Alaska 6.8 Earthquake Registered - Tsunami warning Cancelled

[kiwibird]

http://wcatwc.arh.noaa.gov/2011/09/02/lqw6d6/01/messagelqw6d6-01.htm

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).

This message is for Information Only for coastal areas of California, Oregon, Washington, British Columbia and Alaska from the California-Mexico border to Unimak Pass, Alaska (80 miles NE of Dutch Harbor).

This message is for Information Only for coastal areas of Alaska from Amchitka Pass, Alaska (125 miles W of Adak) to Attu, Alaska.

A Tsunami Warning means that all coastal residents in the warning area who are near the beach or in low-lying regions should move immediately inland to higher ground and away from all harbors and inlets including those sheltered directly from the sea. Those feeling the earth shake, seeing unusual wave action, or the water level rising or receding may have only a few minutes before the tsunami arrival and should move immediately. Homes and small buildings are not designed to withstand tsunami impacts. Do not stay in these structures.

All residents within the warned area should be alert for instructions broadcast from their local civil authorities. Earthquakes of this magnitude are known to generate tsunamis.

At 2:56 AM Alaskan Daylight Time on September 2, an earthquake with preliminary magnitude 7.1 occurred 45 miles/72 Km southeast of Amukta Pass, Alaska . (Refer to the United States Geological Survey for official earthquake parameters.) Earthquakes of this size are known to generate tsunamis. If a tsunami has been generated, the waves will first reach Adak, Alaska at 3:52 AM AKDT on September 2. Estimated tsunami arrival times and maps along with safety rules and other information can be found on the WCATWC web site.

 

[kiwibird]

Re: Alaska 7.1 Earthquake Registered - Tsunami warning issued

Re: Alaska 7.1 Earthquake Registered - Tsunami warning issued

BBC reports that the tsunami alert is of main concern to Atka, an island nearest the epicentre and a major fishing communinity. The island is one of the most westerly of the Aleutian Island group.

 

[Ronan Kelly]

Re: Alaska 7.1 Earthquake Registered - Tsunami warning issued

Re: Alaska 7.1 Earthquake Registered - Tsunami warning issued

Earthquake Details
This event has been reviewed by a seismologist.
Magnitude 7.1
Date-Time Friday, September 02, 2011 at 10:55:54 UTC
Friday, September 02, 2011 at 01:55:54 AM at epicenter
Time of Earthquake in other Time Zones

Location 52.184?N, 171.684?W
Depth 35.5 km (22.1 miles)
Region FOX ISLANDS, ALEUTIAN ISLANDS, ALASKA
Distances 172 km (107 miles) E (90?) from Atka, AK
209 km (130 miles) WSW (247?) from Nikolski, AK
341 km (212 miles) E (82?) from Adak, AK
1659 km (1031 miles) WSW (243?) from Anchorage, AK

Location Uncertainty horizontal +/- 14 km (8.7 miles); depth +/- 4.4 km (2.7 miles)
Parameters NST=824, Nph=825, Dmin=172.5 km, Rmss=0.81 sec, Gp= 54?,
M-type=regional moment magnitude (Mw), Version=9
Source Magnitude: USGS NEIC (WDCS-D)
Location: USGS NEIC (WDCS-D)

Event ID usc0005n83
http://earthquake.usgs.gov/earthquakes/recenteqsus/Quakes/usc0005n83.php

 

[makoto]

Re: Alaska 7.1 Earthquake Registered - Tsunami warning issued

Re: Alaska 7.1 Earthquake Registered - Tsunami warning issued



jma http://www.jma.go.jp/en/quake/20110902204522494-021956.html

 

[Missouriwatcher]

Re: Alaska 7.1 Earthquake Registered - Tsunami warning issued

Re: Alaska 7.1 Earthquake Registered - Tsunami warning issued

aftershock 4.5 quake 2011/09/02 11:24:26 FOX ISLANDS, ALEUTIAN ISLANDS, ALASKA
http://earthquake.usgs.gov/earthquakes/recenteqsww/Quakes/quakes_all.html

 

[Ronan Kelly]

Re: Alaska 7.1 Earthquake Registered - Tsunami warning issued

Re: Alaska 7.1 Earthquake Registered - Tsunami warning issued

The 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).

NO destructive tsunami has been recorded, and NO tsunami danger exists along the coasts of the U.S. west coast states, Alaska, and British Columbia. Local authorities can assume all clear upon receipt of this message.

At 2:56 AM Alaskan Daylight Time on September 2, an earthquake with preliminary magnitude 7.1 occurred 45 miles/72 Km southeast of Amukta Pass, Alaska . (Refer to the United States Geological Survey for official earthquake parameters.)

Pacific coastal regions outside California, Oregon, Washington, British Columbia, and Alaska should refer to the Pacific Tsunami Warning Center messages for information on the event.

This will be the last West Coast/Alaska Tsunami Warning Center message issued for this event. To repeat, NO tsunami warning, watch or advisory is in effect for the U.S. West coast states, Alaska, and British Columbia. See the WCATWC web site for basic tsunami information, safety rules, and a tsunami travel time map and table. (NOTE: Travel time maps and tables indicate forecasted times only, not that a wave was generated.)


http://wcatwc.arh.noaa.gov/2011/09/02/lqw6d6/03/messagelqw6d6-03.htm

 

[Missouriwatcher]

Re: Alaska 7.1 Earthquake Registered - Tsunami warning Cancelled

Re: Alaska 7.1 Earthquake Registered - Tsunami warning Cancelled

The 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).
http://wcatwc.arh.noaa.gov/2011/09/02/lqw6d6/03/messagelqw6d6-03.htm

http://ptwc.weather.gov/ptwc/?region=0

 

[Missouriwatcher]

Re: Alaska 7.1 Earthquake Registered - Tsunami warning Cancelled

Re: Alaska 7.1 Earthquake Registered - Tsunami warning Cancelled

Additional aftershocks
5.1 2011/09/02 18:28:42 51.914 -171.544 40.0 FOX ISLANDS, ALEUTIAN ISLANDS, ALASKA
3.3 2011/09/02 17:39:41 58.338 -150.929 51.2 GULF OF ALASKA
4.7 2011/09/02 17:39:11 51.719 -171.333 28.4 FOX ISLANDS, ALEUTIAN ISLANDS, ALASKA
4.3 2011/09/02 12:16:54 51.646 -170.467 35.0 FOX ISLANDS, ALEUTIAN ISLANDS, ALASKA
3.9 2011/09/02 12:16:50 52.277 -171.594 41.9 FOX ISLANDS, ALEUTIAN ISLANDS, ALASKA
4.8 2011/09/02 11:27:44 51.922 -171.550 35.2 FOX ISLANDS, ALEUTIAN ISLANDS, ALASKA
4.5 2011/09/02 11:24:26 53.829 -168.256 35.2 FOX ISLANDS, ALEUTIAN ISLANDS, ALASKA
4.5 2011/09/02 11:23:54 51.941 -171.415 41.5 FOX ISLANDS, ALEUTIAN ISLANDS, ALASKA
http://earthquake.usgs.gov/earthquakes/recenteqsww/Quakes/quakes_all.html

 

[Missouriwatcher]

Re: Alaska 6.8 Earthquake Registered - Tsunami warning Cancelled

Downgraded to 6.8
http://earthquake.usgs.gov/earthquakes/recenteqsww/Quakes/quakes_all.html