Enter any address in Harrison County, Missouri to see its FEMA flood zone
Flash flooding from thunderstorms is the dominant flood character in Harrison County. Between 1993 and 2023, NOAA Storm Events data recorded 17 flash flood events compared to 3 general flood events. For example, storms brought heavy rain and flooding to portions of northwest and north-central Missouri in June 2025. Earlier, in May 2019, widespread severe weather across northern Missouri caused flash flooding.
National Flood Insurance Program (NFIP) claims data indicates that properties in Zone A have experienced flooding, with an average payout of $21,255 for 5 claims, often involving water depths around 0.4 feet. Homeowners in areas prone to flash flooding, particularly those located in Zone A or near waterways, should pay the most attention to flood risk.
Summary generated from NOAA storm narratives and NFIP claim data for this county. Not predictive.
7 NOAA storm reports from this county describe what happened, in the words of the meteorologists who were there.
Harrison County, Missouri has recorded 20 flood-related events since 1996 according to NOAA's Storm Events Database, including 17 flash floods and 3 river or area floods. The county has received 18 federal disaster declarations, 2 of which involved flooding or coastal storms. Enter any address above to check its FEMA flood zone designation.
FEMA Disaster Declarations (1973–2020)
Source: OpenFEMA Disaster Declarations Summaries.
| Declaration | Type | Date |
|---|---|---|
| Covid-19 | Biological | Jan 20, 2020 |
| Covid-19 Pandemic | Biological | Jan 20, 2020 |
| Severe Storms, Tornadoes, And Flooding | Severe Storm | Apr 29, 2019 |
| Severe Storms, Tornadoes, Straight-line Winds, And Flooding | Severe Storm | May 15, 2015 |
| Severe Storms, Tornadoes, Straight-line Winds, And Flooding | Severe Storm | Sep 9, 2014 |
| Severe Winter Storm | Severe Storm | Jan 31, 2011 |
| Severe Storms, Flooding, And Tornadoes | Severe Storm | Jun 12, 2010 |
| Severe Winter Storm | Severe Ice Storm | Jan 26, 2009 |
| Severe Storms And Flooding | Severe Storm | Jun 1, 2008 |
| Severe Winter Storms | Severe Ice Storm | Dec 8, 2007 |
NOAA Storm Events Database (1996–2025)
Source: NOAA National Weather Service Storm Events Database.
| Type | Date | Damage |
|---|---|---|
| Flash Flood | Jun 24, 2025 | 0.00K |
| Flash Flood | Jun 24, 2021 | 0.00K |
| Flood | Sep 29, 2019 | 0.00K |
| Flash Flood | Aug 29, 2019 | 0.00K |
| Flood | Sep 28, 2019 | 0.00K |
| Flash Flood | May 28, 2019 | 0.00K |
| Flash Flood | Jun 28, 2017 | 0.00K |
| Flood | Jun 9, 2011 | 0.00K |
| Flash Flood | Jun 5, 2010 | 0.00K |
| Flash Flood | May 15, 2009 | 0.00K |
Flash Flood — Jun 24, 2025
Storms bring damaging wind gusts, heavy rain, and flooding to portions of NW and north central Missouri.
Flash Flood — Jun 24, 2021
Late in the afternoon, and through the evening hours on June 24 a cluster of storms over southeast Nebraska congealed into a line of thunderstorms that focused across northern Missouri. Most notably within this line of storms was a cluster of QLCS tornadoes that formed in Grundy County. There may have been other tornadoes associated with circulations that were noted on radar, but emergency mana...
Flood — Sep 29, 2019
Several areas had flash flooding after 3 to 5 inches of rain fell across the area. The worst of the flooding came from Harrisonville, where several business were inundated under several feet of water.
Flash Flood — Aug 29, 2019
Multiple rounds of thunderstorms produced flash flooding, hail round 1 inch, and gusty winds that caused some minor damage.
Flood — Sep 28, 2019
Several areas had flash flooding after 3 to 5 inches of rain fell across the area. The worst of the flooding came from Harrisonville, where several business were inundated under several feet of water.
Source: NOAA National Weather Service Storm Events Database.
Source: OpenFEMA NFIP Individual Claims (2.25M records analyzed).
FEMA assigns flood zone designations to areas in Harrison County, Missouri:
AE High Risk — 1% annual chance of flooding. Insurance required.
VE Very High Risk — Coastal flooding with wave action.
X (Shaded) Moderate Risk — 500-year floodplain.
X Low Risk — Outside major floodplains.
Properties in Harrison County, Missouri that are in FEMA-designated Special Flood Hazard Areas (zones A and V) with federally backed mortgages are required to carry flood insurance.
Even outside high-risk zones, flood insurance is recommended. From 2014 to 2024, nearly one-third of NFIP claims came from outside the high-risk Special Flood Hazard Area.
Visit FloodSmart.gov to find an agent and get a quote.