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8.0 Earthquake - Samoa Islands- Tsunami & 6.3 aftershock 2 days later

AlaskaDenise

AlaskaDenise

In Memoriam
Earthquake Details

Magnitude 7.9

Date-Time Tuesday, September 29, 2009 at 17:48:14 UTC
Tuesday, September 29, 2009 at 06:48:14 AM at epicenter


Location 15.554?S, 172.141?W
Depth 35 km (21.7 miles) set by location program

Region SAMOA ISLANDS REGION

Distances

180 km (110 miles) ENE of Hihifo, Tonga
200 km (125 miles) SSW of APIA, Samoa
700 km (435 miles) NNE of NUKU'ALOFA, Tonga
2685 km (1670 miles) NNE of Auckland, New Zealand

http://earthquake.usgs.gov/eqcenter/recenteqsww/Quakes/us2009mdbi.php#details
 
Re: 7.9 Earthquake - Samoa Islands Region

Re: 7.9 Earthquake - Samoa Islands Region

Tsunami warning for NZ

2009-09-29

Washington - A tsunami warning was issued for New Zealand and other small Pacific islands after a major 7.9 magnitude quake struck in the ocean off American Samoa, US government agencies said on Tuesday.

The Pacific Tsunami Warning Centre, a branch of the US National Oceanic and Atmospheric Administration, issued the warning after the quake hit about 190km southwest of the remote Pacific island of American Samoa. It struck at a depth of 33km.

A tsunami watch was in effect for Hawaii, Papua New Guinea and other small Pacific islands.

The agency noted that its warning did not mean a tsunami had necessarily been generated by the quake. The warning was issued because a quake of this magnitude had the power to generate a destructive tsunami, it said.

In 2004, a quake in the Indian Ocean generated a powerful tsunami that killed tens of thousands people in Asia.

http://www.news24.com/Content/World...535d1/29-09-2009 08-38/Tsunami_warning_for_NZ
 
Re: 7.9 Earthquake - Samoa Islands Region

Re: 7.9 Earthquake - Samoa Islands Region

TSUNAMI BULLETIN NUMBER 001
PACIFIC TSUNAMI WARNING CENTER/NOAA/NWS
ISSUED AT 1804Z 29 SEP 2009

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

AMERICAN SAMOA / SAMOA / NIUE / WALLIS-FUTUNA / TOKELAU /
COOK ISLANDS / TONGA / TUVALU / KIRIBATI / KERMADEC IS / FIJI /
HOWLAND-BAKER / JARVIS IS. / NEW ZEALAND / FR. POLYNESIA /
PALMYRA IS.

A TSUNAMI WATCH IS IN EFFECT FOR

VANUATU / NAURU / MARSHALL IS. / SOLOMON IS. / JOHNSTON IS. /
NEW CALEDONIA / KOSRAE / PAPUA NEW GUINEA / HAWAII / POHNPEI /
WAKE IS. / PITCAIRN / MIDWAY IS.

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 - 1748Z 29 SEP 2009
COORDINATES - 15.3 SOUTH 171.0 WEST
DEPTH - SHALLOWER THAN 100 KM
LOCATION - SAMOA ISLANDS REGION
MAGNITUDE - 7.9

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 NEAR THE EPICENTER WITHIN MINUTES AND MORE
DISTANT COASTLINES WITHIN HOURS. AUTHORITIES SHOULD TAKE
APPROPRIATE ACTION IN RESPONSE TO THIS POSSIBILITY. THIS CENTER
WILL MONITOR SEA LEVEL DATA FROM GAUGES NEAR THE EARTHQUAKE TO
DETERMINE IF A TSUNAMI WAS GENERATED AND ESTIMATE THE SEVERITY OF
THE THREAT.

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.

Code: 
LOCATION         FORECAST POINT     COORDINATES     ARRIVAL TIME
 --------------------------------    ------------    ------------
 AMERICAN SAMOA   PAGO PAGO          14.3S 170.7W    1759Z 29 SEP
 SAMOA            APIA               13.8S 171.8W    1810Z 29 SEP
 NIUE             NIUE IS.           19.0S 170.0W    1822Z 29 SEP
 WALLIS-FUTUNA    WALLIS IS.         13.2S 176.2W    1835Z 29 SEP
 TOKELAU          NUKUNONU IS.        9.2S 171.8W    1844Z 29 SEP
 COOK ISLANDS     PUKAPUKA IS.       10.8S 165.9W    1846Z 29 SEP
                  RAROTONGA          21.2S 159.8W    1929Z 29 SEP
                  PENRYN IS.          8.9S 157.8W    1954Z 29 SEP
 TONGA            NUKUALOFA          21.0S 175.2W    1851Z 29 SEP
 TUVALU           FUNAFUTI IS.        7.9S 178.5E    1932Z 29 SEP
 KIRIBATI         KANTON IS.          2.8S 171.7W    1935Z 29 SEP
                  FLINT IS.          11.4S 151.8W    2025Z 29 SEP
                  MALDEN IS.          3.9S 154.9W    2037Z 29 SEP
                  CHRISTMAS IS.       2.0N 157.5W    2100Z 29 SEP
                  TARAWA IS.          1.5N 173.0E    2104Z 29 SEP
 KERMADEC IS      RAOUL IS.          29.2S 177.9W    1938Z 29 SEP
 FIJI             SUVA               18.1S 178.4E    2003Z 29 SEP
 HOWLAND-BAKER    HOWLAND IS.         0.6N 176.6W    2008Z 29 SEP
 JARVIS IS.       JARVIS IS.          0.4S 160.1W    2028Z 29 SEP
 NEW ZEALAND      EAST CAPE          37.7S 178.5E    2044Z 29 SEP
                  GISBORNE           38.7S 178.0E    2100Z 29 SEP
                  NORTH CAPE         34.4S 173.3E    2112Z 29 SEP
                  NAPIER             39.5S 176.9E    2140Z 29 SEP
                  WELLINGTON         41.3S 174.8E    2150Z 29 SEP
                  AUCKLAND(E)        36.7S 175.0E    2212Z 29 SEP
                  AUCKLAND(W)        37.1S 174.2E    2239Z 29 SEP
                  LYTTELTON          43.6S 172.7E    2255Z 29 SEP
                  NEW PLYMOUTH       39.1S 174.1E    2317Z 29 SEP
                  NELSON             41.3S 173.3E    2323Z 29 SEP
                  DUNEDIN            45.9S 170.5E    2331Z 29 SEP
                  MILFORD SOUND      44.6S 167.9E    2358Z 29 SEP
                  WESTPORT           41.8S 171.6E    2359Z 29 SEP
 FR. POLYNESIA    PAPEETE            17.5S 149.6W    2045Z 29 SEP
                  HIVA OA            10.0S 139.0W    2214Z 29 SEP
                  RIKITEA            23.1S 135.0W    2247Z 29 SEP
 PALMYRA IS.      PALMYRA IS.         6.3N 162.4W    2102Z 29 SEP
 VANUATU          ANATOM IS.         20.2S 169.9E    2117Z 29 SEP
                  ESPERITU SANTO     15.1S 167.3E    2123Z 29 SEP
 NAURU            NAURU               0.5S 166.9E    2138Z 29 SEP
 MARSHALL IS.     MAJURO              7.1N 171.4E    2147Z 29 SEP
                  KWAJALEIN           8.7N 167.7E    2220Z 29 SEP
                  ENIWETOK           11.4N 162.3E    2309Z 29 SEP
 SOLOMON IS.      KIRAKIRA           10.4S 161.9E    2155Z 29 SEP
                  GHATERE             7.8S 159.2E    2227Z 29 SEP
                  AUKI                8.8S 160.6E    2244Z 29 SEP
                  HONIARA             9.3S 160.0E    2244Z 29 SEP
                  PANGGOE             6.9S 157.2E    2245Z 29 SEP
                  MUNDA               8.4S 157.2E    2248Z 29 SEP
                  FALAMAE             7.4S 155.6E    2304Z 29 SEP
 JOHNSTON IS.     JOHNSTON IS.       16.7N 169.5W    2212Z 29 SEP
 NEW CALEDONIA    NOUMEA             22.3S 166.5E    2216Z 29 SEP
 KOSRAE           KOSRAE IS.          5.5N 163.0E    2233Z 29 SEP
 PAPUA NEW GUINE  KIETA               6.1S 155.6E    2303Z 29 SEP
                  AMUN                6.0S 154.7E    2323Z 29 SEP
                  RABAUL              4.2S 152.3E    2349Z 29 SEP
 HAWAII           NAWILIWILI         22.0N 159.4W    2311Z 29 SEP
                  HILO               19.7N 155.1W    2314Z 29 SEP
                  HONOLULU           21.3N 157.9W    2315Z 29 SEP
 POHNPEI          POHNPEI IS.         7.0N 158.2E    2318Z 29 SEP
 WAKE IS.         WAKE IS.           19.3N 166.6E    2322Z 29 SEP
 PITCAIRN         PITCAIRN IS.       25.1S 130.1W    2329Z 29 SEP
 MIDWAY IS.       MIDWAY IS.         28.2N 177.4W    2349Z 29 SEP
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.

http://www.prh.noaa.gov/pr/ptwc/messages/pacific/2009/pacific.2009.09.29.180334.txt
 
Re: 7.9 Earthquake - Samoa Islands Region

Re: 7.9 Earthquake - Samoa Islands Region

Hawaii County Civil Defense is advising all residents to avoid shoreline areas due to the Tsunami Watch in effect for the Hawaiian Islands.

BULLETIN

TSUNAMI MES
WATCH SUPPLEMENT

A TSUNAMI WATCH CONTINUES IN EFFECT FOR THE STATE OF HAWAII.
AN EARTHQUAKE HAS OCCURRED WITH THESE PRELIMINARY PARAMETERS

NOTE MOMENT MAGNITUDE INCREASE TO 8.3
ORIGIN TIME – 0748 AM HST 29 SEP 2009
COORDINATES – 15.3 SOUTH 171.0 WEST
LOCATION – SAMOA ISLANDS REGION
MAGNITUDE – 8.3 MOMENT
MAGNITUDE – 8.0 RICHTER (MS)
MEASUREMENTS OR REPORTS OF TSUNAMI WAVE ACTIVITY
GAUGE LOCATION LAT LON TIME AMPL PER
——————- —– —— —– ————— —–
APIA UPOLU WS 13.8S 171.8W 1832Z 0.70M / 2.3FT 08MIN
PAGO PAGO AS 14.3S 170.7W 1812Z 1.57M / 5.1FT 04MIN
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.
EVALUATION
BASED ON ALL AVAILABLE DATA A TSUNAMI MAY HAVE BEEN GENERATED BY
THIS EARTHQUAKE THAT COULD BE DESTRUCTIVE ON COASTAL AREAS EVEN
FAR FROM THE EPICENTER. AN INVESTIGATION IS UNDERWAY TO DETERMINE
IF THERE IS A TSUNAMI THREAT TO HAWAII.
IF TSUNAMI WAVES IMPACT HAWAII THE ESTIMATED EARLIEST ARRIVAL OF
THE FIRST TSUNAMI WAVE IS
0111 PM HST TUE 29 SEP 2009
MESSAGES WILL BE ISSUED HOURLY OR SOONER AS CONDITIONS WARRANT.
Pacific Area Bulletin

TSUNAMI BULLETIN NUMBER 002
PACIFIC TSUNAMI WARNING CENTER/NOAA/NWS
ISSUED AT 1856Z 29 SEP 2009
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
AMERICAN SAMOA / SAMOA / NIUE / WALLIS-FUTUNA / TOKELAU /
COOK ISLANDS / TONGA / TUVALU / KIRIBATI / KERMADEC IS / FIJI /
HOWLAND-BAKER / JARVIS IS. / NEW ZEALAND / FR. POLYNESIA /
PALMYRA IS. / VANUATU / NAURU / MARSHALL IS. / SOLOMON IS.
A TSUNAMI WATCH IS IN EFFECT FOR
JOHNSTON IS. / NEW CALEDONIA / KOSRAE / PAPUA NEW GUINEA /
HAWAII / POHNPEI / WAKE IS. / PITCAIRN / MIDWAY IS. / CHUUK /
AUSTRALIA
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
NOTE THE MAGNITUDE UPGRADE TO 8.3
ORIGIN TIME – 1748Z 29 SEP 2009
COORDINATES – 15.3 SOUTH 171.0 WEST
DEPTH – 33 KM
LOCATION – SAMOA ISLANDS REGION
MAGNITUDE – 8.3
MEASUREMENTS OR REPORTS OF TSUNAMI WAVE ACTIVITY
GAUGE LOCATION LAT LON TIME AMPL PER
——————- —– —— —– ————— —–
APIA UPOLU WS 13.8S 171.8W 1832Z 0.70M / 2.3FT 08MIN
PAGO PAGO AS 14.3S 170.7W 1812Z 1.57M / 5.1FT 04MIN
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.
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
-------------------------------- ------------ ------------
AMERICAN SAMOA PAGO PAGO 14.3S 170.7W 1759Z 29 SEP
SAMOA APIA 13.8S 171.8W 1810Z 29 SEP
NIUE NIUE IS. 19.0S 170.0W 1822Z 29 SEP
WALLIS-FUTUNA WALLIS IS. 13.2S 176.2W 1835Z 29 SEP
TOKELAU NUKUNONU IS. 9.2S 171.8W 1844Z 29 SEP
COOK ISLANDS PUKAPUKA IS. 10.8S 165.9W 1846Z 29 SEP
RAROTONGA 21.2S 159.8W 1929Z 29 SEP
PENRYN IS. 8.9S 157.8W 1954Z 29 SEP
TONGA NUKUALOFA 21.0S 175.2W 1851Z 29 SEP
TUVALU FUNAFUTI IS. 7.9S 178.5E 1932Z 29 SEP
KIRIBATI KANTON IS. 2.8S 171.7W 1935Z 29 SEP
FLINT IS. 11.4S 151.8W 2025Z 29 SEP
MALDEN IS. 3.9S 154.9W 2037Z 29 SEP
CHRISTMAS IS. 2.0N 157.5W 2100Z 29 SEP
TARAWA IS. 1.5N 173.0E 2104Z 29 SEP
KERMADEC IS RAOUL IS. 29.2S 177.9W 1938Z 29 SEP
FIJI SUVA 18.1S 178.4E 2003Z 29 SEP
HOWLAND-BAKER HOWLAND IS. 0.6N 176.6W 2008Z 29 SEP
JARVIS IS. JARVIS IS. 0.4S 160.1W 2028Z 29 SEP
NEW ZEALAND EAST CAPE 37.7S 178.5E 2044Z 29 SEP
GISBORNE 38.7S 178.0E 2100Z 29 SEP
NORTH CAPE 34.4S 173.3E 2112Z 29 SEP
NAPIER 39.5S 176.9E 2140Z 29 SEP
WELLINGTON 41.3S 174.8E 2150Z 29 SEP
AUCKLAND(E) 36.7S 175.0E 2212Z 29 SEP
AUCKLAND(W) 37.1S 174.2E 2239Z 29 SEP
LYTTELTON 43.6S 172.7E 2255Z 29 SEP
NEW PLYMOUTH 39.1S 174.1E 2317Z 29 SEP
NELSON 41.3S 173.3E 2323Z 29 SEP
DUNEDIN 45.9S 170.5E 2331Z 29 SEP
MILFORD SOUND 44.6S 167.9E 2358Z 29 SEP
WESTPORT 41.8S 171.6E 2359Z 29 SEP
BLUFF 46.6S 168.3E 0044Z 30 SEP
FR. POLYNESIA PAPEETE 17.5S 149.6W 2045Z 29 SEP
HIVA OA 10.0S 139.0W 2214Z 29 SEP
RIKITEA 23.1S 135.0W 2247Z 29 SEP
PALMYRA IS. PALMYRA IS. 6.3N 162.4W 2102Z 29 SEP
VANUATU ANATOM IS. 20.2S 169.9E 2117Z 29 SEP
ESPERITU SANTO 15.1S 167.3E 2123Z 29 SEP
NAURU NAURU 0.5S 166.9E 2138Z 29 SEP
MARSHALL IS. MAJURO 7.1N 171.4E 2147Z 29 SEP
KWAJALEIN 8.7N 167.7E 2220Z 29 SEP
ENIWETOK 11.4N 162.3E 2309Z 29 SEP
SOLOMON IS. KIRAKIRA 10.4S 161.9E 2155Z 29 SEP
GHATERE 7.8S 159.2E 2227Z 29 SEP
AUKI 8.8S 160.6E 2244Z 29 SEP
HONIARA 9.3S 160.0E 2244Z 29 SEP
PANGGOE 6.9S 157.2E 2245Z 29 SEP
MUNDA 8.4S 157.2E 2248Z 29 SEP
FALAMAE 7.4S 155.6E 2304Z 29 SEP
JOHNSTON IS. JOHNSTON IS. 16.7N 169.5W 2212Z 29 SEP
NEW CALEDONIA NOUMEA 22.3S 166.5E 2216Z 29 SEP
KOSRAE KOSRAE IS. 5.5N 163.0E 2233Z 29 SEP
PAPUA NEW GUINE KIETA 6.1S 155.6E 2303Z 29 SEP
AMUN 6.0S 154.7E 2323Z 29 SEP
RABAUL 4.2S 152.3E 2349Z 29 SEP
LAE 6.8S 147.0E 0015Z 30 SEP
KAVIENG 2.5S 150.7E 0016Z 30 SEP
PORT MORESBY 9.3S 146.9E 0039Z 30 SEP
MADANG 5.2S 145.8E 0041Z 30 SEP
MANUS IS. 2.0S 147.5E 0050Z 30 SEP
HAWAII NAWILIWILI 22.0N 159.4W 2311Z 29 SEP
HILO 19.7N 155.1W 2314Z 29 SEP
HONOLULU 21.3N 157.9W 2315Z 29 SEP
POHNPEI POHNPEI IS. 7.0N 158.2E 2318Z 29 SEP
WAKE IS. WAKE IS. 19.3N 166.6E 2322Z 29 SEP
PITCAIRN PITCAIRN IS. 25.1S 130.1W 2329Z 29 SEP
MIDWAY IS. MIDWAY IS. 28.2N 177.4W 2349Z 29 SEP
CHUUK CHUUK IS. 7.4N 151.8E 0020Z 30 SEP
AUSTRALIA BRISBANE 27.2S 153.3E 0036Z 30 SEP
SYDNEY 33.9S 151.4E 0038Z 30 SEP
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.
 
Re: 7.9 Earthquake - Samoa Islands Region - Tsunami alert!

Re: 7.9 Earthquake - Samoa Islands Region - Tsunami alert!

Earthquake hits near Samoa, causes 10-foot tsunami

Posted: 02:24 PM ET

(CNN) ? An earthquake with a magnitude of 7.9 struck in the Samoan Islands region Tuesday afternoon, the U.S. Geological Survey said.

The temblor did generate a nearly 10-foot (3-meter) tsunami ? measured from crest to trough ? according to preliminary data, according to Chip McCreery, the Director of the Pacific Tsunami Warning Center in Ewa Beach, Hawaii.

Further details were not immediately available.

There were no immediate reports of damage.

The quake was recorded at about 6:48 a.m. (1:28 p.m. ET) at a depth of about 7.4 miles (11.9 km), the USGS reported.
?CNN?s Augie Martin contributed to this report.

http://cnnwire.blogs.cnn.com/2009/09/29/earthquake-hits-near-samoa/
 
Re: 7.9 Earthquake - Samoa Islands Region - Tsunami alert!

Re: 7.9 Earthquake - Samoa Islands Region - Tsunami alert!

Tsunami measuring 1.5m hits American Samoa

By Chris Whitworth and James Murray

The Pacific Tsunami Warning Centre has confirmed that a tsunami has struck American Samoa following an earthquake on Upolu Island.

Spokesperson Nathan Becker said the wave measured 1.5m, which is enough to be dangerous, and that a 0.7m wave struck Western Samoa.

Uncomfirmed reports radio reports suggest that two villages in Samoa have also been hit by a tsunami.

The villages affected are Siumu and Lotofago.

The 7.9 magnitude earthquake off American Samoa has also sparked a tsunami warning in New Zealand.

The Ministry Of Defence is working to assess the threat level in New Zealand

Other Islands in the vicinity such as Niue, Tonga and Fiji have also received warnings.

Breaking news reports on Twitter suggest that a strong aftershock has just been felt.

The US Geological Survey says the earth quake struck the region this morning.
The warning was an automated response, as a quake of that magnitude is known to generate a tsunami.

The quake struck at a depth of 33 km and was 190 km southwest of the remote Pacific Island.

The Ministry of Defence says earthquake scientists are working to assess if the quake poses an actual threat.

The MOD is expected to make a decision by 830am.

http://www.3news.co.nz/Tsunami-hits...abid/423/articleID/123334/cat/64/Default.aspx
 
Re: 8.0 Earthquake - Samoa Islands Region - Tsunami alert!

Re: 8.0 Earthquake - Samoa Islands Region - Tsunami alert!

Source: http://www.honoluluadvertiser.com/a...under+tsunami+watch+after+8.3+quake+off+Samoa

Updated at 9:16 a.m., Tuesday, September 29, 2009

Hawaii under tsunami watch after 8.3 quake off Samoa



Hawaii is under a tsunami watch following a magnitude-8.3 undersea earthquake near the Samoa islands.
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The Pacific Tsunami Warning Center said sea level readings indicate a tsunami was generated.

There was no immediate indication of how large the tsunami is and no reports of damage at nearby coasts.

The warning center said the quake — originally designated at magnitude-7.9 — hit at 7:48 a.m., Hawaii time.

The tsunami watch was declared at 8:05.

The quake was located 110 miles east-northeast of Hihifo, Tonga; 125 miles south-southwest of Apia, Samoa; 435 miles north-northeast of Nukualofa, Tonga; and 1,670 miles north-northeast of Auckland, New Zealand.

The warning center said quakes of this magnitude have the potential to power destructive tsunami that can strike nearby coasts within minutes.

If a tsunami is generated, the earliest expected time of arrival in Hawaii would be 1:11 p.m., the warning center said.

A tsunami warning is in effect for American Samoa, Samoa, Niue, Wallis-Futuna, Tokelau, Cook Islands, Tonga, Tuvalu, Kiribati, Kermadec Islands, Howland-Baker, Jarvis Island, New Zealand, French Polynesia and Palmyra Atoll.

Hawaii is listed as under a tsunami watch along with Vanuatu, Nauru, Marshall Islands, Solomon Islands, Johnston Atoll, New Caledonia, Kosrae, Papua New Guinea, Pohnpeo, Wake Island, Pitcairn Island and Midway.

This post will be updated as information is received
 
Re: 8.0 Earthquake - Samoa Islands Region - Tsunami alert!

Re: 8.0 Earthquake - Samoa Islands Region - Tsunami alert!

MAGNITUDE ? 8.3 MOMENT
MAGNITUDE ? 8.0 RICHTER (MS)

MEASUREMENTS OR REPORTS OF TSUNAMI WAVE ACTIVITY
GAUGE LOCATION LAT LON TIME AMPL PER
??????- ?? ?? ?? ????? ??
APIA UPOLU WS 13.8S 171.8W 1832Z 0.70M / 2.3FT 08MIN
PAGO PAGO AS 14.3S 170.7W 1812Z 1.57M / 5.1FT 04MIN
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.
Click to expand...

I changed the thread title to reflect this updated magnitude information.

Based on the wave heights, isn't it decreasing with time?

.
 
Re: 8.0 Earthquake - Samoa Islands Region - Tsunami alert!

Re: 8.0 Earthquake - Samoa Islands Region - Tsunami alert!

Tsunami Warning - Threat To New Zealand

Wednesday, 30 September, 2009 - 07:15

There is a tsunami risk to New Zealand from the 8.3 magnitude earthquake that occurred of the coast of the Samoan Islands Region today at 0648 hours NZDT.

The Ministry of Civil Defence & Emergency Management has issued a tsunami warning for New Zealand coasts.

Information from the Pacific Tsunami Warning Centre and GNS Science is that the earthquake is likely to have generated a tsunami.

The warning is for all of New Zealand.

The Ministry's Director, John Hamilton, said that the Ministry has alerted the country's regional Civil Defence Emergency Management (CDEM) Groups, Police, Fire Service, Ministry of Health, Department of Prime Minister and Cabinet and other government agencies, and media. The Ministry has activated the National Crisis Management Centre and is co-ordinating central government response.

The Civil Defence Emergency Management sector is activating its emergency plans. Regional Civil Defence Emergency Management Groups are working urgently with local authorities, local emergency services and local media to warn and if necessary evacuate coastal areas at risk.

Detailed evacuation advice will come from local authorities and local emergency services. People should act on it promptly. If told to evacuate they should, where possible, take a radio and cellular phone with them, along with items that are essential for them such as glasses, hearing aid and medicines.

GNS Science is convening the tsunami expert panel and all available New Zealand and international data about the earthquake and sea levels are being monitored and analysed.

The warning follows an earthquake at: Location: Samoa Islands Region Time & Date: 1748 Zulu 29 SEPTEMBER 2009 NZ Time: 0648 NZDT 30 SEPTEMBER 2009 Co-ordinates: 15.3 South 171.0 West Depth: 33 km Magnitude: 8.3 (Is provisional and may be adjusted)

The Ministry will release further information as soon as it becomes available.

http://www.voxy.co.nz/national/tsunami-warning-threat-new-zealand/5/25607
 
Re: 8.0 Earthquake - Samoa Islands Region - Tsunami alert!

Re: 8.0 Earthquake - Samoa Islands Region - Tsunami alert!

Thanks to one and all on this tsunami warning ). I live close to the sea, about 2 m above sea level, and last night had a tsunami dream wow....so we're down here watching for tsunamis in about 2-3 hours and I live near the beach, so it will be a most interesting/nerve-wracking day...heading for the beach to walk the dog now, so will be a little jittery hehe.
If I hear it's hit East Cape /North Island hard, then I'll still have an hour to move to higher ground. Good luck to one and all in the tsunami-potentiated region.
 
Re: 8.0 Earthquake - Samoa Islands Region - Tsunami alert!

Re: 8.0 Earthquake - Samoa Islands Region - Tsunami alert!

Tsunami hits American Samoa: Warnings issued to Pacific


UPDATED AT 8:23AM Wed, 30 Sep 2009 7:23a.m.

By Chris Whitworth, James Murray and Hannah Sarney

The Pacific Tsunami Warning Centre has confirmed that a tsunami has struck American Samoa following an earthquake on Upolu Island.

The wave measured 1.5m – large enough to be considered dangerous - and a 0.7m wave struck Western Samoa according to spokesperson Nathan Becker.

Mass casualties in the south-east villages have been reported to 3 News by Fire Commissioner Tony Hill. Emergency teams have been sent to the area.

Unconfirmed radio reports suggest that two villages in Samoa have also been hit by a tsunami. The villages affected are Siumu and Lotofago.

http://www.3news.co.nz/Tsunami-hits...abid/417/articleID/123334/cat/64/Default.aspx
 
Re: 8.0 Earthquake - Samoa Islands Region - Tsunami alert!

Re: 8.0 Earthquake - Samoa Islands Region - Tsunami alert!

Roehl_JC said:
Thanks to one and all on this tsunami warning ). I live close to the sea, about 2 m above sea level, and last night had a tsunami dream wow....so we're down here watching for tsunamis in about 2-3 hours and I live near the beach, so it will be a most interesting/nerve-wracking day...heading for the beach to walk the dog now, so will be a little jittery hehe.
If I hear it's hit East Cape /North Island hard, then I'll still have an hour to move to higher ground. Good luck to one and all in the tsunami-potentiated region.
Click to expand...

JC this contains the tsunami action plan for your area.
http://www.ccc.govt.nz/CDEM/Hazards/CCCTsunamiBrochure.pdf
 
Re: 8.0 Earthquake - Samoa Islands Region - Tsunami alert!

Re: 8.0 Earthquake - Samoa Islands Region - Tsunami alert!

The tsunami generated in the Pacific is predicted to hit New Zealand's East Cape at 9.44am and will be approximiately one metre high.

Samoan reports say the wave that hit in Apia was 0.7 of a metre while the second, larger wave in Pago Pago was measured at 1.7 metres.

Most low lying coastal areas of Apia have been affected with damage to many homes but there are no reports of deaths or injuries at this time.

Sea level readings indicated a tsunami was generated in the Pacific and Warwick Smith, senior seismologist at GNS, told Breakfast that if there is a tsunami, it will hit the East Cape first at 9.44am.

It would then hit Gisborne at 10.00am, Napier at 10.40am, Wellington at 10.50am and Auckland at 11.12am.

Civil Defence says the tsunami is expected to reach New Zealand but will only be around a metre high.
http://tvnz.co.nz/national-news/tsunami-expected-hit-new-zealand-3040019
 
Re: 8.0 Earthquake - Samoa Islands Region - Tsunami alert!

Re: 8.0 Earthquake - Samoa Islands Region - Tsunami alert!

A witness told Radio New Zealand that villages on the south-east coast of Samoa's Upolu had been flattened by the earthquake and that police were moving people to higher ground. It also said that a 10 foot (3 meter) tsunami struck its coast, a spokeswoman for the Pacific Tsunami Warning Center was not immediately able to confirm that.

http://news.bnonews.com/upti

and

Twitter:

CNN: Tsunami in Samoa had a height of 23 foot; Reuters reports unknown number of fatalities in American Samoa.
 
Re: 8.0 Earthquake - Samoa Islands Region - Tsunami alert!

Re: 8.0 Earthquake - Samoa Islands Region - Tsunami alert!

from post #14...

It would then hit Gisborne at 10.00am, Napier at 10.40am, Wellington at 10.50am and Auckland at 11.12am.

Civil Defence says the tsunami is expected to reach New Zealand but will only be around a metre high.
Click to expand...

That should bring out the spectators.

I hope everyone stays safe.

.
 
Re: 8.0 Earthquake - Samoa Islands Region - Tsunami alert!

Re: 8.0 Earthquake - Samoa Islands Region - Tsunami alert!

UPDATE 1-8.0 magnitude quake generates tsunami off Samoa islands

Wed Sep 30, 2009 1:06am IST Email | Print | Share | Single Page [-] Text [+]

WASHINGTON, Sept. 29 (Reuters) - A powerful 8.0 magnitude earthquake in the Pacific off the Samoa islands region generated a tsunami, U.S. government agencies said on Tuesday.

Sea level readings indicated a tsunami was generated, the Pacific Tsunami Warning Center, a branch of the U.S. National Oceanic and Atmospheric Administration, said.

The agency earlier issued a tsunami warning for New Zealand, American Samoa and other small Pacific islands.

The West Coast/Alaska Tsunami Warning Center said that a tsunami had been observed at Apia, Western Samoa, and at Pago Pago, American Samoa. The waves at Pago Pago were 5.1 feet (1.57 metres) above normal sea level.

In Western Samoa, some residents told Radio New Zealand they had felt a big jolt and were recommended by authorities to move to higher ground.

An official from American Samoa told Fox television he had felt shaking for up to five minutes.

Police in Tonga said they had not received any word of the quake or tsunami warning yet.

The epicenter of the quake was located 120 miles (190 km) southwest of American Samoa, a remote Pacific island, the U.S. Geological Survey. The USGS earlier said the quake measured 7.9 magnitude. It struck at a depth of 11.2 miles (18 km).

"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," the Pacific warning center said. (Reporting by Stacey Joyce, editing by Frances Kerry)

http://in.reuters.com/article/marketsNewsUS/idINN2916198620090929
 
Re: 8.0 Earthquake - Samoa Islands Region - Tsunami alert!

Re: 8.0 Earthquake - Samoa Islands Region - Tsunami alert!

Dutchy said:
A witness told Radio New Zealand that villages on the south-east coast of Samoa's Upolu had been flattened by the earthquake and that police were moving people to higher ground. It also said that a 10 foot (3 meter) tsunami struck its coast, a spokeswoman for the Pacific Tsunami Warning Center was not immediately able to confirm that.

http://news.bnonews.com/upti

and

Twitter:

CNN: Tsunami in Samoa had a height of 23 foot; Reuters reports unknown number of fatalities in American Samoa.
Click to expand...

Many tsunami monitoring points consist of measured poles, so these reports should be confried by those measurements.

.
 
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