M1.7 earthquake Washington
A magnitude 1.7 earthquake struck in Washington on Sat, May 10, 1986, 4:32 AM PDT (11:32 UTC), 1 km (0 mi) below the surface.
A larger quake followed: M1.9 23 km W of Loomis, Washington. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 1.7 (md), micro
- Local time
- UTC
- 1986-05-10 11:32:04 UTC
- Depth
- 0.7 km (0.4 mi), shallow
- Epicenter
- 48.715° N, 121.016° 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 12.1 km horizontally, 23.3 km in depth
- Magnitude uncertainty
- ±0.11
- Depth from
- Operator assigned
- Station coverage gap
- 197°, poorly surrounded by stations
- Stations used
- 16
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 2 in the 60 days after this one and 6 in the 30 days before it.
After
- 1.923 km W of Loomis, Washington · 14735 days ago · 10 km deep · 78 km away
- 3.323 km WSW of Princeton, Canada · 14715 days ago · 18 km deep · 72 km away
Before
- 1.57 km NNE of Lake Cavanaugh, Washington · 14753 days ago · 2 km deep · 79 km away
- 2.48 km SE of Glacier, Washington · 14768 days ago · 0 km deep · 64 km away
- 1.52 km SSW of Swede Heaven, Washington · 14772 days ago · 3 km deep · 73 km away
- 1.72 km SSW of Swede Heaven, Washington · 14772 days ago · 2 km deep · 74 km away
- 1.72 km SSW of Swede Heaven, Washington · 14772 days ago · 3 km deep · 74 km away
- 1.82 km S of Swede Heaven, Washington · 14774 days ago · 0 km deep · 73 km away
Earthquakes todayWashington earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10210543. Read Wed, Sep 23, 2026, 8:31 AM UTC.