Massachusetts vs Oklahoma Earthquake Risk

Oklahoma has a higher earthquake risk with a score of 5/10 (Moderate) compared to Massachusetts at 3/10 (Low-Moderate). This means Oklahoma faces more frequent and potentially more destructive seismic events.

Massachusetts averages approximately 5 earthquakes per year, while Oklahoma averages about 100 per year. Oklahoma experiences roughly 95 more earthquakes annually.

Massachusetts is associated with Cape Ann seismic zone. Oklahoma is associated with Induced seismicity from wastewater injection. These fault systems determine the type and frequency of seismic activity each state experiences.

In Massachusetts, approximately 10% of the population lives in areas at risk from earthquakes, compared to 40% in Oklahoma. Oklahoma has a larger percentage of residents exposed to seismic hazard.

Massachusetts's most notable earthquake: 1755 Cape Ann (M6.0). Oklahoma's most notable earthquake: 2016 Pawnee (M5.8). These historical events illustrate the seismic potential of each state.