M4.4 earthquake 132 km SSE of Chignik, Alaska
A magnitude 4.4 earthquake struck 132 km SSE of Chignik, Alaska on Thu, Feb 22, 2018, 1:15 PM AKST (22:15 UTC), 20 km (13 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.4 (Mw, moment), light
- Magnitude from
- Alaska Earthquake Center
- Local time
- UTC
- 2018-02-22 22:15:24 UTC
- Depth
- 20.3 km (12.6 mi), shallow
- Epicenter
- 55.276° N, 157.303° W
- Region
- Alaska
- 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 |
|---|---|---|---|
| 4.4 | Mw, moment | Alaska Earthquake Center | Preferred · Preliminary |
| 4.4 | Mwr, regional moment | USGS National Earthquake Information Center | Reviewed · ±0.052 · 36 stations |
Did you feel it?
No one has reported feeling this quake to the USGS.
Fault motion and ground failure
How the rock slipped, from the moment tensor, and the USGS estimate of landslides and liquefaction.
- Faulting
- Normal
- Moment magnitude
- 4.4 Mwr
- Nodal plane 1
- Strike 237°, dip 78°, rake -77°
- Nodal plane 2
- Strike 9°, dip 18°, rake -137°
How well it is located
Reviewed by a seismologist.
- Stations used
- 115
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 31 in the 60 days after this one and 3 in the 30 days before it.
After
- 3.6134 km SSE of Chignik, Alaska · 3143 days ago · 20 km deep · 3 km away
- 1.942 km SE of Perryville, Alaska · 3143 days ago · 19 km deep · 97 km away
- 1.843 km SE of Perryville, Alaska · 3143 days ago · 26 km deep · 96 km away
- 3.3134 km SSE of Chignik, Alaska · 3142 days ago · 34 km deep · 3 km away
- 3.4206 km SE of Perryville, Alaska · 3142 days ago · 9 km deep · 79 km away
- 3.0119 km SE of Chignik, Alaska · 3138 days ago · 27 km deep · 17 km away
- 2.839 km SSE of Chignik, Alaska · 3138 days ago · 45 km deep · 93 km away
- 3.251 km SSE of Perryville, Alaska · 3136 days ago · 5 km deep · 95 km away
- 3.8130 km SSE of Chignik, Alaska · 3135 days ago · 26 km deep · 4 km away
- 3.4134 km SSE of Chignik, Alaska · 3135 days ago · 3 km deep · 6 km away
- 3.954 km SSE of Chignik, Alaska · 3134 days ago · 45 km deep · 79 km away
- 3.6136 km SE of Chignik, Alaska · 3134 days ago · 37 km deep · 15 km away
- 3.8113 km SE of Chignik, Alaska · 3132 days ago · 24 km deep · 30 km away
- 3.4103 km ESE of Chignik, Alaska · 3125 days ago · 11 km deep · 63 km away
- 2.279 km ESE of Chignik, Alaska · 3125 days ago · 17 km deep · 71 km away
- 2.787 km ESE of Chignik, Alaska · 3125 days ago · 7 km deep · 67 km away
- 2.5112 km SE of Chignik, Alaska · 3123 days ago · 7 km deep · 31 km away
- 2.4130 km SE of Chignik, Alaska · 3121 days ago · 14 km deep · 20 km away
- 2.144 km SE of Perryville, Alaska · 3114 days ago · 45 km deep · 93 km away
- 2.453 km SSE of Chignik, Alaska · 3114 days ago · 45 km deep · 80 km away
- 2.646 km SE of Chignik, Alaska · 3113 days ago · 56 km deep · 88 km away
- 2.564 km SSE of Chignik, Alaska · 3111 days ago · 64 km deep · 70 km away
- 2.8202 km SE of Perryville, Alaska · 3110 days ago · 29 km deep · 74 km away
- 2.1186 km SSE of Perryville, Alaska · 3108 days ago · 24 km deep · 97 km away
- 1.966 km ESE of Chignik, Alaska · 3107 days ago · 49 km deep · 94 km away
- 3.737 km ESE of Perryville, Alaska · 3105 days ago · 47 km deep · 99 km away
- 2.7130 km SSE of Perryville, Alaska · 3104 days ago · 11 km deep · 77 km away
- 2.3140 km ESE of Chignik, Alaska · 3102 days ago · 59 km deep · 66 km away
- 2.6118 km SSE of Chignik, Alaska · 3089 days ago · 25 km deep · 14 km away
- 1.841 km E of Perryville, Alaska · 3086 days ago · 9 km deep · 98 km away
- 2.477 km SSE of Chignik, Alaska · 3084 days ago · 14 km deep · 55 km away
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event ak0182g0o73f (also filed as ak18494312, us2000d6mg). Read Fri, Oct 2, 2026, 6:30 AM UTC.