FEMA relative scores

Volcanic Activity Risk Rankings

The highest relative volcanic activity scores among FEMA county-equivalent areas represented in the city directory.

One FEMA area can contain several covered cities. Each area appears once below, with links to its city pages. The score is a relative comparison measure, not the annual chance of a volcanic activity.

  1. #1
    Very High

    100.0

    relative score

  2. #2

    Pierce County, WA

    Tacoma
    Very High

    98.9

    relative score

  3. #3

    Clark County, WA

    Vancouver
    Very High

    97.8

    relative score

  4. #4

    Thurston County, WA

    Olympia
    Relatively High

    95.5

    relative score

  5. #5

    Snohomish County, WA

    EverettMarysville
    Relatively High

    94.4

    relative score

  6. #6

    Multnomah County, OR

    GreshamPortland
    Relatively High

    91.0

    relative score

  7. #7

    Yakima County, WA

    Yakima
    Relatively High

    88.8

    relative score

  8. #8

    Shasta County, CA

    Redding
    Relatively High

    87.6

    relative score

  9. #9

    Whatcom County, WA

    Bellingham
    Relatively High

    86.5

    relative score

  10. #10

    Washington County, OR

    BeavertonHillsboro
    Relatively High

    85.4

    relative score

  11. #11

    Kitsap County, WA

    Bremerton
    Relatively Moderate

    73.0

    relative score

  12. #12

    Butte County, CA

    Chico
    Relatively Moderate

    71.9

    relative score

  13. #13

    Jackson County, OR

    Medford
    Relatively Moderate

    69.7

    relative score

  14. #14

    Madera County, CA

    Madera
    Relatively Low

    53.9

    relative score

  15. #15

    Marion County, OR

    Salem
    Relatively Low

    51.7

    relative score

  16. #16

    Fresno County, CA

    ClovisFresno
    Very Low

    29.2

    relative score

  17. #17

    Anchorage Municipality, AK

    Anchorage
    No Rating

    0.0

    relative score

  18. #17

    Honolulu County, HI

    HonoluluKailua
    No Rating

    0.0

    relative score

Other hazard rankings

AvalancheCoastal FloodingCold WaveDroughtEarthquakeHailHeat WaveHurricaneIce StormLandslideLightningRiverine FloodingStrong WindTornadoTsunamiWildfireWinter Weather

Source: FEMA National Risk Index v1.19.0, released March 2023. Hazard figures cover FEMA county-equivalent areas.

Read the methodology →