M 5.54 in United States on 21 May 2023 18:44 UTC

Global Telecommunication Service

GTS (Global Telecommunication Service) is the official Warning and Alerting channel by the World Meteorological Organization (WMO) adopted by several Warning Organizations. As soon as a new GTS message regarding Tropical Cyclones(WT) or Tsunami(WE) the messages are processed and possibly assigned to the specific event. When a new GTS message is present an new tab in the specific event report page is present.The presence of a GTS message is shown in the homepage with a dedicated icon.

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2023-05-21 18:50 message from NTWC link

Key information extracted from original GTS message :
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 1044 akdt MAY 21.2023 1144 pdt MAY 21 2023 1844 UTC MAY 21
  • Coordinates 40.4 north 125 3 west
  • Depth 3 miles
  • Location 65 miles sw of eureka california 235 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

Original Message :

WEAK53 PAAQ 211849
TIBAK1

Tsunami Information Statement Number 1
NWS National Tsunami Warning Center Palmer AK
1149 AM PDT Sun May 21 2023

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

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 1044 AKDT May 21 2023
1144 PDT May 21 2023
1844 UTC May 21 2023
* Coordinates 40.4 North 125.3 West
* Depth 3 miles
* Location 65 miles SW of Eureka, California
235 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.

$$

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