Mag 3.4 Earthquake under Lake Ontario, 15 km SW of Henderson, New York

[Astronuc]

An unusual place for an earthquake.
https://earthquake.usgs.gov/earthquakes/eventpage/us6000n92y/map

M 3.4 - 15 km SW of Henderson, New York​

• 2024-06-29 03:45:24 (UTC)
• 43.759°N 76.331°W
• 10.0 km depth

https://www.yahoo.com/news/earthquake-rocks-upstate-york-usgs-113405947.html

 

[BillTre]

Wow.
A possibility of a tsunami in a great lake?

 

[Astronuc]

A possibility of a tsunami in a great lake?

I don't believe so. The magnitude of the earthquake 3.4 was rather low to moderate, even though it appears to be shallow. I think any wave or waves would be referred to as a seiche. A seiche (pronounced "saysh") is a series of standing waves in a fully, or partially-enclosed body of water caused by earthquakes or landslides.
https://kingcounty.gov/en/dept/exec...vention/emergency-preparedness/tsunami-seiche
https://oceanservice.noaa.gov/facts/seiche.html

I was looking for further information on the type of fault. I don't believe subduction was involved.
https://earthquake.usgs.gov/earthquakes/eventpage/us6000n92y/region-info

We now see the term meteotsunami used in relation to meteorological driven waves or seishes.
https://www.ijc.org/en/they-come-waves-seiches-and-type-tsunami-affect-great-lakes

 

[CDJauer]

The epicentre of the quake is just west of the Frontenac Arch, a basement structural rise. Might still be some residual stress relief occurring there.