FEMA NRI 1.19.0Updated Nov 2023 · Coverage 2014–2023Methodology

Connecticut Disaster Risk

Natural disaster risk data for all 9 counties.

Avg FEMA Rating

Relatively Moderate

Avg Percentile

88th

Counties with Data

of 9 total

County risk atlas

Connecticut hazard exposure by county

A compact 2.5D surface of FEMA National Risk Index percentiles. Toggle composite, flood, wildfire, hurricane, tornado, and earthquake risk to see which counties carry the highest relative exposure without loading the full national explorer dataset.

Counties

9/9

Avg composite

88th

Risk layers

Highest Risk Counties

Capitol Planning Region

Relatively High

97th percentile

Western Connecticut Planning Region

Relatively High

96th percentile

South Central Connecticut Planning Region

Relatively High

95th percentile

Naugatuck Valley Planning Region

Relatively Moderate

93th percentile

Greater Bridgeport Planning Region

Relatively Moderate

92th percentile

Lowest Risk Counties

Northeastern Connecticut Planning Region

Relatively Low

63th percentile

Northwest Hills Planning Region

Relatively Low

80th percentile

Lower Connecticut River Valley Planning Region

Relatively Moderate

84th percentile

Southeastern Connecticut Planning Region

Relatively Moderate

89th percentile

Greater Bridgeport Planning Region

Relatively Moderate

92th percentile

All Connecticut Counties

County	Percentile	FEMA Rating	Flood	Wildfire	Tornado	Earthquake
Capitol Planning Region	97th	Relatively High	99.0	56.9	90.5	93.5
Western Connecticut Planning Region	96th	Relatively High	98.1	46.2	69.2	92.0
South Central Connecticut Planning Region	95th	Relatively High	96.9	41.2	78.0	91.5
Naugatuck Valley Planning Region	93th	Relatively Moderate	96.3	47.7	73.1	86.1
Greater Bridgeport Planning Region	92th	Relatively Moderate	94.8	23.9	41.7	86.4
Southeastern Connecticut Planning Region	89th	Relatively Moderate	91.8	39.4	53.1	80.9
Lower Connecticut River Valley Planning Region	84th	Relatively Moderate	90.3	43.6	43.3	74.8
Northwest Hills Planning Region	80th	Relatively Low	88.0	39.9	42.9	66.3
Northeastern Connecticut Planning Region	63th	Relatively Low	75.2	22.9	28.3	61.4

Frequently Asked Questions

Which county in Connecticut has the highest natural disaster risk?

Capitol Planning Region has the highest natural disaster risk in Connecticut, rated Relatively High (97th percentile nationally), based on FEMA National Risk Index data.

Which county in Connecticut is the safest from natural disasters?

Northeastern Connecticut Planning Region has the lowest natural disaster risk in Connecticut, rated Relatively Low (63th percentile nationally), based on FEMA NRI data.

What natural disasters are most common in Connecticut?

Connecticut counties face varying levels of risk from floods, wildfires, tornadoes, earthquakes, and hurricanes. The FEMA National Risk Index scores each county across 18 hazard types. See individual county pages for detailed hazard breakdowns.

How is natural disaster risk measured by county?

The FEMA National Risk Index (NRI) measures natural disaster risk using expected annual loss, social vulnerability, and community resilience. Scores are normalized nationally, with ratings from Very Low to Very High across 18 natural hazard types.

Prepare your household for natural disasters

FEMA's Ready.gov provides county-specific preparedness checklists and emergency planning guides.

FEMA Ready Guide →

Data Source

Risk data sourced from the FEMA National Risk Index (NRI). Risk scores are relative rankings (0–100) across all US counties — not absolute risk measures. Higher scores indicate higher relative risk compared to other counties.

Disclaimer: This data is informational only. It is not financial, insurance, or legal advice. Always consult a qualified professional before making insurance or real estate decisions.

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