Washington earthquakes

M1.6 earthquake 6 km SSE of Acme, WA

A magnitude 1.6 earthquake struck 6 km SSE of Acme, WA on Mon, May 27, 1991, 3:05 AM PDT (10:05 UTC), 20 km (12 mi) below the surface.

A larger quake followed: M3.0 6 km ENE of Maple Ridge, Canada. This one was a foreshock.

Sudden Valley forecastMore in Washington

Map

Where this earthquake was located, with the others nearby. Select one for its page.

Open the live map with earthquakes

The earthquake

Magnitude
1.6 (Md, duration), micro
Magnitude from
Pacific Northwest Seismic Network
Local time
UTC
1991-05-27 10:05:44 UTC
Depth
19.5 km (12.1 mi), shallow
Epicenter
48.665° N, 122.185° W
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, 1.4 km in depth
Magnitude uncertainty
±0.09
Depth from
From location
Station coverage gap
58°
Stations used
19

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 1.5 and up: 13 in the 60 days after this one and 2 in the 30 days before it.

After

  1. 2.52 km NNE of Deming, Washington · 12909 days ago · -1 km deep · 20 km away
  2. 1.74 km ENE of Port Ludlow, Washington · 12909 days ago · 14 km deep · 87 km away
  3. 1.93 km N of Rockport, Washington · 12896 days ago · 1 km deep · 46 km away
  4. 2.05 km SSE of Port Ludlow, Washington · 12894 days ago · 18 km deep · 93 km away
  5. 1.53 km WNW of Deming, Washington · 12893 days ago · 12 km deep · 20 km away
  6. 1.50 km NE of Ferndale, Washington · 12890 days ago · 7 km deep · 36 km away
  7. 2.21 km ESE of Esperance, Washington · 12880 days ago · 22 km deep · 98 km away
  8. 3.06 km ENE of Maple Ridge, Canada · 12877 days ago · 5 km deep · 68 km away
  9. 1.79 km ENE of Maple Ridge, Canada · 12875 days ago · 8 km deep · 70 km away
  10. 1.83 km ENE of Deming, Washington · 12871 days ago · 1 km deep · 20 km away
  11. 2.12 km SSE of Three Lakes, Washington · 12860 days ago · 3 km deep · 83 km away
  12. 2.03 km WSW of Langley, Canada · 12859 days ago · 12 km deep · 61 km away
  13. 2.14 km NNW of Hamilton, Washington · 12855 days ago · -1 km deep · 18 km away

Before

  1. 1.52 km SE of Lake Roesiger, Washington · 12938 days ago · 17 km deep · 81 km away
  2. 1.5Washington · 12939 days ago · -1 km deep · 31 km away

Earthquakes todayWashington earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10279273. Read Mon, Oct 5, 2026, 3:19 AM UTC.