Essex County, New Jersey Natural Disaster Risk
FEMA National Risk Index assessment · NJ
HighComposite Risk Score
National percentile: 98th
Essex County faces high composite natural disaster risk (NRI Risk Index score 97.7, 98th national percentile), driven primarily by heat wave and riverine flood exposure. Expected annual loss across all 18 hazard types is $214M.
Source: FEMA National Risk Index v1.20 · Updated December 2025
Risk Overview
Overall natural disaster risk in Essex County is high, with a National Risk Index score of 97.7 out of 100 — placing it in the 98th national percentile and in the upper tier of natural-disaster risk nationally. The score blends Expected Annual Loss, Social Vulnerability, and Community Resilience across all 18 FEMA hazard types.
Most of Essex County's expected losses come from heat wave (prolonged periods of extreme heat that threaten health and infrastructure) at High risk — $19M in expected annual loss and about 9.26 events per year; riverine flood (rivers and streams overflowing their banks after heavy rain or snowmelt) at High risk — $149M in expected annual loss and about 3.07 events per year; and strong wind (damaging straight-line winds outside of tornadoes and hurricanes) at Very High risk — $5M in expected annual loss and about 6.36 events per year. Across all hazards, FEMA estimates $214M in expected annual loss for a population of 863K.
Beyond physical exposure, Essex County has a very high social vulnerability rating (how susceptible the population is to harm) and a low community resilience rating (its capacity to prepare for and recover from disasters). That combination — a more vulnerable population with limited resilience — can amplify the human cost of any given event.
The county's disaster history tells the same story: Essex County has received 33 federal disaster declarations since 1965, including 10 for hurricane events and 6 for severe storm events. The most recent was Remnants of Hurricane Ida (hurricane), declared in September 2021.
Among 21 New Jersey counties, Essex County ranks #3 for overall natural disaster risk.
Top Hazards
All 18 Hazard Risks
| Heat Wave | High | 9.26 / yr | $19M |
| Riverine Flood | High | 3.07 / yr | $149M |
| Strong Wind | Very High | 6.36 / yr | $5M |
| Winter Weather | Very High | 11.30 / yr | $697K |
| Earthquake | Medium | 0.00 / yr | $12M |
| Cold Wave | High | 0.57 / yr | $9M |
| Tornado | High | 0.05 / yr | $8M |
| Lightning | High | 31.99 / yr | $995K |
| Hurricane | Medium | 0.11 / yr | $8M |
| Hail | Medium | 2.42 / yr | $981K |
| Ice Storm | Medium | 0.74 / yr | $265K |
| Coastal Flood | Medium | 3.76 / yr | $556K |
| Landslide | Very Low | 0.08 / yr | $988 |
| Drought | Very Low | 2.96 / yr | $10K |
| Wildfire | Very Low | 0.00 / yr | $2K |
| Avalanche | Very Low | 0.00 / yr | $0 |
| Tsunami | Very Low | 0.00 / yr | $0 |
| Volcanic Activity | Very Low | 0.00 / yr | $0 |
Disaster History
Essex County has received 33 federal disaster declarations since 1965, most recently Remnants of Hurricane Ida in September 2021. Most frequent causes: Hurricane (10), Severe Storm (6), Flood (6).
| Declared | Type | Disaster |
|---|---|---|
| September 2021 | Hurricane | Remnants of Hurricane Ida |
| September 2021 | Hurricane | Remnants of Hurricane Ida |
| December 2020 | Hurricane | Tropical Storm Isaias |
| March 2020 | Biological | Covid-19 Pandemic |
| March 2020 | Biological | Covid-19 |
| June 2018 | Severe Storm | Severe Winter Storm and Snowstorm |
| March 2016 | Severe Storm | Severe Winter Storm and Snowstorm |
| October 2012 | Hurricane | Hurricane Sandy |
| October 2012 | Hurricane | Hurricane Sandy |
| November 2011 | Severe Storm | Severe Storm |
Showing the 10 most recent of 33 declarations.
Source: FEMA Disaster Declarations Summaries (OpenFEMA).
Frequently Asked Questions
What is the overall natural disaster risk for Essex County?
Essex County has a composite FEMA National Risk Index score of 97.7 out of 100, placing it in the High category and the 98th national percentile. This combines Expected Annual Loss, Social Vulnerability, and Community Resilience across 18 hazard types.
What are the top natural hazards in Essex County?
The three highest-rated hazards are Heat Wave (High, $19M EAL), Riverine Flood (High, $149M EAL), Strong Wind (Very High, $5M EAL). These account for most of the county's expected annual losses.
How does Essex County compare to other New Jersey counties?
Essex County ranks #3 of 21 New Jersey counties for overall natural disaster risk, with a high rating.
How many federally declared disasters has Essex County had?
FEMA records 33 federal disaster declarations for Essex County since 1965, most often 10 for hurricane events and 6 for severe storm events. The most recent was Remnants of Hurricane Ida, declared in September 2021.
What does Expected Annual Loss (EAL) mean?
EAL is FEMA's estimate of average annual dollar losses from natural hazards, calculated from historical event data and exposure models. Essex County's $214M EAL is a statistical average, not a guarantee for any specific year or address.