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Johnson County, Kansas
Recorded hazard history: storm events since 1950, federal disaster declarations since 1953, flood insurance claims since 1978, and FEMA's risk index.
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 1 Oct 2026; NFIP claims as of 8 Sep 2026.
The NCEI record lists 1,514 events for Johnson County, Kansas, between 1950 and 2026; hail account for the largest share.
That is 319.7 events per 100 square miles, above the Kansas figure of 115.0, and 24.7 per 10,000 residents against 320.3 statewide.
55 events fall in the 12 months to 30 Jun 2026. NCEI attributes 5 deaths and 31 injuries to events in the county, with property damage estimated at $27M and crop damage at $1.0M.
FEMA has designated the county in 12 federal disaster declarations since 1953; the most recent is Severe Storms, Straight-Line Winds, Tornadoes, And Flooding (major disaster, 26 Oct 2023).
National Flood Insurance Program policyholders in the county filed 1,155 claims since 1978, of which 887 were paid, totalling $13M (about $15K per paid claim). FEMA counts 544 residential flood policies in force.
FEMA's National Risk Index rates the county's overall risk as "Relatively High" and its expected annual loss as "Relatively High" ($257M a year across 18 hazards).
Compared with Kansas and the United States
| Measure | Johnson County | Kansas | US |
|---|---|---|---|
| Recorded events since 1950 | 1,514 | 94,007 | 1,977,440 |
| Events per 100 square miles | 319.7 | 115.0 | 56.0 |
| Events per 10,000 residents | 24.7 | 320.3 | 59.6 |
| Events in the last 12 months | 55 | 2,357 | 62,008 |
| Deaths recorded by NCEI | 5 | 475 | 26,435 |
| Property damage (NCEI estimates) | $27M | $5.3B | $575B |
| NFIP claims per 1,000 residents | 1.9 | 2.7 | 8.1 |
| Average paid NFIP claim | $15K | $19K | $43K |
| Claims per 100 policies in force, last 10 years | 25.0 | 15.9 | 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
Trend: 861 events in the 20 years to 2025 against 398 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
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 |
|---|---|---|---|---|---|---|---|---|
| 4 Oct 1998 | Flash Flood | Flood | — | $8.0M | — | 2 | — | County |
| 26 May 1991 | Thunderstorm Wind | Wind | 75 mph | — | — | 1 | — | County |
| 31 Aug 2003 | Flash Flood | Flood | — | — | — | 1 | — | County |
| 31 Jan 2014 | Winter Weather | Winter | — | — | — | 1 | — | Forecast zone |
| 22 Sep 1993 | Hail | Hail | 1.75 in | $50K | — | — | 12 | County |
| 19 Apr 1966 | Tornado | Tornado | F3 | $2.5M | — | — | 4 | County |
| 8 Jun 1995 | Thunderstorm Wind | Wind | 0 mph | — | — | — | 4 | County |
| 21 Jun 1957 | Tornado | Tornado | F1 | $250K | — | — | 2 | County |
| 9 Jul 1969 | Tornado | Tornado | F2 | $250K | — | — | 2 | County |
| 16 May 1995 | Tornado | Tornado | F1 | $10K | — | — | 2 | County |
| 22 May 1952 | Tornado | Tornado | F4 | $250K | — | — | 1 | County |
| 31 May 1980 | Tornado | Tornado | F2 | $250K | — | — | 1 | County |
| 23 Sep 1986 | Thunderstorm Wind | Wind | 60 mph | — | — | — | 1 | County |
| 8 Jun 1995 | Thunderstorm Wind | Wind | 0 mph | — | — | — | 1 | County |
| 15 Dec 2021 | High Wind | Wind | 64 mph | — | — | — | 1 | Forecast zone |
| 30 Jan 2002 | Ice Storm | Winter | — | $5.0M | — | — | — | Forecast zone |
| 4 May 1977 | Tornado | Tornado | F3 | $2.5M | — | — | — | County |
| 21 Sep 1993 | Hail | Hail | 2.75 in | $500K | $500K | — | — | County |
| 22 Sep 1993 | Hail | Hail | 1.75 in | $50K | $500K | — | — | County |
| 30 Mar 1993 | Tornado | Tornado | F1 | $500K | — | — | — | County |
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 Oct 2023 | DR-4747 | Major disaster | Severe Storm | Severe Storms, Straight-Line Winds, Tornadoes, And Flooding | Public assistance |
| 29 Mar 2020 | DR-4504 | Major disaster | Biological | Covid-19 Pandemic | Individual assistance, Public assistance |
| 13 Mar 2020 | EM-3481 | Emergency | Biological | Covid-19 | Public assistance |
| 7 Nov 2017 | DR-4347 | Major disaster | Severe Storm | Severe Storms, Straight-Line Winds, And Flooding | Public assistance |
| 12 Dec 2007 | EM-3282 | Emergency | Severe Storm | Severe Winter Storms | Public assistance |
| 10 Sep 2005 | EM-3236 | Emergency | Hurricane | Hurricane Katrina Evacuation | Public assistance |
| 6 Feb 2002 | DR-1402 | Major disaster | Severe Ice Storm | Severe Winter Ice Storm | Individual assistance, Public assistance |
| 5 Nov 1998 | DR-1258 | Major disaster | Severe Storm | Ks-Flooding 10/31/98 | Individual assistance |
| 14 Oct 1998 | DR-1254 | Major disaster | Severe Storm | Severe Storms, Flooding And Tornadoes | Individual assistance, Public assistance |
| 22 Jul 1993 | DR-1000 | Major disaster | Flood | Severe Storms & Flooding | Individual assistance |
| 20 Sep 1977 | DR-539 | Major disaster | Flood | Severe Storms & Flooding | Individual assistance, Public assistance |
| 15 Jul 1969 | DR-267 | Major disaster | Tornado | Tornadoes, 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
| Year of loss | Claims | Paid claims | Amount paid | Average paid |
|---|---|---|---|---|
| 2025 | 13 | 9 | $516,582 | $57,398 |
| 2024 | 11 | 5 | $422,868 | $84,574 |
| 2022 | 1 | 1 | $6,331 | $6,331 |
| 2021 | 2 | 0 | $0 | — |
| 2020 | 3 | 1 | $46,246 | $46,246 |
| 2019 | 4 | 1 | $3,538 | $3,538 |
| 2018 | 2 | 2 | $6,841 | $3,420 |
| 2017 | 100 | 84 | $2,636,802 | $31,391 |
| 2016 | 10 | 5 | $225,187 | $45,037 |
| 2015 | 5 | 4 | $19,816 | $4,954 |
| 2014 | 2 | 1 | $4,372 | $4,372 |
| 2013 | 25 | 22 | $570,100 | $25,914 |
| 2012 | 3 | 2 | $22,447 | $11,223 |
| 2011 | 1 | 0 | $0 | — |
| 2010 | 41 | 32 | $626,786 | $19,587 |
| 2008 | 17 | 14 | $198,866 | $14,205 |
| 2007 | 7 | 4 | $14,952 | $3,738 |
| 2006 | 1 | 1 | $1,487 | $1,487 |
| 2004 | 10 | 9 | $61,274 | $6,808 |
| 2003 | 7 | 4 | $17,077 | $4,269 |
| 2002 | 1 | 0 | $0 | — |
| 2001 | 10 | 7 | $43,516 | $6,217 |
| 1999 | 11 | 9 | $106,979 | $11,887 |
| 1998 | 140 | 125 | $3,345,173 | $26,761 |
| 1996 | 3 | 1 | $9,198 | $9,198 |
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
| Hazard (NRI) | Risk rating | Expected annual loss |
|---|---|---|
| Inland flooding | $110,222,051 | |
| Tornado | $55,396,823 | |
| Cold wave | $30,601,919 | |
| Heat wave | $26,726,843 | |
| Hail | $14,848,442 | |
| Winter weather | $6,028,766 | |
| Ice storm | $5,186,080 | |
| Lightning | $5,066,627 | |
| Earthquake | $1,807,312 | |
| Strong wind | $758,396 | |
| Wildfire | $137,636 | |
| Drought | $18,044 | |
| Landslide | $8,032 |
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
- 66205 196
- 66207 188
- 66208 161
- 66206 101
- 66212 97
- 66203 86
- 66202 64
- 66204 48
- 66209 33
- 66062 29
- 66061 28
- 66224 22
- 66210 18
- 66215 16
- 66218 15
- 66085 13
- 66030 9
- 66216 7
- 66220 6
- 66223 5
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 Johnson County, KS?
NCEI records 657 hail events in Johnson County since 1950, in 67 different years; that is about 8.5 recorded events a year. 141 reports were golf-ball size (1.75 in) or larger.
Has Johnson County had a tornado?
Yes. NCEI records 45 tornadoes in Johnson County since 1950, 8 of them rated (E)F2 or stronger. Tornado deaths recorded: 0.
When was the last federal disaster declaration for Johnson County?
26 Oct 2023: Severe Storms, Straight-Line Winds, Tornadoes, And Flooding, a major disaster declaration for severe storm. The county appears in 12 declarations since 1953.
How many flood insurance claims have been filed in Johnson County, and how much was paid?
1,155 NFIP claims since 1978, 887 of them paid, for $13M in total. FEMA publishes these figures redacted and aggregated; individual properties are not identified.
Is Johnson County in the National Risk Index's high-risk band?
FEMA's National Risk Index (December 2025) rates the county "Relatively High" for overall risk, "Relatively High" for expected annual loss, "Very Low" for social vulnerability and "Relatively High" for community resilience. These ratings are FEMA's relative comparison across all US counties.
How does Johnson County compare with the rest of Kansas?
319.7 recorded events per 100 square miles against 115.0 statewide, and 1.9 NFIP claims per 1,000 residents against 2.7. 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 1 Oct 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 1 Oct 2026; see the methodology and corrections pages. Hazard hubs: Hail · Tornado · Flood · Wind · Winter.