Earthquakes in Suffolk County, Massachusetts
← Earthquakes in Massachusetts
The most recent earthquake of M2.5 or more near Suffolk County was M 3.8, 9 km SE of York Harbor, Maine, 89 km (55 mi) NNE of the centre of Suffolk County, at 10:22 am EST on 27 January 2025, 11 km deep. 42,440 people reported feeling it to USGS. The estimated shaking at the centre of Suffolk County was intensity III (weak), felt by some people at rest indoors. 11 smaller earthquakes have been recorded near Suffolk County since.
No earthquake of M1.5 or more was recorded within 100 km (62 mi) of the centre of Suffolk County in the last 24 hours.
- Last 24 hours
- 0
- Last 7 days
- 0
- Last 30 days
- 0 · since 2016, about one every 3 months
- Last 12 months
- 5 · largest M 2.1 on 2 January 2026
- Since 2016
- 42 earthquakes of M1.5 or more
- Largest since 2016
- M 3.8 on 27 January 2025, 9 km SE of York Harbor, Maine
- Nearest mapped fault
- Newbury liquefaction features, 48 km from the centre to its surface trace
Latest quake, 24 hours and 7 days: the QuakeIndex database, which reads USGS every 30 seconds, read at ; 30 days and 12 months: the QuakeIndex catalogue, counted to · earthquakes of M1.5 or more within 100 km (62 mi) of the centre of Suffolk County · shaking is estimated for the centre with the intensity equation USGS Did You Feel It? uses
Every earthquake in Massachusetts in the last 24 hours →
Earthquakes are rare here
41 earthquakes of M1.5 or larger have been recorded within 100 km in 10 years, and most weeks have none. There have been none in the last 7 days.
With so few, a QuakeIndex score — this week as a percentile of Suffolk County, Massachusetts's own weeks — would only say whether anything happened at all, so none is shown. That is a statement about Suffolk County, Massachusetts, not about our data.
USGS catalogue · updated
If you felt one
- Was that an earthquake? — checks what was recorded near you in the last hour
- Report what you felt to USGS — reports go to USGS, not to us, and they are what produces the intensity maps
- Expect aftershocks, and be ready to Drop, Cover, and Hold On if you feel one; if you are in a damaged building, go outside and move away from it (Ready.gov, FEMA; what to do during and after an earthquake)
QuakeIndex does not issue warnings or forecasts. For earthquake early warning see ShakeAlert and the MyShake app.
The last 30 days
Show these earthquakes on your own site: a free card with this strip and the latest quakes near Suffolk County, Massachusetts, for a local news site, school or neighborhood page.
Live · last 7 days
Latest earthquakes within 100 km
None within 100 km in the latest snapshot we hold; the full 7 days load from USGS as this page opens.
Source USGS · snapshot of
The last 7 days on the map
Open the full map — zoom anywhere, or find your own location →
The centre is 42.339, -71.018, the Census internal point of Suffolk County, Massachusetts from the US Census Bureau Gazetteer (2024). Activity on this page is measured within 100 km of it — the dashed circle.
Largest on record nearby
The strongest shaking this record implies at the centre of Suffolk County, Massachusetts is intensity III (weak), from the M 3.8 of 2025, 89 km away. At that level a few people indoors notice it; most do not.
| Magnitude | When | Where | Shaking here (est.) |
|---|---|---|---|
| M 3.8 | 9 km SE of York Harbor, Maine · felt by 42,440 | III · Weak | |
| M 3.6 | 10 km S of Bliss Corner, Massachusetts · felt by 19,622 | II · Weak | |
| M 2.7 | 0 km SE of East Kingston, New Hampshire · felt by 1,554 | II · Weak | |
| M 2.3 | 54 km E of Rockport, Massachusetts · felt by 9 | II · Weak | |
| M 2.2 | 2 km W of Gardner, Massachusetts · felt by 89 | I · Not felt | |
| M 2.2 | 50 km ENE of Rockport, Massachusetts | I · Not felt | |
| M 2.2 | 2 km W of Bedford, New Hampshire · felt by 369 | I · Not felt | |
| M 2.1 | 1 km W of North Plymouth, Massachusetts · felt by 48 | II · Weak |
From the QuakeIndex catalogue, built from the USGS FDSN event service · within 100 km of the centre above. Shaking is an estimate for the centre from magnitude, depth and distance, with the intensity equation USGS Did You Feel It? uses (Atkinson & Wald, 2007), on the Modified Mercalli scale. Ground conditions change it locally; it is a description of the past, not a hazard rating.
Before 2016
The USGS record from 1900 to 2015 lists no earthquake of M5 or more within 100 km of the centre of Suffolk County, Massachusetts.
USGS ComCat, M5+ from 1900 to 2015. Epicentres of early earthquakes are estimates. This is the record, not a forecast.
Nearest mapped faults
- Newbury liquefaction features, 48 km from the centre of Suffolk County, Massachusetts to its surface trace
USGS Quaternary Fault and Fold Database, within 50 km. Near is not the same as on, and faults with no surface trace are not in it.
Be ready
Earthquakes cannot be predicted, here or anywhere, so the useful step is the one taken beforehand. The advice below is from the agencies responsible for it.
- Ready.gov: earthquakes (FEMA) — what to do before, during and after, including Drop, Cover, and Hold On
- Build a kit (FEMA) — water, food and supplies for several days; our summary
- USGS: preparedness — the hazard behind the advice, from the agency that records every quake on this page
- The Great ShakeOut — the yearly earthquake drill, with material for homes, schools and workplaces