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Sever Earthquake off NI East coast and Tsunami Warning


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 7.1 magnitude (maybe 7.2 - 7.3)
2.27 AM
Centred 100km east of Te Araroa off the coast of New Zealand, at a depth of 94km.
Tsunami warning issued.

The East Coast of the North Island from CAPE RUNAWAY to TOLAGA BAY.
Strong and unusual currents and unpredictable surges near the shore are expected in the following areas. This means a threat to beach, harbour, estuary and small boat activities.

The East Coast of the North Island from PORT CHARLES to CAPE RUNAWAY including Tauranga, Whakatane and Opotiki.
And from TOLAGA BAY to MAHIA, including Gisborne. As well as GREAT BARRIER ISLAND, and the CHATHAM ISLANDS.
 
The first waves were expected to reach New Zealand in the areas around East Cape about 3:14 am.
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I really am getting sick of all these alarms, alerts, warnings, severe warnings.

Can't I just have my breakfast without worrying about the sky falling on my head?

Yesterday we had a 'severe thunder storm warning'. We had some good thunder, but I couldn't understand why it wasn't just a warning of thunder storms, rather than 'severe'.

At least they didn't set the car alarm noise off on my phone this time, like on last Saturday night, when I was trying to chill out with the missus and watch a movie.

We're still at L3, and that haven't had a damn single case of community transmission. Planning on what to do this weekend, can't take the kids sailing (yet), maybe I'll go windsurfing, no- threat of death in near shore water activities, f*ck. Can't watch the America's cup...

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Stuff have posted thier news story that makes it sound like many on the East Coast need to evacuate. I think they have simply cut and pasted the warning advisory, if one experiances a shake in which they cannot stand up in. It's worded/put together poorly I feel and could make some panic reading it the way written.

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I would complain about Stuff click-baiting, but I can't keep up, now there is a Mag 8, and everyone is being told to run to the hills? I need a cup of tea....

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8.1 and only 19K deep.
Does anyone live on Kermadecs?

Evacuation has been called for everyone along the East Coast from BOI down to Whakatane.

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20 minutes ago, lateral said:

I’m happy to go sailing on L3 with tsunami concession.

That is the best idea I've heard all morning :-)

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1 hour ago, Black Panther said:

Scientists,  you know - those evil people trying to take over world government. And some DoC rangers.

Are you on the boat? Touched the bottom yet?

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Hey eruptn, just to help understand what I'm/we're looking at a bit better -

No 1 - Is that from the 1st rattle at 2:30am +/- or something else? If from the 1st shack why only East cape do you think, I'd have expected Northland and Barrier to have twitched as well.

No 2 - Below those are the signs you mention as now arriving? On the Barrier one the wiggle goes left a far bit, would that be smaller waves arriving from the 1st rattle?

No 3 - Those spikes would be due to the quake. The grey either side of that, and can be seen on others, is that just your average day to day bigger waves that inhabit oceans?

No number - why does Dunedin look so boring, don't they get any waves at all or do they only get reeeaaaallllll long ones :)

Charleston measurement device can see full on open ocean and the wiggles are just big ocean waves kicked up by the wind etc?

detide.png.a3915e149066e1c25e14ef3e1321b5b2.png

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5 minutes ago, DrWatson said:

Are you on the boat? Touched the bottom yet?

We were on board all morning.  Now visiting daughter. Zero to report.  The only concession I made was to cancel plan to scrub the bottom. 

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Hi KM

No 1 - Is that from the 1st rattle at 2:30am +/- or something else? If from the 1st shack why only East cape do you think, I'd have expected Northland and Barrier to have twitched as well.

Most of that is actually the ground going up and down with the quake, hence appearing as water level changes. Note the high frequency

No 2 - Below those are the signs you mention as now arriving? On the Barrier one the wiggle goes left a far bit, would that be smaller waves arriving from the 1st rattle?

Yes that's the long period signals starting to arrive about 40 cm  

No 3 - Those spikes would be due to the quake. The grey either side of that, and can be seen on others, is that just your average day to day bigger waves that inhabit oceans?

That is the aftershock, the high freq stuff. The light grey is the swells, the black is filtered to get rid of the higher freq swell signals

 

Hope that helps.

Looks like some serious low amplitude coastal surging ahead. 30-40cm tidal rise and fall over maybe an hour.

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Hey Mr Eruptn, how come the whole of NZ including Stewart Is is on alert for strong surges, but not the coast around Chch and Timaru?

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13 minutes ago, Fish said:

Hey Mr Eruptn, how come the whole of NZ including Stewart Is is on alert for strong surges, but not the coast around Chch and Timaru?

That will be a result of the bathymetry and physics of the calcs used. Note its less than 30 cm, not no surge.

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