Earthquake · reviewed by a seismologist
M 2.5ml
Earthquake near Agate Beach, OR
No earthquake was likely felt in Agate Beach in the 24 hours to 6:10 am PST (14:10 UTC). The last one was M 2.6, 20 km (13 mi) WSW, at 11:38 am PST on 8 February 2026, estimated intensity II (weak) in town. Every earthquake near Agate Beach
This page: a magnitude 2.5 earthquake was recorded 27 km (17 mi) northeast of Agate Beach, OR, at 3:11 am PST on 23 December 2018 (11:11 UTC), 49 km deep.
USGS: Oregon
49 km (31 mi) NW of Corvallis, OR · 119 km (74 mi) SW of Portland, OR
- When
- 3:11 am PST on 23 December 2018 ()
- Where
- 27 km (17 mi) northeast of Agate Beach, OR · earthquakes near Agate Beach
- Magnitude
- M 2.5 (ml)
- Depth
- 49 km below the surface
- Felt
- no reports yet
- Nearest
- Lincoln County, 23 km SSW
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 2819 days ago
Earthquake alerts for Agate Beach, OR
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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 small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.
At this magnitude and depth it was probably too small to be felt, even directly above it. In Agate Beach, 27 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: Siletz, Lincoln Beach, Rose Lodge, Depoe Bay, Lincoln City, Toledo.
How big was it?
This earthquake released about 190 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.5 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 80,000× the energy of this one
- Magna, Utah 2020 M 5.7 57,000× the energy of this one
- Around the size people start to feel M 3.0 5.1× the energy of this one
- This earthquake M 2.5 about 190 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 44.8263, -123.7868. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Lincoln County, OR | 23 km (14 mi) | SSW | earthquakes near Lincoln County |
| Polk County, OR | 32 km (20 mi) | ENE | earthquakes near Polk County |
| Benton County, OR | 47 km (29 mi) | SE | earthquakes near Benton County |
| Yamhill County, OR | 60 km (37 mi) | NE | earthquakes near Yamhill County |
| Tillamook County, OR | 70 km (44 mi) | N | earthquakes near Tillamook County |
| Marion County, OR | 96 km (60 mi) | E | earthquakes near Marion County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
54 earthquakes have been recorded within 50 km since this one.
- 1.5 5 km ENE of Sheridan, Oregon
- 1.7 4 km S of Fort Hill, Oregon
- 1.5 6 km W of Dallas, Oregon
- 1.9 5 km NE of Lincoln Beach, Oregon
- 1.7 17 km W of Falls City, Oregon
- 1.8 11 km E of Lincoln Beach, Oregon
- 1.6 7 km SE of Fort Hill, Oregon
- 2.0 19 km W of Falls City, Oregon
- 1.7 13 km N of Willamina, Oregon
- 1.9 12 km E of Toledo, Oregon
- 1.6 4 km NW of Adair Village, Oregon
- 1.7 6 km WNW of Dallas, Oregon
- 1.6 Oregon
- 1.5 3 km ESE of Rose Lodge, Oregon
- 1.9 5 km S of Lincoln City, 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.