5,845 flood insurance claims·$163.9M paid·11 federal flood & hurricane disasters
Share of the whole county outline, rivers and lakes included; parts FEMA hasn’t mapped count as zero.
Shaded areas are FEMA’s mapped flood hazard zones in and around Essex County, New Jersey. Zoomed out they are simplified; at street level the map switches to FEMA’s exact layer. Tap anywhere to check that spot, or search an address above.
Flash flooding from summer thunderstorms dominates the flood risk profile in Essex County. Over the last 30 years, the NOAA Storm Events Database records 135 flash flood events resulting in 5 deaths, compared to 28 general floods, 3 tropical storms, and 2 coastal floods. Recent events illustrate this pattern: an August 2024 frontal system produced slow-moving thunderstorms with rainfall rates of 1 to 3 inches per hour that caused widespread evening flash flooding, while an August 2025 thunderstorm resulted in cars stuck in flood waters across the county.
National Flood Insurance Program claims data demonstrates that flood damage extends across multiple zones. Zone A accounts for the highest claim volume with 4,272 claims averaging $36,239 and an average recorded water depth of 11 inches. Zone X properties recorded 880 claims with an average payout of $40,627 and an average water depth of 12 inches. Shaded Zone X properties saw 195 claims with an average payout of $31,498 and an average water depth of 7 inches, while unshaded Zone X properties recorded 328 claims averaging $9,706 with an average depth of 2 inches. Properties with unknown zones recorded 162 claims averaging $12,743 with an average depth of 2 inches.
Homeowners, real estate agents, and journalists in Essex County should pay close attention to properties located within Zone A and Zone X, as these areas experience both high claim volumes and significant average water depths during flood events.
Summary written from NOAA storm reports and NFIP claims for this county. Not a prediction.
11% of Essex County’s flood insurance claims were on properties rated outside FEMA’s high-risk zones.
4,801 NFIP claims with a recorded rated flood zone, 1978 to date. The zone is the one FEMA used to rate that policy, which may not match today’s map. Source: OpenFEMA NFIP claims.
In flood insurance claims here that reported a flood depth, the average was 10 inches.
Drawn to scale against an 80-inch door. Even a few inches soaks flooring, the bottom of the drywall and anything plugged in near the floor.
Average of the depths reported on claims (zero and implausible values left out); FEMA’s record doesn’t say exactly where each depth was measured. Source: OpenFEMA NFIP claims.
The worst year was 2011, with 1,543 claims and $60.5M paid, the year of Hurricane Irene and Severe Storm.
Bar height is scaled by square root so ordinary years stay visible next to the worst one. NFIP claims by year of loss. Source: OpenFEMA.
78 NOAA storm reports from Essex County describe what happened, in the words of the forecasters who covered it. Read the New Jersey flood stories →
33 federal disaster declarations since 1965, 11 of them floods, coastal storms or hurricanes.
| Disaster | Began |
|---|---|
| Remnants Of Hurricane Ida | Sep 1, 2021 |
| Tropical Storm Isaias | Aug 4, 2020 |
| Severe Winter Storm And Snowstorm | Mar 6, 2018 |
| Severe Winter Storm And Snowstorm | Jan 22, 2016 |
| Hurricane Sandy | Oct 26, 2012 |
| Severe Storm | Oct 29, 2011 |
| Hurricane Irene | Aug 27, 2011 |
| Severe Winter Storm And Snowstorm | Dec 26, 2010 |
Weather and water disasters only; most recent first. Source: OpenFEMA Disaster Declarations.
168 since 1996: 135 flash floods, 28 river or area floods and 2 coastal floods or surges.
| Event | Date | Damage |
|---|---|---|
| Flash Flood | Aug 13, 2025 | — |
| Flash Flood | Aug 18, 2024 | — |
| Coastal Flood | Jan 13, 2024 | — |
| Flash Flood | Dec 18, 2023 | — |
| Flash Flood | Sep 13, 2022 | — |
| Flash Flood | Jul 29, 2021 | — |
| Flash Flood | Oct 26, 2021 | — |
| Flash Flood | Aug 22, 2021 | — |
— = no damage estimate in the record. Source: NOAA Storm Events Database.
Flash Flood · Aug 13, 2025. Thunderstorm moved across northeast New Jersey resulting in a water rescue across Hudson County, cars stuck in flood waters across Essex County and Road closures across Union County.
Flash Flood · Aug 18, 2024. A frontal system over the area on August 18th produced heavy thunderstorms that were fairly slow moving over northeast New Jersey. A cold front moving in from the west late in the afternoon produced heavy thunderstorms with an environmental MUCAPE of 2000-3000 J/kg and PWAT values of 1.7-1.8 inches. These slow moving thunderstorms produce rainfall rates of 1-3 inches per hour over New Jersey with total rainfall am…
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 tidal waterways of Northeast New Jersey.
Flash Flood · Dec 18, 2023. A warm front ahead of a developing coastal low pressure system positions itself over the area late on December 17th and into December 18th. As the low pressure intensified and approached, significant amounts of moisture focused along the warm front ahead of the coastal low resulting in widespread areas of heavy rainfall that occurred over a 12-18 hour period. PWATs were 1.5-1.7 inches which were near record values…
National Weather Service narratives, lightly trimmed. Source: NOAA Storm Events Database.
Every colour on the map above is a place on this drawing: where the ground sits relative to the flood FEMA plans for.
If a building in Essex County is in a high-risk zone (A or V) and its mortgage comes from a federally regulated or insured lender, or is federally backed, flood insurance is required.
Outside those zones it is optional, and often worth having: from 2014 to 2024 nearly one-third of NFIP claims came from outside the high-risk Special Flood Hazard Area. Since Risk Rating 2.0, NFIP premiums are set for each building, so the only reliable price is a quote: FloodSmart.gov or a local agent.