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and then

7.7 Earthquake off coast of southern Alaska

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CNN reports a 7.7 earthquake off southern Alaskan coast with a Tsunami warning in effect.

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Ouch time.

Not good, not good at all.

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Still nothing on the news here. What time do they expect it to hit?

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check this out http://www.ndbc.noaa...=20130105090615

very high wave may be moving in

Did I read that right? was that a 24 metre jump?

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Tsunami warnings were canceled around 3am Pacific time:

http://wcatwc.arh.noaa.gov/

The text of the bulletin cancelling the warning:

http://wcatwc.arh.noaa.gov/events/PAAQ/2013/01/05/mg5a94/4/WEAK51/WEAK51.txt

WEAK51 PAAQ 051058

TSUAK1

BULLETIN

PUBLIC TSUNAMI MESSAGE NUMBER 4

NWS WEST COAST/ALASKA TSUNAMI WARNING CENTER PALMER AK

158 AM AKST SAT JAN 5 2013

...THE TSUNAMI WARNING IS CANCELLED...

CANCELLATIONS

-------------

* THE TSUNAMI WARNING IS CANCELED FOR THE COASTAL AREAS OF

BRITISH COLUMBIA AND ALASKA FROM THE NORTH TIP OF VANCOUVER

ISLAND BRITISH COLUMBIA TO CAPE FAIRWEATHER ALASKA/LOCATED

80 MILES SE OF YAKUTAT/

IMPACTS - UPDATED

-----------------

* A TSUNAMI WAS GENERATED DURING THIS EVENT BUT NO LONGER

POSES A THREAT.

* SOME AREAS MAY CONTINUE TO SEE SMALL SEA LEVEL CHANGES.

* THE DETERMINATION TO RE-OCCUPY HAZARD ZONES MUST BE MADE BY

LOCAL OFFICIALS.

RECOMMENDED ACTIONS - UPDATED

-----------------------------

* DO NOT RE-OCCUPY HAZARD ZONES UNTIL LOCAL EMERGENCY OFFICIALS

INDICATE IT IS SAFE TO DO SO.

OBSERVATIONS OF TSUNAMI ACTIVITY - UPDATED

------------------------------------------

TIME OBSERVED MAX

SITE OF MEASUREMENT TSUNAMI HEIGHT

---------------------------- --------------- --------------

PORT ALEXANDER AK 1026 UTC 01-05 00.5FT

SITKA AK 1041 UTC 01-05 00.3FT

HEIGHT - OBSERVED MAX TSUNAMI HEIGHT IS THE WATER LEVEL ABOVE THE

TIDE LEVEL AT THE TIME OF MEASUREMENT.

DEEP OCEAN PRESSURE SENSORS DID NOT RECORD A TSUNAMI.

NEXT UPDATE AND ADDITIONAL INFORMATION

--------------------------------------

* THIS WILL BE THE LAST WEST COAST/ALASKA TSUNAMI WARNING CENTER

BULLETIN ISSUED FOR THIS EVENT.

* REFER TO THE INTERNET SITE WCATWC.ARH.NOAA.GOV FOR MORE

INFORMATION.

* PACIFIC COASTAL REGIONS OUTSIDE CALIFORNIA... OREGON...

WASHINGTON... BRITISH COLUMBIA AND ALASKA SHOULD REFER TO THE

PACIFIC TSUNAMI WARNING CENTER MESSAGES FOR INFORMATION AT

PTWC.WEATHER.GOV.

$$

Cz

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Posted (edited)

Did I read that right? was that a 24 metre jump?

Actually, it was just under 14 meters... in the course of 15 seconds.

If you look at all the reported data you will see that there was a spike at one of the reporting intervals:

2013 01 05 09 08 00 2 2739.077

2013 01 05 09 07 45 3 2739.072

2013 01 05 09 07 30 3 2739.083

2013 01 05 09 07 15 3 2739.064

2013 01 05 09 07 00 3 2739.055

2013 01 05 09 07 00 2 2739.074

2013 01 05 09 06 45 3 2739.077

2013 01 05 09 06 30 3 2752.514

2013 01 05 09 06 15 3 2739.054

2013 01 05 09 06 00 3 2739.095

2013 01 05 09 06 00 2 2739.070

2013 01 05 09 05 45 3 2739.042

2013 01 05 09 05 30 3 2739.079

Given that the water column height data is reported every 15 seconds (at least on sensor/monitor/channel 3), and given that the data surrounding the anomalous "spike" at 09:06:30 remains virtually unchanged, it is at least feasible, but more probably very likely, that the "spike" was an erroneous report, or something other kind of error.

Cz

Edited by Czero 101
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Actually, it was just under 14 meters... in the course of 15 seconds.

If you look at all the reported data you will see that there was a spike at one of the reporting intervals:

Given that the data water column height is reported every 15 seconds, and given that the data surrounding the anomalous "spike" at 09:06:30 remains virtually unchanged, it is at least feasible, but more probably very likely, that the "spike" was an erroneous report, or something other kind of error.

Cz

Thanks Czero, them data streams are not a strong point of mine in comprehending :tu:

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