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Posts Tagged ‘Fox Islands quake’

Two Powerful Quakes Strike Fox Islands, Alaska

Posted by feww on October 14, 2009

Two powerful Earthquakes Measuring 6.5 and 6.6 Mw Strike Fox Islands, Aleutian Islands, Alaska

The first earthquake a magnitude 6.5 quake struck on Tuesday, October 13, 2009 at 05:37:21 UTC at a depth of 18 km, followed by a swarm of smaller aftershocks and a second powerful shock measuring 6.6Mw, which struck some 15 hours later.

An earlier quake, also measuring M 6.6, struck the same region about 250km WNW of the recent cluster on October 2, 2009.
Two Powerful Quakes Strike Fox Islands, Alaska

FEWW Moderators have forecast a large earthquake for Kenai Peninsula, Southern Alaska. See links below

Based on the pattern in which the recent quakes are occurring, the Moderators believe a prolonged period of powerful seismic activity in the region may have begun.

This Earthquake:

10-degree Map Centered at 55°N,170°W

2009 October 13 20 -21- 54 UTC
Earthquake Location Map.
Source: USGS/EHP. Enhanced by FEWW

  • Magnitude: 6.6  [maximum quake magnitude estimated by FEWW]
  • Date-Time:
    • Tuesday, October 13, 2009 at 20:21:54 UTC
    • Tuesday, October 13, 2009 at 12:21:54 PM at epicenter
  • Location: 52.634°N, 167.149°W
  • Depth: 13.7 km (8.5 miles) (poorly constrained)
  • Region: FOX ISLANDS, ALEUTIAN ISLANDS, ALASKA
  • Distances:
    • 120 km (75 miles) ESE (106°) from Nikolski, AK
    • 146 km (90 miles) SSW (197°) from Unalaska, AK
    • 190 km (118 miles) SSW (209°) from Akutan, AK
    • 1413 km (878 miles) SW (236°) from Anchorage, AK
  • Location Uncertainty: horizontal +/- 8 km (5.0 miles); depth +/- 27.6 km (17.1 miles)
  • Source: USGS NEIC (WDCS-D)
  • Event ID: us2009mscj

Related Links:

Posted in Akutan quake, Earthquakes, feww earthquake forecast, North American plate, Pacific Plate, Plate Tectonics, seismic event report | Tagged: , , , , , | 3 Comments »

Alaska: Magnitude 6.6 Quake Strikes Fox Islands

Posted by feww on October 2, 2009

Details are still coming in … As of posting, USGS had not reported this event.

GFZ Potsdam – Earthquake Bulletin

Region: Fox Islands, Aleutian Islands
Time: 2009-10-02 01:15:25.3 UTC
Magnitude: 6.6
Epicenter: 170.54°W 53.35°N
Depth: 10 km
Status: automatic

Earthquake Location Map. Source:  GFZ Potsdam – Earthquake Bulletin. Image may be subject to copyright.

fox islands eq location
Earthquake Location – Google maps. Image may be subject to copyright.

About 7 minutes before the above event occurred, a magnitude 6.3 shock struck Tonga region near 16.579°S, 173.274°W,  at a depth of 10 km.

Related Links:

Posted in Carlisle volcano, CLEVELAND VOLCANO, earthquake forecast, Earthquakes, feww earthquake forecast | Tagged: , , , , , | 3 Comments »