Enter any address in Greene County, Illinois to see its FEMA flood zone
Flash flooding from thunderstorms is the dominant flood character in Greene County. Over the last 30 years, the NOAA Storm Events Database recorded 12 flash flood events and 6 general flood events. Recent examples include flash flooding reported on July 31, 2021, and June 19, 2021, both associated with widespread storm activity.
NFIP claims data indicates that properties in Zone A have experienced the most frequent flood events, with 49 claims averaging over $22,000 and water depths of nearly 5 feet. While less frequent, Zone X_Unshaded properties have seen higher average payouts and deeper water, with one claim averaging over $17,000 and 5 feet of water. Residents in Zone A, and 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.
3 NOAA storm reports from this county describe what happened, in the words of the meteorologists who were there.
Greene County, Illinois has recorded 18 flood-related events since 1996 according to NOAA's Storm Events Database, including 12 flash floods and 6 river or area floods. The county has received 19 federal disaster declarations, 6 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 And Flooding | Flood | Feb 24, 2019 |
| Severe Storms, Straight-line Winds, And Flooding | Flood | Apr 16, 2013 |
| Severe Storms And Flooding | Severe Storm | Sep 13, 2008 |
| Severe Storms And Flooding | Severe Storm | Jun 1, 2008 |
| Tornadoes And Severe Storms | Severe Storm | Mar 11, 2006 |
| Hurricane Katrina Evacuation | Hurricane | Aug 29, 2005 |
| Severe Storms, Tornadoes, And Flooding | Severe Storm | May 6, 2003 |
| Severe Storms, Tornadoes And Flooding | Tornado | Apr 21, 2002 |
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 19, 2021 | 0.00K |
| Flash Flood | Jul 19, 2015 | 0.00K |
| Flash Flood | Jun 11, 2014 | 0.00K |
| Flood | Apr 19, 2013 | 5.00K |
| Flood | May 1, 2013 | 2.00K |
| Flood | Jun 1, 2013 | 1.00K |
| Flash Flood | May 10, 2007 | 0.00K |
| Flash Flood | May 27, 2004 | — |
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 19, 2021
An outflow boundary from earlier convection moved southward through region, triggering widespread storms. Some of the storms became severe with numerous reports of large hail, damaging winds and flash flooding.
Flash Flood — Jul 19, 2015
Several rounds of heavy rain moved through portions of the forecast area on the July 19th and 20th. There were several reports of flash flooding.
Flash Flood — Jun 11, 2014
Strong surface low over southwest Missouri lifted northeast through the region. It triggered numerous showers and thunderstorms. A few of the storms produced damaging winds and flash flooding.
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 Greene County, Illinois:
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 Greene County, Illinois 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.