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Tsunami Alerts (NTWC) from US National Tsunami Warning Center @tsunamialertsntwc.bsky.social · 11h

message issued for this event unless additional information
becomes available.

Tsunami Alerts (NTWC) from US National Tsunami Warning Center @tsunamialertsntwc.bsky.social · 11h

ADDITIONAL INFORMATION AND NEXT UPDATE
---
* Further information will be issued by the United States
Geological Survey (earthquake.usgs.gov) or the appropriate
regional seismic network.

* This will be the only U.S. National Tsunami Warning Center

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Tsunami Alerts (NTWC) from US National Tsunami Warning Center @tsunamialertsntwc.bsky.social · 11h

assessment of the earthquake and changes may occur.

* Magnitude 7.8
* Origin Time 1229 AKDT Oct 10 2025
1329 PDT Oct 10 2025
2029 UTC Oct 10 2025
* Coordinates 60.3 South 61.9 West
* Depth 6 miles
* Location near the Drake Passage, south of South America

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Tsunami Alerts (NTWC) from US National Tsunami Warning Center @tsunamialertsntwc.bsky.social · 11h

EVALUATION
---
* There is no tsunami danger for the U.S. West Coast, British Columbia, or Alaska.

* Earthquakes of this size are known to generate tsunamis dangerous to shorelines near the source.

PRELIMINARY EARTHQUAKE PARAMETERS
---

* The following parameters are based on a rapid preliminary

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Tsunami Alerts (NTWC) from US National Tsunami Warning Center @tsunamialertsntwc.bsky.social · 11h

#Earthquake
M7.8 earthquake near the Drake Passage, south of South America 13:29PDT Oct 10 Depth 10km

An earthquake has occurred; a tsunami is not expected.

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Tsunami Alerts (NTWC) from US National Tsunami Warning Center @tsunamialertsntwc.bsky.social · 11h

* Caribbean coastal regions should refer to the Pacific
Tsunami Warning Center messages at tsunami.gov.

* This will be the only U.S. National Tsunami Warning Center
message issued for this event unless additional information
becomes available.

Tsunami Alerts (NTWC) from US National Tsunami Warning Center @tsunamialertsntwc.bsky.social · 11h

0429 AST Oct 10 2025
2029 UTC Oct 10 2025
* Coordinates 60.3 South 61.9 West
* Depth 6 miles
* Location near the Drake Passage, south of South America

ADDITIONAL INFORMATION AND NEXT UPDATE
---
* Refer to the internet site tsunami.gov for more information.

1

Tsunami Alerts (NTWC) from US National Tsunami Warning Center @tsunamialertsntwc.bsky.social · 11h

* An earthquake has occurred with parameters listed below.

PRELIMINARY EARTHQUAKE PARAMETERS
---

* The following parameters are based on a rapid preliminary
assessment of the earthquake and changes may occur.

* Magnitude 7.8
* Origin Time 1629 EDT Oct 10 2025
1529 CDT Oct 10 2025

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Tsunami Alerts (NTWC) from US National Tsunami Warning Center @tsunamialertsntwc.bsky.social · 11h

more Info.

EVALUATION
---
* There is no tsunami danger for the U.S. east coast, the Gulf of
America states, or the eastern coast of Canada.

* Earthquakes of this size are known to generate tsunamis
dangerous to shorelines near the source.

1

Tsunami Alerts (NTWC) from US National Tsunami Warning Center @tsunamialertsntwc.bsky.social · 11h

tes, or the eastern coast of Canada. Earthquakes of this size are known to generate tsunamis dangerous to shorelines near the source. This will be the only U.S. National Tsunami Warning Center message for this event unless additional Info becomes available. Refer to the internet site tsunami.gov for

1

Tsunami Alerts (NTWC) from US National Tsunami Warning Center @tsunamialertsntwc.bsky.social · 11h

#Earthquake
M7.8 earthquake near the Drake Passage, south of South America 13:29PDT Oct 10 Depth 10km

Tsunami NOT expected for the US east coast, the Gulf of America sta...

1 2 3

Tsunami Alerts (NTWC) from US National Tsunami Warning Center @tsunamialertsntwc.bsky.social · 21h

British Columbia, and Alaska should refer to the Pacific Tsunami
Warning Center messages at tsunami.gov.

* This will be the only U.S. National Tsunami Warning Center
message issued for this event unless additional information
becomes available.

Tsunami Alerts (NTWC) from US National Tsunami Warning Center @tsunamialertsntwc.bsky.social · 21h

* Depth 6 miles
* Location in Mindanao, Philippine Islands

ADDITIONAL INFORMATION AND NEXT UPDATE
---
* Refer to the internet site tsunami.gov for more information.

* Pacific coastal regions outside California, Oregon, Washington,

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Tsunami Alerts (NTWC) from US National Tsunami Warning Center @tsunamialertsntwc.bsky.social · 21h

PRELIMINARY EARTHQUAKE PARAMETERS
---

* The following parameters are based on a rapid preliminary
assessment of the earthquake and changes may occur.

* Magnitude 6.9
* Origin Time 0312 AKDT Oct 10 2025
0412 PDT Oct 10 2025
1112 UTC Oct 10 2025
* Coordinates 7.3 North 126.8 East

1

Tsunami Alerts (NTWC) from US National Tsunami Warning Center @tsunamialertsntwc.bsky.social · 21h

EVALUATION
---
* There is no tsunami danger for the U.S. West Coast, British
Columbia, or Alaska.

* Based on earthquake information and historic tsunami records,
the earthquake is not expected to generate a tsunami.

* An earthquake has occurred with parameters listed below.

1

Tsunami Alerts (NTWC) from US National Tsunami Warning Center @tsunamialertsntwc.bsky.social · 21h

. Based on earthquake Info and historic tsunami records, the earthquake is not expected to generate a tsunami. This will be the only U.S. National Tsunami Warning Center message for this event unless additional Info becomes available. Refer to the internet site tsunami.gov for more Info.

1

Tsunami Alerts (NTWC) from US National Tsunami Warning Center @tsunamialertsntwc.bsky.social · 21h

#Earthquake
M6.9 earthquake in Mindanao, Philippine Islands 04:12PDT Oct 10 Depth 10km

Tsunami NOT expected for the US West Coast, British Columbia, or Alaska...

1 3 3

Tsunami Alerts (NTWC) from US National Tsunami Warning Center @tsunamialertsntwc.bsky.social · 1d

British Columbia, and Alaska should refer to the Pacific Tsunami
Warning Center messages at tsunami.gov.

* This will be the only U.S. National Tsunami Warning Center
message issued for this event unless additional information
becomes available.

Tsunami Alerts (NTWC) from US National Tsunami Warning Center @tsunamialertsntwc.bsky.social · 1d

* Depth 14 miles
* Location in Mindanao, Philippine Islands

ADDITIONAL INFORMATION AND NEXT UPDATE
---
* Refer to the internet site tsunami.gov for more information.

* Pacific coastal regions outside California, Oregon, Washington,

1

Tsunami Alerts (NTWC) from US National Tsunami Warning Center @tsunamialertsntwc.bsky.social · 1d

PRELIMINARY EARTHQUAKE PARAMETERS
---

* The following parameters are based on a rapid preliminary
assessment of the earthquake and changes may occur.

* Magnitude 7.4
* Origin Time 1744 AKDT Oct 09 2025
1844 PDT Oct 09 2025
0144 UTC Oct 10 2025
* Coordinates 7.4 North 126.9 East

1

Tsunami Alerts (NTWC) from US National Tsunami Warning Center @tsunamialertsntwc.bsky.social · 1d

EVALUATION
---
* There is no tsunami danger for the U.S. West Coast, British
Columbia, or Alaska.

* Based on earthquake information and historic tsunami records,
the earthquake is not expected to generate a tsunami.

* An earthquake has occurred with parameters listed below.

1

Tsunami Alerts (NTWC) from US National Tsunami Warning Center @tsunamialertsntwc.bsky.social · 1d

. Based on earthquake Info and historic tsunami records, the earthquake is not expected to generate a tsunami. This will be the only U.S. National Tsunami Warning Center message for this event unless additional Info becomes available. Refer to the internet site tsunami.gov for more Info.

1

Tsunami Alerts (NTWC) from US National Tsunami Warning Center @tsunamialertsntwc.bsky.social · 1d

#Earthquake
M7.4 earthquake in Mindanao, Philippine Islands 18:44PDT Oct 9 Depth 23km

Tsunami NOT expected for the US West Coast, British Columbia, or Alaska...

1 7 7

Tsunami Alerts (NTWC) from US National Tsunami Warning Center @tsunamialertsntwc.bsky.social · 3d

Warning Center messages at tsunami.gov.

* This will be the only U.S. National Tsunami Warning Center
message issued for this event unless additional information
becomes available.

Tsunami Alerts (NTWC) from US National Tsunami Warning Center @tsunamialertsntwc.bsky.social · 3d

* Location in the eastern New Guinea Region, PNG

ADDITIONAL INFORMATION AND NEXT UPDATE
---
* Refer to the internet site tsunami.gov for more information.

* Pacific coastal regions outside California, Oregon, Washington,
British Columbia, and Alaska should refer to the Pacific Tsunami

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