Sumatra 8.6 Quake

[Crostorm]

AN EARTHQUAKE HAS OCCURRED WITH THESE PRELIMINARY PARAMETERS

ORIGIN TIME - 0839Z 11 APR 2012
COORDINATES - 2.0 NORTH 92.5 EAST
LOCATION - OFF W COAST OF NORTHERN SUMATRA
MAGNITUDE - 8.7

[Crostorm]

000
WEIO21 PHEB 110845
TSUIOX

TSUNAMI BULLETIN NUMBER 001
PACIFIC TSUNAMI WARNING CENTER/NOAA/NWS
ISSUED AT 0845Z 11 APR 2012

THIS BULLETIN IS FOR ALL AREAS OF THE INDIAN OCEAN.

... AN INDIAN-OCEAN-WIDE TSUNAMI WATCH IS IN EFFECT ...

A TSUNAMI WATCH IS IN EFFECT FOR

INDONESIA / INDIA / SRI LANKA / AUSTRALIA / MYANMAR / THAILAND /
MALDIVES / UNITED KINGDOM / MALAYSIA / MAURITIUS / REUNION /
SEYCHELLES / PAKISTAN / SOMALIA / OMAN / MADAGASCAR / IRAN /
UAE / YEMEN / COMORES / BANGLADESH / TANZANIA / MOZAMBIQUE /
KENYA / CROZET ISLANDS / KERGUELEN ISLANDS / SOUTH AFRICA /
SINGAPORE

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 - 0839Z 11 APR 2012
COORDINATES - 2.0 NORTH 92.5 EAST
LOCATION - OFF W COAST OF NORTHERN SUMATRA
MAGNITUDE - 8.7

EVALUATION

EARTHQUAKES OF THIS SIZE HAVE THE POTENTIAL TO GENERATE A
WIDESPREAD DESTRUCTIVE TSUNAMI THAT CAN AFFECT COASTLINES ACROSS
THE ENTIRE INDIAN OCEAN BASIN.

HOWEVER - IT IS NOT KNOWN THAT A TSUNAMI WAS GENERATED. THIS
WATCH IS BASED ONLY ON THE EARTHQUAKE EVALUATION. AUTHORITIES IN
THE REGION SHOULD TAKE APPROPRIATE ACTION IN RESPONSE TO THE
POSSIBILITY OF A WIDESPREAD DESTRUCTIVE TSUNAMI.

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
-------------------------------- ------------ ------------
INDONESIA SIMEULUE 2.5N 96.0E 0921Z 11 APR
BANDA_ACEH 5.5N 95.1E 0931Z 11 APR
SIBERUT 1.5S 98.7E 0941Z 11 APR
PADANG 0.9S 100.1E 1017Z 11 APR
BENGKULU 3.9S 102.0E 1038Z 11 APR
CILACAP 7.8S 108.9E 1205Z 11 APR
BANDAR_LAMPUNG 5.7S 105.3E 1213Z 11 APR
BALI 8.7S 115.3E 1253Z 11 APR
KUPANG 10.0S 123.4E 1338Z 11 APR
BELAWAN 3.8N 98.8E 1348Z 11 APR
BALI 8.7S 115.3E 1253Z 11 APR
INDIA GREAT_NICOBAR 7.1N 93.6E 0937Z 11 APR
LITTLE_ANDAMAN 10.7N 92.3E 1016Z 11 APR
PORT_BLAIR 11.9N 92.7E 1032Z 11 APR
NORTH_ANDAMAN 13.3N 92.6E 1052Z 11 APR
CHENNAI 13.4N 80.4E 1127Z 11 APR
KAKINADA 17.2N 82.7E 1205Z 11 APR
TRIVANDRUM 8.3N 76.9E 1208Z 11 APR
MANGALORE 13.3N 74.4E 1336Z 11 APR
BOMBAY 18.8N 72.6E 1608Z 11 APR
GULF_OF_KUTCH 22.7N 68.9E 1634Z 11 APR
SRI LANKA DONDRA_HEAD 5.9N 80.6E 1039Z 11 APR
TRINCOMALEE 8.7N 81.3E 1051Z 11 APR
COLOMBO 6.9N 79.8E 1120Z 11 APR
JAFFNA 9.9N 80.0E 1231Z 11 APR
AUSTRALIA COCOS_ISLAND 12.1S 96.7E 1045Z 11 APR
NORTH_WEST_CAPE 21.5S 113.9E 1314Z 11 APR
CAPE_INSPIRATIO 25.9S 113.0E 1413Z 11 APR
PERTH 32.0S 115.3E 1420Z 11 APR
AUGUSTA 34.3S 114.7E 1440Z 11 APR
GERALDTOWN 28.6S 114.3E 1459Z 11 APR
CAPE_LEVEQUE 16.1S 122.6E 1506Z 11 APR
ESPERANCE 34.0S 121.8E 1615Z 11 APR
KINGSTON_SOUTH_ 37.0S 139.4E 1748Z 11 APR
HEARD_ISLAND 54.0S 73.5E 1802Z 11 APR
EUCLA_MOTEL 31.8S 128.9E 1836Z 11 APR
HOBART 43.3S 147.6E 1901Z 11 APR
DARWIN 12.1S 130.7E 1935Z 11 APR
MYANMAR CHEDUBA_ISLAND 18.9N 93.4E 1149Z 11 APR
CHEDUBA_ISLAND 18.9N 93.4E 1149Z 11 APR
PYINKAYAING 15.9N 94.3E 1150Z 11 APR
SITTWE 20.0N 92.9E 1226Z 11 APR
MERGUI 12.8N 98.4E 1316Z 11 APR
YANGON 16.5N 96.4E 1507Z 11 APR
THAILAND PHUKET 8.0N 98.2E 1118Z 11 APR
KO_PHRA_THONG 9.1N 98.2E 1223Z 11 APR
KO_TARUTAO 6.6N 99.6E 1256Z 11 APR
MALDIVES GAN 0.6S 73.2E 1137Z 11 APR
MINICOV 8.3N 73.0E 1210Z 11 APR
MALE 4.2N 73.6E 1211Z 11 APR
UNITED KINGDOM DIEGO_GARCIA 7.3S 72.4E 1153Z 11 APR
MALAYSIA GEORGETOWN 5.4N 100.1E 1311Z 11 APR
PORT_DICKSON 2.5N 101.7E 1810Z 11 APR
MAURITIUS PORT_LOUIS 20.0S 57.3E 1455Z 11 APR
REUNION ST_DENIS 20.8S 55.2E 1512Z 11 APR
SEYCHELLES VICTORIA 4.5S 55.6E 1516Z 11 APR
PAKISTAN GWADAR 25.1N 62.4E 1536Z 11 APR
KARACHI 24.7N 66.9E 1644Z 11 APR
SOMALIA CAPE_GUARO 11.9N 51.4E 1539Z 11 APR
HILALAYA 6.4N 49.1E 1540Z 11 APR
MOGADISHU 2.0N 45.5E 1558Z 11 APR
KAAMBOONI 1.5S 41.9E 1623Z 11 APR
OMAN MUSCAT 23.9N 58.6E 1540Z 11 APR
SALALAH 16.9N 54.1E 1547Z 11 APR
DUQM 19.7N 57.8E 1556Z 11 APR
MADAGASCAR ANTSIRANANA 12.1S 49.5E 1544Z 11 APR
TOAMASINA 17.8S 49.6E 1551Z 11 APR
MANAKARA 22.2S 48.2E 1610Z 11 APR
MAHAJANGA 15.4S 46.2E 1653Z 11 APR
CAP_STE_MARIE 25.8S 45.2E 1713Z 11 APR
TOLIARA 23.4S 43.6E 1733Z 11 APR
IRAN GAVATER 25.0N 61.3E 1546Z 11 APR
UAE FUJAIRAH 25.1N 56.4E 1621Z 11 APR
YEMEN AL_MUKALLA 14.5N 49.2E 1626Z 11 APR
ADEN 13.0N 45.2E 1726Z 11 APR
COMORES MORONI 11.6S 43.3E 1644Z 11 APR
BANGLADESH CHITTAGONG 22.7N 91.2E 1651Z 11 APR
TANZANIA LINDI 9.8S 39.9E 1659Z 11 APR
DAR_ES_SALAAM 6.7S 39.4E 1732Z 11 APR
MOZAMBIQUE CABO_DELGADO 10.7S 40.7E 1701Z 11 APR
ANGOCHE 15.5S 40.6E 1720Z 11 APR
QUELIMANE 18.0S 37.1E 1841Z 11 APR
MAPUTO 25.9S 32.8E 1959Z 11 APR
BEIRA 19.9S 35.1E 2016Z 11 APR
KENYA MOMBASA 4.0S 39.7E 1706Z 11 APR
CROZET ISLANDS CROZET_ISLANDS 46.4S 51.8E 1733Z 11 APR
KERGUELEN ISLAN PORT_AUX_FRANCA 49.0S 69.1E 1815Z 11 APR
SOUTH AFRICA PRINCE_EDWARD_I 46.6S 37.6E 1907Z 11 APR
DURBAN 29.8S 31.2E 1910Z 11 APR
PORT_ELIZABETH 33.9S 25.8E 2006Z 11 APR
CAPE_TOWN 34.1S 18.0E 2109Z 11 APR
SINGAPORE SINGAPORE 1.2N 103.8E 2351Z 11 APR

ADDITIONAL BULLETINS WILL BE ISSUED BY THE PACIFIC TSUNAMI
WARNING CENTER FOR THIS EVENT AS MORE INFORMATION
BECOMES AVAILABLE.

THE JAPAN METEOROLOGICAL AGENCY MAY ISSUE ADDITIONAL INFORMATION
FOR THIS EVENT. IN THE CASE OF CONFLICTING INFORMATION...THE
MORE CONSERVATIVE INFORMATION SHOULD BE USED FOR SAFETY.

[Crostorm]

This event has been reviewed by a seismologist.
Magnitude
8.7
Date-Time
Wednesday, April 11, 2012 at 08:38:38 UTC
Wednesday, April 11, 2012 at 02:38:38 PM at epicenter
Time of Earthquake in other Time Zones
Location
2.348°N, 93.073°E
Depth
33 km (20.5 miles)
Region
OFF THE WEST COAST OF NORTHERN SUMATRA
Distances
434 km (269 miles) SW of Banda Aceh, Sumatra, Indonesia
550 km (341 miles) SW of Lhokseumawe, Sumatra, Indonesia
963 km (598 miles) W of KUALA LUMPUR, Malaysia
1797 km (1116 miles) WNW of JAKARTA, Java, Indonesia
Location Uncertainty
horizontal +/- 14 km (8.7 miles); depth +/- 2.8 km (1.7 miles)
Parameters
NST=243, Nph=243, Dmin=514.3 km, Rmss=1.67 sec, Gp= 36°,
M-type=regional moment magnitude (Mw), Version=8
Source
Magnitude: USGS NEIC (WDCS-D)
Location: USGS NEIC (WDCS-D)
Event ID
usc000905e

[brunota2003]

There are tsunami warnings out now.

[Chacor]

There are tsunami warnings out now.

As far as I can tell, the PTWC and JMA are both holding at watch status for now.

WEIO21 PHEB 111014
TSUIOX

TSUNAMI BULLETIN NUMBER 003
PACIFIC TSUNAMI WARNING CENTER/NOAA/NWS
ISSUED AT 1014Z 11 APR 2012

THIS BULLETIN IS FOR ALL AREAS OF THE INDIAN OCEAN.

... AN INDIAN-OCEAN-WIDE TSUNAMI WATCH IS IN EFFECT ...

A TSUNAMI WATCH IS IN EFFECT FOR

INDONESIA / INDIA / AUSTRALIA / SRI LANKA / MYANMAR / THAILAND /
MALDIVES / UNITED KINGDOM / MALAYSIA / MAURITIUS / REUNION /
SEYCHELLES / OMAN / PAKISTAN / SOMALIA / MADAGASCAR / IRAN /
UAE / YEMEN / COMORES / MOZAMBIQUE / KENYA / TANZANIA /
CROZET ISLANDS / BANGLADESH / KERGUELEN ISLANDS / SOUTH AFRICA /
SINGAPORE

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 - 0839Z 11 APR 2012
COORDINATES - 2.3 NORTH 93.1 EAST
LOCATION - OFF W COAST OF NORTHERN SUMATRA
MAGNITUDE - 8.7

MEASUREMENTS OR REPORTS OF TSUNAMI WAVE ACTIVITY

GAUGE LOCATION LAT LON TIME AMPL PER
------------------- ----- ------ ----- --------------- -----
DART 23401 8.9N 88.5E 0956Z 0.03M / 0.1FT 06MIN
MEULABOH ID 4.1N 96.1E 0950Z 0.27M / 0.9FT 14MIN
SABANG ID 5.8N 95.3E 0956Z 0.31M / 1.0FT 08MIN

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
ALREADY HAVE BEEN DESTRUCTIVE ALONG SOME COASTS.

BASED ON THESE DATA THE THREAT CONTINUES FOR ALL COASTAL AREAS OF
THE INDIAN OCEAN. FOR THOSE AREAS - WHEN NO MAJOR WAVES HAVE
OCCURRED FOR AT LEAST TWO HOURS AFTER THE ESTIMATED ARRIVAL TIME
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.

Code: Select all

 LOCATION         FORECAST POINT     COORDINATES     ARRIVAL TIME
 --------------------------------    ------------    ------------
 INDONESIA        SIMEULUE            2.5N  96.0E    0912Z 11 APR
                  BANDA_ACEH          5.5N  95.1E    0933Z 11 APR
                  SIBERUT             1.5S  98.7E    0944Z 11 APR
                  PADANG              0.9S 100.1E    1025Z 11 APR
                  BENGKULU            3.9S 102.0E    1037Z 11 APR
                  CILACAP             7.8S 108.9E    1150Z 11 APR
                  BANDAR_LAMPUNG      5.7S 105.3E    1200Z 11 APR
                  BALI                8.7S 115.3E    1234Z 11 APR
                  BELAWAN             3.8N  98.8E    1326Z 11 APR
                  KUPANG             10.0S 123.4E    1333Z 11 APR
                  BALI                8.7S 115.3E    1234Z 11 APR
 INDIA            GREAT_NICOBAR       7.1N  93.6E    0937Z 11 APR
                  LITTLE_ANDAMAN     10.7N  92.3E    1015Z 11 APR
                  NORTH_ANDAMAN      13.3N  92.6E    1045Z 11 APR
                  PORT_BLAIR         11.9N  92.7E    1050Z 11 APR
                  CHENNAI            13.4N  80.4E    1134Z 11 APR
                  TRIVANDRUM          8.3N  76.9E    1204Z 11 APR
                  KAKINADA           17.2N  82.7E    1204Z 11 APR
                  MANGALORE          13.3N  74.4E    1339Z 11 APR
                  BOMBAY             18.8N  72.6E    1605Z 11 APR
                  GULF_OF_KUTCH      22.7N  68.9E    1636Z 11 APR
 AUSTRALIA        COCOS_ISLAND       12.1S  96.7E    1046Z 11 APR
                  NORTH_WEST_CAPE    21.5S 113.9E    1312Z 11 APR
                  CAPE_INSPIRATIO    25.9S 113.0E    1413Z 11 APR
                  PERTH              32.0S 115.3E    1421Z 11 APR
                  AUGUSTA            34.3S 114.7E    1440Z 11 APR
                  GERALDTOWN         28.6S 114.3E    1456Z 11 APR
                  CAPE_LEVEQUE       16.1S 122.6E    1500Z 11 APR
                  ESPERANCE          34.0S 121.8E    1614Z 11 APR
                  KINGSTON_SOUTH_    37.0S 139.4E    1747Z 11 APR
                  HEARD_ISLAND       54.0S  73.5E    1803Z 11 APR
                  EUCLA_MOTEL        31.8S 128.9E    1824Z 11 APR
                  HOBART             43.3S 147.6E    1858Z 11 APR
                  DARWIN             12.1S 130.7E    1921Z 11 APR
 SRI LANKA        TRINCOMALEE         8.7N  81.3E    1049Z 11 APR
                  DONDRA_HEAD         5.9N  80.6E    1054Z 11 APR
                  COLOMBO             6.9N  79.8E    1121Z 11 APR
                  JAFFNA              9.9N  80.0E    1235Z 11 APR
 MYANMAR          CHEDUBA_ISLAND     18.9N  93.4E    1142Z 11 APR
                  CHEDUBA_ISLAND     18.9N  93.4E    1142Z 11 APR
                  PYINKAYAING        15.9N  94.3E    1152Z 11 APR
                  SITTWE             20.0N  92.9E    1220Z 11 APR
                  MERGUI             12.8N  98.4E    1328Z 11 APR
                  YANGON             16.5N  96.4E    1720Z 11 APR
 THAILAND         PHUKET              8.0N  98.2E    1113Z 11 APR
                  KO_PHRA_THONG       9.1N  98.2E    1203Z 11 APR
                  KO_TARUTAO          6.6N  99.6E    1233Z 11 APR
 MALDIVES         GAN                 0.6S  73.2E    1144Z 11 APR
                  MALE                4.2N  73.6E    1149Z 11 APR
                  MINICOV             8.3N  73.0E    1214Z 11 APR
 UNITED KINGDOM   DIEGO_GARCIA        7.3S  72.4E    1202Z 11 APR
 MALAYSIA         GEORGETOWN          5.4N 100.1E    1303Z 11 APR
                  PORT_DICKSON        2.5N 101.7E    1743Z 11 APR
 MAURITIUS        PORT_LOUIS         20.0S  57.3E    1500Z 11 APR
 REUNION          ST_DENIS           20.8S  55.2E    1514Z 11 APR
 SEYCHELLES       VICTORIA            4.5S  55.6E    1525Z 11 APR
 OMAN             SALALAH            16.9N  54.1E    1537Z 11 APR
                  MUSCAT             23.9N  58.6E    1544Z 11 APR
                  DUQM               19.7N  57.8E    1553Z 11 APR
 PAKISTAN         GWADAR             25.1N  62.4E    1546Z 11 APR
                  KARACHI            24.7N  66.9E    1638Z 11 APR
 SOMALIA          HILALAYA            6.4N  49.1E    1546Z 11 APR
                  CAPE_GUARO         11.9N  51.4E    1547Z 11 APR
                  MOGADISHU           2.0N  45.5E    1602Z 11 APR
                  KAAMBOONI           1.5S  41.9E    1629Z 11 APR
 MADAGASCAR       ANTSIRANANA        12.1S  49.5E    1548Z 11 APR
                  TOAMASINA          17.8S  49.6E    1601Z 11 APR
                  MANAKARA           22.2S  48.2E    1616Z 11 APR
                  MAHAJANGA          15.4S  46.2E    1652Z 11 APR
                  CAP_STE_MARIE      25.8S  45.2E    1716Z 11 APR
                  TOLIARA            23.4S  43.6E    1741Z 11 APR
 IRAN             GAVATER            25.0N  61.3E    1552Z 11 APR
 UAE              FUJAIRAH           25.1N  56.4E    1630Z 11 APR
 YEMEN            AL_MUKALLA         14.5N  49.2E    1637Z 11 APR
                  ADEN               13.0N  45.2E    1722Z 11 APR
 COMORES          MORONI             11.6S  43.3E    1649Z 11 APR
 MOZAMBIQUE       CABO_DELGADO       10.7S  40.7E    1706Z 11 APR
                  ANGOCHE            15.5S  40.6E    1738Z 11 APR
                  QUELIMANE          18.0S  37.1E    1905Z 11 APR
                  MAPUTO             25.9S  32.8E    1955Z 11 APR
                  BEIRA              19.9S  35.1E    2017Z 11 APR
 KENYA            MOMBASA             4.0S  39.7E    1706Z 11 APR
 TANZANIA         LINDI               9.8S  39.9E    1707Z 11 APR
                  DAR_ES_SALAAM       6.7S  39.4E    1710Z 11 APR
 CROZET ISLANDS   CROZET_ISLANDS     46.4S  51.8E    1734Z 11 APR
 BANGLADESH       CHITTAGONG         22.7N  91.2E    1735Z 11 APR
 KERGUELEN ISLAN  PORT_AUX_FRANCA    49.0S  69.1E    1816Z 11 APR
 SOUTH AFRICA     PRINCE_EDWARD_I    46.6S  37.6E    1907Z 11 APR
                  DURBAN             29.8S  31.2E    1910Z 11 APR
                  PORT_ELIZABETH     33.9S  25.8E    2011Z 11 APR
                  CAPE_TOWN          34.1S  18.0E    2111Z 11 APR
 SINGAPORE        SINGAPORE           1.2N 103.8E    2330Z 11 APR

ADDITIONAL BULLETINS WILL BE ISSUED BY THE PACIFIC TSUNAMI
WARNING CENTER FOR THIS EVENT AS MORE INFORMATION
BECOMES AVAILABLE.

THE JAPAN METEOROLOGICAL AGENCY MAY ISSUE ADDITIONAL INFORMATION
FOR THIS EVENT. IN THE CASE OF CONFLICTING INFORMATION...THE
MORE CONSERVATIVE INFORMATION SHOULD BE USED FOR SAFETY.

[Chacor]

Also, USGS has revised magnitude to 8.6 now.

[Crostorm]

2.34 N 93.16 E 10 8.7 OFF W COAST OF NORTHERN SUMATRA


1.02 N 92.34 E 5 6.2 OFF W COAST OF NORTHERN SUMATRA

2.84 N 92.41 E 0 5.4 OFF W COAST OF NORTHERN SUMATRA

2.67 N 90.05 E 10 5.1 OFF W COAST OF NORTHERN SUMATRA

2.61 N 90.38 E 100 5.1 OFF W COAST OF NORTHERN SUMATRA

3.29 N 90.54 E 80 5.1 OFF W COAST OF NORTHERN SUMATRA

[Crostorm]

Jakarta, Indonesia (CNN) -- A massive earthquake struck off the coast of the Indonesian island of Sumatra on Wednesday afternoon, triggering a tsunami alert for the Indian Ocean.
The quake struck about 434 kilometers (270 miles) southwest of Banda Aceh, the capital of Indonesia's Aceh province, and had a magnitude of 8.6, the U.S. Geological Survey said. It took place at a depth of 23 kilometers (14 miles).
The tremor revived fearful memories of the catastrophic earthquake and tsunami in the region in 2004 that killed tens of thousands of people.
The Pacific Tsunami Warning Center said Wednesday that it had issued a tsunami watch for the entire Indian Ocean, and the Indonesian Meteorology, Climatology and Geophysics Agency said it had put up a tsunami warning.
The Indonesian president, Susilo Bambang Yudhoyono, said on local television that there were no reports of casualties or damage in Aceh so far.
The areas most at risk of a tsunami are coastal areas of Aceh, particularly the island of Simeulue, Prih Harjadi, an official for the Indonesian geophysics agency said on Metro TV.
The earthquake appears to have involved a horizontal movement rather than a vertical movement, so it is less likely that it will generate a tsunami, said Gary Gibson from the Seismology Research Center in Melbourne, Australia.
He also said that the tremor took place a long way offshore and was therefore unlikely to have caused much damage itself.
The power has gone out in Banda Aceh and residents are moving to higher ground, said Sutopo Purwo Nugroho, a spokesman for the Indonesian National Disaster Management Agency.
The authorities in India's Andaman and Nicobar Islands have ordered people to move out of low-lying areas.
The region's chief secretary, Shakti Sinha, said that there are "a few hundred people" in the areas where the evacuation order had been issued.
In 2004, a 9.1-magnitude underwater earthquake struck off the coast of Sumatra, triggering a tsunami that killed more than 200,000 people in 14 countries. The majority of the deaths were in Indonesia, with Aceh bearing the brunt.
That quake took place 250 kilometers (155 miles) south-southeast of Banda Aceh at a depth of 30 kilometers (19 miles).
The tsunami, which washed away entire communities, caused nearly $10 billion in damage and more casualties than any other tsunami in history, according to the United Nations.
Indonesia is on the so-called Ring of Fire, an arc of fault lines circling the Pacific Basin that is prone to frequent earthquakes and volcanic eruptions.
The earthquake Wednesday comes just over year after a magnitude 9 quake off the northeast coast of Japan caused a devastating tsunami. The death toll from that disaster stands at about 15,850.

[Chacor]

Major 8.3 aftershock at 10:43 UTC, according to PTWC.
JMA has the aftershock at 8.6 — the same intensity as the initial quake.

[Crostorm]

000
WEIO21 PHEB 111054
TSUIOX

TSUNAMI BULLETIN NUMBER 004
PACIFIC TSUNAMI WARNING CENTER/NOAA/NWS
ISSUED AT 1054Z 11 APR 2012

THIS BULLETIN IS FOR ALL AREAS OF THE INDIAN OCEAN.

... AN INDIAN-OCEAN-WIDE TSUNAMI WATCH IS IN EFFECT ...

... A MAJOR AFTERSHOCK OCCURRED AT 11:43Z WITH MAGNITUDE 8.3 ...

A TSUNAMI WATCH IS STILL IN EFFECT FOR

INDONESIA / INDIA / AUSTRALIA / SRI LANKA / MYANMAR / THAILAND /
MALDIVES / UNITED KINGDOM / MALAYSIA / MAURITIUS / REUNION /
SEYCHELLES / OMAN / PAKISTAN / SOMALIA / MADAGASCAR / IRAN /
UAE / YEMEN / COMORES / MOZAMBIQUE / KENYA / TANZANIA /
CROZET ISLANDS / BANGLADESH / KERGUELEN ISLANDS / SOUTH AFRICA /
SINGAPORE

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 - 0839Z 11 APR 2012
COORDINATES - 2.3 NORTH 93.1 EAST
LOCATION - OFF W COAST OF NORTHERN SUMATRA
MAGNITUDE - 8.7

MEASUREMENTS OR REPORTS OF TSUNAMI WAVE ACTIVITY

GAUGE LOCATION LAT LON TIME AMPL PER
------------------- ----- ------ ----- --------------- -----
TELUKDALAM ID 0.6N 97.8E 0952Z 0.15M / 0.5FT 08MIN
SABANG ID 5.8N 95.3E 1010Z 0.36M / 1.2FT 06MIN
MEULABOH ID 4.1N 96.1E 1007Z 1.06M / 3.5FT 12MIN
DART 23401 8.9N 88.5E 0956Z 0.03M / 0.1FT 06MIN
SABANG ID 5.8N 95.3E 0956Z 0.31M / 1.0FT 08MIN

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
ALREADY HAVE BEEN DESTRUCTIVE ALONG SOME COASTS.

BASED ON THESE DATA THE THREAT CONTINUES FOR ALL COASTAL AREAS OF
THE INDIAN OCEAN. FOR THOSE AREAS - WHEN NO MAJOR WAVES HAVE
OCCURRED FOR AT LEAST TWO HOURS AFTER THE ESTIMATED ARRIVAL TIME
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.

Code: Select all

LOCATION         FORECAST POINT     COORDINATES     ARRIVAL TIME
 --------------------------------    ------------    ------------
 INDONESIA        SIMEULUE            2.5N  96.0E    0912Z 11 APR
                  BANDA_ACEH          5.5N  95.1E    0933Z 11 APR
                  SIBERUT             1.5S  98.7E    0944Z 11 APR
                  PADANG              0.9S 100.1E    1025Z 11 APR
                  BENGKULU            3.9S 102.0E    1037Z 11 APR
                  CILACAP             7.8S 108.9E    1150Z 11 APR
                  BANDAR_LAMPUNG      5.7S 105.3E    1200Z 11 APR
                  BALI                8.7S 115.3E    1234Z 11 APR
                  BELAWAN             3.8N  98.8E    1326Z 11 APR
                  KUPANG             10.0S 123.4E    1333Z 11 APR
                  BALI                8.7S 115.3E    1234Z 11 APR
 INDIA            GREAT_NICOBAR       7.1N  93.6E    0937Z 11 APR
                  LITTLE_ANDAMAN     10.7N  92.3E    1015Z 11 APR
                  NORTH_ANDAMAN      13.3N  92.6E    1045Z 11 APR
                  PORT_BLAIR         11.9N  92.7E    1050Z 11 APR
                  CHENNAI            13.4N  80.4E    1134Z 11 APR
                  TRIVANDRUM          8.3N  76.9E    1204Z 11 APR
                  KAKINADA           17.2N  82.7E    1204Z 11 APR
                  MANGALORE          13.3N  74.4E    1339Z 11 APR
                  BOMBAY             18.8N  72.6E    1605Z 11 APR
                  GULF_OF_KUTCH      22.7N  68.9E    1636Z 11 APR
 AUSTRALIA        COCOS_ISLAND       12.1S  96.7E    1046Z 11 APR
                  NORTH_WEST_CAPE    21.5S 113.9E    1312Z 11 APR
                  CAPE_INSPIRATIO    25.9S 113.0E    1413Z 11 APR
                  PERTH              32.0S 115.3E    1421Z 11 APR
                  AUGUSTA            34.3S 114.7E    1440Z 11 APR
                  GERALDTOWN         28.6S 114.3E    1456Z 11 APR
                  CAPE_LEVEQUE       16.1S 122.6E    1500Z 11 APR
                  ESPERANCE          34.0S 121.8E    1614Z 11 APR
                  KINGSTON_SOUTH_    37.0S 139.4E    1747Z 11 APR
                  HEARD_ISLAND       54.0S  73.5E    1803Z 11 APR
                  EUCLA_MOTEL        31.8S 128.9E    1824Z 11 APR
                  HOBART             43.3S 147.6E    1858Z 11 APR
                  DARWIN             12.1S 130.7E    1921Z 11 APR
 SRI LANKA        TRINCOMALEE         8.7N  81.3E    1049Z 11 APR
                  DONDRA_HEAD         5.9N  80.6E    1054Z 11 APR
                  COLOMBO             6.9N  79.8E    1121Z 11 APR
                  JAFFNA              9.9N  80.0E    1235Z 11 APR
 MYANMAR          CHEDUBA_ISLAND     18.9N  93.4E    1142Z 11 APR
                  CHEDUBA_ISLAND     18.9N  93.4E    1142Z 11 APR
                  PYINKAYAING        15.9N  94.3E    1152Z 11 APR
                  SITTWE             20.0N  92.9E    1220Z 11 APR
                  MERGUI             12.8N  98.4E    1328Z 11 APR
                  YANGON             16.5N  96.4E    1720Z 11 APR
 THAILAND         PHUKET              8.0N  98.2E    1113Z 11 APR
                  KO_PHRA_THONG       9.1N  98.2E    1203Z 11 APR
                  KO_TARUTAO          6.6N  99.6E    1233Z 11 APR
 MALDIVES         GAN                 0.6S  73.2E    1144Z 11 APR
                  MALE                4.2N  73.6E    1149Z 11 APR
                  MINICOV             8.3N  73.0E    1214Z 11 APR
 UNITED KINGDOM   DIEGO_GARCIA        7.3S  72.4E    1202Z 11 APR
 MALAYSIA         GEORGETOWN          5.4N 100.1E    1303Z 11 APR
                  PORT_DICKSON        2.5N 101.7E    1743Z 11 APR
 MAURITIUS        PORT_LOUIS         20.0S  57.3E    1500Z 11 APR
 REUNION          ST_DENIS           20.8S  55.2E    1514Z 11 APR
 SEYCHELLES       VICTORIA            4.5S  55.6E    1525Z 11 APR
 OMAN             SALALAH            16.9N  54.1E    1537Z 11 APR
                  MUSCAT             23.9N  58.6E    1544Z 11 APR
                  DUQM               19.7N  57.8E    1553Z 11 APR
 PAKISTAN         GWADAR             25.1N  62.4E    1546Z 11 APR
                  KARACHI            24.7N  66.9E    1638Z 11 APR
 SOMALIA          HILALAYA            6.4N  49.1E    1546Z 11 APR
                  CAPE_GUARO         11.9N  51.4E    1547Z 11 APR
                  MOGADISHU           2.0N  45.5E    1602Z 11 APR
                  KAAMBOONI           1.5S  41.9E    1629Z 11 APR
 MADAGASCAR       ANTSIRANANA        12.1S  49.5E    1548Z 11 APR
                  TOAMASINA          17.8S  49.6E    1601Z 11 APR
                  MANAKARA           22.2S  48.2E    1616Z 11 APR
                  MAHAJANGA          15.4S  46.2E    1652Z 11 APR
                  CAP_STE_MARIE      25.8S  45.2E    1716Z 11 APR
                  TOLIARA            23.4S  43.6E    1741Z 11 APR
 IRAN             GAVATER            25.0N  61.3E    1552Z 11 APR
 UAE              FUJAIRAH           25.1N  56.4E    1630Z 11 APR
 YEMEN            AL_MUKALLA         14.5N  49.2E    1637Z 11 APR
                  ADEN               13.0N  45.2E    1722Z 11 APR
 COMORES          MORONI             11.6S  43.3E    1649Z 11 APR
 MOZAMBIQUE       CABO_DELGADO       10.7S  40.7E    1706Z 11 APR
                  ANGOCHE            15.5S  40.6E    1738Z 11 APR
                  QUELIMANE          18.0S  37.1E    1905Z 11 APR
                  MAPUTO             25.9S  32.8E    1955Z 11 APR
                  BEIRA              19.9S  35.1E    2017Z 11 APR
 KENYA            MOMBASA             4.0S  39.7E    1706Z 11 APR
 TANZANIA         LINDI               9.8S  39.9E    1707Z 11 APR
                  DAR_ES_SALAAM       6.7S  39.4E    1710Z 11 APR
 CROZET ISLANDS   CROZET_ISLANDS     46.4S  51.8E    1734Z 11 APR
 BANGLADESH       CHITTAGONG         22.7N  91.2E    1735Z 11 APR
 KERGUELEN ISLAN  PORT_AUX_FRANCA    49.0S  69.1E    1816Z 11 APR
 SOUTH AFRICA     PRINCE_EDWARD_I    46.6S  37.6E    1907Z 11 APR
                  DURBAN             29.8S  31.2E    1910Z 11 APR
                  PORT_ELIZABETH     33.9S  25.8E    2011Z 11 APR
                  CAPE_TOWN          34.1S  18.0E    2111Z 11 APR
 SINGAPORE        SINGAPORE           1.2N 103.8E    2330Z 11 APR


[brunota2003]

Thailand's National Disaster Warning Center issued an evacuation order to residents in six provinces along the country's west coast, including the popular tourist destinations of Phuket, Krabi and Phang-Nga.

India's Tsunami Warning Center issued a warning for parts of the eastern Andaman and Nicobar islands. In Tamil Nadu in southern India, police cordoned off the beach and used loudspeakers to warn people to leave the area.

From the Yahoo! News Article on the quake.

[Chacor]

WEIO21 PHEB 111236
TSUIOX

TSUNAMI BULLETIN NUMBER 006
PACIFIC TSUNAMI WARNING CENTER/NOAA/NWS
ISSUED AT 1236Z 11 APR 2012

THIS BULLETIN IS FOR ALL AREAS OF THE INDIAN OCEAN.

... THE TSUNAMI WATCH IS CANCELLED FOR BOTH MAIN SHOCK
AT 0839Z AND AFTERSHOCK AT 1043Z ...

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 - 0839Z 11 APR 2012
COORDINATES - 2.3 NORTH 93.1 EAST
LOCATION - OFF W COAST OF NORTHERN SUMATRA
MAGNITUDE - 8.7

MEASUREMENTS OR REPORTS OF TSUNAMI WAVE ACTIVITY

GAUGE LOCATION LAT LON TIME AMPL PER
------------------- ----- ------ ----- --------------- -----
KO TAPHAO NOI TH 7.8N 98.4E 1143Z 0.05M / 0.2FT 06MIN
ENGGANO ID 5.3S 102.3E 1104Z 0.12M / 0.4FT 04MIN
TRINCONMALEE LK 8.6N 81.2E 1129Z 0.06M / 0.2FT 16MIN
TELUKDALAM ID 0.6N 97.8E 1044Z 0.22M / 0.7FT 14MIN
COCOS ISLAND AU 12.1S 96.9E 1102Z 0.08M / 0.3FT 18MIN
SABANG ID 5.8N 95.3E 1010Z 0.36M / 1.2FT 06MIN
MEULABOH ID 4.1N 96.1E 1007Z 1.06M / 3.5FT 12MIN
DART 23401 8.9N 88.5E 0956Z 0.03M / 0.1FT 06MIN

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

A SIGNIFICANT TSUNAMI WAS GENERATED BY THIS EARTHQUAKE.
HOWEVER...SEA LEVEL READINGS NOW INDICATE THAT THE THREAT HAS
DIMINISHED OR IS OVER FOR MOST AREAS. THEREFORE THE TSUNAMI
WATCH ISSUED BY THIS CENTER IS NOW CANCELLED.

FOR ANY AFFECTED AREAS - WHEN NO MAJOR WAVES HAVE OCCURRED FOR AT
LEAST TWO HOURS AFTER THE ESTIMATED ARRIVAL TIME 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.

THIS WILL BE THE FINAL BULLETIN ISSUED BY THE PACIFIC TSUNAMI
WARNING CENTER FOR THIS EVENT UNLESS ADDITIONAL INFORMATION
BECOMES AVAILABLE.

THE JAPAN METEOROLOGICAL AGENCY MAY ISSUE ADDITIONAL INFORMATION
FOR THIS EVENT. IN THE CASE OF CONFLICTING INFORMATION...THE
MORE CONSERVATIVE INFORMATION SHOULD BE USED FOR SAFETY.