K	—	—	—	Forecast zone
10 Dec 2007	Ice Storm	Winter	—	$100K	—	—	—	Forecast zone

Ranked by deaths, then injuries, then NCEI's damage estimate. Deaths and injuries are NCEI counts (direct plus indirect); no personal details are recorded here.

Federal disaster declarations

Declared	Number	Type	Incident	Title	Programs
26 Mar 2020	DR-4490	Major disaster	Biological	Covid-19 Pandemic	Individual assistance, Public assistance
13 Mar 2020	EM-3482	Emergency	Biological	Covid-19	Public assistance
9 Jul 2019	DR-4451	Major disaster	Severe Storm	Severe Storms, Tornadoes, And Flooding	Individual assistance, Public assistance
20 May 2019	DR-4435	Major disaster	Flood	Severe Storms, Straight-Line Winds, And Flooding	Public assistance
7 Aug 2015	DR-4238	Major disaster	Severe Storm	Severe Storms, Tornadoes, Straight-Line Winds, And Flooding	Public assistance
31 Oct 2014	DR-4200	Major disaster	Severe Storm	Severe Storms, Tornadoes, Straight-Line Winds, And Flooding	Public assistance
12 Aug 2011	DR-4012	Major disaster	Flood	Flooding	Individual assistance, Public assistance
30 Jun 2011	EM-3325	Emergency	Flood	Flooding	Public assistance
3 Feb 2011	EM-3317	Emergency	Severe Storm	Severe Winter Storm	Public assistance
17 Aug 2010	DR-1934	Major disaster	Severe Storm	Severe Storms, Flooding, And Tornadoes	Public assistance
30 Jan 2009	EM-3303	Emergency	Severe Ice Storm	Severe Winter Storm	Public assistance
25 Jun 2008	DR-1773	Major disaster	Severe Storm	Severe Storms And Flooding	Public assistance
27 Dec 2007	DR-1736	Major disaster	Severe Ice Storm	Severe Winter Storms	Public assistance
12 Dec 2007	EM-3281	Emergency	Severe Ice Storm	Severe Winter Storms	Public assistance
11 Jun 2007	DR-1708	Major disaster	Severe Storm	Severe Storms And Flooding	Individual assistance, Public assistance
10 Sep 2005	EM-3232	Emergency	Hurricane	Hurricane Katrina Evacuation	Public assistance
2 Jun 1995	DR-1054	Major disaster	Severe Storm	Severe Storms, Tornadoes, Hail, Flooding	Individual assistance, Public assistance
9 Jul 1993	DR-995	Major disaster	Flood	Severe Storms & Flooding	Individual assistance, Public assistance
21 Jun 1984	DR-713	Major disaster	Flood	Severe Storms & Flooding	Public assistance
10 Jun 1974	DR-439	Major disaster	Flood	Severe Storms & Flooding	Individual assistance, Public assistance
1 Nov 1973	DR-407	Major disaster	Flood	Severe Storms & Flooding	Individual assistance, Public assistance
19 Apr 1973	DR-372	Major disaster	Severe Storm	Heavy Rains, Tornadoes & Flooding	Individual assistance, Public assistance
27 Jul 1965	DR-203	Major disaster	Flood	Severe Storms & Flooding	Individual assistance, Public assistance

Declarations in which FEMA designated this county, from the OpenFEMA Disaster Declarations Summaries (v2). DR: major disaster; EM: emergency; FM: fire management assistance. Programs show whether individual or public assistance was made available.

Flood insurance claims

197820022026

NFIP claims by year of loss in Atchison County, 1978 to 2026 (hover for the amount paid).

Claims since 1978146

Paid claims112

Total paid$5.0M

Average paid claim$45K

Repetitive-loss properties121 severe

Residential policies in force70.2% of 3,688 structures

Year of loss	Claims	Paid claims	Amount paid	Average paid
2019	21	19	$2,295,487	$120,815
2015	1	1	$1,519	$1,519
2014	1	1	$1,047	$1,047
2013	1	0	$0	—
2011	47	40	$2,047,009	$51,175
2010	2	2	$38,714	$19,357
2008	12	9	$63,265	$7,029
2007	4	3	$56,842	$18,947
1993	53	33	$483,075	$14,639
1989	1	1	$700	$700
1987	2	2	$5,845	$2,922
1982	1	1	$823	$823

OpenFEMA NFIP claims (v3, as of 8 Sep 2026), aggregated by year of loss; amounts are building, contents and increased-cost-of-compliance payments as recorded. Repetitive-loss counts from the NFIP Multiple Loss Properties file (2 Aug 2026); policies in force from the NFIP Residential Penetration Rates file (3 Aug 2026).

National Risk Index

Overall riskVery Lowscore 21.7 of 100

Expected annual loss$6.9MVery Low

Social vulnerabilityRelatively Moderate

Community resilienceRelatively High

Hazard (NRI)	Risk rating	Expected annual loss
Inland flooding	Very Low	$2,690,254
Drought	Relatively Moderate	$1,514,074
Tornado	Relatively Low	$897,058
Heat wave	Relatively Low	$588,875
Cold wave	Relatively Low	$552,469
Hail	Relatively Low	$345,305
Strong wind	Relatively Low	$187,277
Lightning	Very Low	$42,833
Ice storm	Relatively Low	$24,585
Winter weather	Relatively Low	$21,400
Earthquake	Very Low	$13,325
Wildfire	Very Low	$11,745
Landslide	Relatively Low	$9,992

FEMA National Risk Index, December 2025 release. Ratings are FEMA's relative comparison of counties; expected annual loss is FEMA's modelled estimate of average yearly building, population and agriculture loss. See how to read the NRI.

Hurricane and tropical storm passes

No HURDAT2 track at tropical-storm strength passes within 100 miles of the county's centre point (through the 2025 season).

ZIP codes with flood claims

64446 51
64482 45
64496 27
64491 21

ZIP codes whose NFIP claims carry this county's code, with the number of claims. Five or more claims are needed for a ZIP page to be indexed.

Questions and answers

How often does it hail in Atchison County, MO?

NCEI records 162 hail events in Atchison County since 1950, in 40 different years; that is about 2.1 recorded events a year. 39 reports were golf-ball size (1.75 in) or larger.

Has Atchison County had a tornado?

Yes. NCEI records 19 tornadoes in Atchison County since 1950, 4 of them rated (E)F2 or stronger. Tornado deaths recorded: 0.

When was the last federal disaster declaration for Atchison County?

26 Mar 2020: Covid-19 Pandemic, a major disaster declaration for biological. The county appears in 23 declarations since 1953.

How many flood insurance claims have been filed in Atchison County, and how much was paid?

146 NFIP claims since 1978, 112 of them paid, for $5.0M in total. FEMA publishes these figures redacted and aggregated; individual properties are not identified.

Is Atchison County in the National Risk Index's high-risk band?

FEMA's National Risk Index (December 2025) rates the county "Very Low" for overall risk, "Very Low" for expected annual loss, "Relatively Moderate" for social vulnerability and "Relatively High" for community resilience. These ratings are FEMA's relative comparison across all US counties.

How does Atchison County compare with the rest of Missouri?

84.4 recorded events per 100 square miles against 106.7 statewide, and 27.9 NFIP claims per 1,000 residents against 8.3. The comparison table on this page shows each measure beside the state and national figures.

Provenance

Storm events: NOAA NCEI Storm Events Database, yearly details files through 30 Jun 2026 (public domain). Declarations: OpenFEMA DisasterDeclarationsSummaries v2, refreshed 29 Sep 2026. Flood claims: OpenFEMA NfipClaims v3 as of 8 Sep 2026; NfipMultipleLossProperties v1 (2 Aug 2026); NfipResidentialPenetrationRates v1 (3 Aug 2026). Risk index: FEMA National Risk Index, December 2025. Hurricane tracks: NHC HURDAT2 through 2025. Population and area: US Census Bureau, 2021 vintage. Built 30 Sep 2026; see the methodology and corrections pages. Hazard hubs: Hail · Tornado · Flood · Wind · Winter.