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
US Coast/AK: @tsunamialertsntwc.bsky.social
Pacific/HI: @tsunamialertsptwc.bsky.social
INTERNET AT WWW.TSUNAMI.GOV.
* AUTHORITATIVE INFORMATION ABOUT THE EARTHQUAKE FROM THE U.S.
GEOLOGICAL SURVEY CAN BE FOUND ON THE INTERNET AT
EARTHQUAKE.USGS.GOV.
* AUTHORITATIVE INFORMATION ABOUT THE EARTHQUAKE FROM THE U.S.
GEOLOGICAL SURVEY CAN BE FOUND ON THE INTERNET AT
EARTHQUAKE.USGS.GOV.
November 9, 2025 at 11:09 PM
INTERNET AT WWW.TSUNAMI.GOV.
* AUTHORITATIVE INFORMATION ABOUT THE EARTHQUAKE FROM THE U.S.
GEOLOGICAL SURVEY CAN BE FOUND ON THE INTERNET AT
EARTHQUAKE.USGS.GOV.
* AUTHORITATIVE INFORMATION ABOUT THE EARTHQUAKE FROM THE U.S.
GEOLOGICAL SURVEY CAN BE FOUND ON THE INTERNET AT
EARTHQUAKE.USGS.GOV.
* DEPTH 63 MILES
* LOCATION VICINITY OF GUAM
NEXT UPDATE AND ADDITIONAL INFORMATION
---
* THIS WILL BE THE ONLY STATEMENT ISSUED FOR THIS EVENT UNLESS
ADDITIONAL DATA ARE RECEIVED OR THE SITUATION CHANGES.
* FURTHER INFORMATION ABOUT THIS EVENT MAY BE FOUND ON THE
* LOCATION VICINITY OF GUAM
NEXT UPDATE AND ADDITIONAL INFORMATION
---
* THIS WILL BE THE ONLY STATEMENT ISSUED FOR THIS EVENT UNLESS
ADDITIONAL DATA ARE RECEIVED OR THE SITUATION CHANGES.
* FURTHER INFORMATION ABOUT THIS EVENT MAY BE FOUND ON THE
November 9, 2025 at 11:09 PM
* DEPTH 63 MILES
* LOCATION VICINITY OF GUAM
NEXT UPDATE AND ADDITIONAL INFORMATION
---
* THIS WILL BE THE ONLY STATEMENT ISSUED FOR THIS EVENT UNLESS
ADDITIONAL DATA ARE RECEIVED OR THE SITUATION CHANGES.
* FURTHER INFORMATION ABOUT THIS EVENT MAY BE FOUND ON THE
* LOCATION VICINITY OF GUAM
NEXT UPDATE AND ADDITIONAL INFORMATION
---
* THIS WILL BE THE ONLY STATEMENT ISSUED FOR THIS EVENT UNLESS
ADDITIONAL DATA ARE RECEIVED OR THE SITUATION CHANGES.
* FURTHER INFORMATION ABOUT THIS EVENT MAY BE FOUND ON THE
* SOME AREAS MAY HAVE EXPERIENCED SHAKING.
RECOMMENDED ACTIONS
---
* NO ACTION IS REQUIRED.
POTENTIAL IMPACTS
---
* NO TSUNAMI IMPACTS ARE EXPECTED.
PRELIMINARY EARTHQUAKE PARAMETERS -USGS-
---
* MAGNITUDE 5.5
* ORIGIN TIME 854 AM CHST NOV 10 2025
* COORDINATES 13.6 NORTH 145.0 EAST
RECOMMENDED ACTIONS
---
* NO ACTION IS REQUIRED.
POTENTIAL IMPACTS
---
* NO TSUNAMI IMPACTS ARE EXPECTED.
PRELIMINARY EARTHQUAKE PARAMETERS -USGS-
---
* MAGNITUDE 5.5
* ORIGIN TIME 854 AM CHST NOV 10 2025
* COORDINATES 13.6 NORTH 145.0 EAST
November 9, 2025 at 11:09 PM
* SOME AREAS MAY HAVE EXPERIENCED SHAKING.
RECOMMENDED ACTIONS
---
* NO ACTION IS REQUIRED.
POTENTIAL IMPACTS
---
* NO TSUNAMI IMPACTS ARE EXPECTED.
PRELIMINARY EARTHQUAKE PARAMETERS -USGS-
---
* MAGNITUDE 5.5
* ORIGIN TIME 854 AM CHST NOV 10 2025
* COORDINATES 13.6 NORTH 145.0 EAST
RECOMMENDED ACTIONS
---
* NO ACTION IS REQUIRED.
POTENTIAL IMPACTS
---
* NO TSUNAMI IMPACTS ARE EXPECTED.
PRELIMINARY EARTHQUAKE PARAMETERS -USGS-
---
* MAGNITUDE 5.5
* ORIGIN TIME 854 AM CHST NOV 10 2025
* COORDINATES 13.6 NORTH 145.0 EAST
EVALUATION
---
* AN EARTHQUAKE WITH A PRELIMINARY MAGNITUDE OF 5.5 OCCURRED IN
THE VICINITY OF GUAM AT 854 AM CHST ON MONDAY NOVEMBER 10
2025.
* BASED ON ALL AVAILABLE DATA... THERE IS NO TSUNAMI THREAT TO
GUAM... ROTA... TINIAN OR SAIPAN FROM THIS EARTHQUAKE.
---
* AN EARTHQUAKE WITH A PRELIMINARY MAGNITUDE OF 5.5 OCCURRED IN
THE VICINITY OF GUAM AT 854 AM CHST ON MONDAY NOVEMBER 10
2025.
* BASED ON ALL AVAILABLE DATA... THERE IS NO TSUNAMI THREAT TO
GUAM... ROTA... TINIAN OR SAIPAN FROM THIS EARTHQUAKE.
November 9, 2025 at 11:09 PM
EVALUATION
---
* AN EARTHQUAKE WITH A PRELIMINARY MAGNITUDE OF 5.5 OCCURRED IN
THE VICINITY OF GUAM AT 854 AM CHST ON MONDAY NOVEMBER 10
2025.
* BASED ON ALL AVAILABLE DATA... THERE IS NO TSUNAMI THREAT TO
GUAM... ROTA... TINIAN OR SAIPAN FROM THIS EARTHQUAKE.
---
* AN EARTHQUAKE WITH A PRELIMINARY MAGNITUDE OF 5.5 OCCURRED IN
THE VICINITY OF GUAM AT 854 AM CHST ON MONDAY NOVEMBER 10
2025.
* BASED ON ALL AVAILABLE DATA... THERE IS NO TSUNAMI THREAT TO
GUAM... ROTA... TINIAN OR SAIPAN FROM THIS EARTHQUAKE.
INTERNET AT WWW.TSUNAMI.GOV.
* AUTHORITATIVE INFORMATION ABOUT THE EARTHQUAKE FROM THE U.S.
GEOLOGICAL SURVEY CAN BE FOUND ON THE INTERNET AT
EARTHQUAKE.USGS.GOV.
* AUTHORITATIVE INFORMATION ABOUT THE EARTHQUAKE FROM THE U.S.
GEOLOGICAL SURVEY CAN BE FOUND ON THE INTERNET AT
EARTHQUAKE.USGS.GOV.
November 9, 2025 at 8:17 AM
INTERNET AT WWW.TSUNAMI.GOV.
* AUTHORITATIVE INFORMATION ABOUT THE EARTHQUAKE FROM THE U.S.
GEOLOGICAL SURVEY CAN BE FOUND ON THE INTERNET AT
EARTHQUAKE.USGS.GOV.
* AUTHORITATIVE INFORMATION ABOUT THE EARTHQUAKE FROM THE U.S.
GEOLOGICAL SURVEY CAN BE FOUND ON THE INTERNET AT
EARTHQUAKE.USGS.GOV.
* LOCATION OFF THE EAST COAST OF HONSHU JAPAN
NEXT UPDATE AND ADDITIONAL INFORMATION
---
* THIS WILL BE THE ONLY STATEMENT ISSUED FOR THIS EVENT UNLESS
ADDITIONAL DATA ARE RECEIVED OR THE SITUATION CHANGES.
* FURTHER INFORMATION ABOUT THIS EVENT MAY BE FOUND ON THE
NEXT UPDATE AND ADDITIONAL INFORMATION
---
* THIS WILL BE THE ONLY STATEMENT ISSUED FOR THIS EVENT UNLESS
ADDITIONAL DATA ARE RECEIVED OR THE SITUATION CHANGES.
* FURTHER INFORMATION ABOUT THIS EVENT MAY BE FOUND ON THE
November 9, 2025 at 8:17 AM
* LOCATION OFF THE EAST COAST OF HONSHU JAPAN
NEXT UPDATE AND ADDITIONAL INFORMATION
---
* THIS WILL BE THE ONLY STATEMENT ISSUED FOR THIS EVENT UNLESS
ADDITIONAL DATA ARE RECEIVED OR THE SITUATION CHANGES.
* FURTHER INFORMATION ABOUT THIS EVENT MAY BE FOUND ON THE
NEXT UPDATE AND ADDITIONAL INFORMATION
---
* THIS WILL BE THE ONLY STATEMENT ISSUED FOR THIS EVENT UNLESS
ADDITIONAL DATA ARE RECEIVED OR THE SITUATION CHANGES.
* FURTHER INFORMATION ABOUT THIS EVENT MAY BE FOUND ON THE
RECOMMENDED ACTIONS
---
* NO ACTION IS REQUIRED.
POTENTIAL IMPACTS
---
* NO TSUNAMI IMPACTS ARE EXPECTED.
PRELIMINARY EARTHQUAKE PARAMETERS
---
* MAGNITUDE 6.7
* ORIGIN TIME 604 PM CHST NOV 09 2025
* COORDINATES 39.4 NORTH 143.5 EAST
* DEPTH 6 MILES
---
* NO ACTION IS REQUIRED.
POTENTIAL IMPACTS
---
* NO TSUNAMI IMPACTS ARE EXPECTED.
PRELIMINARY EARTHQUAKE PARAMETERS
---
* MAGNITUDE 6.7
* ORIGIN TIME 604 PM CHST NOV 09 2025
* COORDINATES 39.4 NORTH 143.5 EAST
* DEPTH 6 MILES
November 9, 2025 at 8:17 AM
RECOMMENDED ACTIONS
---
* NO ACTION IS REQUIRED.
POTENTIAL IMPACTS
---
* NO TSUNAMI IMPACTS ARE EXPECTED.
PRELIMINARY EARTHQUAKE PARAMETERS
---
* MAGNITUDE 6.7
* ORIGIN TIME 604 PM CHST NOV 09 2025
* COORDINATES 39.4 NORTH 143.5 EAST
* DEPTH 6 MILES
---
* NO ACTION IS REQUIRED.
POTENTIAL IMPACTS
---
* NO TSUNAMI IMPACTS ARE EXPECTED.
PRELIMINARY EARTHQUAKE PARAMETERS
---
* MAGNITUDE 6.7
* ORIGIN TIME 604 PM CHST NOV 09 2025
* COORDINATES 39.4 NORTH 143.5 EAST
* DEPTH 6 MILES
EVALUATION
---
* AN EARTHQUAKE WITH A PRELIMINARY MAGNITUDE OF 6.7 OCCURRED
OFF THE EAST COAST OF HONSHU, JAPAN AT 604 PM CHST ON SUNDAY
NOVEMBER 9 2025.
* BASED ON ALL AVAILABLE DATA... THERE IS NO TSUNAMI THREAT TO
GUAM... ROTA... TINIAN OR SAIPAN FROM THIS EARTHQUAKE.
---
* AN EARTHQUAKE WITH A PRELIMINARY MAGNITUDE OF 6.7 OCCURRED
OFF THE EAST COAST OF HONSHU, JAPAN AT 604 PM CHST ON SUNDAY
NOVEMBER 9 2025.
* BASED ON ALL AVAILABLE DATA... THERE IS NO TSUNAMI THREAT TO
GUAM... ROTA... TINIAN OR SAIPAN FROM THIS EARTHQUAKE.
November 9, 2025 at 8:17 AM
EVALUATION
---
* AN EARTHQUAKE WITH A PRELIMINARY MAGNITUDE OF 6.7 OCCURRED
OFF THE EAST COAST OF HONSHU, JAPAN AT 604 PM CHST ON SUNDAY
NOVEMBER 9 2025.
* BASED ON ALL AVAILABLE DATA... THERE IS NO TSUNAMI THREAT TO
GUAM... ROTA... TINIAN OR SAIPAN FROM THIS EARTHQUAKE.
---
* AN EARTHQUAKE WITH A PRELIMINARY MAGNITUDE OF 6.7 OCCURRED
OFF THE EAST COAST OF HONSHU, JAPAN AT 604 PM CHST ON SUNDAY
NOVEMBER 9 2025.
* BASED ON ALL AVAILABLE DATA... THERE IS NO TSUNAMI THREAT TO
GUAM... ROTA... TINIAN OR SAIPAN FROM THIS EARTHQUAKE.
* COASTAL REGIONS OF CALIFORNIA... OREGON... WASHINGTON...
BRITISH COLUMBIA AND ALASKA SHOULD ONLY REFER TO U.S.
NATIONAL TSUNAMI WARNING CENTER MESSAGES THAT CAN BE FOUND
AT WWW.TSUNAMI.GOV.
BRITISH COLUMBIA AND ALASKA SHOULD ONLY REFER TO U.S.
NATIONAL TSUNAMI WARNING CENTER MESSAGES THAT CAN BE FOUND
AT WWW.TSUNAMI.GOV.
November 9, 2025 at 8:16 AM
* COASTAL REGIONS OF CALIFORNIA... OREGON... WASHINGTON...
BRITISH COLUMBIA AND ALASKA SHOULD ONLY REFER TO U.S.
NATIONAL TSUNAMI WARNING CENTER MESSAGES THAT CAN BE FOUND
AT WWW.TSUNAMI.GOV.
BRITISH COLUMBIA AND ALASKA SHOULD ONLY REFER TO U.S.
NATIONAL TSUNAMI WARNING CENTER MESSAGES THAT CAN BE FOUND
AT WWW.TSUNAMI.GOV.
* FURTHER INFORMATION ABOUT THIS EVENT MAY BE FOUND AT
WWW.TSUNAMI.GOV.
* COASTAL REGIONS OF HAWAII... AMERICAN SAMOA... GUAM... AND
CNMI SHOULD REFER TO PACIFIC TSUNAMI WARNING CENTER MESSAGES
SPECIFICALLY FOR THOSE PLACES THAT CAN BE FOUND AT
WWW.TSUNAMI.GOV.
WWW.TSUNAMI.GOV.
* COASTAL REGIONS OF HAWAII... AMERICAN SAMOA... GUAM... AND
CNMI SHOULD REFER TO PACIFIC TSUNAMI WARNING CENTER MESSAGES
SPECIFICALLY FOR THOSE PLACES THAT CAN BE FOUND AT
WWW.TSUNAMI.GOV.
November 9, 2025 at 8:16 AM
* FURTHER INFORMATION ABOUT THIS EVENT MAY BE FOUND AT
WWW.TSUNAMI.GOV.
* COASTAL REGIONS OF HAWAII... AMERICAN SAMOA... GUAM... AND
CNMI SHOULD REFER TO PACIFIC TSUNAMI WARNING CENTER MESSAGES
SPECIFICALLY FOR THOSE PLACES THAT CAN BE FOUND AT
WWW.TSUNAMI.GOV.
WWW.TSUNAMI.GOV.
* COASTAL REGIONS OF HAWAII... AMERICAN SAMOA... GUAM... AND
CNMI SHOULD REFER TO PACIFIC TSUNAMI WARNING CENTER MESSAGES
SPECIFICALLY FOR THOSE PLACES THAT CAN BE FOUND AT
WWW.TSUNAMI.GOV.
* THIS WILL BE THE ONLY STATEMENT ISSUED FOR THIS EVENT UNLESS
ADDITIONAL DATA ARE RECEIVED OR THE SITUATION CHANGES.
* AUTHORITATIVE INFORMATION ABOUT THE EARTHQUAKE FROM THE U.S.
GEOLOGICAL SURVEY CAN BE FOUND ON THE INTERNET AT
EARTHQUAKE.USGS.GOV.
ADDITIONAL DATA ARE RECEIVED OR THE SITUATION CHANGES.
* AUTHORITATIVE INFORMATION ABOUT THE EARTHQUAKE FROM THE U.S.
GEOLOGICAL SURVEY CAN BE FOUND ON THE INTERNET AT
EARTHQUAKE.USGS.GOV.
November 9, 2025 at 8:16 AM
* THIS WILL BE THE ONLY STATEMENT ISSUED FOR THIS EVENT UNLESS
ADDITIONAL DATA ARE RECEIVED OR THE SITUATION CHANGES.
* AUTHORITATIVE INFORMATION ABOUT THE EARTHQUAKE FROM THE U.S.
GEOLOGICAL SURVEY CAN BE FOUND ON THE INTERNET AT
EARTHQUAKE.USGS.GOV.
ADDITIONAL DATA ARE RECEIVED OR THE SITUATION CHANGES.
* AUTHORITATIVE INFORMATION ABOUT THE EARTHQUAKE FROM THE U.S.
GEOLOGICAL SURVEY CAN BE FOUND ON THE INTERNET AT
EARTHQUAKE.USGS.GOV.
OFF THE EAST COAST OF HONSHU, JAPAN AT 0804 UTC ON SUNDAY
NOVEMBER 9 2025.
* BASED ON ALL AVAILABLE DATA... THERE IS NO TSUNAMI THREAT
FROM THIS EARTHQUAKE.
RECOMMENDED ACTIONS
---
* NO ACTION IS REQUIRED.
NEXT UPDATE AND ADDITIONAL INFORMATION
---
NOVEMBER 9 2025.
* BASED ON ALL AVAILABLE DATA... THERE IS NO TSUNAMI THREAT
FROM THIS EARTHQUAKE.
RECOMMENDED ACTIONS
---
* NO ACTION IS REQUIRED.
NEXT UPDATE AND ADDITIONAL INFORMATION
---
November 9, 2025 at 8:16 AM
OFF THE EAST COAST OF HONSHU, JAPAN AT 0804 UTC ON SUNDAY
NOVEMBER 9 2025.
* BASED ON ALL AVAILABLE DATA... THERE IS NO TSUNAMI THREAT
FROM THIS EARTHQUAKE.
RECOMMENDED ACTIONS
---
* NO ACTION IS REQUIRED.
NEXT UPDATE AND ADDITIONAL INFORMATION
---
NOVEMBER 9 2025.
* BASED ON ALL AVAILABLE DATA... THERE IS NO TSUNAMI THREAT
FROM THIS EARTHQUAKE.
RECOMMENDED ACTIONS
---
* NO ACTION IS REQUIRED.
NEXT UPDATE AND ADDITIONAL INFORMATION
---
are evaluated not to have destructive teletsunamigenic potential, or for large earthquakes with tsunamigenic potential located in the Pacific region but outside the Pacific Basin.
EVALUATION
---
* AN EARTHQUAKE WITH A PRELIMINARY MAGNITUDE OF 6.7 OCCURRED
EVALUATION
---
* AN EARTHQUAKE WITH A PRELIMINARY MAGNITUDE OF 6.7 OCCURRED
November 9, 2025 at 8:16 AM
are evaluated not to have destructive teletsunamigenic potential, or for large earthquakes with tsunamigenic potential located in the Pacific region but outside the Pacific Basin.
EVALUATION
---
* AN EARTHQUAKE WITH A PRELIMINARY MAGNITUDE OF 6.7 OCCURRED
EVALUATION
---
* AN EARTHQUAKE WITH A PRELIMINARY MAGNITUDE OF 6.7 OCCURRED
INTERNET AT WWW.TSUNAMI.GOV.
* AUTHORITATIVE INFORMATION ABOUT THE EARTHQUAKE FROM THE U.S.
GEOLOGICAL SURVEY CAN BE FOUND ON THE INTERNET AT
EARTHQUAKE.USGS.GOV.
* AUTHORITATIVE INFORMATION ABOUT THE EARTHQUAKE FROM THE U.S.
GEOLOGICAL SURVEY CAN BE FOUND ON THE INTERNET AT
EARTHQUAKE.USGS.GOV.
November 4, 2025 at 7:51 AM
INTERNET AT WWW.TSUNAMI.GOV.
* AUTHORITATIVE INFORMATION ABOUT THE EARTHQUAKE FROM THE U.S.
GEOLOGICAL SURVEY CAN BE FOUND ON THE INTERNET AT
EARTHQUAKE.USGS.GOV.
* AUTHORITATIVE INFORMATION ABOUT THE EARTHQUAKE FROM THE U.S.
GEOLOGICAL SURVEY CAN BE FOUND ON THE INTERNET AT
EARTHQUAKE.USGS.GOV.
* DEPTH 67 MILES
* LOCATION ABOUT 102 MILES SOUTHWEST OF GUAM
NEXT UPDATE AND ADDITIONAL INFORMATION
---
* THIS WILL BE THE ONLY STATEMENT ISSUED FOR THIS EVENT UNLESS
ADDITIONAL DATA ARE RECEIVED OR THE SITUATION CHANGES.
* FURTHER INFORMATION ABOUT THIS EVENT MAY BE FOUND ON THE
* LOCATION ABOUT 102 MILES SOUTHWEST OF GUAM
NEXT UPDATE AND ADDITIONAL INFORMATION
---
* THIS WILL BE THE ONLY STATEMENT ISSUED FOR THIS EVENT UNLESS
ADDITIONAL DATA ARE RECEIVED OR THE SITUATION CHANGES.
* FURTHER INFORMATION ABOUT THIS EVENT MAY BE FOUND ON THE
November 4, 2025 at 7:51 AM
* DEPTH 67 MILES
* LOCATION ABOUT 102 MILES SOUTHWEST OF GUAM
NEXT UPDATE AND ADDITIONAL INFORMATION
---
* THIS WILL BE THE ONLY STATEMENT ISSUED FOR THIS EVENT UNLESS
ADDITIONAL DATA ARE RECEIVED OR THE SITUATION CHANGES.
* FURTHER INFORMATION ABOUT THIS EVENT MAY BE FOUND ON THE
* LOCATION ABOUT 102 MILES SOUTHWEST OF GUAM
NEXT UPDATE AND ADDITIONAL INFORMATION
---
* THIS WILL BE THE ONLY STATEMENT ISSUED FOR THIS EVENT UNLESS
ADDITIONAL DATA ARE RECEIVED OR THE SITUATION CHANGES.
* FURTHER INFORMATION ABOUT THIS EVENT MAY BE FOUND ON THE
* SOME AREAS MAY HAVE EXPERIENCED SHAKING.
RECOMMENDED ACTIONS
---
* NO ACTION IS REQUIRED.
POTENTIAL IMPACTS
---
* NO TSUNAMI IMPACTS ARE EXPECTED.
PRELIMINARY EARTHQUAKE PARAMETERS
---
* MAGNITUDE 5.8
* ORIGIN TIME 537 PM CHST NOV 04 2025
* COORDINATES 12.4 NORTH 143.4 EAST
RECOMMENDED ACTIONS
---
* NO ACTION IS REQUIRED.
POTENTIAL IMPACTS
---
* NO TSUNAMI IMPACTS ARE EXPECTED.
PRELIMINARY EARTHQUAKE PARAMETERS
---
* MAGNITUDE 5.8
* ORIGIN TIME 537 PM CHST NOV 04 2025
* COORDINATES 12.4 NORTH 143.4 EAST
November 4, 2025 at 7:51 AM
* SOME AREAS MAY HAVE EXPERIENCED SHAKING.
RECOMMENDED ACTIONS
---
* NO ACTION IS REQUIRED.
POTENTIAL IMPACTS
---
* NO TSUNAMI IMPACTS ARE EXPECTED.
PRELIMINARY EARTHQUAKE PARAMETERS
---
* MAGNITUDE 5.8
* ORIGIN TIME 537 PM CHST NOV 04 2025
* COORDINATES 12.4 NORTH 143.4 EAST
RECOMMENDED ACTIONS
---
* NO ACTION IS REQUIRED.
POTENTIAL IMPACTS
---
* NO TSUNAMI IMPACTS ARE EXPECTED.
PRELIMINARY EARTHQUAKE PARAMETERS
---
* MAGNITUDE 5.8
* ORIGIN TIME 537 PM CHST NOV 04 2025
* COORDINATES 12.4 NORTH 143.4 EAST
EVALUATION
---
* AN EARTHQUAKE WITH A PRELIMINARY MAGNITUDE OF 5.8 OCCURRED
ABOUT 102 MILES SOUTHWEST OF GUAM AT 537 PM CHST ON TUESDAY
NOVEMBER 4 2025.
* BASED ON ALL AVAILABLE DATA... THERE IS NO TSUNAMI THREAT TO
GUAM... ROTA... TINIAN OR SAIPAN FROM THIS EARTHQUAKE.
---
* AN EARTHQUAKE WITH A PRELIMINARY MAGNITUDE OF 5.8 OCCURRED
ABOUT 102 MILES SOUTHWEST OF GUAM AT 537 PM CHST ON TUESDAY
NOVEMBER 4 2025.
* BASED ON ALL AVAILABLE DATA... THERE IS NO TSUNAMI THREAT TO
GUAM... ROTA... TINIAN OR SAIPAN FROM THIS EARTHQUAKE.
November 4, 2025 at 7:51 AM
EVALUATION
---
* AN EARTHQUAKE WITH A PRELIMINARY MAGNITUDE OF 5.8 OCCURRED
ABOUT 102 MILES SOUTHWEST OF GUAM AT 537 PM CHST ON TUESDAY
NOVEMBER 4 2025.
* BASED ON ALL AVAILABLE DATA... THERE IS NO TSUNAMI THREAT TO
GUAM... ROTA... TINIAN OR SAIPAN FROM THIS EARTHQUAKE.
---
* AN EARTHQUAKE WITH A PRELIMINARY MAGNITUDE OF 5.8 OCCURRED
ABOUT 102 MILES SOUTHWEST OF GUAM AT 537 PM CHST ON TUESDAY
NOVEMBER 4 2025.
* BASED ON ALL AVAILABLE DATA... THERE IS NO TSUNAMI THREAT TO
GUAM... ROTA... TINIAN OR SAIPAN FROM THIS EARTHQUAKE.
* COASTAL REGIONS OF THE US GULF COAST... US EAST COAST... AND
THE MARITIME PROVINCES OF CANADA SHOULD REFER TO U.S.
NATIONAL TSUNAMI WARNING CENTER MESSAGES THAT CAN BE FOUND
AT WWW.TSUNAMI.GOV.
THE MARITIME PROVINCES OF CANADA SHOULD REFER TO U.S.
NATIONAL TSUNAMI WARNING CENTER MESSAGES THAT CAN BE FOUND
AT WWW.TSUNAMI.GOV.
October 27, 2025 at 1:18 PM
* COASTAL REGIONS OF THE US GULF COAST... US EAST COAST... AND
THE MARITIME PROVINCES OF CANADA SHOULD REFER TO U.S.
NATIONAL TSUNAMI WARNING CENTER MESSAGES THAT CAN BE FOUND
AT WWW.TSUNAMI.GOV.
THE MARITIME PROVINCES OF CANADA SHOULD REFER TO U.S.
NATIONAL TSUNAMI WARNING CENTER MESSAGES THAT CAN BE FOUND
AT WWW.TSUNAMI.GOV.
ADDITIONAL DATA ARE RECEIVED OR THE SITUATION CHANGES.
* AUTHORITATIVE INFORMATION ABOUT THE EARTHQUAKE FROM THE U.S.
GEOLOGICAL SURVEY CAN BE FOUND ON THE INTERNET AT
EARTHQUAKE.USGS.GOV.
* FURTHER INFORMATION ABOUT THIS EVENT MAY BE FOUND AT
WWW.TSUNAMI.GOV.
* AUTHORITATIVE INFORMATION ABOUT THE EARTHQUAKE FROM THE U.S.
GEOLOGICAL SURVEY CAN BE FOUND ON THE INTERNET AT
EARTHQUAKE.USGS.GOV.
* FURTHER INFORMATION ABOUT THIS EVENT MAY BE FOUND AT
WWW.TSUNAMI.GOV.
October 27, 2025 at 1:18 PM
ADDITIONAL DATA ARE RECEIVED OR THE SITUATION CHANGES.
* AUTHORITATIVE INFORMATION ABOUT THE EARTHQUAKE FROM THE U.S.
GEOLOGICAL SURVEY CAN BE FOUND ON THE INTERNET AT
EARTHQUAKE.USGS.GOV.
* FURTHER INFORMATION ABOUT THIS EVENT MAY BE FOUND AT
WWW.TSUNAMI.GOV.
* AUTHORITATIVE INFORMATION ABOUT THE EARTHQUAKE FROM THE U.S.
GEOLOGICAL SURVEY CAN BE FOUND ON THE INTERNET AT
EARTHQUAKE.USGS.GOV.
* FURTHER INFORMATION ABOUT THIS EVENT MAY BE FOUND AT
WWW.TSUNAMI.GOV.
VERY SMALL POSSIBILITY OF TSUNAMI WAVES ALONG COASTS LOCATED
NEAREST THE EPICENTER.
RECOMMENDED ACTIONS
---
* NO ACTION IS REQUIRED.
NEXT UPDATE AND ADDITIONAL INFORMATION
---
* THIS WILL BE THE ONLY STATEMENT ISSUED FOR THIS EVENT UNLESS
NEAREST THE EPICENTER.
RECOMMENDED ACTIONS
---
* NO ACTION IS REQUIRED.
NEXT UPDATE AND ADDITIONAL INFORMATION
---
* THIS WILL BE THE ONLY STATEMENT ISSUED FOR THIS EVENT UNLESS
October 27, 2025 at 1:18 PM
VERY SMALL POSSIBILITY OF TSUNAMI WAVES ALONG COASTS LOCATED
NEAREST THE EPICENTER.
RECOMMENDED ACTIONS
---
* NO ACTION IS REQUIRED.
NEXT UPDATE AND ADDITIONAL INFORMATION
---
* THIS WILL BE THE ONLY STATEMENT ISSUED FOR THIS EVENT UNLESS
NEAREST THE EPICENTER.
RECOMMENDED ACTIONS
---
* NO ACTION IS REQUIRED.
NEXT UPDATE AND ADDITIONAL INFORMATION
---
* THIS WILL BE THE ONLY STATEMENT ISSUED FOR THIS EVENT UNLESS
EVALUATION
---
* AN EARTHQUAKE WITH A PRELIMINARY MAGNITUDE OF 6.1 OCCURRED IN
THE LEEWARD ISLANDS AT 1255 UTC ON MONDAY OCTOBER 27 2025.
* BASED ON ALL AVAILABLE DATA... THERE IS NO SIGNIFICANT
TSUNAMI THREAT FROM THIS EARTHQUAKE. HOWEVER... THERE IS A
---
* AN EARTHQUAKE WITH A PRELIMINARY MAGNITUDE OF 6.1 OCCURRED IN
THE LEEWARD ISLANDS AT 1255 UTC ON MONDAY OCTOBER 27 2025.
* BASED ON ALL AVAILABLE DATA... THERE IS NO SIGNIFICANT
TSUNAMI THREAT FROM THIS EARTHQUAKE. HOWEVER... THERE IS A
October 27, 2025 at 1:18 PM
EVALUATION
---
* AN EARTHQUAKE WITH A PRELIMINARY MAGNITUDE OF 6.1 OCCURRED IN
THE LEEWARD ISLANDS AT 1255 UTC ON MONDAY OCTOBER 27 2025.
* BASED ON ALL AVAILABLE DATA... THERE IS NO SIGNIFICANT
TSUNAMI THREAT FROM THIS EARTHQUAKE. HOWEVER... THERE IS A
---
* AN EARTHQUAKE WITH A PRELIMINARY MAGNITUDE OF 6.1 OCCURRED IN
THE LEEWARD ISLANDS AT 1255 UTC ON MONDAY OCTOBER 27 2025.
* BASED ON ALL AVAILABLE DATA... THERE IS NO SIGNIFICANT
TSUNAMI THREAT FROM THIS EARTHQUAKE. HOWEVER... THERE IS A