Riskiest Counties for Volcanic Activity

Ranked by FEMA National Risk Index volcanic activity hazard score · code VLCN

County Rankings

#CountyStateVolcanic Activity ScoreRatingAnn. Freq.Ann. Loss
1Hawaii CountyHI
100.0
Very High 0.02 / yr$26M
2Cowlitz CountyWA
99.7
High 0.01 / yr$8M
3Pierce CountyWA
99.3
High 0.01 / yr$7M
4Skagit CountyWA
99.0
High 0.00 / yr$3M
5Aleutians West Census AreaAK
98.7
High 0.16 / yr$3M
6Maui CountyHI
98.4
High 0.00 / yr$2M
7Siskiyou CountyCA
98.0
High 0.00 / yr$2M
8Aleutians East BoroughAK
97.7
High 0.08 / yr$895K
9King CountyWA
97.4
High 0.01 / yr$2M
10Skamania CountyWA
97.1
High 0.01 / yr$2M
11Lake CountyCA
96.7
Medium 0.00 / yr$484K
12Snohomish CountyWA
96.4
Medium 0.01 / yr$675K
13Deschutes CountyOR
96.1
Medium 0.00 / yr$554K
14Clackamas CountyOR
95.8
Medium 0.01 / yr$495K
15Hood River CountyOR
95.4
Medium 0.01 / yr$491K
16Lewis CountyWA
95.1
Medium 0.01 / yr$287K
17Shasta CountyCA
94.8
Medium 0.00 / yr$245K
18Lane CountyOR
94.5
Medium 0.01 / yr$197K
19Thurston CountyWA
94.1
Medium 0.01 / yr$195K
20Sitka City and BoroughAK
93.8
Medium 0.00 / yr$141K
21Multnomah CountyOR
93.5
Medium 0.01 / yr$159K
22Whatcom CountyWA
93.2
Medium 0.00 / yr$128K
23Marion CountyOR
92.8
Medium 0.01 / yr$84K
24Tehama CountyCA
92.5
Low 0.00 / yr$58K
25Klickitat CountyWA
92.2
Low 0.01 / yr$31K

Showing the top 25 seeded counties for volcanic activity risk.