M2.3 earthquake 20 km SSE of Marblemount, Washington
A magnitude 2.3 earthquake struck 20 km SSE of Marblemount, Washington on Thu, Oct 9, 1986, 1:26 PM PDT (20:26 UTC), 9 km (6 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 2.3 (md), micro
- Local time
- UTC
- 1986-10-09 20:26:14 UTC
- Depth
- 9.1 km (5.6 mi), shallow
- Epicenter
- 48.354° N, 121.358° W
- Region
- Washington
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Did you feel it?
No one has reported feeling this quake to the USGS.
How well it is located
Reviewed by a seismologist.
- Location uncertainty
- About 1.6 km horizontally
- Magnitude uncertainty
- ±0.06
- Depth from
- From location
- Station coverage gap
- 149°
- Stations used
- 21
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 4 in the 60 days after this one and 8 in the 30 days before it.
After
- 1.617 km ESE of Verlot, Washington · 14574 days ago · 7 km deep · 36 km away
- 1.510 km NW of Marblemount, Washington · 14545 days ago · 0 km deep · 30 km away
- 2.117 km NE of Leavenworth, Washington · 14539 days ago · 8 km deep · 99 km away
- 1.91 km E of Kirkland, Washington · 14534 days ago · 22 km deep · 97 km away
Before
- 1.514 km NNE of Snoqualmie Pass, Washington · 14595 days ago · 5 km deep · 94 km away
- 2.215 km ESE of Acme, Washington · 14599 days ago · -1 km deep · 60 km away
- 1.72 km E of Kirkland, Washington · 14601 days ago · 14 km deep · 96 km away
- 2.23 km N of Hamilton, Washington · 14603 days ago · -1 km deep · 51 km away
- 2.43 km N of Hamilton, Washington · 14605 days ago · -1 km deep · 52 km away
- 2.417 km ESE of Verlot, Washington · 14615 days ago · 7 km deep · 36 km away
- 2.820 km E of Verlot, Washington · 14615 days ago · 5 km deep · 34 km away
- 1.64 km SW of Darrington, Washington · 14616 days ago · 1 km deep · 26 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10214538. Read Tue, Sep 22, 2026, 10:49 AM UTC.