Earthquakes in Jefferson County, New York
Too few earthquakes here to say what is "normal"
Only 35 earthquakes of M1.5 or largerhave been recorded within 100 km 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 So we do not publish one.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 Jefferson County, New York, 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 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
Where this is
Centre 43.996, -76.053 — the Census internal point, from the US Census Bureau Gazetteer (2024). Activity is measured within 100 km of it.
Largest on record nearby
| Magnitude | When | Where |
|---|---|---|
| M 3.6 | New York | |
| M 3.3 | 14 km W of Ellisburg, New York | |
| M 2.8 | 28 km WSW of Henderson, New York | |
| M 2.6 | 1 km W of Adams Center, New York | |
| M 2.5 | 6 km SE of Lowville, New York | |
| M 2.3 | 10 km ENE of Port Leyden, New York | |
| M 2.3 | 9 km ENE of Port Leyden, New York | |
| M 2.1 | 11 km NE of Lyons Falls, New York |
From the QuakeIndex catalogue, built from the USGS FDSN event service · within 100 km of the centre above.
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