Enter any address in Warren County, New Jersey to see its FEMA flood zone
Flash flooding from thunderstorms is the most frequent type of flood event recorded in Warren County, NJ over the past 30 years, with 56 such events noted. Other flood types, including general floods and tropical storms, have also occurred. Recent examples include flash flooding events in July 2025 and August 2024, both linked to weather systems.
National Flood Insurance Program (NFIP) data shows a significant number of claims in Zone A, with an average payout of $24,023 and an average water depth of 11.4 feet. Zone X_SHADED and Zone X_UNSHADED also show substantial claim activity, with average payouts exceeding $28,000 and $36,000 respectively, and average water depths around 11 and 9.7 feet. Homeowners in Zone A, as well as those in shaded and unshaded moderate flood risk areas (Zone X_SHADED and 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.
14 NOAA storm reports from this county describe what happened, in the words of the meteorologists who were there.
Warren County, New Jersey has recorded 80 flood-related events since 1996 according to NOAA's Storm Events Database, including 56 flash floods and 22 river or area floods. The county has received 27 federal disaster declarations, 1 of which involved flooding or coastal storms. Enter any address above to check its FEMA flood zone designation.
FEMA Disaster Declarations (1965–2023)
Source: OpenFEMA Disaster Declarations Summaries.
| Declaration | Type | Date |
|---|---|---|
| Severe Storm And Flooding | Severe Storm | Jul 14, 2023 |
| Remnants Of Hurricane Ida | Hurricane | Sep 1, 2021 |
| Severe Winter Storm And Snowstorm | Snowstorm | Jan 31, 2021 |
| Covid-19 | Biological | Jan 20, 2020 |
| Covid-19 Pandemic | Biological | Jan 20, 2020 |
| Severe Winter Storm And Snowstorm | Severe Storm | Jan 22, 2016 |
| Hurricane Sandy | Hurricane | Oct 26, 2012 |
| Severe Storm | Severe Storm | Oct 29, 2011 |
| Remnants Of Tropical Storm Lee | Severe Storm | Sep 28, 2011 |
| Hurricane Irene | Hurricane | Aug 27, 2011 |
NOAA Storm Events Database (1996–2025)
Source: NOAA National Weather Service Storm Events Database.
| Type | Date | Damage |
|---|---|---|
| Flash Flood | Jul 14, 2025 | 0.00K |
| Flash Flood | Jul 3, 2025 | 0.00K |
| Flash Flood | Aug 18, 2024 | 0.00K |
| Flash Flood | Jun 26, 2023 | 0.00K |
| Flash Flood | Jul 16, 2023 | 0.00K |
| Flash Flood | Jul 14, 2023 | 0.00K |
| Flash Flood | Aug 22, 2021 | 0.00K |
| Flash Flood | Sep 8, 2021 | 0.00K |
| Flash Flood | Sep 1, 2021 | 0.00K |
| Flash Flood | Aug 4, 2020 | 0.00K |
Flash Flood — Jul 14, 2025
An approaching cold front sparked off showers and thunderstorms across the forecast area. Flash flooding resulted.
Flash Flood — Jul 3, 2025
A cold front, moving through the region, was responsible for heavy rain and flash flooding.
Flash Flood — Aug 18, 2024
Waves of showers and thunderstorms ahead of a cold front produced widespread showers and thunderstorms. A few storms produced damaging wind gusts, knocking down trees and power lines across portions of New Jersey.
Flash Flood — Jun 26, 2023
Thunderstorms produced locally heavy rain in northern New Jersey from the late afternoon into the nighttime hours of June 26. Rainfall totals were as high as 2 to 5 inches.
Flash Flood — Jul 16, 2023
Widespread showers and thunderstorms produced locally heavy rain in New Jersey on July 16. Rainfall totals were as high as 3 to 5 inches.
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 Warren County, New Jersey:
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 Warren County, New Jersey 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.