Tag Archives: Tonga

Earthquake Near Tonga Volcano

Posted on by

Very strong shallow earthquake near Niuafo’ou volcano (Tonga) – NO special volcanic activity reported

Last update: September 23, 2011 at 1:04 am by By 

Article also compiled by Carlos Robles
Earthquake overview :  Very strong earthquake near a rim volcano island in Tonga. As this earthquake is extremely shallow and as the location of the epicenter has a substantial error margin, we feared for volcanic activity.

NOAA tsunami message for the Pacific :
NO DESTRUCTIVE WIDESPREAD TSUNAMI THREAT EXISTS BASED ON HISTORICAL EARTHQUAKE AND TSUNAMI DATA

IMPORTANT UPDATE 00:57 UTC :
Matangi reports : The earthquake was felt by Niuafo’ou residents. Meola Vaka at the Western Union office at ‘Esia said she felt an earthquake this morning that lasted for less than a minute. She said there was no unusual volcanic activity evident on the island.

Update 23/09 – 00:11 UTC : Both EMSC and USGS have epicenters approx. 30 to 40 km from the volcanic island.  If the epicenter locations are accurate which we do not know at the moment, it may be well a normal earthquake close to a volcano.

Update 23/09 – 00:11 UTC : The latest known eruption from the volcano was in 1985.

Update 23/09 – 00:04 UTC : Between 1946 and 1947, the island was completely evacuated by the Tongan government following a volcanic eruption. In 1957 about half of the population returned to Niuafo’ou, and the rest remained in ‘Eua (source Wikipedia)

Update 23:59 UTC : As this earthquake is extremely shallow and as the location of the epicenter has a substantial error margin, we do not exclude volcanic activity.

for more and to get updates, go to:    http://earthquake-report.com/2011/09/23/very-strong-shallow-earthquake-near-niuafoou-tonga-volcanic-origin/