Earthquake · reviewed by a seismologist
M 1.9ml
Earthquake near Aberdeen, WA
No earthquake was likely felt in Aberdeen in the 24 hours to 10:29 pm PST (06:29 UTC). The last one was M 4.2, 95 km (59 mi) ENE, at 2:05 pm PDT on 29 September 2026, estimated intensity II (weak) in town; 9,329 felt reports to USGS. Every earthquake near Aberdeen
This page: a magnitude 1.9 earthquake was recorded 36 km (22 mi) north-northeast of Aberdeen, WA, at 5:08 pm PDT on 20 April 2020 (00:08 UTC), 21 km deep.
USGS: 20 km SE of Neilton, Washington
- When
- 5:08 pm PDT on 20 April 2020 ()
- Where
- 36 km (22 mi) north-northeast of Aberdeen, WA · earthquakes near Aberdeen
- Magnitude
- M 1.9 (ml)
- Depth
- 21 km below the surface
- Felt
- no reports yet
- Nearest
- Grays Harbor County, 22 km SSW
- Nearest mapped fault
- Saddle Mountain faults, 17 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 2397 days ago
Earthquake alerts for Aberdeen, 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 it was probably too small to be felt, even directly above it. In Aberdeen, 36 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.
How big was it?
This earthquake released about 19 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.9 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 790,000× the energy of this one
- Magna, Utah 2020 M 5.7 560,000× the energy of this one
- Around the size people start to feel M 3.0 50× the energy of this one
- This earthquake M 1.9 about 19 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
The largest earthquake within 50 km since 2016 was M 4.1 on 2018-11-19 — about 2,100 times the energy of this one.
Before 2016, the USGS record lists 3 earthquakes of M5 or more within 50 km:
- 5.8 8 km N of Satsop, Washington · 29 km SE of this epicentre
- 5.1 Olympic Peninsula, Washington · 24 km ESE of this epicentre
- 5.0 18 km N of Satsop, Washington · 19 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 47.2872, -123.6855. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Grays Harbor County, WA | 22 km (14 mi) | SSW | earthquakes near Grays Harbor County |
| Mason County, WA | 39 km (24 mi) | E | earthquakes near Mason County |
| Jefferson County, WA | 59 km (37 mi) | NNE | earthquakes near Jefferson County |
| Thurston County, WA | 76 km (47 mi) | ESE | earthquakes near Thurston County |
| Pacific County, WA | 82 km (51 mi) | S | earthquakes near Pacific County |
| Kitsap County, WA | 87 km (54 mi) | ENE | earthquakes near Kitsap 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 7 km NE of McCleary, Washington
- 1.9 8 km WNW of Shelton, Washington
- 1.5 7 km SSW of Neilton, Washington
- 1.6 5 km ESE of Humptulips, Washington
- 2.3 28 km NW of Hoodsport, Washington
- 1.8 7 km SSW of Cosmopolis, Washington
- 1.8 1 km SSE of Oyehut, Washington
- 2.4 25 km ESE of Neilton, Washington
- 2.2 16 km E of Humptulips, Washington
- 1.9 12 km NNW of Amanda Park, Washington
- 1.6 Olympic Peninsula, Washington
- 1.8 4 km N of Humptulips, Washington
- 2.6 8 km NW of Hoquiam, Washington
- 2.1 14 km N of Hoodsport, Washington
- 1.7 5 km WSW of Neilton, Washington
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.