Light mag. 4.7 earthquake - Gulf of Alaska, 59 mi west of Karluk, Kodiak Island County, Alaska, USA, on 2020-02-17 00:18:06 -09:00 -
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Light magnitude 4.7 earthquake at 99 km depth
17 Feb 09:22 UTC: First to report: USGS after 4 minutes.
Hypocenter depth recalculated from 118.5 to 113.5 km.
Hypocenter depth recalculated from 113.5 to 110.0 km.
Hypocenter depth recalculated from 110.0 to 110.8 km.
Hypocenter depth recalculated from 110.8 to 108.5 km.
Hypocenter depth recalculated from 108.5 to 107.5 km.
Feb 17 09:33: Magnitude recalculated from 4.8 to 4.7.
Hypocenter depth recalculated from 107.5 to 98.9 km.
Hypocenter depth recalculated from 118.5 to 113.5 km.
Hypocenter depth recalculated from 113.5 to 110.0 km.
Hypocenter depth recalculated from 110.0 to 110.8 km.
Hypocenter depth recalculated from 110.8 to 108.5 km.
Hypocenter depth recalculated from 108.5 to 107.5 km.
Feb 17 09:33: Magnitude recalculated from 4.8 to 4.7.
Hypocenter depth recalculated from 107.5 to 98.9 km.
Date & time: 17 Feb 2020 09:18:06 UTC -
Local time at epicenter: 2020-02-17 00:18:06 -09:00
Magnitude: 4.7
Depth: 98.9 km
Epicenter latitude / longitude: 57.4893°N / 156.0305°W
(Gulf of Alaska, Alaska, United States)Nearest volcano: Ugashik-Peulik (20 km / 12 mi)
Nearby towns and cities:
82 km (51 mi) E of Ugashik (pop: 12) --> See nearby quakes!
207 km (128 mi) W of Kodiak Station (pop: 1,300) --> See nearby quakes!
218 km (136 mi) W of Kodiak (pop: 6,250) --> See nearby quakes!
353 km (220 mi) SW of Homer (pop: 5,520) --> See nearby quakes!
424 km (264 mi) SW of Kalifornsky (pop: 7,850) --> See nearby quakes!
437 km (271 mi) SW of Kenai (pop: 7,660) --> See nearby quakes!
438 km (272 mi) SW of Soldotna (pop: 4,540) --> See nearby quakes!
447 km (278 mi) SW of Nikiski (pop: 4,490) --> See nearby quakes!
453 km (282 mi) SW of Sterling (pop: 5,620) --> See nearby quakes!
491 km (305 mi) SE of Bethel (pop: 6,450) --> See nearby quakes!
153 km (95 mi) W of Kodiak Island (pop: 13,600) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 7.1 x 1011 joules (197 megawatt hours, equivalent to 169 tons of TNT) More info
Data for the same earthquake reported by different agencies
Info: The more agencies report about the same quake and post similar data, the more confidence you can have in the data. It takes normally up to a few hours until earthquake parameters are calculated with near-optimum precision.
| Magnitude | Depth | Location | Source |
| M 4.7 | 99 km | 114km SSE of King Salmon, Alaska (USA) | USGS |
| M 4.9 | 111 km | Alaska Peninsula (USA) | EMSC |
| M 5.0 | 101 km | Alaska Peninsula (USA) | GFZ |
| M 5.2 | 88 km | Alaska Peninsula (USA) | GeoAu |
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