Seismic activity reported near Esterhazy, Sask. in ‘suspected mining event’

Natural Resources Canada reported a 3.7 magnitude earthquake near Esterhazy, Sask. on Oct. 12, 2025. (Source: www.earthquakescanada.nrcan.gc.ca)

Those in and around Esterhazy, Sask. may have felt some shaking as a magnitude 3.7 earthquake was reported in the area over the weekend.

According to Earthquakes Canada, the event took place 18 kilometres north-northeast of Esterhazy at 11:06 p.m. on Oct. 12, at a depth of one kilometre.

The organization classified the incident as a “suspected mining event,” and reported it was lightly felt in Esterhazy.

• Download the CTV News app to get breaking news alerts sent to your device

Mosaic, which operates three mines in the area, reported the event occurred north of the company’s earliest past K3 mine workings.

“All employees were quickly accounted for, and comprehensive safety checks and inspections confirmed there were no reported findings,” a statement from Mosaic read.

“Operations at Esterhazy continue as usual, with no impact on production or infrastructure.”

Power outages in the Esterhazy area over the long weekend were also reported. Mosaic clarified the outages were caused by the recent storm and were unrelated to the seismic event, adding its facilities in the area were not affected.

The company went on to say that “mining induced seismic activity” in the area is common and its facilities are built with those risks in mind – adding Sunday’s incident registered well below the threshold for significant impact.

A similar event was reported on Aug. 1, when a 3.3 magnitude earthquake was reported just five kilometres northeast of Esterhazy. Mining activity was also suspected in that case.

• Earthquakes Canada reports seismic activity near Esterhazy, Sask.

“While the two recent events occurred far from current mining areas and present no immediate safety concerns, we continue to advance our knowledge of the geological properties of the K3 ore body and are working with external experts to review seismic activity,” the company’s statement read.

According to Natural Resources Canada, a similar size seismic event in the area was reported back in May. That incident was later confirmed to be mining-related.