Magnitude 7.6 - Kermadec Islands Region

[David]

There's just been a very large M 7.8 quake in the Kermadec Islands region.
http://earthquake.usgs.gov/earthquakes/ ... lnxe9i.php

Doesn't seem to be any tsunami alerts/warnings yet

[Manukau heads obs]

I was just looking at the volcano drum from the other link, and it had picked up that quake...

[03Stormchaser]

Just heard on the radio that a warning was issued, but cant confirm where they got this. Cant see it mentioned anywere

[David]

Some news sites reporting there is an NZ tsunami warning...

[David]

ah here we are:

000
WEPA40 PHEB 061912
TSUPAC

TSUNAMI BULLETIN NUMBER 001
PACIFIC TSUNAMI WARNING CENTER/NOAA/NWS
ISSUED AT 1912Z 06 JUL 2011

THIS BULLETIN APPLIES TO AREAS WITHIN AND BORDERING THE PACIFIC
OCEAN AND ADJACENT SEAS...EXCEPT ALASKA...BRITISH COLUMBIA...
WASHINGTON...OREGON AND CALIFORNIA.

... A TSUNAMI WARNING IS IN EFFECT ...

A TSUNAMI WARNING IS IN EFFECT FOR

KERMADEC IS / TONGA / NEW ZEALAND

FOR ALL OTHER AREAS COVERED BY THIS BULLETIN... IT IS FOR
INFORMATION ONLY AT THIS TIME.

THIS BULLETIN IS ISSUED AS ADVICE TO GOVERNMENT AGENCIES. ONLY
NATIONAL AND LOCAL GOVERNMENT AGENCIES HAVE THE AUTHORITY TO MAKE
DECISIONS REGARDING THE OFFICIAL STATE OF ALERT IN THEIR AREA AND
ANY ACTIONS TO BE TAKEN IN RESPONSE.

AN EARTHQUAKE HAS OCCURRED WITH THESE PRELIMINARY PARAMETERS

ORIGIN TIME - 1903Z 06 JUL 2011
COORDINATES - 29.4 SOUTH 175.7 WEST
DEPTH - 48 KM
LOCATION - KERMADEC ISLANDS REGION
MAGNITUDE - 7.8

EVALUATION

IT IS NOT KNOWN THAT A TSUNAMI WAS GENERATED. THIS WARNING IS
BASED ONLY ON THE EARTHQUAKE EVALUATION. AN EARTHQUAKE OF THIS
SIZE HAS THE POTENTIAL TO GENERATE A DESTRUCTIVE TSUNAMI THAT CAN
STRIKE COASTLINES IN THE REGION NEAR THE EPICENTER WITHIN MINUTES
TO HOURS. AUTHORITIES IN THE REGION SHOULD TAKE APPROPRIATE
ACTION IN RESPONSE TO THIS POSSIBILITY. THIS CENTER WILL MONITOR
SEA LEVEL GAUGES NEAREST THE REGION AND REPORT IF ANY TSUNAMI
WAVE ACTIVITY IS OBSERVED. THE WARNING WILL NOT EXPAND TO OTHER
AREAS OF THE PACIFIC UNLESS ADDITIONAL DATA ARE RECEIVED TO
WARRANT SUCH AN EXPANSION.

ESTIMATED INITIAL TSUNAMI WAVE ARRIVAL TIMES AT FORECAST POINTS
WITHIN THE WARNING AND WATCH AREAS ARE GIVEN BELOW. ACTUAL
ARRIVAL TIMES MAY DIFFER AND THE INITIAL WAVE MAY NOT BE THE
LARGEST. A TSUNAMI IS A SERIES OF WAVES AND THE TIME BETWEEN
SUCCESSIVE WAVES CAN BE FIVE MINUTES TO ONE HOUR.

LOCATION FORECAST POINT COORDINATES ARRIVAL TIME
-------------------------------- ------------ ------------
KERMADEC IS RAOUL_IS. 29.2S 182.1E 1929Z 06 JUL
TONGA NUKUALOFA 21.0S 184.8E 2017Z 06 JUL
NEW ZEALAND EAST_CAPE 37.7S 178.5E 2052Z 06 JUL
NORTH_CAPE 34.4S 173.3E 2054Z 06 JUL
GISBORNE 38.7S 178.0E 2059Z 06 JUL
AUCKLAND(E) 36.7S 175.0E 2200Z 06 JUL

BULLETINS WILL BE ISSUED HOURLY OR SOONER IF CONDITIONS WARRANT.
THE TSUNAMI WARNING WILL REMAIN IN EFFECT UNTIL FURTHER NOTICE.

THE WEST COAST/ALASKA TSUNAMI WARNING CENTER WILL ISSUE PRODUCTS
FOR ALASKA...BRITISH COLUMBIA...WASHINGTON...OREGON...CALIFORNIA.

[03Stormchaser]

Just got the email aswell! damn off to work, want to follow this cant call in sick when its your first week!

[jamie]

dam im super busy today so dont really have time to follow this.

I was doing the same as you brian.. i was looking at the okatina drum or whatever one is in that other topic and saw a very recent biggy!

[bmo]

Have to go to Orewa. 1m above sea level...

[David]

Latest warning says

SEA LEVEL READINGS CONFIRM THAT A TSUNAMI WAS GENERATED. THIS
TSUNAMI MAY HAVE BEEN DESTRUCTIVE ALONG COASTLINES OF THE REGION
NEAR THE EARTHQUAKE EPICENTER.

[Manukau heads obs]

nothing at
http://www.civildefence.govt.nz/
yet
should there be by now?

[Razor]

The was when I looked a couple of mins ago

[Manukau heads obs]

OK, its updated now....

[Manukau heads obs]

its now classified as a marine threat only
so similar to what we have had already from the recent Japan and Chile quakes

sure has been a busy couple of years for these things

[David]

Updated thread title to new magnitude (7.6)

[Manukau heads obs]

http://www.geonet.org.nz/tsunami/

[Manukau heads obs]

The gauge at north cape sure is dropping big time....looking bigger than we have had recently?
ok, bottomed out at 0.8m maybe drop in sea level?

[Manukau heads obs]

nothing recorded at east cape....so far...which was probably the tell tell for it all being cancelled (still though to take note of unusual currents/tides (heck the manukau has 0.5 m higher yesterday due to storm surge conditions)

[Nev]

Showed up well on the BoP Drum...

[bmo]

Another drop at North Cape

http://www.geonet.org.nz/images/volcano ... 0/drum.png
Sure looked like fun at Raoul Island

[Manukau heads obs]

I see Gt barrier island is getting some small changes in sea level

I suspect that North cape is also being affected by the storm conditons on the west coast

[Manukau heads obs]

the radio news reports 30cm surges through tutakaka marina....

[03Stormchaser]

Quite a not active event really, although I wonder how long it takes with events like this before people stop following warnings and a "bigger" tsunami hits.

[bmo]

I'm sure we'll see a big tsunami from the pacific hit NZ in the next 50 years and that some 'smart' people will be at the beach collecting driftwood or taking pictures.
http://www.hawkesbaytoday.co.nz/have-yo ... s/3958540/

[Nev]

Computed propagation of the July, 2011 Kermadec tsunami.

Also, Maximum Amplitudes Plot from NOAA Tsunami Research Centre. Note that orientation of the quake’s fault rupture was north-south, so most of the tsunami's energy was radiated west-east.