Earthquake · reviewed by a seismologist
M 0.5ml
Earthquake near Morton, WA
Yes. A magnitude 0.5 earthquake was recorded 13 km (8 mi) SW of Morton, WA, at 7:02 am PDT on 12 October 2026 (14:02 UTC), 18 km deep. No felt reports to USGS yet.
USGS: 7 km SE of Mossyrock, Washington
- When
- 7:02 am PDT on 12 October 2026 ()
- Where
- 13 km (8 mi) SW of Morton, WA · earthquakes near Morton
- Magnitude
- M 0.5 (ml)
- Depth
- 18 km below the surface
- Felt
- no reports yet
- Nearest
- Lewis County, 10 km N
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 15 hours ago
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 0.18 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 1.5 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 83,000,000× the energy of this one
- Magna, Utah 2020 M 5.7 59,000,000× the energy of this one
- Around the size people start to feel M 3.0 5,200× the energy of this one
- This earthquake M 0.5 about 0.18 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 15 earthquakes of M5 or more within 50 km; the five largest:
- 5.7 38 km NNE of Amboy, Washington · 35 km SSE of this epicentre
- 5.2 37 km NNE of Amboy, Washington · 35 km SSE of this epicentre
- 5.2 23 km S of Morton, Washington · 20 km SE of this epicentre
- 5.1 Washington · 34 km SSE of this epicentre
- 5.1 38 km NNE of Amboy, Washington · 35 km SSE 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 46.4875, -122.4035. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Lewis County, WA | 10 km (7 mi) | N | earthquakes near Lewis County |
| Cowlitz County, WA | 39 km (24 mi) | SSW | earthquakes near Cowlitz County |
| Thurston County, WA | 60 km (37 mi) | NNW | earthquakes near Thurston County |
| Skamania County, WA | 62 km (39 mi) | SE | earthquakes near Skamania County |
| Pierce County, WA | 66 km (41 mi) | NNE | earthquakes near Pierce County |
| Clark County, WA | 80 km (50 mi) | S | earthquakes near Clark County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
6 earthquakes have been recorded within 50 km since this one.
- 0.1 38 km S of Morton, Washington
- -0.0 37 km NNE of Amboy, Washington
- 0.2 35 km NNE of Amboy, Washington
- -0.1 38 km NNE of Amboy, Washington
- 0.1 38 km NNE of Amboy, Washington
- -0.2 38 km NNE of Amboy, 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.