@earthquakeguy.bsky.social
NRCan earthquake seismologist + University of Victoria Adjunct Professor. Works with engineers, emergency managers, and communities to help minimize the impact of #earthquakes. Also, posts on Nature and Gardening (Zone 9a). 🌱 🧪⚒️ 🏞 🇨🇦 My thoughts/posts.
Hi Brent, good question. The signal at ~13:36 (06:36 PDT) is interesting, and there are smaller ~similar waveforms at 12:54, 13:15 and 13:42 on the seismogram. The signal at 12:28 that has a sharper arrival and coda is probably the P-wave from a M5.2 earthquake near Taiwan about 13 minutes earlier.
In case this is helpful or of interest to others.
Recordings from NRCan seismic station WSLR for March 11-12, 2026.
@mabrideau.bsky.social
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to access NRCan seismic data: www.earthquakescanada.nrcan.gc.ca/fdsnws/
Hi Brent. Here is the seismogram recorded at WSLR. for March 11-12, 2026. Very noisy (unfiltered on left) thanks to high winds. Filtered (1 Hz high-pass) shows a few small potential signals in the overnight hours. These 24-hour seismic plots thanks to @earthscope.org
www.iris.edu/app/station_...
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They will be back! A good chinook wind would help.
Well, hopefully this flower count will remind people in the "colder areas of Canada" that Spring is on it's way! Flowers will arrive in other parts of the country before you know it...
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and... the final tally is in for the Greater #Victoria flower count week 2026.
86 billion blossoms! Daffodils, tulips, camellia, magnolia, cherry blossoms, hellebore and so much more! #Spring
www.flowercount.com
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Great questions, thanks. I don't know the answer, but you can often easily see which old buildings have been seismically retrofit (the steel cross-bracing). The City of Victoria (in ~2016) did a study on likely impacts of an earthquake on buildings. Liquefaction: storymaps.arcgis.com/stories/abd5...
Thanks. The (slight) overhang is about 8 feet above the ground.
I use a string of 5W lights (November-March) to protect the tree if it gets close to freezing (a thermostat turns the lights when it drops to about +2C / 36F). For all the details, see: www.youtube.com/watch?v=XX-R...
Probably both. Blast likely the loudest.
Hi Peter, I haven’t seen the NASA report, but it could be that the entry point is quite different than the bolide “blast point”. There can be several blasts points, but often 20 to 30 km altitude for bolides.
I look forward to your column! Cheers
The sonic boom, likely from a #meteor, picked up on seismographs in Metro #Vancouver — around 910p PST 3 March 2026
#BCStorm #BCStormWatch #BCwx
Good catch, Ryan!
Sound good!
For all the details on growing citrus here in Canada:
www.youtube.com/watch?v=XX-R...
Thanks - so true! Welcome back, Ryan!
Thanks, Ed.
Yes - in-ground close to a south-facing wall. I planted it 5 or 6 years ago and it now produces abut 20-30 lemons each year. It should produce 100-200 when full grown.
See: www.youtube.com/watch?v=XX-R...
Well, there in the Okanagan Valley you have the best peaches, apricots, bing cherries, plums, and the list goes on and on... but here on the island, we have the best lemons!
I use a string of 5W light bulbs to keep the tree warm on those nights where the temperature dips below freezing (~10 nights).
Welcome to March! It is time to pick another dozen lemons from my backyard lemon tree here on southern Vancouver Island 🇨🇦
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Heart-healthy lemon baking ideas are welcome!
The 2001 M6.8 Nisqually #earthquake was felt by most people in southern British Columbia, and was well-recorded (even on old paper drum recorders). Damage in #Victoria included broken windows, broken pipes, and items knocked off shelves.
Detailed study:
pubs.geoscienceworld.org/ssa/bssa/art...
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Yes, I remember our earthquake research centre here on Vancouver Island filling up quickly with media!
yes, time flies!
25 years ago today (at 10:54 a.m.), a damaging M6.8 earthquake rocked #Seattle, rolled #Victoria and was felt across southern BC and the #PacificNorthwest. This was a deep #earthquake (52 km beneath the surface) in the subducting Juan de Fuca plate.
Details:
pnsn.org/education/pn...
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Yes - long-period (slow shaking) “surface waves” travel long distances and can cause high-rise buildings to sway.
Thanks - no - you shouldn’t lose any sleep!
This is a great study that provides new details on the tectonics but it doesn’t change our estimate of earthquake hazard.
Vancouver Island is a region of high seismic hazard though - so being prepared is important!
climatereadybc.gov.bc.ca/pages/earthq...
DYK that the 2010 M8.8 Chile earthquake caused highrises in Sao Paulo, Brazil (~2900 km away) to sway? (no damage) earthquake.usgs.gov/earthquakes/...
In North America this suggests that a M9 Cascadia #earthquake could be felt (no damage) by people in highrises as distant as Toronto and Chicago.
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15 years ago today - a M8.8 subduction #earthquake and #tsunami struck the coast of Chile. A fault ~500 km long and 100 km wide broke, the Nazca plate slipped up to 10 m. The city of Concepción moved ~3 m to the west in 45 seconds.
So many valuable lessons for the Cascadia subduction zone.
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Bamboo on a winters night, southern #VancouverIsland.
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Surf's up on our normally tranquil southern #VancouverIsland beaches today...
Tomorrow the big winds arrive!
A thread for the 15-year anniversary of the 2011 Christchurch earthquake. I won’t have a chance to post it on the day, so I’m doing it a couple days early. Note that the work I’m posting was carried out by many brilliant people. 1/
