M2.8 earthquake 32 km ENE of Halfway, Oregon
A magnitude 2.8 earthquake struck 32 km ENE of Halfway, Oregon on Thu, Apr 23, 2015, 9:49 PM MDT (03:49 UTC), 5 km (3 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 2.8 (ML, local (Richter)), micro
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2015-04-24 03:49:14 UTC
- Depth
- 4.9 km (3.0 mi), shallow
- Epicenter
- 44.974° N, 116.730° W
- Region
- Idaho
- Felt reports
- 2
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Magnitude estimates
Different scales measure different things and differ by a few tenths. The USGS marks one as preferred, and it is the one this page uses.
| Mag. | Scale | Computed by | Notes |
|---|---|---|---|
| 2.8 | ML, local (Richter) | USGS National Earthquake Information Center | Preferred · Reviewed · ±0.044 · 68 stations |
| 2.8 | ML, local (Richter) | Pacific Northwest Seismic Network | Final · ±0.126 · 9 stations |
| 3.2 | Mc | Montana Bureau of Mines and Geology | Preliminary · ±0.5 · 3 stations |
What happened
The USGS’s account of the effects of this earthquake.
Felt at Richland, Oregon.
From the USGS event page for us200028qe. U.S. Geological Survey text and figures are in the public domain.
Did you feel it?
2 people reported to the USGS what they felt; the strongest reported shaking was III, weak shaking.
How well it is located
Reviewed by a seismologist.
- Location uncertainty
- About 4.4 km horizontally, 6.4 km in depth
- Magnitude uncertainty
- ±0.04
- Depth from
- From location
- Station coverage gap
- 53°
- Stations used
- 47
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 3 in the 30 days before it.
After
- 2.025 km N of Halfway, Oregon · 4161 days ago · 18 km deep · 33 km away
- 2.04 km NNE of Donnelly, Idaho · 4143 days ago · 9 km deep · 58 km away
Before
Earthquakes todayIdaho earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us200028qe (also filed as mb15001146, uw60991572). Read Sat, Oct 3, 2026, 9:55 PM UTC.