Snohomish County, Washington
FEMA National Risk Index threat assessment for Snohomish County.
Threat Level
High
NRI Composite Score
18.8
Social Vulnerability
23.5
Community Resilience
54.3
Top Hazards
Volcanic Activity
53.6
Relatively High
Avalanche
28.9
Relatively Moderate
Landslide
25.6
Relatively High
Coastal Flooding
24.9
Relatively Moderate
Earthquake
17.6
Relatively Moderate
Lightning
11.8
Relatively Low
Tornado
9.1
Relatively Low
Ice Storm
8.3
Very Low
Heat Wave
7.4
Relatively Low
Winter Weather
6.9
Very Low
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