Enter any address in Walthall County, Mississippi to see its FEMA flood zone
Flash flooding and tropical storm activity are the primary flood drivers in Walthall County. Over the last 30 years, NOAA Storm Events data shows 8 flash flood events and 4 tropical storm events impacting the county. Recent examples include significant flooding from heavy rainfall in December 2018 and the passage of Tropical Storm Delta in October 2020.
National Flood Insurance Program (NFIP) claims data indicates that properties in Zone A have experienced the most claims, with an average payout of $11,095 and an average water depth of 6.9 feet. While Zone X properties had fewer claims, their average water depth was higher at 7.5 feet, with an average payout of $7,367. Residents in Zone A and Zone X, as well as those in areas with unknown flood risk, should pay close attention to flood warnings and consider flood insurance.
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.
Walthall County, Mississippi has recorded 16 flood-related events since 1996 according to NOAA's Storm Events Database, including 8 flash floods. The county has received 29 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 (1969–2026)
Source: OpenFEMA Disaster Declarations Summaries.
| Declaration | Type | Date |
|---|---|---|
| Severe Winter Storm | Winter Storm | Jan 23, 2026 |
| Severe Storms, Straight-line Winds, Tornadoes, And Flooding | Severe Storm | Mar 14, 2025 |
| Hurricane Ida | Hurricane | Aug 28, 2021 |
| Severe Winter Storms | Severe Ice Storm | Feb 11, 2021 |
| Hurricane Delta | Hurricane | Oct 7, 2020 |
| Hurricane Sally | Hurricane | Sep 14, 2020 |
| Hurricane Marco And Tropical Storm Laura | Hurricane | Aug 23, 2020 |
| Severe Storms, Tornadoes, Straight-line Winds, And Flooding | Severe Storm | Apr 12, 2020 |
| Covid-19 | Biological | Jan 20, 2020 |
| Covid-19 Pandemic | Biological | Jan 20, 2020 |
NOAA Storm Events Database (1996–2025)
Source: NOAA National Weather Service Storm Events Database.
| Type | Date | Damage |
|---|---|---|
| Hurricane (Typhoon) | Aug 29, 2021 | 1.00M |
| Tropical Storm | Oct 28, 2020 | 100.00K |
| Tropical Storm | Oct 9, 2020 | 500.00K |
| Flash Flood | Dec 27, 2018 | 0.00K |
| Flash Flood | Mar 10, 2016 | 1.00M |
| Flash Flood | Aug 29, 2012 | 250.00K |
| Tropical Storm | Aug 28, 2012 | 250.00K |
| Flash Flood | Mar 28, 2009 | 0.00K |
| Tropical Depression | Aug 24, 2008 | 0.00K |
| Hurricane (Typhoon) | Sep 1, 2008 | 0.20M |
Hurricane (Typhoon) — Aug 29, 2021
The ninth named storm, fourth hurricane, and second major hurricane of the 2021 Atlantic hurricane season, Ida originated from a tropical wave in the Caribbean Sea on August 23rd. On August 26th, the wave developed into a tropical depression, which organized further and became Tropical Storm Ida later that day, near Grand Cayman. On a northwestward track, Ida intensified into a hurricane on Aug...
Tropical Storm — Oct 28, 2020
A tropical depression formed in the northwestern Caribbean on the afternoon of October 24th. 9 hours later, it became the twenty-seventh named storm and eleventh hurricane of the exceptionally active 2020 Atlantic hurricane season. After meandering virtually in the same place, it finally began moving northwest and slowly strengthening before making its first landfall on the Yucatan Peninsula on...
Tropical Storm — Oct 9, 2020
Delta first developed into a tropical depression in the Caribbean just south of Jamaica on the afternoon of October 4th. As it tracked across the western Caribbean, it rapidly intensified into a Category 4 hurricane. In fact, intensifying from tropical depression to Category strength in 40 hours is the fastest rate of intensification of any storm on record in the Atlantic Basin. Delta quickly w...
Flash Flood — Dec 27, 2018
Strong low pressure moving through the Southern Plains produced widespread heavy rainfall during the 27th and 28th. Several reports of significant flooding were received from southwest Mississippi during the overnight hours.
Flash Flood — Mar 10, 2016
A closed upper low over Texas sent multiple disturbances through the area resulting in heavy rainfall and widespread flooding across southeast Louisiana and southern Mississippi. Major flooding occurred on several rivers, with a few records broken.
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 Walthall 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 Walthall 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.