Earthquakes by state
From Oct 28, 2025 to Oct 28, 2026, the USGS catalog lists 12,449 earthquakes of magnitude 2.5 or greater in or near U.S. states and Puerto Rico. The busiest were Alaska (8,821), California (1,022), Puerto Rico (795), Nevada (344), New Mexico (335). 19 had none.
Snapshot of the USGS FDSN event service, taken Oct 28, 2026. A state is matched from the place name the USGS gives each event, so offshore quakes "off the coast of" a state are counted with that state.
| State | Quakes | Largest | Most recent | River gauges |
|---|---|---|---|---|
| Alabama | 1 | M 2.5, 12 km NNE of Trinity, Alabama | Apr 26, 2026 | 2 |
| Alaska | 8,821 | M 6.5, 170 km W of Nikolski, Alaska | Oct 28, 2026 | 3 |
| Arizona | 5 | M 3.7, 20 km SSW of Chilchinbito, Arizona | Apr 7, 2026 | 3 |
| Arkansas | 0 | — | — | 3 |
| California | 1,022 | M 5.6, 11 km N of Redwood Valley, CA | Oct 27, 2026 | 3 |
| Colorado | 32 | M 4.1, 18 km SSW of Weston, Colorado | Oct 25, 2026 | 2 |
| Connecticut | 0 | — | — | 3 |
| Delaware | 0 | — | — | 3 |
| District of Columbia | 0 | — | — | — |
| Florida | 2 | M 3.9, 168 km ENE of Flagler Beach, Florida | Jul 28, 2026 | 3 |
| Georgia | 0 | — | — | 3 |
| Hawaii | 304 | M 6.0, 13 km S of Honaunau-Napoopoo, Hawaii | Oct 27, 2026 | 3 |
| Idaho | 33 | M 3.8, 8 km W of Bennington, Idaho | Oct 16, 2026 | 3 |
| Illinois | 4 | M 3.8, 4 km NW of Ohlman, Illinois | Oct 16, 2026 | 3 |
| Indiana | 0 | — | — | 3 |
| Iowa | 0 | — | — | 3 |
| Kansas | 25 | M 3.7, 10 km SW of Gypsum, Kansas | Oct 15, 2026 | 3 |
| Kentucky | 2 | M 3.1, 11 km ENE of Lancaster, Kentucky | Jan 4, 2026 | 3 |
| Louisiana | 24 | M 4.9, 2026 Red River Parish, Louisiana Earthquake | Sep 25, 2026 | 3 |
| Maine | 0 | — | — | 3 |
| Maryland | 0 | — | — | 3 |
| Massachusetts | 0 | — | — | 3 |
| Michigan | 1 | M 2.7, 8 km N of Maybee, Michigan | May 4, 2026 | 3 |
| Minnesota | 3 | M 3.3, 3 km SW of Babbitt, Minnesota | Jul 2, 2026 | 3 |
| Mississippi | 0 | — | — | 2 |
| Missouri | 7 | M 4.0, 1 km WNW of Cooter, Missouri | Aug 4, 2026 | 3 |
| Montana | 32 | M 4.2, 9 km N of Black Eagle, Montana | Oct 4, 2026 | 6 |
| Nebraska | 6 | M 4.1, 4 km E of Cowles, Nebraska | May 11, 2026 | 3 |
| Nevada | 344 | M 5.7, 20 km ESE of Silver Springs, Nevada | Oct 20, 2026 | 3 |
| New Hampshire | 0 | — | — | 3 |
| New Jersey | 0 | — | — | 3 |
| New Mexico | 335 | M 4.4, 9 km SSW of Atoka, New Mexico | Oct 26, 2026 | 3 |
| New York | 2 | M 2.8, 28 km WSW of Henderson, New York | Apr 25, 2026 | 3 |
| North Carolina | 1 | M 2.7, 10 km SSW of Dillsboro, North Carolina | Mar 23, 2026 | 3 |
| North Dakota | 1 | M 2.6, 2 km SE of Amidon, North Dakota | Aug 13, 2026 | 3 |
| Ohio | 3 | M 2.9, 3 km SW of Madison, Ohio | Mar 5, 2026 | 3 |
| Oklahoma | 41 | M 3.6, 7 km ENE of Calumet, Oklahoma | Oct 17, 2026 | 3 |
| Oregon | 17 | M 3.3, 36 km E of Bonanza, Oregon | Oct 22, 2026 | 4 |
| Pennsylvania | 0 | — | — | 3 |
| Puerto Rico | 795 | M 4.8, 5 km SW of Guánica, Puerto Rico | Oct 27, 2026 | 2 |
| Rhode Island | 0 | — | — | 3 |
| South Carolina | 4 | M 3.0, 5 km WSW of Irmo, South Carolina | Feb 26, 2026 | 3 |
| South Dakota | 1 | M 2.7, 5 km ENE of Artesian, South Dakota | Jan 9, 2026 | 3 |
| Tennessee | 3 | M 2.7, 7 km SE of Ridgely, Tennessee | May 15, 2026 | 2 |
| Texas | 284 | M 5.0, 38 km SSE of Spearman, Texas | Oct 27, 2026 | 3 |
| Utah | 60 | M 4.0, 29 km ENE of Torrey, Utah | Oct 24, 2026 | 3 |
| Vermont | 0 | — | — | 3 |
| Virginia | 0 | — | — | 3 |
| Washington | 37 | M 4.2, 6 km WNW of Wauna, Washington | Oct 25, 2026 | 3 |
| West Virginia | 0 | — | — | 3 |
| Wisconsin | 0 | — | — | 3 |
| Wyoming | 197 | M 4.7, 40 km S of Evanston, Wyoming | Oct 25, 2026 | 3 |
Source: USGS ANSS Comprehensive Catalog (ComCat) via the FDSN event web service.
Why some states have so many
Alaska sits on the boundary where the Pacific Plate dives under the North American Plate and records more earthquakes than the rest of the country combined. California and Nevada sit along the San Andreas fault system and the Basin and Range region. Hawaii's quakes are tied to its active volcanoes, and Puerto Rico lies near the Caribbean plate boundary. In parts of Oklahoma, Texas, and Kansas, many quakes have been linked to deep wastewater injection.
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