Alaska vs Montana Earthquake Risk

Side-by-side comparison of earthquake risk profiles

Which state has higher earthquake risk?

Alaska has a higher earthquake risk with a score of 10/10 (Very High) compared to Montana at 6/10 (Moderate-High). This is a significant difference in seismic hazard.

Risk Score Comparison

Alaska10/10

Montana6/10

Risk Level

Alaska

Very High

Montana

Moderate-High

Detailed Comparison

Metric	Alaska	Montana
Risk Score	10/10	6/10
Risk Level	Very High	Moderate-High
Annual Earthquake Rate	12,000/yr	150/yr
Population at Risk	95%	50%
Major Faults	Alaska-Aleutian subduction zone, Denali Fault	Intermountain Seismic Belt, Lewis & Clark zone
Notable Earthquake	1964 Great Alaska (M9.2)	1959 Hebgen Lake (M7.3)

Major Fault Systems

Alaska

●Alaska-Aleutian subduction zone
●Denali Fault

Montana

●Intermountain Seismic Belt
●Lewis & Clark zone

View Alaska Full Profile View Montana Full Profile

Frequently Asked Questions

Which state has higher earthquake risk, Alaska or Montana?

Alaska has a higher earthquake risk with a score of 10/10 (Very High) compared to Montana at 6/10 (Moderate-High). This means Alaska faces more frequent and potentially more destructive seismic events.

How do annual earthquake rates compare between Alaska and Montana?

Alaska averages approximately 12,000 earthquakes per year, while Montana averages about 150 per year. Alaska experiences roughly 11,850 more earthquakes annually.

What major fault systems exist in Alaska vs Montana?

Alaska is associated with Alaska-Aleutian subduction zone, Denali Fault. Montana is associated with Intermountain Seismic Belt, Lewis & Clark zone. These fault systems determine the type and frequency of seismic activity each state experiences.

How does population at risk compare between Alaska and Montana?

In Alaska, approximately 95% of the population lives in areas at risk from earthquakes, compared to 50% in Montana. Alaska has a larger percentage of residents exposed to seismic hazard.

What are the most notable earthquakes in Alaska and Montana?

Alaska's most notable earthquake: 1964 Great Alaska (M9.2). Montana's most notable earthquake: 1959 Hebgen Lake (M7.3). These historical events illustrate the seismic potential of each state.

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Metric

Alaska

Montana

Risk Score

10/10

6/10

Risk Level

Very High

Moderate-High

Annual Earthquake Rate

12,000/yr

150/yr

Population at Risk

95%

50%

Major Faults

Alaska-Aleutian subduction zone, Denali Fault

Intermountain Seismic Belt, Lewis & Clark zone

Notable Earthquake

1964 Great Alaska (M9.2)

1959 Hebgen Lake (M7.3)

Frequently Asked Questions

Which state has higher earthquake risk, Alaska or Montana?

How do annual earthquake rates compare between Alaska and Montana?

Alaska averages approximately 12,000 earthquakes per year, while Montana averages about 150 per year. Alaska experiences roughly 11,850 more earthquakes annually.

What major fault systems exist in Alaska vs Montana?

How does population at risk compare between Alaska and Montana?

In Alaska, approximately 95% of the population lives in areas at risk from earthquakes, compared to 50% in Montana. Alaska has a larger percentage of residents exposed to seismic hazard.

What are the most notable earthquakes in Alaska and Montana?

Alaska's most notable earthquake: 1964 Great Alaska (M9.2). Montana's most notable earthquake: 1959 Hebgen Lake (M7.3). These historical events illustrate the seismic potential of each state.