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Weak mag. 3.6 earthquake - 24 mi southwest of Skwentna, Matanuska-Susitna, Alaska, USA, on Friday, September 26, 2014 04:09:18

This quake was likely an aftershock of the 6.2 quake 13 mi west of Skwentna, Matanuska-Susitna, Alaska, USA, Thursday, September 25, 2014 09:51:17, which had occurred 18 hours earlier.

Weak mag. 3.6 earthquake - 24 mi southwest of Skwentna, Matanuska-Susitna, Alaska, USA, on Friday, September 26, 2014 04:09:18

Weak magnitude 3.6 earthquake at 98 km depth

26 Sep 15:10 UTC: First to report: USGS after 3 hours.
Sep 26 17:10: Magnitude recalculated from 3.7 to 3.6.
Hypocenter depth recalculated from 64.4 to 97.7 km.

Earthquake details

Date & time	Sep 26, 2014 12:09:18 UTC
Local time at epicenter	Friday, September 26, 2014 04:09:18
Status	Confirmed
Magnitude	3.6
Depth	97.7 km
Epicenter latitude / longitude	61.6897°N / 151.7737°W (Matanuska-Susitna, Alaska, United States)
Antipode	61.69°S / 28.226°E
Shaking intensity	Very weak shaking
Felt	0 reports
Primary data source	USGS (United States Geological Survey)
Nearest volcano	Hayes (52 km / 32 mi)
Nearby towns and cities	39 km (24 mi) SSW of Skwentna (pop: 37) \| Show on map \| Quakes nearby 92 km (57 mi) W of Willow Creek (pop: 2,100) \| Show on map \| Quakes nearby 98 km (61 mi) W of Big Lake (pop: 3,350) \| Show on map \| Quakes nearby 113 km (70 mi) WNW of Alaska City (pop: 298,700) \| Show on map \| Quakes nearby 114 km (71 mi) NNW of Nikiski (pop: 4,490) \| Show on map \| Quakes nearby 117 km (72 mi) W of Knik-Fairview (pop: 14,900) \| Show on map \| Quakes nearby 124 km (77 mi) W of Wasilla (pop: 9,280) \| Show on map \| Quakes nearby 124 km (77 mi) WNW of Eagle River (pop: 24,800) \| Show on map \| Quakes nearby 124 km (77 mi) WNW of Eagle River (Anchorage) (pop: 24,800) \| Show on map \| Quakes nearby 129 km (80 mi) NNW of Kenai (pop: 7,660) \| Show on map \| Quakes nearby
Weather at epicenter at time of quake
Estimated seismic energy released	1.6 x 10¹⁰ joules (4.4 megawatt hours, equivalent to 3.79 tons of TNT) \| about seismic energy

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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.

Mag.	Depth	Location	Source
3.6	98 km	92km W of Willow, Alaska	USGS

Most recent quakes Top 20 past 24 hrs Quakes in the US Alaska

Seismograms

Seismic station: Strandline Lake, Regional Station, Alaska (STLK/AV network) | Distance from quake: 22 km / 13 mi | Show on map | Station Info

Seismic station Strandline Lake, Regional Station, Alaska: vertical movement plot around time of quake (source: IRIS/BUD)

Seismogram (vertical component) around time of quake. Thin dotted red line indicates time of quake. Seismic waves arrive some time later, depending on distance. Source: IRIS Buffer of Uniform Data (BUD) webtool

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Seismic station Strandline Lake, Regional Station, Alaska: horizontal (E-W) movement plot around time of quake (source: IRIS/BUD)

Seismic station Strandline Lake, Regional Station, Alaska: horizontal (N-S) movement plot around time of quake (source: IRIS/BUD)

Seismograms around time of quake, showing horizontal E-W and N-S ground movements. Source: IRIS Buffer of Uniform Data (BUD) webtool

Seismic station: Mount Spurr, Mount Spurr, Alaska (SPU/AV network) | Distance from quake: 59 km / 36 mi | Show on map | Station Info

Seismic station Mount Spurr, Mount Spurr, Alaska: vertical movement plot around time of quake (source: IRIS/BUD)

Seismic station Mount Spurr, Mount Spurr, Alaska: horizontal (E-W) movement plot around time of quake (source: IRIS/BUD)

Seismic station Mount Spurr, Mount Spurr, Alaska: horizontal (N-S) movement plot around time of quake (source: IRIS/BUD)

Seismograms around time of quake.
Top: vertical movement, bottom: horizontal (E-W and N-S) movements. Source: IRIS Buffer of Uniform Data (BUD) webtool

Seismic station: Drift River Broadband, Redoubt Volcano, Alaska (RDDF/AV network) | Distance from quake: 132 km / 82 mi | Show on map | Station Info

Seismic station Drift River Broadband, Redoubt Volcano, Alaska: vertical movement plot around time of quake (source: IRIS/BUD)

Seismic station Drift River Broadband, Redoubt Volcano, Alaska: horizontal (E-W) movement plot around time of quake (source: IRIS/BUD)

Seismic station Drift River Broadband, Redoubt Volcano, Alaska: horizontal (N-S) movement plot around time of quake (source: IRIS/BUD)

Seismograms around time of quake.
Top: vertical movement, bottom: horizontal (E-W and N-S) movements. Source: IRIS Buffer of Uniform Data (BUD) webtool

Seismic station: Koktuh Hills, AK, USA (O18K/AK network) | Distance from quake: 276 km / 172 mi | Show on map | Station Info

Seismic station Koktuh Hills, AK, USA: vertical movement plot around time of quake (source: IRIS/BUD)

Seismic station Koktuh Hills, AK, USA: horizontal (E-W) movement plot around time of quake (source: IRIS/BUD)

Seismic station Koktuh Hills, AK, USA: horizontal (N-S) movement plot around time of quake (source: IRIS/BUD)

Seismograms around time of quake.
Top: vertical movement, bottom: horizontal (E-W and N-S) movements. Source: IRIS Buffer of Uniform Data (BUD) webtool

Seismic station: Logan Glacier, AK, USA (LOGN/AK network) | Distance from quake: 583 km / 362 mi | Show on map | Station Info

Seismic station Logan Glacier, AK, USA: vertical movement plot around time of quake (source: IRIS/BUD)

Seismic station Logan Glacier, AK, USA: horizontal (E-W) movement plot around time of quake (source: IRIS/BUD)

Seismic station Logan Glacier, AK, USA: horizontal (N-S) movement plot around time of quake (source: IRIS/BUD)

Seismograms around time of quake.
Top: vertical movement, bottom: horizontal (E-W and N-S) movements. Source: IRIS Buffer of Uniform Data (BUD) webtool

User reports for this quake

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.

There are no user reports for this quake.

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