Enter any address in Marion County, Missouri to see its FEMA flood zone
Flash flooding from thunderstorms is the dominant flood character in Marion County, MO. Between 2000 and 2023, NOAA Storm Events data recorded 19 flood events and 19 flash flood events. For example, flash flooding occurred on July 31, 2021, as a mesoscale convective complex moved across the region, and again on June 3, 2020, when storms triggered widespread showers and severe weather.
FEMA data indicates that properties in Zone A have experienced the most National Flood Insurance Program (NFIP) claims, with 340 claims averaging $21,103 and a water depth of 4.0 feet. However, properties in Zone X, though fewer in number (28 claims), have seen significantly higher average payouts of $42,932, with an average water depth of 1.6 feet. Homeowners in Zone A, as well as those in Zone X, should pay particular attention to flood risk.
Summary generated from NOAA storm narratives and NFIP claim data for this county. Not predictive.
2 NOAA storm reports from this county describe what happened, in the words of the meteorologists who were there.
Marion County, Missouri has recorded 38 flood-related events since 1996 according to NOAA's Storm Events Database, including 19 flash floods and 19 river or area floods. The county has received 24 federal disaster declarations, 3 of which involved flooding or coastal storms. Enter any address above to check its FEMA flood zone designation.
FEMA Disaster Declarations (1965–2020)
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 | Flood | Dec 22, 2015 |
| Severe Storms, Tornadoes, Straight-line Winds, And Flooding | Severe Storm | May 15, 2015 |
| Severe Storms, Straight-line Winds, Tornadoes, And Flooding | Severe Storm | May 29, 2013 |
| Severe Winter Storm | Severe Storm | Jan 31, 2011 |
| Severe Winter Storm And Snowstorm | Severe Storm | Jan 31, 2011 |
| Severe Storms, Flooding, And Tornadoes | Severe Storm | Jun 12, 2010 |
| Severe Storms, Tornadoes, And Flooding | Severe Storm | May 8, 2009 |
NOAA Storm Events Database (1996–2025)
Source: NOAA National Weather Service Storm Events Database.
| Type | Date | Damage |
|---|---|---|
| Flash Flood | Jul 31, 2021 | 0.00K |
| Flash Flood | Jun 25, 2021 | 0.00K |
| Flash Flood | Jun 3, 2020 | 0.00K |
| Flash Flood | Jul 5, 2017 | 0.00K |
| Flash Flood | Jul 27, 2015 | 0.00K |
| Flash Flood | Jul 12, 2015 | 0.00K |
| Flash Flood | May 30, 2013 | 0.00K |
| Flood | Apr 18, 2013 | 2.00K |
| Flood | Apr 18, 2013 | 1.00K |
| Flood | Apr 12, 2013 | 5.00K |
Flash Flood — Jul 31, 2021
A mesoscale convective complex moved across portions of eastern Missouri and west central/southwest Illinois. There were several reports of flash flooding, as well as a tornado.
Flash Flood — Jun 25, 2021
A composite outflow boundary extending from the Kansas City area towards southeast Missouri was a focus for new development from the evening hours of June 25th through June 26th. There were numerous reports of damaging winds and flash flooding with this event, as well as a tornado.
Flash Flood — Jun 3, 2020
A combination of old outflow boundaries and a cold front moved through the region, triggering widespread showers and storms. Some of the storms became severe with damaging winds, large hail and flash flooding.
Flash Flood — Jul 5, 2017
Storms with heavy rain trained across northeast Missouri during the day and into the evening hours causing flash flooding.
Flash Flood — Jul 27, 2015
Storms developed across the forecast area. Some of the storms produced very heavy rainfall and damaging winds.
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 Marion 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 Marion 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.