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WEMM40 LIIB 231357

TSUNAMI MESSAGE NUMBER 004

NEAM INGV IT-NTWC TSUNAMI SERVICE PROVIDER

ISSUED AT 1357Z 23 APR 2025



... END OF TSUNAMI ADVISORY ...

THIS ALERT APPLIES TO TURKIYE



THIS ALERT IS ADDRESSED TO ALL COUNTRIES AND INSTITUTIONS SUBSCRIBED

TO THE SERVICES OF INGV TSP IN ITS MONITORING AREA



THIS MESSAGE IS ISSUED AS ADVICE TO GOVERNMENT AGENCIES. ONLY

NATIONAL AND LOCAL GOVERNMENT AGENCIES HAVE THE AUTHORITY TO MAKE

DECISIONS REGARDING THE OFFICIAL STATE OF ALERT IN THEIR AREA AND ANY

ACTIONS TO BE TAKEN IN RESPONSE.



AN EARTHQUAKE HAS OCCURRED WITH THESE PRELIMINARY PARAMETERS

ORIGIN TIME - 0949Z 23 APR 2025

COORDINATES - 40.91 NORTH 28.21 EAST

DEPTH - 19 KM

LOCATION - TURKIYE

MAGNITUDE - 6.3



EVALUATION OF TSUNAMI ADVISORY

SEA LEVEL READINGS INDICATE A TSUNAMI WAS GENERATED.

OBSERVATIONS AND MODELS INDICATE THAT NO MORE TSUNAMI WAVES ARE

EXPECTED.

WHEN NO MAJOR WAVES ARE OBSERVED FOR TWO HOURS AFTER THE

ESTIMATED TIME OF ARRIVAL OR DAMAGING WAVES HAVE NOT OCCURRED FOR

AT LEAST TWO HOURS THEN LOCAL AUTHORITIES CAN ASSUME THE THREAT IS

PASSED. DANGER TO BOATS AND COASTAL STRUCTURES CAN CONTINUE FOR

SEVERAL HOURS DUE TO THE CONTINUING SEA LEVEL CHANGES AND RAPID

CURRENTS. AS LOCAL CONDITIONS CAN CAUSE A WIDE VARIATION IN TSUNAMI

WAVE ACTION THE ALL CLEAR DETERMINATION MUST BE MADE BY LOCAL

AUTHORITIES.



THIS WILL BE THE FINAL MESSAGE ISSUED FOR THIS EVENT UNLESS ADDITIONAL

INFORMATION BECOMES AVAILABLE.



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