Santa cruz Tsunami 6/2/2013

[ngatimozart]

There has been an 8 Magnitude quake in the Sanata Cruz Islands occurring at 0112Z 6 Feb 2013. Z = Zulu time = GMT / UTC. NZDT = Z + 13. The USGS and media state the quake depth as 5.8km but the PTWC (Pacific Tsunami Warning Center) place the depth at 33km. The PTWC depth would be closer to the truth. This is important because if the quake depth was 5.8km then a very large tsunami may be generated because the energy impulse would be significantly larger. A tsunami has been generated and so far the greatest wave amplitude is 0.91m. However it is early days and how NZ and Australia will be affected depends upon the direction of the initial displacement. So far the PTWC has issued four advisories and the fourth moved NZ and Australia from the watch category to the warning category. This is a copy of Advisory Number 4

000WEPA40 PHEB 060252
TSUPAC

TSUNAMI BULLETIN NUMBER 004
PACIFIC TSUNAMI WARNING CENTER/NOAA/NWS
ISSUED AT 0252Z 06 FEB 2013

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 AND WATCH ARE IN EFFECT ...

A TSUNAMI WARNING IS IN EFFECT FOR

SOLOMON ISLANDS / VANUATU / NAURU / PAPUA NEW GUINEA / TUVALU /
NEW CALEDONIA / KOSRAE / FIJI / KIRIBATI / WALLIS AND FUTUNA /
MARSHALL ISLANDS / HOWLAND AND BAKER / POHNPEI / TOKELAU /
SAMOA / KERMADEC ISLANDS / NEW ZEALAND / AMERICAN SAMOA /
TONGA / AUSTRALIA / NIUE / COOK ISLANDS / INDONESIA /
WAKE ISLAND

A TSUNAMI WATCH IS IN EFFECT FOR
MARSHALL ISLANDS / HOWLAND AND BAKER / POHNPEI / TOKELAU /
SAMOA / KERMADEC ISLANDS / NEW ZEALAND / AMERICAN SAMOA /
TONGA / AUSTRALIA / NIUE / COOK ISLANDS / INDONESIA /
WAKE ISLAND / CHUUK / JARVIS ISLAND / GUAM / NORTHERN MARIANAS /
PALMYRA ISLAND / YAP / JOHNSTON ISLAND / MINAMITORISHIMA /
BELAU

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 - 0112Z 06 FEB 2013
COORDINATES - 10.9 SOUTH 165.1 EAST
DEPTH - 33 KM
LOCATION - SANTA CRUZ ISLANDS
MAGNITUDE - 8.0

MEASUREMENTS OR REPORTS OF TSUNAMI WAVE ACTIVITY

GAUGE LOCATION LAT LON TIME AMPL PER
------------------- ----- ------ ----- --------------- -----
DART 52406 5.3S 165.1E 0206Z 0.04M / 0.1FT 10MIN
DART 55012 15.8S 158.5E 0237Z 0.17M / 0.6FT 06MIN
LATA WHARF SB 10.7S 165.8E 0129Z 0.91M / 3.0FT 18MIN

LAT - LATITUDE (N-NORTH, S-SOUTH)
LON - LONGITUDE (E-EAST, W-WEST)
TIME - TIME OF THE MEASUREMENT (Z IS UTC IS GREENWICH TIME)
AMPL - TSUNAMI AMPLITUDE MEASURED RELATIVE TO NORMAL SEA LEVEL.
IT IS ...NOT... CREST-TO-TROUGH WAVE HEIGHT.
VALUES ARE GIVEN IN BOTH METERS(M) AND FEET(FT).
PER - PERIOD OF TIME IN MINUTES(MIN) FROM ONE WAVE TO THE NEXT.

NOTE - DART MEASUREMENTS ARE FROM THE DEEP OCEAN AND THEY
ARE GENERALLY MUCH SMALLER THAN WOULD BE COASTAL
MEASUREMENTS AT SIMILAR LOCATIONS.

EVALUATION

SEA LEVEL READINGS INDICATE A TSUNAMI WAS GENERATED. IT MAY HAVE
BEEN DESTRUCTIVE ALONG COASTS NEAR THE EARTHQUAKE EPICENTER AND
COULD ALSO BE A THREAT TO MORE DISTANT COASTS. AUTHORITIES SHOULD
TAKE APPROPRIATE ACTION IN RESPONSE TO THIS POSSIBILITY. THIS
CENTER WILL CONTINUE TO MONITOR SEA LEVEL DATA TO DETERMINE THE
EXTENT AND SEVERITY OF THE THREAT.

FOR ALL AREAS - WHEN NO MAJOR WAVES ARE OBSERVED FOR TWO HOURS
AFTER THE ESTIMATED TIME OF ARRIVAL OR DAMAGING WAVES HAVE NOT
OCCURRED FOR AT LEAST TWO HOURS THEN LOCAL AUTHORITIES CAN ASSUME
THE THREAT IS PASSED. DANGER TO BOATS AND COASTAL STRUCTURES CAN
CONTINUE FOR SEVERAL HOURS DUE TO RAPID CURRENTS. AS LOCAL
CONDITIONS CAN CAUSE A WIDE VARIATION IN TSUNAMI WAVE ACTION THE
ALL CLEAR DETERMINATION MUST BE MADE BY LOCAL AUTHORITIES.

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
-------------------------------- ------------ ------------
SOLOMON ISLANDS KIRAKIRA 10.4S 161.9E 0145Z 06 FEB
AUKI 8.8S 160.6E 0216Z 06 FEB
HONIARA 9.3S 160.0E 0222Z 06 FEB
GHATERE 7.8S 159.2E 0227Z 06 FEB
MUNDA 8.4S 157.2E 0233Z 06 FEB
PANGGOE 6.9S 157.2E 0245Z 06 FEB
FALAMAE 7.4S 155.6E 0253Z 06 FEB
VANUATU ESPERITU_SANTO 15.1S 167.3E 0158Z 06 FEB
ANATOM_ISLAND 20.2S 169.9E 0254Z 06 FEB
NAURU NAURU 0.5S 166.9E 0300Z 06 FEB
PAPUA NEW GUINE KIETA 6.1S 155.6E 0304Z 06 FEB
AMUN 6.0S 154.7E 0306Z 06 FEB
RABAUL 4.2S 152.3E 0330Z 06 FEB
LAE 6.8S 147.0E 0402Z 06 FEB
KAVIENG 2.5S 150.7E 0406Z 06 FEB
PORT_MORESBY 9.3S 146.9E 0426Z 06 FEB
MADANG 5.2S 145.8E 0428Z 06 FEB
MANUS_ISLAND 2.0S 147.5E 0445Z 06 FEB
WEWAK 3.5S 143.6E 0509Z 06 FEB
VANIMO 2.6S 141.3E 0530Z 06 FEB
TUVALU FUNAFUTI_ISLAND 7.9S 178.5E 0322Z 06 FEB
NEW CALEDONIA NOUMEA 22.3S 166.5E 0339Z 06 FEB
KOSRAE KOSRAE_ISLAND 5.5N 163.0E 0354Z 06 FEB
FIJI SUVA 18.1S 178.4E 0405Z 06 FEB
KIRIBATI TARAWA_ISLAND 1.5N 173.0E 0406Z 06 FEB
KANTON_ISLAND 2.8S 188.3E 0446Z 06 FEB
CHRISTMAS_ISLAN 2.0N 202.5E 0650Z 06 FEB
MALDEN_ISLAND 3.9S 205.1E 0700Z 06 FEB
FLINT_ISLAND 11.4S 208.2E 0732Z 06 FEB
WALLIS AND FUTU FUTUNA_ISLAND 14.3S 181.8E 0414Z 06 FEB
WALLIS_ISLAND 13.3S 183.8E 0422Z 06 FEB
MARSHALL ISLAND KWAJALEIN 8.7N 167.7E 0420Z 06 FEB
MAJURO 7.1N 171.4E 0424Z 06 FEB
ENIWETOK 11.4N 162.3E 0457Z 06 FEB
HOWLAND AND BAK HOWLAND_ISLAND 0.6N 183.4E 0424Z 06 FEB
POHNPEI POHNPEI_ISLAND 7.0N 158.2E 0438Z 06 FEB
TOKELAU NUKUNONU_ISLAND 9.2S 188.2E 0440Z 06 FEB
SAMOA APIA 13.8S 188.2E 0458Z 06 FEB
KERMADEC ISLAND RAOUL_ISLAND 29.2S 182.1E 0504Z 06 FEB
NEW ZEALAND NORTH_CAPE 34.4S 173.3E 0505Z 06 FEB
AUCKLAND_WEST 37.1S 174.2E 0606Z 06 FEB
EAST_CAPE 37.7S 178.5E 0615Z 06 FEB
GISBORNE 38.7S 178.0E 0639Z 06 FEB
AUCKLAND_EAST 36.7S 175.0E 0647Z 06 FEB
NEW_PLYMOUTH 39.1S 174.1E 0651Z 06 FEB
WELLINGTON 41.3S 174.8E 0703Z 06 FEB
MILFORD_SOUND 44.6S 167.9E 0720Z 06 FEB
NAPIER 39.5S 176.9E 0727Z 06 FEB
WESTPORT 41.8S 171.6E 0730Z 06 FEB
DUNEDIN 45.9S 170.5E 0839Z 06 FEB
AMERICAN SAMOA PAGO_PAGO 14.3S 189.3E 0506Z 06 FEB
TONGA NUKUALOFA 21.0S 184.8E 0514Z 06 FEB
AUSTRALIA BRISBANE 27.2S 153.3E 0515Z 06 FEB
CAIRNS 16.7S 145.8E 0520Z 06 FEB
SYDNEY 33.9S 151.4E 0546Z 06 FEB
GLADSTONE 23.8S 151.4E 0625Z 06 FEB
HOBART 43.3S 147.6E 0721Z 06 FEB
MACKAY 21.1S 149.3E 0741Z 06 FEB
NIUE NIUE_ISLAND 19.0S 190.0E 0531Z 06 FEB
COOK ISLANDS PUKAPUKA_ISLAND 10.8S 194.1E 0533Z 06 FEB
PENRYN_ISLAND 8.9S 202.2E 0641Z 06 FEB
RAROTONGA 21.2S 200.2E 0647Z 06 FEB
INDONESIA JAYAPURA 2.4S 140.8E 0537Z 06 FEB
WARSA 0.6S 135.8E 0622Z 06 FEB
MANOKWARI 0.8S 134.2E 0641Z 06 FEB
SORONG 0.8S 131.1E 0710Z 06 FEB
BEREBERE 2.5N 128.7E 0730Z 06 FEB
PATANI 0.4N 128.8E 0739Z 06 FEB
GEME 4.6N 126.8E 0750Z 06 FEB
WAKE ISLAND WAKE_ISLAND 19.3N 166.6E 0547Z 06 FEB
CHUUK CHUUK_ISLAND 7.4N 151.8E 0555Z 06 FEB
JARVIS ISLAND JARVIS_ISLAND 0.4S 199.9E 0621Z 06 FEB
GUAM GUAM 13.4N 144.7E 0622Z 06 FEB
NORTHERN MARIAN SAIPAN 15.3N 145.8E 0626Z 06 FEB
PALMYRA ISLAND PALMYRA_ISLAND 6.3N 197.6E 0628Z 06 FEB
YAP YAP_ISLAND 9.5N 138.1E 0635Z 06 FEB
JOHNSTON ISLAND JOHNSTON_ISLAND 16.7N 190.5E 0637Z 06 FEB
MINAMITORISHIMA MINAMITORISHIMA 24.3N 154.0E 0640Z 06 FEB
BELAU MALAKAL 7.3N 134.5E 0658Z 06 FEB

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

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

Other import sites: NZ Ministry of Civil Defence Australia: Bureau of Meteorology - Tsunami Warnings
Follow the advice given by the NZ or Australian sites. If it does come this way don't go down to the beach to watch it come in. Go to high ground or if you can't the 2nd story or higher in a building.

[beagle]

just went next door and stole the little girls water wing arm floats and an inflatable Dora the Explorer ring just in case

[ngatimozart]

Don't forget to take the whiskey bottle as well. The warning and watch has been cancelled because the wave didn't achieve a dangerous height. Bit there could be tidal variations. The last one we had in Lyttelton was 1.9m but it was inside the tidal envelope (low tide 0.7m and high tide 2.3m). That was Feb 2010 after a South American quake. The harbour swashed and slopped for two days after it.

[Bruce]

Geonet has continuous Tsunami sea level data:
geonet.org.nz/tsunami/
not noticing anything unusual yet - Surely we'd see something from Raoul Island or North cape by now?....

[beagle]

why did people look at me funny while getting extra supplies wearing these water wings at the local New World before heading for the hills

[ngatimozart]

Not necessarily. Yes that first wave may have arrived but if it is a 1m wave then it can be hidden in the background wave environment. Unless it is a large one is hard to differentiate them from the wind waves tides etc. I know a guy who did it and he has a doctorate in geological physics and did this type of work for a living for many years. To many variables you have to factor in, such as the wave climate at the time: ambient water level, wind generated waves, tide level, is a seiche existing, air pressure, ambient wave periods etc. Given previous tsunami events in NZ the effects of this one could last for up to two days.

[ngatimozart]

Feb 6, 2013 17:19:49 GMT 12 beagle said:

why did people look at me funny while getting extra supplies wearing these water wings at the local New World before heading for the hills

coz you're a funny looking guy ;D ;D

[Dave Homewood]

Right now at 6.50pm TV3 is still issuing warnings for the West Coast from New Plymouth to Hokitika and say a 90cm wave may hit.

Beagle, hilarious mate!

[Dave Homewood]

Where is Santa Cruz? California?

Was anyone hurt?

[beagle]

solomon islands dave

looks like everything is going to be ok, but i have lots of food etc here. big forum party my place

[Dave Homewood]

Aha, that Santa Cruz. Cheers.

[701driver]

Feb 6, 2013 17:51:28 GMT 12 Dave Homewood said:

Right now at 6.50pm TV3 is still issuing warnings for the West Coast from New Plymouth to Hokitika and say a 90cm wave may hit.

Beagle, hilarious mate!

Ha Ha - a 90 cm wave on the west coast, would you even notice! guess i'll just have to put the surfboard away again....Bugger

[beagle]

just a gentle breaker for them. might bring in some fish though

[shamus]

I've just got in some essential supplies. 2 cases of Sauvignon Blanc and a bottle of rum for when they run out.

[ngatimozart]

That bottle of rum Jim is it Squirt? If it is I'm you new bestest mate ;D ;D ;D

[shamus]

Sorry Paul, its Bunderberg picked up duty-free so i'll have to drink it myself then.

[ngatimozart]

Fair enough.