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Strong mag. 6.5 earthquake - Southern Alaska on Wednesday, 29 July 2015

Strong mag. 6.3 earthquake - Southern Alaska on Wednesday, 29 July 2015

Strong mag. 6.3 earthquake  - Southern Alaska on Wednesday, 29 July 2015
29 Jul 02:45 UTC: First to report: GFZ after 9 minutes.
Jul 29 07:10: Magnitude recalculated from 6.2 to 6.3.
Date & time: Wednesday, 29 July 2015 02:35 UTC
Magnitude: 6.3
Depth: 114.0 km
Epicenter latitude / longitude: 60.05°N / 153.49°W (United States)
Nearest volcano: Iliamna (18 km / 11 mi)
Nearby towns and cities:
45 km (28 mi) NE of Pedro Bay (pop: 0)
49 km (30 mi) SE of Port Alsworth (pop: 200)
76 km (47 mi) E of Nondalton (pop: 200)
128 km (80 mi) SW of Kalifornsky (pop: 7,900)
135 km (84 mi) SW of Kenai (pop: 7,700)
160 km (99 mi) SW of Sterling (pop: 5,600)
Primary data source: GFZ
Estimated released energy: 1.8 x 1014 joules (49.4 gigawatt hours, equivalent to 42502 tons of TNT or 2.7 atomic bombs!) [learn more]
If you felt this quake (or if you were near the epicenter), please share your experience and submit a short "I felt it" report! Other users would love to hear about it!
Also if you did NOT feel the quake although you were in the area, please report it! Your contribution is valuable also to earthquake science and earthquake hazard analysis and mitigation efforts. You can use your device location or the map to indicate where you were during the earthquake. Thank you!

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.
TimeMag. / DepthLocationSource
Wed, 29 Jul 02:35 UTCM 6.3 / 114 kmSouthern AlaskaGFZ
Wed, 29 Jul 02:35 UTCM 6.3 / 117 kmSOUTHERN ALASKAEMSC
2015-07-28 18:35:59 -08:00 (29 Jul 02:35:59 UTC)M 6.3 / 116.6 km- 71km SSW of Redoubt Volcano, AlaskaUSGS
Wed, 29 Jul 02:35 UTCM 6.3 / 116 kmSSW of Redoubt Volcano, AlaskaGeoAu

shake map
(shakemap: USGS)

User reports for this quake (36)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
Contribute:
Leave a comment if you find a particular report interesting or want to add to it.
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Mark as helpful or interesting.
Send your own user report!
Soldotna / Moderate shaking (MMI V) : The whole house rippled for several moments. I got a bit queasy.
Fairbanks (614.8 km NNE of epicenter) [Map] / not felt
Seward, AK / Weak shaking (MMI III) : Light fixtures swayed.... Staircase vibrated...
Anchorage ak / Moderate shaking (MMI V)
Valdez, AK / Strong shaking (MMI VI)
Kodiak / Light shaking (MMI IV) : I felt two lateral jerks, significant, but brief.
Anchorage, AK / Light shaking (MMI IV)
Double Musky Inn - Girdwood, AK / Moderate shaking (MMI V) : Having dinner with 3 friends and had a good bouncing for about 15 seconds.
Homer (119 km ESE of epicenter) [Map] / Moderate shaking (MMI V) : Prolonged moderate shaking in three waves. Vertical blinds swayed by over a foot in mirror.
Homer (119 km ESE of epicenter) [Map] / Moderate shaking (MMI V) : Prolonged moderate shaking in three waves. Vertical blinds swayed by over a foot in mirror.
East Anchorage (241.1 km NE of epicenter) [Map] / Weak shaking (MMI III) : Lasted forever, even if it was only a swaying type of motion.
Wasilla (282.6 km NE of epicenter) [Map] / Moderate shaking (MMI V)
Glacier Blue Av. (161.4 km ENE of epicenter) [Map] / Weak shaking (MMI III)
99502 / Moderate shaking (MMI V)
Eagle river / Strong shaking (MMI VI)
Soldotna, Alaska (136.6 km ENE of epicenter) [Map] / Light shaking (MMI IV)
Chugiak (277.9 km NE of epicenter) [Map] / Moderate shaking (MMI V)
Wasilla, AK / Strong shaking (MMI VI)
Wasilla, AK / Violent shaking (MMI IX)
Spenard Rd. Anchorage (231.1 km NE of epicenter) [Map] / Moderate shaking (MMI V) : /started with a shaking followed by rolling sensation. curtains swayed and table lamps shook. It lasted about 15 seconds. Location Spenard Rd in Anchorage.
99504 / Strong shaking (MMI VI)
99503 / Strong shaking (MMI VI) : Unable to walk
99503 / Strong shaking (MMI VI)
Kenai, alaska / Moderate shaking (MMI V) : Tipped my glass birds over.
Kodiak, AK (258.9 km SSE of epicenter) [Map] / Very weak shaking (MMI II)
JBER / Moderate shaking (MMI V)
Talkeetna (United States, 312 km NE of epicenter) : Rumbled for longer than normal (reported through EMSC)
Wasilla (United States, 276 km NE of epicenter) : We lost some water out of the above ground swimming pool,due to the balloon edge not filled up enough. (reported through EMSC)
Anchorage (United States, 234 km NE of epicenter) : Definitely a rumbler. Everything swayed. (reported through EMSC)
Anchorage (United States, 233 km NE of epicenter) : while I have felt other earthquakes that took a few seconds for me determine if we were having an earthquake, this time I immediately knew, and told son to head outside. It was short, but more than one quick jerk.More like a shaking. (reported through EMSC)
Sterling (United States, 156 km NE of epicenter) : At the store things were clinking and rattling and the mobile was shaking (reported through EMSC)
Nikiski (United States, 138 km NE of epicenter) : It was the strongest earthquake I have ever felt in Alaska. (reported through EMSC)
Anchorage (United States, 229 km NE of epicenter) : It quickly got my attention. Lots of rocking back and forth. (reported through EMSC)
Anchorage (United States, 229 km NE of epicenter) : Felt it for a slight moment between the P and S waves arriving (reported through EMSC)
Anchorage (United States, 229 km NE of epicenter) : came n 2 waves, first felt like a large truck driving bye then after a few seconds break the whole building did a large swaying motion (reported through EMSC)
Anchorage (United States, 229 km NE of epicenter) : It seemed to roll in, then roll out, under foot. After-shocks were gentle rolling. (reported through EMSC)

Aftershocks of the 6.3 quake: Southern Alaska, 29 Jul 2015 02:35

More info
Recorded aftershocks, latest first (544 quakes):
  • 25 Jan 2016 01:30 UTC
    | M 2.8 |
    101.6 km (63.1 mi) depth
    |
    39 km (24 mi) distance
    | USGS | Details
  • 25 Jan 2016 01:11 UTC
    | M 2.0 |
    109.7 km (68.2 mi) depth
    |
    40 km (25 mi) distance
    | USGS | Details
  • 25 Jan 2016 00:52 UTC
    | M 2.3 |
    6.8 km (4.2 mi) depth
    |
    83 km (51 mi) distance
    | USGS | Details
  • 25 Jan 2016 00:46 UTC
    | M 2.5 |
    106.8 km (66.4 mi) depth
    |
    40 km (25 mi) distance
    | USGS | Details
  • 25 Jan 2016 00:34 UTC
    | M 2.2 |
    101.3 km (62.9 mi) depth
    |
    41 km (26 mi) distance
    | USGS | Details
  • 25 Jan 2016 00:24 UTC
    | M 2.8 |
    95.5 km (59.3 mi) depth
    |
    42 km (26 mi) distance
    | USGS | Details
  • 25 Jan 2016 00:21 UTC
    | M 2.1 |
    28.3 km (17.6 mi) depth
    |
    57 km (35 mi) distance
    | USGS | Details
  • 25 Jan 2016 00:13 UTC
    | M 2.5 |
    57.3 km (35.6 mi) depth
    |
    55 km (34 mi) distance
    | USGS | Details
  • 24 Jan 2016 23:49 UTC
    | M 2.5 |
    102.3 km (63.6 mi) depth
    |
    40 km (25 mi) distance
    | USGS | Details
  • 24 Jan 2016 23:32 UTC
    | M 3.0 |
    107.8 km (67 mi) depth
    |
    45 km (28 mi) distance
    | USGS | Details
  • 24 Jan 2016 23:28 UTC
    | M 2.5 |
    97 km (60.3 mi) depth
    |
    32 km (20 mi) distance
    | EMSC | Details
  • 24 Jan 2016 23:28 UTC
    | M 2.5 |
    96.7 km (60.1 mi) depth
    |
    32 km (20 mi) distance
    | USGS | Details
  • 24 Jan 2016 23:19 UTC
    | M 2.2 |
    108.1 km (67.2 mi) depth
    |
    42 km (26 mi) distance
    | USGS | Details
  • 24 Jan 2016 22:53 UTC
    | M 2.4 |
    100.7 km (62.6 mi) depth
    |
    80 km (50 mi) distance
    | USGS | Details
  • 24 Jan 2016 22:19 UTC
    | M 2.2 |
    112.5 km (69.9 mi) depth
    |
    43 km (26 mi) distance
    | USGS | Details
  • 24 Jan 2016 22:17 UTC
    | M 2.6 |
    97.4 km (60.5 mi) depth
    |
    36 km (23 mi) distance
    | USGS | Details
  • Show all

Earlier earthquakes in the same area

Strong mag. 6.3 earthquake - Southern Alaska on Wednesday, 29 July 2015
 

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