Tsunami Alerts (NTWC) from US National Tsunami Warning Center
@tsunamialertsntwc.bsky.social
Tsunami alerts from the NTWC for the continental U.S. and Canada.
US Coast/AK: @tsunamialertsntwc.bsky.social
Pacific/HI: @tsunamialertsptwc.bsky.social
US Coast/AK: @tsunamialertsntwc.bsky.social
Pacific/HI: @tsunamialertsptwc.bsky.social
Geological Survey (earthquake.usgs.gov) or the appropriate
regional seismic network.
* This will be the only U.S. National Tsunami Warning Center
message issued for this event unless additional information
becomes available.
regional seismic network.
* This will be the only U.S. National Tsunami Warning Center
message issued for this event unless additional information
becomes available.
November 27, 2025 at 9:04 PM
Geological Survey (earthquake.usgs.gov) or the appropriate
regional seismic network.
* This will be the only U.S. National Tsunami Warning Center
message issued for this event unless additional information
becomes available.
regional seismic network.
* This will be the only U.S. National Tsunami Warning Center
message issued for this event unless additional information
becomes available.
2058 UTC Nov 27 2025
* Coordinates 36.7 North 121.7 West
* Depth 1 miles
* Location 15 miles NE of Monterey, California
80 miles SE of San Francisco, California
ADDITIONAL INFORMATION AND NEXT UPDATE
---
* Further information will be issued by the United States
* Coordinates 36.7 North 121.7 West
* Depth 1 miles
* Location 15 miles NE of Monterey, California
80 miles SE of San Francisco, California
ADDITIONAL INFORMATION AND NEXT UPDATE
---
* Further information will be issued by the United States
November 27, 2025 at 9:04 PM
2058 UTC Nov 27 2025
* Coordinates 36.7 North 121.7 West
* Depth 1 miles
* Location 15 miles NE of Monterey, California
80 miles SE of San Francisco, California
ADDITIONAL INFORMATION AND NEXT UPDATE
---
* Further information will be issued by the United States
* Coordinates 36.7 North 121.7 West
* Depth 1 miles
* Location 15 miles NE of Monterey, California
80 miles SE of San Francisco, California
ADDITIONAL INFORMATION AND NEXT UPDATE
---
* Further information will be issued by the United States
EVALUATION
---
* There is NO tsunami danger from this earthquake.
PRELIMINARY EARTHQUAKE PARAMETERS
---
* The following parameters are based on a rapid preliminary
assessment of the earthquake and changes may occur.
* Magnitude 4.1
* Origin Time 1158 AKST Nov 27 2025
1258 PST Nov 27 2025
---
* There is NO tsunami danger from this earthquake.
PRELIMINARY EARTHQUAKE PARAMETERS
---
* The following parameters are based on a rapid preliminary
assessment of the earthquake and changes may occur.
* Magnitude 4.1
* Origin Time 1158 AKST Nov 27 2025
1258 PST Nov 27 2025
November 27, 2025 at 9:04 PM
EVALUATION
---
* There is NO tsunami danger from this earthquake.
PRELIMINARY EARTHQUAKE PARAMETERS
---
* The following parameters are based on a rapid preliminary
assessment of the earthquake and changes may occur.
* Magnitude 4.1
* Origin Time 1158 AKST Nov 27 2025
1258 PST Nov 27 2025
---
* There is NO tsunami danger from this earthquake.
PRELIMINARY EARTHQUAKE PARAMETERS
---
* The following parameters are based on a rapid preliminary
assessment of the earthquake and changes may occur.
* Magnitude 4.1
* Origin Time 1158 AKST Nov 27 2025
1258 PST Nov 27 2025
Geological Survey (earthquake.usgs.gov) or the appropriate
regional seismic network.
* This will be the only U.S. National Tsunami Warning Center
message issued for this event unless additional information
becomes available.
regional seismic network.
* This will be the only U.S. National Tsunami Warning Center
message issued for this event unless additional information
becomes available.
November 27, 2025 at 5:14 PM
Geological Survey (earthquake.usgs.gov) or the appropriate
regional seismic network.
* This will be the only U.S. National Tsunami Warning Center
message issued for this event unless additional information
becomes available.
regional seismic network.
* This will be the only U.S. National Tsunami Warning Center
message issued for this event unless additional information
becomes available.
0911 PST Nov 27 2025
1711 UTC Nov 27 2025
* Coordinates 61.6 North 150.7 West
* Depth 47 miles
* Location 55 miles W of Palmer, Alaska
35 miles NW of Anchorage, Alaska
ADDITIONAL INFORMATION AND NEXT UPDATE
---
* Further information will be issued by the United States
1711 UTC Nov 27 2025
* Coordinates 61.6 North 150.7 West
* Depth 47 miles
* Location 55 miles W of Palmer, Alaska
35 miles NW of Anchorage, Alaska
ADDITIONAL INFORMATION AND NEXT UPDATE
---
* Further information will be issued by the United States
November 27, 2025 at 5:14 PM
0911 PST Nov 27 2025
1711 UTC Nov 27 2025
* Coordinates 61.6 North 150.7 West
* Depth 47 miles
* Location 55 miles W of Palmer, Alaska
35 miles NW of Anchorage, Alaska
ADDITIONAL INFORMATION AND NEXT UPDATE
---
* Further information will be issued by the United States
1711 UTC Nov 27 2025
* Coordinates 61.6 North 150.7 West
* Depth 47 miles
* Location 55 miles W of Palmer, Alaska
35 miles NW of Anchorage, Alaska
ADDITIONAL INFORMATION AND NEXT UPDATE
---
* Further information will be issued by the United States
EVALUATION
---
* An earthquake has occurred; a tsunami is not expected.
PRELIMINARY EARTHQUAKE PARAMETERS
---
* The following parameters are based on a rapid preliminary
assessment of the earthquake and changes may occur.
* Magnitude 5.8
* Origin Time 0811 AKST Nov 27 2025
---
* An earthquake has occurred; a tsunami is not expected.
PRELIMINARY EARTHQUAKE PARAMETERS
---
* The following parameters are based on a rapid preliminary
assessment of the earthquake and changes may occur.
* Magnitude 5.8
* Origin Time 0811 AKST Nov 27 2025
November 27, 2025 at 5:14 PM
EVALUATION
---
* An earthquake has occurred; a tsunami is not expected.
PRELIMINARY EARTHQUAKE PARAMETERS
---
* The following parameters are based on a rapid preliminary
assessment of the earthquake and changes may occur.
* Magnitude 5.8
* Origin Time 0811 AKST Nov 27 2025
---
* An earthquake has occurred; a tsunami is not expected.
PRELIMINARY EARTHQUAKE PARAMETERS
---
* The following parameters are based on a rapid preliminary
assessment of the earthquake and changes may occur.
* Magnitude 5.8
* Origin Time 0811 AKST Nov 27 2025
Geological Survey (earthquake.usgs.gov) or the appropriate
regional seismic network.
* This will be the only U.S. National Tsunami Warning Center
message issued for this event unless additional information
becomes available.
regional seismic network.
* This will be the only U.S. National Tsunami Warning Center
message issued for this event unless additional information
becomes available.
November 26, 2025 at 2:23 PM
Geological Survey (earthquake.usgs.gov) or the appropriate
regional seismic network.
* This will be the only U.S. National Tsunami Warning Center
message issued for this event unless additional information
becomes available.
regional seismic network.
* This will be the only U.S. National Tsunami Warning Center
message issued for this event unless additional information
becomes available.
1417 UTC Nov 26 2025
* Coordinates 36.9 North 121.6 West
* Depth 5 miles
* Location 25 miles NE of Monterey, California
75 miles SE of San Francisco, California
ADDITIONAL INFORMATION AND NEXT UPDATE
---
* Further information will be issued by the United States
* Coordinates 36.9 North 121.6 West
* Depth 5 miles
* Location 25 miles NE of Monterey, California
75 miles SE of San Francisco, California
ADDITIONAL INFORMATION AND NEXT UPDATE
---
* Further information will be issued by the United States
November 26, 2025 at 2:23 PM
1417 UTC Nov 26 2025
* Coordinates 36.9 North 121.6 West
* Depth 5 miles
* Location 25 miles NE of Monterey, California
75 miles SE of San Francisco, California
ADDITIONAL INFORMATION AND NEXT UPDATE
---
* Further information will be issued by the United States
* Coordinates 36.9 North 121.6 West
* Depth 5 miles
* Location 25 miles NE of Monterey, California
75 miles SE of San Francisco, California
ADDITIONAL INFORMATION AND NEXT UPDATE
---
* Further information will be issued by the United States
EVALUATION
---
* There is NO tsunami danger from this earthquake.
PRELIMINARY EARTHQUAKE PARAMETERS
---
* The following parameters are based on a rapid preliminary
assessment of the earthquake and changes may occur.
* Magnitude 4.1
* Origin Time 0517 AKST Nov 26 2025
0617 PST Nov 26 2025
---
* There is NO tsunami danger from this earthquake.
PRELIMINARY EARTHQUAKE PARAMETERS
---
* The following parameters are based on a rapid preliminary
assessment of the earthquake and changes may occur.
* Magnitude 4.1
* Origin Time 0517 AKST Nov 26 2025
0617 PST Nov 26 2025
November 26, 2025 at 2:23 PM
EVALUATION
---
* There is NO tsunami danger from this earthquake.
PRELIMINARY EARTHQUAKE PARAMETERS
---
* The following parameters are based on a rapid preliminary
assessment of the earthquake and changes may occur.
* Magnitude 4.1
* Origin Time 0517 AKST Nov 26 2025
0617 PST Nov 26 2025
---
* There is NO tsunami danger from this earthquake.
PRELIMINARY EARTHQUAKE PARAMETERS
---
* The following parameters are based on a rapid preliminary
assessment of the earthquake and changes may occur.
* Magnitude 4.1
* Origin Time 0517 AKST Nov 26 2025
0617 PST Nov 26 2025
Geological Survey (earthquake.usgs.gov) or the appropriate
regional seismic network.
* This will be the only U.S. National Tsunami Warning Center
message issued for this event unless additional information
becomes available.
regional seismic network.
* This will be the only U.S. National Tsunami Warning Center
message issued for this event unless additional information
becomes available.
November 25, 2025 at 5:21 PM
Geological Survey (earthquake.usgs.gov) or the appropriate
regional seismic network.
* This will be the only U.S. National Tsunami Warning Center
message issued for this event unless additional information
becomes available.
regional seismic network.
* This will be the only U.S. National Tsunami Warning Center
message issued for this event unless additional information
becomes available.
1716 UTC Nov 25 2025
* Coordinates 52.8 North 167.8 West
* Depth 22 miles
* Location 45 miles E of Nikolski, Alaska
385 miles E of Adak, Alaska
ADDITIONAL INFORMATION AND NEXT UPDATE
---
* Further information will be issued by the United States
* Coordinates 52.8 North 167.8 West
* Depth 22 miles
* Location 45 miles E of Nikolski, Alaska
385 miles E of Adak, Alaska
ADDITIONAL INFORMATION AND NEXT UPDATE
---
* Further information will be issued by the United States
November 25, 2025 at 5:21 PM
1716 UTC Nov 25 2025
* Coordinates 52.8 North 167.8 West
* Depth 22 miles
* Location 45 miles E of Nikolski, Alaska
385 miles E of Adak, Alaska
ADDITIONAL INFORMATION AND NEXT UPDATE
---
* Further information will be issued by the United States
* Coordinates 52.8 North 167.8 West
* Depth 22 miles
* Location 45 miles E of Nikolski, Alaska
385 miles E of Adak, Alaska
ADDITIONAL INFORMATION AND NEXT UPDATE
---
* Further information will be issued by the United States
EVALUATION
---
* There is NO tsunami danger from this earthquake.
PRELIMINARY EARTHQUAKE PARAMETERS
---
* The following parameters are based on a rapid preliminary
assessment of the earthquake and changes may occur.
* Magnitude 5.1
* Origin Time 0816 AKST Nov 25 2025
0916 PST Nov 25 2025
---
* There is NO tsunami danger from this earthquake.
PRELIMINARY EARTHQUAKE PARAMETERS
---
* The following parameters are based on a rapid preliminary
assessment of the earthquake and changes may occur.
* Magnitude 5.1
* Origin Time 0816 AKST Nov 25 2025
0916 PST Nov 25 2025
November 25, 2025 at 5:21 PM
EVALUATION
---
* There is NO tsunami danger from this earthquake.
PRELIMINARY EARTHQUAKE PARAMETERS
---
* The following parameters are based on a rapid preliminary
assessment of the earthquake and changes may occur.
* Magnitude 5.1
* Origin Time 0816 AKST Nov 25 2025
0916 PST Nov 25 2025
---
* There is NO tsunami danger from this earthquake.
PRELIMINARY EARTHQUAKE PARAMETERS
---
* The following parameters are based on a rapid preliminary
assessment of the earthquake and changes may occur.
* Magnitude 5.1
* Origin Time 0816 AKST Nov 25 2025
0916 PST Nov 25 2025
Geological Survey (earthquake.usgs.gov) or the appropriate
regional seismic network.
* This will be the only U.S. National Tsunami Warning Center
message issued for this event unless additional information
becomes available.
regional seismic network.
* This will be the only U.S. National Tsunami Warning Center
message issued for this event unless additional information
becomes available.
November 23, 2025 at 8:35 PM
Geological Survey (earthquake.usgs.gov) or the appropriate
regional seismic network.
* This will be the only U.S. National Tsunami Warning Center
message issued for this event unless additional information
becomes available.
regional seismic network.
* This will be the only U.S. National Tsunami Warning Center
message issued for this event unless additional information
becomes available.
2030 UTC Nov 23 2025
* Coordinates 59.3 North 154.5 West
* Depth 104 miles
* Location 40 miles SE of Iliamna, Alaska
205 miles SW of Anchorage, Alaska
ADDITIONAL INFORMATION AND NEXT UPDATE
---
* Further information will be issued by the United States
* Coordinates 59.3 North 154.5 West
* Depth 104 miles
* Location 40 miles SE of Iliamna, Alaska
205 miles SW of Anchorage, Alaska
ADDITIONAL INFORMATION AND NEXT UPDATE
---
* Further information will be issued by the United States
November 23, 2025 at 8:35 PM
2030 UTC Nov 23 2025
* Coordinates 59.3 North 154.5 West
* Depth 104 miles
* Location 40 miles SE of Iliamna, Alaska
205 miles SW of Anchorage, Alaska
ADDITIONAL INFORMATION AND NEXT UPDATE
---
* Further information will be issued by the United States
* Coordinates 59.3 North 154.5 West
* Depth 104 miles
* Location 40 miles SE of Iliamna, Alaska
205 miles SW of Anchorage, Alaska
ADDITIONAL INFORMATION AND NEXT UPDATE
---
* Further information will be issued by the United States
EVALUATION
---
* There is NO tsunami danger from this earthquake.
PRELIMINARY EARTHQUAKE PARAMETERS
---
* The following parameters are based on a rapid preliminary
assessment of the earthquake and changes may occur.
* Magnitude 4.0
* Origin Time 1130 AKST Nov 23 2025
1230 PST Nov 23 2025
---
* There is NO tsunami danger from this earthquake.
PRELIMINARY EARTHQUAKE PARAMETERS
---
* The following parameters are based on a rapid preliminary
assessment of the earthquake and changes may occur.
* Magnitude 4.0
* Origin Time 1130 AKST Nov 23 2025
1230 PST Nov 23 2025
November 23, 2025 at 8:35 PM
EVALUATION
---
* There is NO tsunami danger from this earthquake.
PRELIMINARY EARTHQUAKE PARAMETERS
---
* The following parameters are based on a rapid preliminary
assessment of the earthquake and changes may occur.
* Magnitude 4.0
* Origin Time 1130 AKST Nov 23 2025
1230 PST Nov 23 2025
---
* There is NO tsunami danger from this earthquake.
PRELIMINARY EARTHQUAKE PARAMETERS
---
* The following parameters are based on a rapid preliminary
assessment of the earthquake and changes may occur.
* Magnitude 4.0
* Origin Time 1130 AKST Nov 23 2025
1230 PST Nov 23 2025
Geological Survey (earthquake.usgs.gov) or the appropriate
regional seismic network.
* This will be the only U.S. National Tsunami Warning Center
message issued for this event unless additional information
becomes available.
regional seismic network.
* This will be the only U.S. National Tsunami Warning Center
message issued for this event unless additional information
becomes available.
November 23, 2025 at 8:28 AM
Geological Survey (earthquake.usgs.gov) or the appropriate
regional seismic network.
* This will be the only U.S. National Tsunami Warning Center
message issued for this event unless additional information
becomes available.
regional seismic network.
* This will be the only U.S. National Tsunami Warning Center
message issued for this event unless additional information
becomes available.
0822 UTC Nov 23 2025
* Coordinates 51.5 North 177.1 West
* Depth 22 miles
* Location 135 miles SW of Atka Village, Alaska
35 miles SW of Adak, Alaska
ADDITIONAL INFORMATION AND NEXT UPDATE
---
* Further information will be issued by the United States
* Coordinates 51.5 North 177.1 West
* Depth 22 miles
* Location 135 miles SW of Atka Village, Alaska
35 miles SW of Adak, Alaska
ADDITIONAL INFORMATION AND NEXT UPDATE
---
* Further information will be issued by the United States
November 23, 2025 at 8:28 AM
0822 UTC Nov 23 2025
* Coordinates 51.5 North 177.1 West
* Depth 22 miles
* Location 135 miles SW of Atka Village, Alaska
35 miles SW of Adak, Alaska
ADDITIONAL INFORMATION AND NEXT UPDATE
---
* Further information will be issued by the United States
* Coordinates 51.5 North 177.1 West
* Depth 22 miles
* Location 135 miles SW of Atka Village, Alaska
35 miles SW of Adak, Alaska
ADDITIONAL INFORMATION AND NEXT UPDATE
---
* Further information will be issued by the United States
EVALUATION
---
* There is NO tsunami danger from this earthquake.
PRELIMINARY EARTHQUAKE PARAMETERS
---
* The following parameters are based on a rapid preliminary
assessment of the earthquake and changes may occur.
* Magnitude 5.2
* Origin Time 2322 AKST Nov 22 2025
0022 PST Nov 23 2025
---
* There is NO tsunami danger from this earthquake.
PRELIMINARY EARTHQUAKE PARAMETERS
---
* The following parameters are based on a rapid preliminary
assessment of the earthquake and changes may occur.
* Magnitude 5.2
* Origin Time 2322 AKST Nov 22 2025
0022 PST Nov 23 2025
November 23, 2025 at 8:28 AM
EVALUATION
---
* There is NO tsunami danger from this earthquake.
PRELIMINARY EARTHQUAKE PARAMETERS
---
* The following parameters are based on a rapid preliminary
assessment of the earthquake and changes may occur.
* Magnitude 5.2
* Origin Time 2322 AKST Nov 22 2025
0022 PST Nov 23 2025
---
* There is NO tsunami danger from this earthquake.
PRELIMINARY EARTHQUAKE PARAMETERS
---
* The following parameters are based on a rapid preliminary
assessment of the earthquake and changes may occur.
* Magnitude 5.2
* Origin Time 2322 AKST Nov 22 2025
0022 PST Nov 23 2025
Geological Survey (earthquake.usgs.gov) or the appropriate
regional seismic network.
* This will be the only U.S. National Tsunami Warning Center
message issued for this event unless additional information
becomes available.
regional seismic network.
* This will be the only U.S. National Tsunami Warning Center
message issued for this event unless additional information
becomes available.
November 22, 2025 at 3:43 PM
Geological Survey (earthquake.usgs.gov) or the appropriate
regional seismic network.
* This will be the only U.S. National Tsunami Warning Center
message issued for this event unless additional information
becomes available.
regional seismic network.
* This will be the only U.S. National Tsunami Warning Center
message issued for this event unless additional information
becomes available.