Oregon earthquakes

M2.3 earthquake 33 km ENE of Prospect, Oregon

A magnitude 2.3 earthquake struck 33 km ENE of Prospect, Oregon on Wed, Dec 28, 1994, 4:21 PM PST (00:21 UTC), 0 km (0 mi) below the surface.

A larger quake followed: M2.6 35 km ENE of Prospect, Oregon. This one was a foreshock.

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Map

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

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The earthquake

Magnitude
2.3 (md), micro
Local time
UTC
1994-12-29 00:21:28 UTC
Depth
-0.2 km (-0.1 mi), shallow
Epicenter
42.886° N, 122.120° W
Region
Oregon
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 0.9 km horizontally, 1.1 km in depth
Magnitude uncertainty
±0.09
Depth from
From location
Station coverage gap
113°
Stations used
11

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 12 in the 60 days after this one and 6 in the 30 days before it.

After

  1. 2.635 km ENE of Prospect, Oregon · 11592 days ago · -1 km deep · 2 km away
  2. 2.434 km ENE of Prospect, Oregon · 11592 days ago · 0 km deep · 1 km away
  3. 1.525 km WNW of Klamath Falls, Oregon · 11590 days ago · 2 km deep · 62 km away
  4. 2.014 km W of Klamath Falls, Oregon · 11583 days ago · 8 km deep · 72 km away
  5. 1.717 km WNW of Klamath Falls, Oregon · 11578 days ago · 7 km deep · 69 km away
  6. 2.117 km WNW of Klamath Falls, Oregon · 11576 days ago · 8 km deep · 68 km away
  7. 1.515 km W of Klamath Falls, Oregon · 11574 days ago · 8 km deep · 72 km away
  8. 1.725 km NW of Klamath Falls, Oregon · 11572 days ago · 7 km deep · 58 km away
  9. 2.113 km W of Klamath Falls, Oregon · 11570 days ago · 6 km deep · 74 km away
  10. 1.517 km WNW of Klamath Falls, Oregon · 11564 days ago · 9 km deep · 68 km away
  11. 1.924 km WNW of Klamath Falls, Oregon · 11549 days ago · 5 km deep · 64 km away
  12. 1.849 km S of Oakridge, Oregon · 11538 days ago · 7 km deep · 53 km away

Before

  1. 1.726 km WNW of Klamath Falls, Oregon · 11593 days ago · 6 km deep · 60 km away
  2. 1.520 km WNW of Klamath Falls, Oregon · 11612 days ago · 2 km deep · 67 km away
  3. 1.720 km WNW of Klamath Falls, Oregon · 11612 days ago · 2 km deep · 67 km away
  4. 1.620 km WNW of Klamath Falls, Oregon · 11612 days ago · 3 km deep · 67 km away
  5. 1.516 km WNW of Klamath Falls, Oregon · 11616 days ago · 9 km deep · 70 km away
  6. 1.816 km WNW of Klamath Falls, Oregon · 11618 days ago · 9 km deep · 70 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10361573 (also filed as usp0006qjs). Read Thu, Sep 24, 2026, 8:05 AM UTC.