riskbycounty
FEMA NRI v1.20Released December 2025Methodology

Suffolk County Disaster Risk

Suffolk County, New York

FEMA Risk Rating

Relatively High

NRI score (0–100 relative scale)

97.3

FEMA composite county value

State Rank

#6

of 62, sorted high to low by RiskByCounty

Flood NRI score

98.6

higher coastal/inland value

Hazard Risk Breakdown

Five selected hazard categories out of FEMA's 18. Values are FEMA NRI v1.20 scores on a 0–100 relative scale.

Flood

98.6 / 100

Higher of FEMA Coastal Flooding (98.6) and Inland Flooding (98.3) NRI scores.

Hurricane

96.8 / 100

Earthquake

95.9 / 100

Tornado

74.7 / 100

Wildfire

73.4 / 100

FEMA NRI data summary

Selected hazard scores for Suffolk County

Among the five hazard categories displayed by RiskByCounty, flood has the highest NRI score for this county.

Flood
98.6
Hurricane
96.8
Earthquake
95.9
Tornado
74.7
Wildfire
73.4

Higher of FEMA Coastal Flooding and Inland Flooding NRI scores

Displayed flood score
98.6
Coastal Flooding
98.6
Inland Flooding
98.3

These five categories are a selected subset of FEMA's 18 natural hazards. FEMA's composite score and official rating are separate fields in the National Risk Index dataset.

FEMA National Risk Index documentation

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Frequently Asked Questions

How many New York county records are included?
RiskByCounty includes 62 New York county records from FEMA NRI v1.20 (December 2025).
Which FEMA county ratings appear in New York?
FEMA NRI v1.20 (December 2025) county rating counts for New York: Very Low: 8; Relatively Low: 31; Relatively Moderate: 15; Relatively High: 8; Very High: 0; Not available: 0.
How complete are the five selected hazard fields for New York?
FEMA NRI v1.20 (December 2025) availability among 62 county records: Flood: 62 of 62; Wildfire: 62 of 62; Tornado: 62 of 62; Earthquake: 62 of 62; Hurricane: 62 of 62. RiskByCounty displays five selected hazard categories out of FEMA's 18.
What FEMA NRI information is available for Suffolk County, NY?
Suffolk County has an official FEMA NRI v1.20 composite rating of Relatively High and an NRI score (0–100 relative scale) of 97.3. RiskByCounty ranks it 6th of 62 New York county records when sorting the FEMA composite NRI scores from high to low.
Which selected hazard scores are shown for Suffolk County?
RiskByCounty displays five selected hazard categories out of FEMA's 18 using FEMA NRI v1.20 (December 2025). For Suffolk County, Flood: 98.6; Hurricane: 96.8; Earthquake: 95.9; Tornado: 74.7; Wildfire: 73.4.
How is flood displayed for Suffolk County?
RiskByCounty's flood display is the higher of FEMA Coastal Flooding and Inland Flooding NRI scores. For Suffolk County, Coastal Flooding is 98.6, Inland Flooding is 98.3, and the displayed flood score is 98.6.

Counties with Similar Risk

Nassau County

New York

-0.2

Relatively High

NRI score 97.1

Erie County

New York

+0.3

Relatively High

NRI score 97.7

Bronx County

New York

+1.0

Relatively High

NRI score 98.3

Published by RiskByCounty

County summaries are deterministic transformations of frozen FEMA county fields. No external subject-matter reviewer is credited.

Published · Updated

Data Source

County data sourced from FEMA National Risk Index v1.20, released December 2025. Values are labeled NRI score (0–100 relative scale). RiskByCounty displays five selected hazard categories out of FEMA's 18; flood is the higher of the Coastal Flooding and Inland Flooding source scores.

RiskByCounty presents county-level source fields and deterministic arithmetic summaries.

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