Tsunami Alerts (PTWC) from Pacific Tsunami Warning Center
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Tsunami Alerts (PTWC) from Pacific Tsunami Warning Center
@tsunamialertsptwc.bsky.social
Tsunami alerts from the PTWC for the Pacific region, including Hawaii.

US Coast/AK: @tsunamialertsntwc.bsky.social
Pacific/HI: @tsunamialertsptwc.bsky.social
#Earthquake
M5.5 earthquake VICINITY OF GUAM 14:53PST Nov 9 Depth 102km: Tsunami NOT expected

- Event details: Preliminary magnitude 5.5 (Mww) earthquake / Lat: 13.620, Lon: 145.020 at 2025-11-09T22:53:38Z
November 9, 2025 at 11:09 PM
#Earthquake
M6.7 earthquake OFF THE EAST COAST OF HONSHU JAPAN 00:03PST Nov 9 Depth 10km: Tsunami NOT expected

- Event details: Preliminary magnitude 6.7 (Mwp) earthquake / Lat: 39.400, Lon: 143.500 at 2025-11-09T08:03:40Z
November 9, 2025 at 8:17 AM
#Earthquake
M6.7 earthquake OFF THE EAST COAST OF HONSHU JAPAN 00:03PST Nov 9 Depth 10km: Tsunami NOT expected

Tsunami Info Bulletin issued by PTWC to its US and international AOR for large earthquakes in the Pacific Basin that ...
November 9, 2025 at 8:16 AM
#Earthquake
M5.8 earthquake ABOUT 102 MILES SOUTHWEST OF GUAM 23:37PST Nov 3 Depth 107km: Tsunami NOT expected

- Event details: Preliminary magnitude 5.8 (Mwp) earthquake / Lat: 12.418, Lon: 143.423 at 2025-11-04T07:37:26Z
November 4, 2025 at 7:51 AM
#Earthquake
M6.1 earthquake LEEWARD ISLANDS 05:54PDT Oct 27 Depth 10km

TSUNAMI INFORMATION STATEMENT - Event details: Preliminary magnitude 6.1 (mb) earthquake / Lat: 16.515, Lon: -59.572 at 2025-10-27T12:54:59Z
October 27, 2025 at 1:18 PM
#Earthquake
M6.8 earthquake LEEWARD ISLANDS 05:38PDT Oct 27 Depth 10km: Tsunami NOT expected

Tsunami Info Bulletin for large earthquakes in the Gulf of Mexico, Caribbean and Atlantic areas of which magnitudes could affect the San Juan and Caribbean areas.
October 27, 2025 at 12:53 PM
#Earthquake
M6.8 earthquake LEEWARD ISLANDS 05:38PDT Oct 27 Depth 10km: Tsunami NOT expected

Tsunami Info Bulletin for large earthquakes in the Gulf of Mexico, Caribbean and Atlantic areas of which magnitudes could affect the San Juan and Caribbean areas.
October 27, 2025 at 12:50 PM
#Earthquake
M6.8 earthquake LEEWARD ISLANDS 05:38PDT Oct 27 Depth 0km

TSUNAMI INFORMATION STATEMENT - Event details: Preliminary magnitude 6.8 (Mwp) earthquake / Lat: 16.535, Lon: -59.494 at 2025-10-27T12:38:37Z
October 27, 2025 at 12:48 PM
#Earthquake
M6.7 earthquake PAPUA INDONESIA 22:48PDT Oct 15 Depth 70km: Tsunami NOT expected

- Event details: Preliminary magnitude 6.7 (Mwp) earthquake / Lat: -2.309, Lon: 138.858 at 2025-10-16T05:48:57Z
October 16, 2025 at 5:57 AM
#Earthquake
M6.6 earthquake DRAKE PASSAGE 18:42PDT Oct 15 Depth 10km: Tsunami NOT expected

- Event details: Preliminary magnitude 6.6 (Mwp) earthquake / Lat: -60.002, Lon: -61.701 at 2025-10-16T01:42:33Z
October 16, 2025 at 1:56 AM
#Earthquake
M6.6 earthquake DRAKE PASSAGE 18:42PDT Oct 15 Depth 10km: Tsunami NOT expected

- Event details: Preliminary magnitude 6.6 (Mwp) earthquake / Lat: -60.002, Lon: -61.701 at 2025-10-16T01:42:33Z
October 16, 2025 at 1:55 AM
#Earthquake
M7.6 earthquake DRAKE PASSAGE 13:29PDT Oct 10 Depth 14km: Tsunami possible

Tsunami Warning, Watch, and/or Advisory Bulletin issued by Pacific Tsunami Warning Center (PTWC) to its US and international AOR for confirmed or p...
October 10, 2025 at 10:21 PM
#Earthquake
M7.8 earthquake DRAKE PASSAGE 13:29PDT Oct 10 Depth 14km: Tsunami NOT expected

Tsunami Info Bulletin for large earthquakes in the Gulf of Mexico, Caribbean and Atlantic areas of which magnitudes could affect the San Juan and Caribbean areas.
October 10, 2025 at 8:54 PM
#Earthquake
M7.8 earthquake DRAKE PASSAGE 13:29PDT Oct 10 Depth 14km: Tsunami possible

Tsunami Warning, Watch, and/or Advisory Bulletin issued by Pacific Tsunami Warning Center (PTWC) to its US and international AOR for confirmed or p...
October 10, 2025 at 8:50 PM
#Earthquake
M7.8 earthquake DRAKE PASSAGE 13:29PDT Oct 10 Depth 14km: Tsunami NOT expected

- Event details: Preliminary magnitude 7.8 (Mwp) earthquake / Lat: -60.257, Lon: -61.921 at 2025-10-10T20:29:22Z
October 10, 2025 at 8:43 PM
#Earthquake
M7.8 earthquake DRAKE PASSAGE 13:29PDT Oct 10 Depth 14km: Tsunami NOT expected

- Event details: Preliminary magnitude 7.8 (Mwp) earthquake / Lat: -60.257, Lon: -61.921 at 2025-10-10T20:29:22Z
October 10, 2025 at 8:42 PM
#Earthquake
M7.8 earthquake DRAKE PASSAGE 13:29PDT Oct 10 Depth 10km: Tsunami NOT expected

Tsunami Info Bulletin for large earthquakes in the Pacific Basin that are evaluated not to have destructive teletsunamigenic potential, or for large earthquakes with t...
October 10, 2025 at 8:41 PM
#Earthquake
M6.9 earthquake MINDANAO PHILIPPINES 04:12PDT Oct 10 Depth 10km: Tsunami NOT expected

- Event details: Preliminary magnitude 6.9 (Mwp) earthquake / Lat: 7.292, Lon: 126.790 at 2025-10-10T11:12:03Z
October 10, 2025 at 11:25 AM
#Earthquake
M6.9 earthquake MINDANAO PHILIPPINES 04:12PDT Oct 10 Depth 10km: Tsunami NOT expected

Tsunami Info Bulletin issued by PTWC to its US and international AOR for large earthquakes in the Pacific Basin that are evaluated not to have dest...
October 10, 2025 at 11:24 AM
#Earthquake
M7.4 earthquake MINDANAO PHILIPPINES 18:43PDT Oct 9 Depth 23km: Tsunami possible

Tsunami Warning, Watch, and/or Advisory Bulletin issued by Pacific Tsunami Warning Center (PTWC) to its US and international AOR for conf...
October 10, 2025 at 3:20 AM
#Earthquake
M7.4 earthquake MINDANAO PHILIPPINES 18:43PDT Oct 9 Depth 23km: Tsunami possible

Tsunami Warning, Watch, and/or Advisory Bulletin issued by Pacific Tsunami Warning Center (PTWC) to its US and international AOR for confirmed or potentially destructi...
October 10, 2025 at 3:20 AM
#Earthquake
M7.4 earthquake MINDANAO PHILIPPINES 18:43PDT Oct 9 Depth 23km: Tsunami possible

Tsunami Warning, Watch, and/or Advisory Bulletin issued by Pacific Tsunami Warning Center (PTWC) to its US and international AOR for conf...
October 10, 2025 at 2:17 AM
#Earthquake
M7.4 earthquake MINDANAO PHILIPPINES 18:43PDT Oct 9 Depth 23km: Tsunami possible

Tsunami Warning, Watch, and/or Advisory Bulletin issued by Pacific Tsunami Warning Center (PTWC) to its US and international AOR for confirmed or potentially destructi...
October 10, 2025 at 2:17 AM
#Earthquake
M7.4 earthquake MINDANAO PHILIPPINES 18:43PDT Oct 9 Depth 23km: Tsunami NOT expected

- Event details: Preliminary magnitude 7.4 (Mwp) earthquake / Lat: 7.390, Lon: 126.880 at 2025-10-10T01:43:56Z
October 10, 2025 at 1:57 AM
#Earthquake
M7.4 earthquake MINDANAO PHILIPPINES 18:43PDT Oct 9 Depth 23km: Tsunami NOT expected

Tsunami Info Bulletin for large earthquakes in the Pacific Basin that are evaluated not to have destructive teletsunamigenic potential, or for large earthqua...
October 10, 2025 at 1:56 AM