M1.8 earthquake 3 km WNW of Waterville, Washington
A magnitude 1.8 earthquake struck 3 km WNW of Waterville, Washington on Wed, Aug 6, 1975, 10:04 PM PDT (05:04 UTC), 0 km (0 mi) below the surface.
A larger quake followed: M2.1 6 km SW of Chelan Falls, Washington. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 1.8 (md), micro
- Local time
- UTC
- 1975-08-07 05:04:42 UTC
- Depth
- -0.3 km (-0.2 mi), shallow
- Epicenter
- 47.664° N, 120.115° 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 0.6 km horizontally
- Magnitude uncertainty
- ±0.04
- Depth from
- From location
- Station coverage gap
- 146°
- Stations used
- 6
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 6 in the 60 days after this one and 4 in the 30 days before it.
After
- 1.75 km WSW of Entiat, Washington · 18679 days ago · 0 km deep · 13 km away
- 1.810 km W of Quincy, Washington · 18668 days ago · 14 km deep · 48 km away
- 2.16 km SW of Chelan Falls, Washington · 18659 days ago · 3 km deep · 12 km away
- 2.18 km E of Snoqualmie Pass, Washington · 18651 days ago · 0 km deep · 93 km away
- 2.011 km SSW of Mansfield, Washington · 18649 days ago · 18 km deep · 31 km away
- 1.731 km N of Leavenworth, Washington · 18649 days ago · -1 km deep · 46 km away
Before
- 2.63 km ENE of Entiat, Washington · 18701 days ago · 2 km deep · 5 km away
- 2.73 km N of Rock Island, Washington · 18702 days ago · 6 km deep · 29 km away
- 1.514 km E of Mansfield, Washington · 18709 days ago · 0 km deep · 52 km away
- 2.04 km NE of Waterville, Washington · 18710 days ago · 0 km deep · 7 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10861408. Read Wed, Sep 30, 2026, 4:28 AM UTC.