Enter any address in Fairfield County, Connecticut to see its FEMA flood zone
Flash flooding from heavy rainfall events is the most frequent type of flooding in Fairfield County, CT, with 169 events recorded in the last 30 years. Recent examples include a July 2025 event where a stalled cold front caused road closures, and an August 2024 event featuring thunderstorms with rainfall rates of 3-4.5 inches per hour, leading to flash flood emergencies.
National Flood Insurance Program (NFIP) data shows that properties in Zone A have experienced the highest number of claims, averaging $24,316 per payout with an average water depth of 4.0 feet. While Zone X properties have fewer claims, they still average $20,462 with 3.6 feet of water. Coastal flood events and storm surge/tide events have also occurred, resulting in fatalities.
Homeowners in low-lying areas, particularly those near rivers and the coast, should pay close attention to flood risk. Properties located in Zone A and Zone V, as well as those without a Base Flood Elevation (BFE), may face a higher risk of significant flood damage.
Summary generated from NOAA storm narratives and NFIP claim data for this county. Not predictive.
95 NOAA storm reports from this county describe what happened, in the words of the meteorologists who were there.
Fairfield County, Connecticut has recorded 226 flood-related events since 1996 according to NOAA's Storm Events Database, including 169 flash floods and 28 river or area floods. The county has received 33 federal disaster declarations, 3 of which involved flooding or coastal storms. Enter any address above to check its FEMA flood zone designation.
FEMA Disaster Declarations (1978–2024)
Source: OpenFEMA Disaster Declarations Summaries.
| Declaration | Type | Date |
|---|---|---|
| Severe Storm, Flooding, Landslides, And Mudslides | Severe Storm | Aug 18, 2024 |
| Severe Storms, Flooding, Landslides, And Mudslides | Severe Storm | Aug 18, 2024 |
| Remnants Of Hurricane Ida | Hurricane | Sep 1, 2021 |
| Hurricane Henri | Hurricane | Aug 21, 2021 |
| Tropical Storm Isaias | Hurricane | Aug 4, 2020 |
| Covid-19 | Biological | Jan 20, 2020 |
| Covid-19 Pandemic | Biological | Jan 20, 2020 |
| Severe Storms, Tornadoes, And Straight-line Winds | Tornado | May 15, 2018 |
| Severe Winter Storm | Severe Storm | Feb 8, 2013 |
| Severe Winter Storm And Snowstorm | Severe Storm | Feb 8, 2013 |
NOAA Storm Events Database (1996–2025)
Source: NOAA National Weather Service Storm Events Database.
| Type | Date | Damage |
|---|---|---|
| Flood | Oct 30, 2025 | 0.00K |
| Flash Flood | Jul 8, 2025 | 0.00K |
| Flash Flood | Jun 30, 2024 | 0.00K |
| Flash Flood | Aug 18, 2024 | 0.00K |
| Flash Flood | Aug 18, 2024 | 100.00K (1 deaths) |
| Flash Flood | Aug 18, 2024 | 50.00K |
| Coastal Flood | Jan 13, 2024 | 0.00K |
| Flash Flood | Jan 10, 2024 | 0.00K |
| Flash Flood | Sep 29, 2023 | 0.00K |
| Flash Flood | Jul 16, 2023 | 0.00K |
Flood — Oct 30, 2025
Flash Flooding as a frontal system moved across the area resulting in widespread heavy rainfall.
Flash Flood — Jul 8, 2025
A slow-moving cold front stalled over the area resulting in convection over southern CT and causing some road closures.
Flash Flood — Jun 30, 2024
A slow moving cold front allowed for widespread thunderstorm development on June 30th. MUCAPE values of 2000-3000 J/kg with PWATs near 2 allowed for thunderstorms to produce heavy rainfall with rainfall rates of 1-2 inches per hour. These thunderstorms moved through the Lower Hudson Valley and Connecticut resulting in 1 to 2 inches of rain, most of which fell over a one to two hour period. This...
Flash Flood — Aug 18, 2024
A frontal system over the area on August 18th allowed for the development of rain early in the morning. As the day progressed, mesoscale features including multiple boundary interactions and a mesolow allowed thunderstorms to continue to intensify with persistent back-building and training over the same areas in southern Connecticut. These thunderstorms produced anywhere from 3-4.5 inch per hou...
Coastal Flood — Jan 13, 2024
Strong low pressure shifted northeast through the eastern Great Lakes on January 13, 2024, sending a warm front through during the morning hours, followed quickly by a cold front. Strong winds produced by this system, combined with peaking high astronomical tides associated with a recent new moon, produced widespread moderate coastal flooding along the southern Connecticut coastline.
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 Fairfield County, Connecticut:
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 Fairfield County, Connecticut 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.