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Magnitude 4.2 Earthquake Strikes Near Grande Prairie, Alberta

Authorities are examining whether the tremor was induced by oil and gas operations near Grande Prairie.

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Seismograph with paper in action during an earthquake is pictured in this photo illustration.
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Overview

  • At 9:13 p.m. local time on July 26, Earthquakes Canada recorded a magnitude 4.2 quake about 36 kilometres south of Grande Prairie.
  • Officials have confirmed the tremor and note that earthquakes between magnitudes 3.5 and 5.4 are often felt by residents but rarely cause damage.
  • No injuries or structural harm have been reported and modern building codes in Alberta are designed to withstand quakes up to magnitude 5.5.
  • Seismologists say the event adds to a cluster of shallow tremors in the region, including two industry-linked quakes of magnitudes 4.7 and 4.0 in February.
  • The Alberta Energy Regulator has been contacted as authorities investigate potential links between the seismic activity and local oil and gas operations.