NH
New Hampshire
Comprehensive climate risk and disaster history profile
12
Billion-Dollar Events
$7.2B
Total Economic Impact
10
Counties
61.6
Avg Risk Score
Top Natural Hazards
Based on FEMA National Risk Index data across all 10 counties
ISTM
84.27
Avg Risk Score
Tropical Cyclone
80.15
Avg Risk Score
Lightning
79.91
Avg Risk Score
LNDS
75.81
Avg Risk Score
AVLN
69.71
Avg Risk Score
Flooding
68.57
Avg Risk Score
Disaster Type Breakdown
Historical billion-dollar events by category (1980-2024)
Winter Storm
9 events
$1.6B
Tropical Cyclone
2 events
$5.5B
Severe Storm
1 events
$0.1B
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 | Hillsborough | 88.58 | 2543.0% | |
| 2 | Rockingham | 83.96 | 261.0% | |
| 3 | Merrimack | 74.39 | 2215.0% | |
| 4 | Grafton | 66.4 | 2969.0% | |
| 5 | Strafford | 62.68 | 2651.0% | |
| 6 | Cheshire | 60.29 | 2237.0% | |
| 7 | Carroll | 59.34 | 1318.0% | |
| 8 | Belknap | 47.09 | 1830.0% | |
| 9 | Coos | 41.46 | 5080.0% | |
| 10 | Sullivan | 31.82 | 1219.0% |
Recent Major Events
Most costly billion-dollar disasters in the past 10 years
Winter Storm
Feb 2023
$0.6B
Winter Storm
Mar 2018
$0.2B
1 fatalities
Winter Storm
Jan 2018
$0.1B
1 fatalities
Winter Storm
Feb 2015
$0.2B
1 fatalities
Tropical Cyclone
Oct 2012
$5.0B
12 fatalities
Severe Storm
Apr 2007
$0.1B
Tropical Cyclone
Sep 1999
$0.5B
5 fatalities
Winter Storm
Jan 1999
$0.1B
Winter Storm
Jan 1998
$0.3B
4 fatalities
Winter Storm
Jan 1994
$0.1B
3 fatalities
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