United States
Earthquakes in Pennsylvania
ShareUSGS has not recorded an earthquake in and around Pennsylvania in the last 30 days. The largest ever recorded here is M 4.8, 2024 Tewksbury, New Jersey Earthquake, on 2024-04-05.
Nothing recorded in the last 30 days
USGS logged 14 events here in the last year. The historical record is below.
Recent earthquakes in and around Pennsylvania
USGS has not located an earthquake in and around Pennsylvania in the last 30 days. That is normal for this area: it recorded 14 in the last year.
The largest on record in and around Pennsylvania
Since 1900, when the instrumental record becomes usable. The largest is M 4.8 at 2024 Tewksbury, New Jersey Earthquake on 2024-04-05: light: noticeable shaking, minor damage possible.
Largest since 1900 USGS
| Magnitude | Location | Date | Depth |
|---|---|---|---|
| M 4.8 | 2024 Tewksbury, New Jersey Earthquake | 2024-04-05 | 2.6 km deep |
| M 4.6 | 2 km W of Sinking Spring, Pennsylvania | 1994-01-16 | 5.0 km deep |
| M 4.5 | 2 km SW of Adamsville, Pennsylvania | 1998-09-25 | 5.0 km deep |
| M 4.5 | 2 km N of Cornwall, Pennsylvania | 1964-05-12 | 1.0 km deep |
| M 4.2 | 0 km E of Sinking Spring, Pennsylvania | 1994-01-16 | 5.0 km deep |
| M 4.2 | 2 km SSW of Conestoga, Pennsylvania | 1984-04-23 | 5.0 km deep |
How these numbers were counted
Counts include every earthquake of magnitude 1.0 and above that USGS located in and around Pennsylvania. The search is a latitude and longitude rectangle covering Pennsylvania. No region is a rectangle, so events just outside the border can appear; each row shows the location text USGS published, which names the nearest town. Full method, including why counts from different places are not comparable.
Source: USGS Earthquake Hazards Program (FDSN event service). Retrieved 2026-08-10. Public domain.