Earthquakes in Connecticut
Too few earthquakes here to say what is "normal"
Only 41 earthquakes of M1.5 or largerhave been recorded in Connecticut in the 10 years of record we hold, and most weeks have none. A QuakeIndex score is a percentile against this place's own weeks — and when almost every week is empty, that number would just be reporting whether anything happened at all, dressed up as a percentile. So we do not publish one.
This is a statement about Connecticut, not about our data: it is a quiet place. There have been none of M1.5 or larger in the last 7 days.
USGS catalogue · updated
The last 30 days
Live · last 7 days
Latest earthquakes in Connecticut
None in Connecticut in the latest snapshot we hold; the full 7 days load from USGS as this page opens.
Source USGS · snapshot of
Where this is
Centre 41.505, -72.900 — the mean of this state’s place centroids, from the US Census Bureau Gazetteer (2024). Activity is measured across a rectangle drawn around the state, so a few earthquakes just over its border are counted too.
Largest on record in and around Connecticut
| Magnitude | When | Where |
|---|---|---|
| M 2.8 | 1 km N of Hillsdale, New Jersey | |
| M 2.3 | 8 km WNW of New Shoreham, Rhode Island | |
| M 2.2 | 2 km SSW of Hastings-on-Hudson, New York | |
| M 2.2 | 1 km E of Elmsford, New York | |
| M 2.2 | 18 km SSE of Narragansett Pier, Rhode Island | |
| M 2.2 | 9 km SE of Merritt Park, New York | |
| M 2.2 | 1 km S of Moodus, Connecticut | |
| M 2.2 | 1 km NNE of Moodus, Connecticut |
From the QuakeIndex catalogue, built from the USGS FDSN event service · inside a rectangle drawn around Connecticut, which takes in some ground over its borders.
Counties in Connecticut
- Capitol Planning Region
- Greater Bridgeport Planning Region
- Lower Connecticut River Valley Planning Region
- Naugatuck Valley Planning Region
- Northeastern Connecticut Planning Region
- Northwest Hills Planning Region
- South Central Connecticut Planning Region
- Southeastern Connecticut Planning Region
- Western Connecticut Planning Region
After an earthquake here
- Report what you felt to USGS — reports go to USGS, not to us, and they are what produces the intensity maps
- What to do during and after an earthquake
- QuakeIndex does not issue warnings. For early warning, ShakeAlert reaches phones through Wireless Emergency Alerts and the MyShake app