Enter any address in Johnson County, Missouri to see its FEMA flood zone
Flash flooding from heavy rainfall events dominates flood occurrences in Johnson County, Missouri. Between 2000 and 2020, NOAA data recorded 94 flood events and 47 flash flood events. For example, in July 2020, Johnson County experienced nearly 10 inches of rain over a 36-48 hour period, leading to minor flooding and temporary road closures. Similar conditions occurred in May 2020, with minor flash flooding causing brief road shutdowns.
National Flood Insurance Program (NFIP) claims data indicates that properties in Zone A and Zone X have experienced the most claims. Zone A claims averaged $13,809 with an average water depth of 7.5 feet, while Zone X claims averaged $4,904 with an average water depth of 9.8 feet. Homeowners in these zones, as well as those in Zone X_Unshaded, should pay particular attention to flood risk.
Summary generated from NOAA storm narratives and NFIP claim data for this county. Not predictive.
19 NOAA storm reports from this county describe what happened, in the words of the meteorologists who were there.
Johnson County, Missouri has recorded 141 flood-related events since 1996 according to NOAA's Storm Events Database, including 47 flash floods and 94 river or area floods. The county has received 21 federal disaster declarations, 4 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, Straight-line Winds, And Flooding | Severe Storm | May 15, 2015 |
| Severe Winter Storm | Severe Storm | Jan 31, 2011 |
| Severe Winter Storm And Snowstorm | Severe Storm | Jan 31, 2011 |
| 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 |
| Severe Storms, Tornadoes And Flooding | Severe Storm | Mar 8, 2006 |
| Hurricane Katrina Evacuation | Hurricane | Aug 29, 2005 |
NOAA Storm Events Database (1996–2025)
Source: NOAA National Weather Service Storm Events Database.
| Type | Date | Damage |
|---|---|---|
| Flash Flood | Jul 30, 2020 | 0.00K |
| Flood | Jul 30, 2020 | 0.00K |
| Flood | Jul 29, 2020 | 0.00K |
| Flood | May 28, 2020 | 0.00K |
| Flash Flood | Apr 30, 2019 | 0.00K |
| Flash Flood | Sep 28, 2019 | 0.00K |
| Flash Flood | Jun 5, 2019 | 0.00K |
| Flood | Jul 28, 2017 | 0.00K |
| Flash Flood | Jul 27, 2017 | 0.00K |
| Flash Flood | Aug 22, 2017 | 0.00K |
Flash Flood — Jul 30, 2020
Throughout the final few days of the month a mid level trough dug into the central part of the CONUS, and produced several rounds of moderate to heavy rain. Several areas reported well over 6 inches of rain over the 2 day period, with the high values occurring in Johnson County Missouri where almost 10 inches of rain over the 36-48 period was reported. Most of the flooding was minor and little ...
Flood — Jul 30, 2020
Throughout the final few days of the month a mid level trough dug into the central part of the CONUS, and produced several rounds of moderate to heavy rain. Several areas reported well over 6 inches of rain over the 2 day period, with the high values occurring in Johnson County Missouri where almost 10 inches of rain over the 36-48 period was reported. Most of the flooding was minor and little ...
Flood — Jul 29, 2020
Throughout the final few days of the month a mid level trough dug into the central part of the CONUS, and produced several rounds of moderate to heavy rain. Several areas reported well over 6 inches of rain over the 2 day period, with the high values occurring in Johnson County Missouri where almost 10 inches of rain over the 36-48 period was reported. Most of the flooding was minor and little ...
Flood — May 28, 2020
On the morning of May 28 there was some minor flash flooding, causing some roads in the area to shut down briefly.
Flash Flood — Apr 30, 2019
Mulitple rounds of severe weather brought some marginally large hail and periods of flooding to the region.
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 Johnson 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 Johnson 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.