Massive earthquake on the subduction slopes of unpopulated Alaskan Islands

Last update: September 2, 2011 at 10:47 pm by By

Earthquake overview : A massive earthquake struck during the early night (01:55 AM local time). Closest islands are Yunaska Island and Mount Seguam at more than 60 km distance (40 miles)
"I have Felt it" Reports –> see below + Let us know how you have felt this earthquake

To read the full story as it happened, we advise our readers to start at the lower part of the page (earthquake data).

UPDATE 16:04 UTC : Since the mainshock a lot of aftershocks have been hitting this volcanic area only populated by birds.  The magnitudes were respectively : 4.5, 4.5, 4.8, 3.9 and 4.3

UPDATE 12:02 UTC: Tsunami Warning is canceled for the coastal areas from Unimak Pass, Alaska (80 miles NE of Dutch Harbor) to Amchitka Pass, Alaska (125 miles W of Adak). Click here for the NOAA message

UPDATE 11:40 UTC : NOAA Tsunami warning remains in effect untill the data of the level gauges will reach them

UPDATE : GDACS calculations are reporting only a tsunami risk of 0.1 meter in unpopulated Nikolski

UPDATE : This is the NOAA tsunami page

UPDATE : Wapmerr, the theoretical damage and injury engine has calculated that NO damage or Injuries will be inflicted based on the shaking. We have the same opinion.

UPDATE : Apart from the tsunami danger, there is NO real shaking danger as only 188 people will endure a light shaking.

UPDATE : A Tsunami Warning is now in effect which includes the coastal areas of Alaska from Unimak Pass, Alaska (80 miles NE of Dutch Harbor) to Amchitka Pass, Alaska (125 miles W of Adak).

"I Have Felt It" reports as received by Earthquake-Report.com
MMI values (if indicated) after the text (III: Weak shaking, IV Light shaking, V Moderate shaking, VI Strong shaking, VII Very Strong shaking)
- No Felt reports as yet, be the first to send us what you experienced.

Most important Earthquake Data:
Magnitude : 7.1
UTC Time : Friday, September 02, 2011 at 10:55:52 UTC
Local time at epicenter : Friday, September 02, 2011 at 01:55:52 AM at epicenter
Depth (Hypocenter) : 10 km (very shallow)
Geo-location(s) :
192 km (120 miles) ESE (102°) from Atka, AK
218 km (135 miles) SW (236°) from Nikolski, AK
355 km (221 miles) E (89°) from Adak, AK
1679 km (1043 miles) WSW (241°) from Anchorage, AK

Links to important maps
USGS Did You Feel It Map
Google satellite map of the area showing the kind of terrain the earthquake took place

Historic earthquakes map
Seismic hazard mapS
Shaking map
Focal mechanism report
Human impact map
GDACS earthquake report
GDACS tsunami report

NOAA tsunami report
3-dimensional view of the earthquake area (USGS epicenter location)

QuakeSOS+ and QuakeSOS free are iPhone applications developed by Armand Vervaeck, the founder of Earthquake Report. The Application simplifies immediate group communication to friends and family members (with your exact GPS location) and is feeding the users with Earthquake Report news. The 0.99 US$ QuakeSOS+ version will support the activities of SOS Earthquakes.

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I did feel it – Ik heb het gevoeld – Το έκανα αισθάνεται – Yo lo siento – 我的确感到了 – 私はそれを感じていました- Ich habe es gefühlt – Bunu hissediyorum yaptı – لم أشعر أنه

Comments

  1. HelenaSophiaHi says:

    Amazing that we had an earthquake here in Kalapana ~ 6.5 hours later. Unfortunately though I believe we will get a massive event within the next two weeks. The Pacific plate is moving heavily at the seams and a change of direction seems to be in progress. Looking at the earthquake data for this year, three locations appear to be predestined for this scenario. Japan & Aleutian Islands, Vanuatu & New Zealand and Chile. All I can say is to use common sense while in, on, or around the ocean.
    The world has started to change its face and it doesn't look like a smile right now…

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