M2.4 earthquake 35 km SSE of Morton, Washington
A magnitude 2.4 earthquake struck 35 km SSE of Morton, Washington on Fri, Oct 22, 1999, 5:56 AM PDT (12:56 UTC), -2 km (-1 mi) below the surface.
A larger quake followed: M2.6 14 km NNW of Mount Hood Village, Oregon. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 2.4 (md), micro
- Local time
- UTC
- 1999-10-22 12:56:39 UTC
- Depth
- -1.5 km (-1.0 mi), shallow
- Epicenter
- 46.248° N, 122.176° 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 0.5 km horizontally, 0.4 km in depth
- Magnitude uncertainty
- ±0.06
- Depth from
- Operator assigned
- Station coverage gap
- 210°, poorly surrounded by stations
- 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: 5 in the 60 days after this one and 6 in the 30 days before it.
After
- 1.77 km SSW of Morton, Washington · 9831 days ago · 18 km deep · 30 km away
- 1.714 km NNE of Ashford, Washington · 9830 days ago · 9 km deep · 71 km away
- 2.614 km NNW of Mount Hood Village, Oregon · 9810 days ago · 13 km deep · 87 km away
- 1.621 km S of Morton, Washington · 9800 days ago · 7 km deep · 15 km away
- 1.67 km N of Amboy, Washington · 9784 days ago · 15 km deep · 37 km away
Before
- 1.66 km WSW of Kalama, Washington · 9843 days ago · 6 km deep · 64 km away
- 1.721 km ENE of Ashford, Washington · 9847 days ago · 0 km deep · 73 km away
- 2.120 km ENE of Ashford, Washington · 9851 days ago · -2 km deep · 72 km away
- 2.512 km WSW of Packwood, Washington · 9859 days ago · 3 km deep · 43 km away
- 1.727 km ENE of Ashford, Washington · 9862 days ago · -2 km deep · 77 km away
- 2.224 km ENE of Packwood, Washington · 9868 days ago · 5 km deep · 78 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10488668. Read Wed, Sep 30, 2026, 11:52 AM UTC.