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Old 10-28-2012, 02:11 AM
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Earthquake & Poss Tsunami Alert!!

Tsunami warning issued after 7.7 earthquake strikes British Columbia


Published October 27, 2012

Associated Press




The U.S. Coast Guard is warning people in far southern Alaska to take precautions after a tsunami warning was issued for coastal areas of Alaska and the Pacific Northwest.

The warning was sparked by a strong earthquake Saturday night that shook off the west coast of Canada. The U.S. Geological Survey said the 7.7-magnitude earthquake hit in the Queen Charlotte Islands area, followed by a 5.8-magnitude aftershock several minutes later.

The National Weather Service issued a warning for coastal areas of southern Alaska including the small communities of Craig and Sitka. The U.S. Coast Guard in Alaska said it's trying to warn everyone with a boat on the water to prepare for a potential tsunami.

Lt. Bernard Auth of the Juneau Command Center said the Coast Guard was also working with local authorities to alert people in coastal towns to take precautions.

Lucy Jones, a USGS seismologist, said the earthquake likely would not generate a large tsunami.

"This isn't that big of an earthquake on tsunami scales," she said. "The really big tsunamis are usually up in the high 8s and 9s."

She said the earthquake occurred along a "fairly long" fault - "a plate 200 kilometers long" in a subduction zone, where one plate slips underneath another. Such quakes lift the sea floor and tend to cause tsunamis, she said.



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Read more: http://www.foxnews.com/world/2012/10...#ixzz2AZEDLti2

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Old 10-28-2012, 06:09 AM
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Re: Earthquake & Poss Tsunami Alert!!


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Old 10-28-2012, 06:24 AM
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Re: Earthquake & Poss Tsunami Alert!!

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Old 10-28-2012, 08:25 AM
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Re: Earthquake & Poss Tsunami Alert!!

First Tsunami Waves Smaller than Predicted, Hit Hawaii After 7.7 Canada Earthquake

Quote:
A tsunami warning is in effect for the state of Hawaii, following a 7.7 earthquake off the coast of British Columbia Saturday night.

Although waves up to six feet were predicted, the first waves that reached the islands were much smaller than predicted.

Gerard Fryer of the Pacific Tsunami Warning Center told the Associated Press that the largest wave came in at 5 feet in Maui in the first 45 minutes.

Residents in low lying areas were evacuated and the warnings are expected to continue.

AP Photo/Eugene TannerVisitors and Oahu residents watch the water... View Full Size AP Photo/Eugene TannerVisitors and Oahu residents watch the water level in the Ala Wai Harbor waiting for the arrival of a tsunami Saturday, Oct. 27, 2012, in Honolulu. A tsunami warning has been issued for Hawaii after a 7.7-magnitude earthquake rocked an island off the west coast of Canada.
Honolulu mayor Peter Carlisle said while the waves were not as big as expected, officials have to remain cautious.

"These events are capricious; they're dangerous you have to always err on the side of safety," Carlisle said.

Saturday night's quake was centered around an island north of Vancouver in Canada.

A 5.8 aftershock measuring 5.8 was reported shortly after the first earthquake.

No major damage has been reported.

Jay Albrecht with the National Weather Service said the quake's impact was felt as far south as San Francisco.

"There is a tsunami advisory that's been issued for the Southern Oregon and Northern California coast and that goes from about 80 miles northwest of San Francisco, northward to a location about 10 miles southwest of Florence, Ore.," Albrecht said.

Visitors and Oahu residents watch the water level in the Ala Wai Harbor waiting for the arrival of a tsunami Saturday, Oct. 27, 2012, in Honolulu. A tsunami warning has been issued for Hawaii after a 7.7-magnitude earthquake rocked an island off the west coast of Canada

Code:
000
WEHW40 PHEB 281101
TSUHWX
HIZ001>003-005>009-012>014-016>021-023>026-281301-
/O.CAN.PHEB.TS.W.0001.000000T0000Z-000000T0000Z/
/O.NEW.PHEB.TS.Y.0001.121028T1054Z-000000T0000Z/

TSUNAMI MESSAGE NUMBER  10
NWS PACIFIC TSUNAMI WARNING CENTER EWA BEACH HI
101 AM HST SUN OCT 28 2012

TO - CIVIL DEFENSE IN THE STATE OF HAWAII

SUBJECT - TSUNAMI ADVISORY

THE TSUNAMI WARNING IS NOW 
CANCELLED FOR THE STATE OF HAWAII.

A TSUNAMI ADVISORY IS ISSUED FOR 
THE STATE OF HAWAII EFFECTIVE
AT 1254 AM HST.

AN EARTHQUAKE HAS OCCURRED 
WITH THESE PRELIMINARY PARAMETERS

   ORIGIN TIME - 0504 PM HST 27 OCT 2012
   COORDINATES - 52.8 NORTH  131.8 WEST
   LOCATION    - QUEEN CHARLOTTE ISLANDS REGION
   MAGNITUDE   - 7.7  MOMENT

EVALUATION

 BASED ON ALL AVAILABLE DATA 
THE TSUNAMI THREAT HAS 
DECREASED AND
 IS NOW AT THE ADVISORY 
LEVEL AND NOT EXPECTED TO INCREASE. 
SEA LEVEL CHANGES AND STRONG 
CURRENTS MAY STILL OCCUR ALONG ALL COASTS
THAT COULD BE A HAZARD TO SWIMMERS 
AND BOATERS AS WELL AS TO PERSONS
 NEAR THE SHORE AT BEACHES AND 
IN HARBORS AND MARINAS. THE THREAT
 MAY CONTINUE FOR SEVERAL HOURS.

MESSAGES WILL BE ISSUED HOURLY 
OR SOONER AS CONDITIONS WARRANT.
Code:
WEAK51 PAAQ 280502
TSUAK1

BULLETIN
PUBLIC TSUNAMI MESSAGE NUMBER 5
NWS WEST COAST/ALASKA TSUNAMI WARNING CENTER PALMER AK
1002 PM PDT SAT OCT 27 2012

THE WARNING ZONES REMAIN THE SAME IN THIS MESSAGE.
AN ADVISORY HAS BEEN ISSUED FOR 
THE REST OF BRITISH COLUMBIA-
SOUTH OF THE NORTH TIP OF 
VANCOUVER ISLAND.

...THE TSUNAMI WARNING CONTINUES 
IN EFFECT FOR THE COASTAL
   AREAS OF BRITISH COLUMBIA 
AND ALASKA FROM THE NORTH TIP 
OF
   VANCOUVER ISLAND BRITISH 
COLUMBIA TO CAPE DECISION
   ALASKA/LOCATED 85 MILES SE 
OF SITKA/...

...A TSUNAMI ADVISORY IS NOW IN 
EFFECT WHICH INCLUDES THE
   COASTAL AREAS OF BRITISH 
COLUMBIA FROM THE
   WASHINGTON-BRITISH COLUMBIA 
BORDER TO THE NORTH TIP OF
   VANCOUVER ISLAND 
BRITISH COLUMBIA...

...THIS MESSAGE IS INFORMATION 
ONLY FOR COASTAL AREAS OF
   CALIFORNIA - OREGON AND 
ASHINGTON FROM THE
   CALIFORNIA-MEXICO BORDER TO THE WASHINGTON-
RITISH COLUMBIA
   BORDER...

...THIS MESSAGE IS INFORMATION 
ONLY FOR COASTAL AREAS OF
   ALASKA FROM CAPE DECISION ALASKA/LOCATED 85 MILES SE OF
   SITKA/ TO ATTU ALASKA...

A TSUNAMI WARNING MEANS... 
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.
A TSUNAMI HAS BEEN RECORDED.

A TSUNAMI ADVISORY MEANS THAT A 
TSUNAMI CAPABLE OF PRODUCING
STRONG CURRENTS OR WAVES DANGEROUS TO PEOPLE IN OR VERY NEAR
THE WATER IS EXPECTED.  SIGNIFICANT WIDESPREAD INUNDATION
IS NOT EXPECTED FOR AREAS UNDER AN ADVISORY.  CURRENTS
MAY BE HAZARDOUS TO SWIMMERS... BOATS... AND COASTAL
STRUCTURES AND MAY CONTINUE FOR SEVERAL HOURS AFTER THE
INITIAL WAVE ARRIVAL.

AT 804 PM PACIFIC DAYLIGHT TIME ON OCTOBER 27 AN EARTHQUAKE WITH
PRELIMINARY MAGNITUDE 7.7 OCCURRED 25 MILES/40 KM SOUTH OF
SANDSPIT BRITISH COLUMBIA.
THIS EARTHQUAKE HAS GENERATED A TSUNAMI WHICH COULD CAUSE DAMAGE
TO REGIONS IN A WARNING OR ADVISORY.
THE WAVES WILL FIRST REACH
LANGARA ISLAND BRITISH COLUMBIA AT 916 PM PDT ON OCTOBER 27.
ESTIMATED TSUNAMI ARRIVAL TIMES AND MAPS ALONG WITH SAFETY RULES
AND OTHER INFORMATION CAN BE FOUND ON THE WEB SITE 
WCATWC.ARH.NOAA.GOV.

MEASUREMENTS OR REPORTS OF TSUNAMI ACTIVITY

 LOCATION                   LAT    LON     TIME        AMPL
 ------------------------  -----  ------  -------     -----------
 DART46419PT NW SEATTLE    48.8N  129.6W  0345UTC   00.2FT/00.07M
 CRAIG  AK                 55.5N  133.1W  0425UTC   00.3FT/00.09M
 PORT ALEXANDER  AK        56.2N  134.6W  0410UTC   00.3FT/00.08M
 WINTER HARBOUR  BC        50.7N  128.3W  0402UTC   00.5FT/00.15M

TIME - TIME OF MEASUREMENT
AMPL - TSUNAMI AMPLITUDES ARE MEASURED RELATIVE TO NORMAL SEA LEVEL.
       IT IS ...NOT... CREST-TO-TROUGH WAVE HEIGHT.
       VALUES ARE GIVEN IN BOTH METERS/M/ AND FEET/FT/.

TSUNAMIS CAN BE DANGEROUS WAVES THAT ARE NOT SURVIVABLE. WAVE
HEIGHTS ARE AMPLIFIED BY IRREGULAR SHORELINE AND ARE DIFFICULT TO
FORECAST. TSUNAMIS OFTEN APPEAR AS A STRONG SURGE AND MAY BE
PRECEDED BY A RECEDING WATER LEVEL.  MARINERS IN WATER DEEPER
THAN 600 FEET SHOULD NOT BE 
AFFECTED BY A TSUNAMI. WAVE HEIGHTS
WILL INCREASE RAPIDLY AS WATER 
SHALLOWS. TSUNAMIS ARE A SERIES OF
OCEAN WAVES WHICH CAN BE DANGEROUS FOR SEVERAL HOURS AFTER THE
INITIAL WAVE ARRIVAL. DO NOT RETURN TO EVACUATED AREAS UNTIL AN
ALL CLEAR IS GIVEN BY LOCAL CIVIL AUTHORITIES.

PACIFIC COASTAL REGIONS OUTSIDE CALIFORNIA/ OREGON/ WASHINGTON/ 
BRITISH COLUMBIA AND ALASKA 
SHOULD REFER TO THE PACIFIC TSUNAMI 
WARNING CENTER MESSAGES 
FOR INFORMATION ON THIS EVENT AT
PTWC.WEATHER.GOV.

THIS MESSAGE WILL BE UPDATED 
IN 30 MINUTES OR SOONER IF
THE SITUATION WARRANTS. 
THE TSUNAMI MESSAGE WILL REMAIN
IN EFFECT UNTIL FURTHER NOTICE. 
FOR FURTHER INFORMATION STAY TUNED
TO NOAA WEATHER RADIO... 
YOUR LOCAL TV OR RADIO STATIONS... OR SEE
THE WEB SITE WCATWC.ARH.NOAA.GOV.
http://ptwc.weather.gov/ptwc/text.ph...012.10.28.1101
http://ptwc.weather.gov/
http://earthquake.usgs.gov/earthquak...usb000df7n.php
http://wcatwc.arh.noaa.gov/

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Old 10-28-2012, 12:02 PM
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Re: Earthquake & Poss Tsunami Alert!!

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