Earthquake · reviewed by a seismologist
M 2.1ml
68 km WSW of Ilwaco, Washington
Yes. A magnitude 2.1 earthquake was recorded 68 km WSW of Ilwaco, Washington, at 3:25 pm PDT on 2 October 2024 (22:25 UTC), 18 km deep.
- When
- Magnitude
- M 2.1 (ml)
- Depth
- 18 km below the surface
- Felt
- no reports yet
- Nearest
- Clatsop County, 88 km E
- Nearest mapped fault
- Cascadia fold and fault belt, 4 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 772 days ago
Earthquake alerts for Long Beach, 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. 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 37 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.1 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 410,000× the energy of this one
- Magna, Utah 2020 M 5.7 290,000× the energy of this one
- Around the size people start to feel M 3.0 26× the energy of this one
- This earthquake M 2.1 about 37 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 since 1900 lists no earthquake of M5 or more within 50 km.
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 46.0560, -124.8502. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Clatsop County, OR | 88 km (55 mi) | E | earthquakes near Clatsop County |
| Pacific County, WA | 99 km (62 mi) | NE | earthquakes near Pacific County |
| Tillamook County, OR | 108 km (67 mi) | SE | earthquakes near Tillamook County |
| Wahkiakum County, WA | 113 km (70 mi) | ENE | earthquakes near Wahkiakum County |
| Grays Harbor County, WA | 141 km (88 mi) | NNE | earthquakes near Grays Harbor County |
| Yamhill County, OR | 149 km (93 mi) | SE | earthquakes near Yamhill County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
4 earthquakes have been recorded within 50 km since this one.
- 2.3 80 km W of Cannon Beach, Oregon
- 1.8 41 km WNW of Cannon Beach, Oregon
- 2.3 78 km W of Cannon Beach, Oregon
- 2.4 76 km W of Neahkahnie Beach, Oregon
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.