Gregory County, South Dakota
FEMA National Risk Index threat assessment for Gregory County.
Threat Level
Moderate
NRI Composite Score
7.0
Social Vulnerability
47.8
Community Resilience
56.9
Top Hazards
Cold Wave
33.7
Relatively High
Winter Weather
16.3
Relatively Moderate
Ice Storm
15.6
Relatively Low
Hail
15.2
Relatively Moderate
Tornado
12.7
Relatively Low
Landslide
10.9
Relatively Low
Strong Wind
10.9
Relatively Low
Drought
10.1
Relatively Low
Lightning
6.4
Very Low
Heat Wave
5.2
Relatively Low
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