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

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An earthquake measuring 3.4 magnitude occurred on June 29, 2024, approximately 15 km southwest of Henderson, New York, at a depth of 10 km. The event raised questions about the potential for a tsunami in the Great Lakes; however, experts clarified that the earthquake's low to moderate magnitude makes a tsunami unlikely. Instead, any resulting waves would be classified as a seiche, which are standing waves caused by seismic activity in enclosed bodies of water. The discussion also touched on the type of fault involved, with no indication of subduction processes. Additionally, the term "meteotsunami" was mentioned, referring to waves driven by meteorological conditions. The earthquake's epicenter is near the Frontenac Arch, suggesting possible residual stress relief in the area.
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Wow.
A possibility of a tsunami in a great lake?
 
BillTre said:
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
 
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.
 
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