This information statement for 75 miles SW of Eureka, California is no longer in force, and was issued by NWS National Tsunami Warning Center. It is kept here as a record of what was issued and when.

Epicentre 40.360, -125.438 · nearest coast US

What this bulletin says

Information Statement

There is NO tsunami danger from this earthquake.

Preliminary magnitude 4.5(Ml). Magnitudes are revised as more data arrives.

Bulletin details

Category: Information
Bulletin Issue Time: 2026.08.29 02:46:06 UTC
Preliminary Magnitude: 4.5(Ml)
Lat/Lon: 40.360 / -125.438
Affected Region: 75 miles SW of Eureka, California
Note: There is NO tsunami danger from this earthquake.
Definition: An information statement indicates that an earthquake has occurred, but does not pose a tsunami threat, or that a tsunami warning, advisory, or watch has been issued for another section of the ocean.

Official bulletin

WEAK53 PAAQ 290246
TIBAK1

Tsunami Information Statement Number 1
NWS National Tsunami Warning Center Palmer AK
746 PM PDT Fri Aug 28 2026

...THIS IS A TSUNAMI INFORMATION STATEMENT...

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      4.5
 * Origin Time    1841 AKDT Aug 28 2026
                  1941  PDT Aug 28 2026
                  0241  UTC Aug 29 2026
 * Coordinates    40.4 North 125.4 West
 * Depth          8 miles
 * Location       75 miles SW of Eureka, California
                  240 miles NW of San Francisco, California


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
   message issued for this event unless additional information
   becomes available.

$$

View on tsunami.gov

Issued

29 August 2026 at 02:46 UTC

Effective

29 August 2026 at 02:46 UTC

Issued by

NWS National Tsunami Warning Center

The earthquake behind it

4.7M 4.7 - 85 km W of Petrolia, CA17 km from the bulletin's epicentre · Tap for the full event, aftershocks and revisions

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