Earthquake · reviewed by a seismologist
M 1.5ml
Earthquake near Lynden, WA
No earthquake was likely felt in Lynden in the 24 hours to 4:38 am PST (12:38 UTC). The last one was M 3.8, 74 km (46 mi) S, at 11:35 pm PDT on 1 July 2026, estimated intensity II (weak) in town; 2,030 felt reports to USGS. Every earthquake near Lynden
This page: a magnitude 1.5 earthquake was recorded 5 km (3 mi) north-northeast of Lynden, WA, at 5:08 pm PDT on 19 August 2023 (00:08 UTC), 5.8 km deep.
USGS: 5 km NNE of Lynden, Washington
26 km (16 mi) N of Bellingham, WA · 115 km (72 mi) N of Everett, WA
- When
- 5:08 pm PDT on 19 August 2023 ()
- Where
- 5 km (3 mi) north-northeast of Lynden, WA · earthquakes near Lynden
- Magnitude
- M 1.5 (ml)
- Depth
- 5.8 km below the surface
- Felt
- no reports yet
- Nearest
- Whatcom County, 46 km ESE
- Nearest mapped fault
- Birch Bay fault, 22 km from its surface trace — near is not the same as on
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 611 days ago
Earthquake alerts for Lynden, WA
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Alerts are on for .
Not a warning. An alert comes after USGS publishes a quake, usually minutes after the shaking. For early warning use ShakeAlert, through your phone's Wireless Emergency Alerts or the MyShake app.
This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.
At this magnitude and depth, people at rest would likely notice it out to about 8 km (5 mi) from the epicentre. In Lynden, 5 km away, the estimate is intensity II (weak). Estimated from magnitude, depth and distance with the intensity equation USGS Did You Feel It? uses; felt reports, where there are any, are the measurement.
Earthquakes near other towns within 30 km: Everson, Nooksack, Sumas, Ferndale, Peaceful Valley, Blaine.
How big was it?
This earthquake released about 5.4 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 2,800,000× the energy of this one
- Magna, Utah 2020 M 5.7 2,000,000× the energy of this one
- Around the size people start to feel M 3.0 180× the energy of this one
- This earthquake M 1.5 about 5.4 lb of TNT
Energy from the Gutenberg–Richter relation (log10E = 1.5M + 4.8), rounded to two figures; bar length is magnitude, which is already a logarithm of energy. Magnitudes of past earthquakes from the USGS catalogue.
For this area
No earthquake of M4 or more has been recorded within 50 km since our catalogue begins in 2016.
Before 2016, the USGS record lists 3 earthquakes of M5 or more within 50 km:
- 6.0 San Juan Islands, Washington · 42 km SW of this epicentre
- 5.5 21 km SSE of Point Roberts, Washington · 47 km WSW of this epicentre
- 5.0 4 km ENE of Deming, Washington · 25 km SE of this epicentre
Since 2016: the QuakeIndex catalogue (US, M1.5+), built from the USGS FDSN event service. Before 2016: USGS ComCat, M5+ from 1900. Distances are between epicentres. This is the record, not a forecast.
Where
Epicentre 48.9893, -122.4215. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Whatcom County, WA | 46 km (28 mi) | ESE | earthquakes near Whatcom County |
| Skagit County, WA | 71 km (44 mi) | SE | earthquakes near Skagit County |
| San Juan County, WA | 73 km (46 mi) | SW | earthquakes near San Juan County |
| Island County, WA | 94 km (59 mi) | SSW | earthquakes near Island County |
| Snohomish County, WA | 115 km (71 mi) | SSE | earthquakes near Snohomish County |
| Clallam County, WA | 146 km (91 mi) | SW | earthquakes near Clallam County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
53 earthquakes have been recorded within 50 km since this one.
- 1.5 12 km ENE of Mission, Canada
- 2.3 3 km NNW of Glacier, Washington
- 2.0 4 km WNW of Edison, Washington
- 1.8 9 km WNW of White Rock, Canada
- 1.8 8 km SSW of Chilliwack, Canada
- 2.0 7 km SW of Chilliwack, Canada
- 1.7 7 km SW of Chilliwack, Canada
- 1.6 8 km NNE of Sedro-Woolley, Washington
- 2.1 5 km WNW of Lynden, Washington
- 1.8 8 km SSW of Birch Bay, Washington
- 1.6 9 km NNW of Maple Ridge, Canada
- 2.3 12 km NNE of Maple Ridge, Canada
- 1.6 8 km SW of Chilliwack, Canada
- 1.5 7 km ENE of Abbotsford, Canada
- 1.7 10 km NNE of Mission, Canada
Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of . QuakeIndex does not forecast aftershocks. When USGS issues an operational aftershock forecast it appears on the USGS event page.
On USGS
- The official USGS event page — the source of record for every value above
- Did you feel it? Report it to USGS — reports go to USGS, not to us
- ShakeMap for this event, when USGS has produced one
QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.