Enter any address in St. Martin Parish, Louisiana to see its FEMA flood zone
Flash flooding from thunderstorms is the most frequent flood event in St. Martin Parish County, with 31 occurrences recorded by NOAA over the past 30 years. Recent examples include flash flooding in April 2025, caused by a stalled cold front producing several days of rain and severe storms, and in March 2025, when upper disturbances and a slow-moving cold front led to multiple days of stormy weather, severe weather, and flooding. Tropical storms and hurricanes have also impacted the area, contributing to flood events and resulting in fatalities.
Analysis of National Flood Insurance Program (NFIP) claims shows that properties in Zone A have experienced the highest number of claims, with an average payout of $11,447 for 2.0 feet of water depth. However, Zone X properties have seen significantly higher average payouts, reaching $43,023 with an average water depth of 2.6 feet, indicating substantial damage despite fewer claims. Homeowners in Zone A, as well as those in all other designated flood zones, should be particularly attentive to flood risks and consider appropriate mitigation measures.
Summary generated from NOAA storm narratives and NFIP claim data for this county. Not predictive.
28 NOAA storm reports from this county describe what happened, in the words of the meteorologists who were there.
St. Martin Parish, Louisiana has recorded 62 flood-related events since 1996 according to NOAA's Storm Events Database, including 31 flash floods and 7 river or area floods. The county has received 54 federal disaster declarations, 16 of which involved flooding or coastal storms. Enter any address above to check its FEMA flood zone designation.
FEMA Disaster Declarations (1965–2026)
Source: OpenFEMA Disaster Declarations Summaries.
| Declaration | Type | Date |
|---|---|---|
| Severe Winter Storm | Winter Storm | Jan 23, 2026 |
| Tropical Storm Francine | Hurricane | Sep 10, 2024 |
| Hurricane Francine | Hurricane | Sep 9, 2024 |
| Tropical Storm Nicholas | Coastal Storm | Sep 12, 2021 |
| Hurricane Ida | Hurricane | Aug 26, 2021 |
| Tropical Storm Ida | Hurricane | Aug 26, 2021 |
| Severe Winter Storm | Severe Ice Storm | Feb 11, 2021 |
| Severe Winter Storms | Severe Ice Storm | Feb 11, 2021 |
| Hurricane Zeta | Hurricane | Oct 26, 2020 |
| Tropical Storm Zeta | Hurricane | Oct 26, 2020 |
NOAA Storm Events Database (1996–2025)
Source: NOAA National Weather Service Storm Events Database.
| Type | Date | Damage |
|---|---|---|
| Flash Flood | Mar 31, 2025 | 0.00K |
| Flash Flood | Mar 29, 2025 | 0.00K |
| Flash Flood | Apr 24, 2025 | 0.00K |
| Flash Flood | Jun 13, 2025 | 0.00K |
| Tropical Storm | Sep 11, 2024 | 25.00K |
| Flash Flood | Jun 1, 2024 | 100.00K |
| Flash Flood | Aug 3, 2022 | 5.00K |
| Tropical Storm | Aug 29, 2021 | 200.00K |
| Tropical Storm | Aug 29, 2021 | 300.00K |
| Tropical Storm | Aug 26, 2020 | 10.00M |
Flash Flood — Mar 31, 2025
A series of upper disturbances and a slow moving cold front created multiple days of stormy weather across portions of Louisiana. Severe weather and flooding occurred.
Flash Flood — Mar 29, 2025
A series of upper disturbances and a slow moving cold front created multiple days of stormy weather across portions of Louisiana. Severe weather and flooding occurred.
Flash Flood — Apr 24, 2025
A cold front moved into the region and stalled late in April producing a few days of rain. Flooding occurred at multiple locations and severe storms also developed as a result.
Flash Flood — Jun 13, 2025
An inverted trough moved slowly along the coast of Louisiana increasing moisture which caused heavy rain and thunderstorms over multiple days.
Tropical Storm — Sep 11, 2024
Francine originated from a tropical wave that emerged off the West coast of Africa on August 28th. The wave traversed the tropical Atlantic Ocean with minimal organization, reaching the Leeward Islands by September 1st. The tropical wave reached the Yucat��n Peninsula by September 6th, emerged into the Bay of Campeche by September 7th, with a broad surface low pressure noted by September 8t...
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 St. Martin Parish, Louisiana:
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 St. Martin Parish, Louisiana 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.