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Moderate mag. 4.3 earthquake - 222 km west of Terrace, Regional District of Kitimat-Stikine, Colombia Britanica, Canada, on Monday, May 9, 2022 at 6:02 am (GMT -7) -

Moderate mag. 4.3 earthquake - 222 km west of Terrace, Regional District of Kitimat-Stikine, Colombia Britanica, Canada, on Monday, May 9, 2022 at 6:02 am (GMT -7) Moderate mag. 4.3 earthquake - 222 km west of Terrace, Regional District of Kitimat-Stikine, Colombia Britanica, Canada, on Monday, May 9, 2022 at 6:02 am (GMT -7)

Moderate magnitude 4.3 earthquake at 3 km depth

9 May 13:08 UTC: First to report: VolcanoDiscovery after 7 minutes.
9 May 19:08: Now using data updates from RaspberryShake
9 May 19:11: Now using data updates from NRCAN

Earthquake details

Date & timeMay 9, 2022 13:02:05 UTC -
Local time at epicenterMonday, May 9, 2022 at 6:02 am (GMT -7)
StatusConfirmed
Magnitude4.3
Depth3.0 km
Epicenter latitude / longitude53.7436°N / 131.7478°W (Coastal Waters Of Southeast Alaska And British Columbia, Canada)
Antipode53.744°S / 48.252°E
Shaking intensityLight shaking
Felt33 reports
Primary data sourceNRCAN (Department of Natural Resources Canada)
Nearest volcanoCrow Lagoon (145 km / 90 mi)
Nearby towns and cities113 km (70 mi) SW of Prince Rupert (North Coast, British Columbia) (pop: 14,700) | Show on map | Quakes nearby
154 km (96 mi) S of Metlakatla (Alaska, USA) (pop: 1,410) | Show on map | Quakes nearby
178 km (111 mi) S of Ketchikan (Alaska, USA) (pop: 8,200) | Show on map | Quakes nearby
206 km (128 mi) W of Kitimat (British Columbia) (pop: 8,990) | Show on map | Quakes nearby
213 km (132 mi) SSE of Craig (Alaska, USA) (pop: 1,250) | Show on map | Quakes nearby
222 km (138 mi) WSW of Terrace (Kitimat-Stikine, British Columbia) (pop: 19,400) | Show on map | Quakes nearby
269 km (167 mi) SSW of Stewart (British Columbia) (pop: 496) | Show on map | Quakes nearby
Estimated seismic energy released1.8 x 1011 joules (49.4 megawatt hours, equivalent to 42.5 tons of TNT) | about seismic energy
Show interactive Map
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Data for the same earthquake reported by different agencies

Info: The more agencies report about the same quake and post similar data, the more confidence you can have in the data. It takes normally up to a few hours until earthquake parameters are calculated with near-optimum precision.
Mag.DepthLocationSource
4.33 kmNear Prince Rupert, British Columbia, CanadaNRCAN
4.32.9 kmCanada: 29 Km E of Port Clements, BCRaspberryShake

Seismograms

Seismic station: Ketchikan, AK, USA (V35K/AK network) | Distance from quake: 176 km / 110 mi | Show on map | Station Info
Seismic station Ketchikan, AK, USA: vertical movement plot around time of quake (source: IRIS/BUD)
Seismogram (vertical component) around time of quake. Thin dotted red line indicates time of quake. Seismic waves arrive some time later, depending on distance. Bandpass filter applied: 0.2-10.0 Hz. Source: IRIS Buffer of Uniform Data (BUD) webtool
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User reports for this quake (36)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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Waking up (37.1 km NW of epicenter) [Map] / Light shaking (MMI IV) / rattling, vibrating / 15-20 s : Heard the house creak; felt vibration as though a heavy bear had walked across the patio. Didn't last long.  
Port Clements BC / Moderate shaking (MMI V) / horizontal (sideways) swinging / 1-2 s : Woke us up. Dishes in the cabinets rattled, the dog jumped into bed and wanted to be under the quilt.  
Masset / Moderate shaking (MMI V) / both vertical and horizontal swinging / 5-10 s : Spouse and I laying in bed and felt the bed and entire house go back and forth and up and down. Just looked at each other with really wide eyes! Thought it was the cat on the bed moving around at first :)  
Coastal Waters Of Southeast Alaska And British Columbia (34.3 km NW of epicenter) [Map] / Moderate shaking (MMI V) / both vertical and horizontal swinging / 5-10 s
Port Clements (29.8 km WSW of epicenter) [Map] / Light shaking (MMI IV) / single lateral shake / 5-10 s : Bed shaking, woke me up  
Tlell Haida Gwaii BC (27.4 km SSW of epicenter) [Map] / Light shaking (MMI IV)
Sangan river (35 km NNW of epicenter) [Map] / Light shaking (MMI IV) / rattling, vibrating / 2-5 s
2175 Marwell road Masset BC (39.4 km NW of epicenter) [Map] / Light shaking (MMI IV) / rattling, vibrating / 2-5 s
Haida Gwaii (34.9 km W of epicenter) [Map] / Light shaking (MMI IV) : Woke me up like a big truck was moving my house  
Delkatla, Skeena-Queen Charlotte Regional District, British Columbia (39.1 km NW of epicenter) [Map] / Light shaking (MMI IV) : I was asleep, and bed shook woke me up  
Old Massett (43.8 km NW of epicenter) [Map] / Light shaking (MMI IV) / horizontal (sideways) swinging / 2-5 s : Just felt the whole house shake as I got out of bed.  
.tow hill rd masset bc canada (34.4 km NNW of epicenter) [Map] / Light shaking (MMI IV) / single lateral shake / 10-15 s : Sleeping woke me up  
Masset (39 km NW of epicenter) [Map] / Very weak shaking (MMI II) / 2-5 s : Lying still and felt first tremor, woke my wife and said it's just tremor's.  
Tlell B,C, Canada V0t1y0 (23 km SSW of epicenter) [Map] / Moderate shaking (MMI V) / single lateral shake / 30-60 s : laying in bed  
Masset BC (41.9 km NW of epicenter) [Map] / Very weak shaking (MMI II) / horizontal (sideways) swinging / 2-5 s : Like I was being rocked back an forth.  
Prince Rupert BC (121.1 km NE of epicenter) [Map] / Weak shaking (MMI III) / rattling, vibrating / 5-10 s : Things shook  
skidegate / not felt
Masset / Light shaking (MMI IV) / horizontal (sideways) swinging / 2-5 s
Masset BC / Moderate shaking (MMI V) / both vertical and horizontal swinging / 10-15 s : Our bed was shaking and woke us up. Shook pretty good.  
Masset, Trumpeter Drive area / not felt
Towhill rd. Masset, BC / Light shaking (MMI IV) / rattling, vibrating / 15-20 s
Tow Hill Road, Masset, Haida Gwaii / Light shaking (MMI IV) / 2-5 s
Prince Rupert BC / not felt : I was awake and sitting in my living room. Did not notice the quake.  
Port clements / Weak shaking (MMI III) / rattling, vibrating / 2-5 s
Tlell / Light shaking (MMI IV) / rattling, vibrating / 20-30 s
Prince Rupert / Very weak shaking (MMI II) / 5-10 s
Port Clements / Light shaking (MMI IV) / 2-5 s : Weak shaking, but definitely noticeable. Hanging objects swinging slightly.  
Haida Gwaii / Light shaking (MMI IV)
Tlell BC Haida Gwaii / Light shaking (MMI IV) / rattling, vibrating / 20-30 s
Port Clements BC Haida Gwaii / Light shaking (MMI IV) / rattling, vibrating / 2-5 s : A general rattling of the house, windows and bed!  
Tlell BC / Light shaking (MMI IV) / horizontal (sideways) swinging / 5-10 s : The bed shook!  
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