CT
Connecticut
Comprehensive climate risk and disaster history profile
19
Billion-Dollar Events
$9.1B
Total Economic Impact
8
Counties
83.28
Avg Risk Score
Top Natural Hazards
Based on FEMA National Risk Index data across all 8 counties
Tropical Cyclone
91.38
Avg Risk Score
ISTM
89.84
Avg Risk Score
LNDS
86.93
Avg Risk Score
Lightning
82.14
Avg Risk Score
Drought
80.75
Avg Risk Score
CFLD
75.77
Avg Risk Score
Disaster Type Breakdown
Historical billion-dollar events by category (1980-2024)
Winter Storm
9 events
$1.1B
Severe Storm
5 events
$0.5B
Tropical Cyclone
4 events
$7.2B
Flooding
1 events
$0.3B
Disaster Trends by Decade
How disaster frequency and costs have changed over time
Highest Risk Counties
Counties with the highest overall risk scores based on FEMA NRI
| Rank | County | Risk Score | Risk Rating | SVI Percentile |
|---|---|---|---|---|
| 1 | Fairfield | 95.45 | 6184.0% | |
| 2 | New Haven | 94.46 | 6512.0% | |
| 3 | Hartford | 91.47 | 5955.0% | |
| 4 | New London | 87.37 | 3959.0% | |
| 5 | Litchfield | 82.5 | 1512.0% | |
| 6 | Middlesex | 78.36 | 1843.0% | |
| 7 | Windham | 69.52 | 4799.0% | |
| 8 | Tolland | 67.07 | 1073.0% |
Recent Major Events
Most costly billion-dollar disasters in the past 10 years
Severe Storm
Feb 2019
$0.1B
Severe Storm
May 2018
$0.1B
Winter Storm
Mar 2018
$0.2B
1 fatalities
Winter Storm
Jan 2018
$0.1B
1 fatalities
Severe Storm
Feb 2016
$0.1B
Severe Storm
Jun 2015
$0.1B
Winter Storm
Feb 2015
$0.2B
1 fatalities
Tropical Cyclone
Oct 2012
$5.0B
12 fatalities
Winter Storm
Oct 2011
$0.2B
Tropical Cyclone
Sep 2011
$0.2B
1 fatalities
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