Ottawa residents got an unexpected jolt this week when a 3.9 magnitude earthquake struck near Shawville, Quebec — rattling windows, shaking walls, and sending social media buzzing with "did you feel that?" posts across the region.
What Happened
The earthquake, centred near Shawville in the Pontiac region of western Quebec — roughly 100 kilometres northwest of Ottawa — was strong enough to be felt across a wide swath of the Ottawa-Gatineau area. Tremors of this size in the Ottawa Valley aren't unheard of, but they're always enough to catch residents off guard.
Natural Resources Canada confirmed the quake through its national earthquake monitoring network. Reports of shaking came in from across Ottawa, Gatineau, and surrounding communities in both Ontario and Quebec.
Why Ottawa Feels It
The Ottawa Valley sits atop an ancient geological rift zone — the Ottawa-Bonnechere Graben — which makes the region one of the more seismically active areas in eastern Canada. While major damaging earthquakes are rare, small-to-moderate tremors occur several times a year, and the underlying rock geology means seismic waves travel efficiently over long distances.
A 3.9 magnitude quake is generally considered minor in terms of damage potential, but it's well within the range that people can feel — especially in upper floors of buildings or in quieter indoor settings.
Social Media Reacts
Within minutes of the tremor, Ottawa residents flooded Reddit and X (formerly Twitter) with reactions. "Thought my cat knocked something over, then realized my whole apartment was moving," wrote one Centretown resident. Others in Gatineau, Kanata, and even as far as Carleton Place reported feeling the shake.
For many newer Ottawans — especially those who moved from regions with little seismic activity — it was a first-time experience and a surprising one at that.
What to Do During an Earthquake
Emergency management officials remind residents that even in a low-risk seismic region like ours, it's worth knowing the basics:
- Drop, Cover, and Hold On — get under a sturdy table or desk and protect your head
- Stay away from windows and heavy objects that could fall
- If you're outdoors, move away from buildings and power lines
- After shaking stops, check for gas leaks or structural damage before re-entering a building
Earthquakes in this region rarely cause structural damage at this magnitude, but older unreinforced masonry buildings — of which Ottawa has many in its historic neighbourhoods — can be more vulnerable.
No Major Damage Reported
As of reporting, there were no confirmed reports of significant damage or injuries in the Ottawa area. Local emergency services did not issue any alerts. The quake served more as a conversation starter than a crisis — but it's a useful reminder that the Ottawa Valley does sit in an active seismic zone.
If you felt the earthquake, Natural Resources Canada encourages residents to submit a felt report at earthquakescanada.nrcan.gc.ca — the data helps scientists better understand seismic activity across the region.
Source: Barrie360 / Google News Ottawa. Information verified against Natural Resources Canada earthquake monitoring data.
