Enter any address in Alcorn County, Mississippi to see its FEMA flood zone
Flash flooding from heavy rainfall events is the primary flood concern in Alcorn County. Over the past 30 years, NOAA Storm Events data shows 36 recorded flash flood events, resulting in one fatality. For example, isolated flash flooding occurred in northeast Mississippi on May 10, 2023, due to slow-moving thunderstorms. Similarly, heavy rain contributed to flooding on April 13, 2022, amidst severe weather.
National Flood Insurance Program (NFIP) claims data indicates that properties in Zone A and Zone X have experienced significant payouts, with average claims of $79,637 and $108,500 respectively. Zone X_SHADED properties, though fewer in number, have seen high average water depths of 3.0 feet. Homeowners in these zones, as well as those in Zone X_UNSHADED, should pay close attention to flood risk.
Summary generated from NOAA storm narratives and NFIP claim data for this county. Not predictive.
8 NOAA storm reports from this county describe what happened, in the words of the meteorologists who were there.
Alcorn County, Mississippi has recorded 40 flood-related events since 1996 according to NOAA's Storm Events Database, including 36 flash floods and 4 river or area floods. The county has received 18 federal disaster declarations. Enter any address above to check its FEMA flood zone designation.
FEMA Disaster Declarations (1973–2026)
Source: OpenFEMA Disaster Declarations Summaries.
| Declaration | Type | Date |
|---|---|---|
| Severe Winter Storm | Winter Storm | Jan 23, 2026 |
| Hurricane Ida | Hurricane | Aug 28, 2021 |
| Covid-19 | Biological | Jan 20, 2020 |
| Covid-19 Pandemic | Biological | Jan 20, 2020 |
| Severe Storm, Straight-line Winds, And Flooding | Severe Storm | Oct 26, 2019 |
| Severe Storms, Straight-line Winds, Tornadoes, And Flooding | Severe Storm | Feb 22, 2019 |
| Severe Storms, Tornadoes, Straight-line Winds, And Associated Flooding | Severe Storm | Apr 15, 2011 |
| Severe Storms, Tornadoes, And Flooding | Severe Storm | May 1, 2010 |
| Hurricane Gustav | Hurricane | Aug 28, 2008 |
| Hurricane Katrina | Hurricane | Aug 29, 2005 |
NOAA Storm Events Database (1996–2025)
Source: NOAA National Weather Service Storm Events Database.
| Type | Date | Damage |
|---|---|---|
| Flash Flood | Apr 5, 2025 | 0.00K |
| Flash Flood | May 10, 2023 | 0.00K |
| Flash Flood | Apr 13, 2022 | 0.00K |
| Flash Flood | Mar 17, 2021 | 20.00K |
| Flash Flood | Jun 2, 2021 | 0.00K |
| Flash Flood | Sep 12, 2020 | 1.00K |
| Flash Flood | Feb 22, 2019 | 0.00K |
| Flash Flood | Jun 9, 2014 | 0.00K |
| Flash Flood | Mar 31, 2012 | 0.00K |
| Flash Flood | Jun 28, 2011 | 0.00K |
Flash Flood — Apr 5, 2025
The front eventually sagged south back into the Mid-South during the early morning hours of April 5th. Strong low-level moisture transport into the frontal zone resulted in heavy rain and training storms across northern sections of the Mid-South, mainly north of I-40. A bow echo developed along and just south of the slowly advancing front. This feature crossed the entire forecast area producing...
Flash Flood — May 10, 2023
Slow-moving bands of showers and thunderstorms associated with an upper low located over the Lower Mississippi Valley intensified during the afternoon hours on May 10, 2023, when instability peaked. Locally heavy rainfall resulted in isolated flash flooding over extreme northeast Mississippi.
Flash Flood — Apr 13, 2022
A shortwave moved into the Lower Mississippi Valley triggering numerous showers and thunderstorms across Arkansas during the morning hours of April 13, 2022. Storms eventually organized into a line that swept across the Mid-South. A strong low-level jet, large amounts of wind shear, and moderate amounts of instability supported severe thunderstorms across the Mid-South. Large hail, damaging win...
Flash Flood — Mar 17, 2021
A slow-moving warm front lifted north into the Mid-South during the morning hours of March 17th with numerous showers and thunderstorms. Heavy rain produced some flash flooding and there were a couple of severe weather reports along with a couple of damaging lightning strikes. The front stalled across the area during the day with southern parts of the Mid-South, especially northeast Mississippi...
Flash Flood — Jun 2, 2021
A closed upper low was situated over Oklahoma while the warm sector destabilized across the Mid-South during the afternoon hours of June 2, 2021. A weak surface pressure trough pushing through West Tennessee and Northeast Mississippi helped to ignite slow-moving storms during the afternoon and into the evening. There were a few severe weather reports along with isolated 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 Alcorn County, Mississippi:
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 Alcorn County, Mississippi 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.