A strong magnitude 7.9 earthquake occurred at 17:48:15 (UTC) on Tuesday, September 29, 2009, in the Samoa Islands region, 196 km SW from Pago Pago, American Samoa, at a depth of 33 km.

A strong magnitude 6.6 earthquake occurred at 14:51:33 (UTC) on Sunday, August 30, 2009, in the Samoa Islands region, 155 km ENE of Hihifo, Tonga, at a depth of 10 km.

A strong magnitude 6.3 earthquake occurred at 09:11:34 (UTC) on Wednesday, December 24, 2008 in the Tonga region, 250 km SE of Hihifo, Tonga, at a depth of 10 km. Location 17.307°S, 171.893°W

A strong magnitude 6.3 earthquake occurred at 12:55:56 (UTC) on Wednesday, October 22, 2008 in the Tonga region, 132 km WNW from Neiafu, Tonga, at a depth of 233 km. Location 18.308°S, 175.178°W

A strong magnitude 7.1 earthquake occurred at 05:10:36 (UTC) on Sunday, October 19, 2008 in the Tonga region, 150 km ESE of Nuku'Alofa, at a depth of 42.6 km. Location 21.751°S, 173.914°W

A strong magnitude 6.3 earthquake occurred at 16:30:16 (UTC) on Tuesday, August 19, 2008 in the Samoa islands region, 185 km SW from Apia, at a depth of 32 km.

A strong magnitude 6.5 earthquake occurred at 21:19:13 (UTC) on Thursday, Thursday, June 26, 2008 in the Tonga region, 201 km ENE from Nuku`alofa, at a depth of 20 km.

A strong magnitude 6.2 earthquake occurred at 15:51:31 (UTC) on Thursday, December 13, 2007 in the Samoa islands region, 173 km SSW from Apia, at a depth of 45 km.

A strong magnitude 6.0 earthquake occurred at 12:37:31 (UTC) on Sunday, August 26, 2007 in the Tonga region, 150 km NNW of Neiafu, Tonga, at a depth of 127.2 km.