####018001972####
WEPA40 RJTD 030006

TSUNAMI BULLETIN NUMBER 001

   ISSUED BY NWPTAC(JMA)

   ISSUED AT 0006Z 03 APR 2024

PART 01 OF 01 PARTS



HYPOCENTRAL PARAMETERS

ORIGIN TIME:2358Z 02 APR 2024

PRELIMINARY EPICENTER:LAT23.8NORTH LON121.7EAST

 TAIWAN

 TAIWAN

MAG:7.5 (MJMA)



EVALUATION

 THERE IS A POSSIBILITY OF A DESTRUCTIVE LOCAL TSUNAMI

 NEAR THE EPICENTER



THIS BULLETIN IS FOR

COASTS OF EAST CHINA SEA

TAIWAN

EAST COASTS OF PHILIPPINES



ESTIMATED TSUNAMI ARRIVAL TIMES AND WAVE AMPLITUDES

COASTS OF EAST CHINA SEA

 LOCATION              COORDINATES  ARRIVAL TIME  AMPL

 WENZHOU               27.8N 121.2E 0226Z 03 APR  0.3-1M

TAIWAN

 LOCATION              COORDINATES  ARRIVAL TIME  AMPL

 CHILUNG               25.2N 121.8E 0028Z 03 APR  0.3-1M

 HUALIEN               24.0N 121.6E 2359Z 02 APR  5-10M

 TAITUNG               22.7N 121.2E 0015Z 03 APR  1-3M

EAST COASTS OF PHILIPPINES

 LOCATION              COORDINATES  ARRIVAL TIME  AMPL

 BASCO                 20.4N 122.0E 0033Z 03 APR  1-3M

 PALANAN               17.2N 122.6E 0100Z 03 APR  0.3-1M

 LAOANG                12.6N 125.0E 0142Z 03 APR  0.3-1M



AMPL - MAXIMUM AMPLITUDE IN METERS FROM THE

UNDISTURBED SEA LEVEL TO THE CREST



IN SOME COASTAL AREAS (PARTICULARLY NEAR THE EPICENTER),

TSUNAMI WAVES MAY BE HIGHER AND/OR ARRIVE EARLIER THAN

ESTIMATED FOR NEARBY FORECAST POINTS.

AUTHORITIES SHOULD BE AWARE OF THIS POSSIBILITY.



THE EVALUATION OF TSUNAMIGENIC POTENTIAL AND ESTIMATED

ARRIVAL TIMES FOR TSUNAMI WAVES MAY ALSO DIFFER FROM

THOSE OF PTWC DUE TO DIFFERENCES IN ESTIMATED EARTHQUAKE

PARAMETERS AND THE TSUNAMI FORECAST MODEL.

AUTHORITIES SHOULD REFER TO EARLIER ARRIVAL TIMES

FOR GREATEST SAFETY.



THIS WILL BE THE FINAL BULLETIN UNLESS CHANGES IN THE POTENTIAL

FOR TSUNAMI GENERATION ARE DEEMED POSSIBLE BASED ON EARTHQUAKE

RE-EVALUATION OR REPORTS INDICATING TSUNAMI OBSERVATION ARE

RECEIVED.



=

####018000259####
WEPA40 RJTD 030006

FOR GREATEST SAFETY.



THIS WILL BE THE FINAL BULLETIN UNLESS CHANGES IN THE POTENTIAL

FOR TSUNAMI GENERATION ARE DEEMED POSSIBLE BASED ON EARTHQUAKE

RE-EVALUATION OR REPORTS INDICATING TSUNAMI OBSERVATION ARE

RECEIVED.



=

####018001734####
WEPA40 RJTD 030006

TSUNAMI BULLETIN NUMBER 001

   ISSUED BY NWPTAC(JMA)

   ISSUED AT 0006Z 03 APR 2024

PART 01 OF 01 PARTS



HYPOCENTRAL PARAMETERS

ORIGIN TIME:2358Z 02 APR 2024

PRELIMINARY EPICENTER:LAT23.8NORTH LON121.7EAST

 TAIWAN

 TAIWAN

MAG:7.5 (MJMA)



EVALUATION

 THERE IS A POSSIBILITY OF A DESTRUCTIVE LOCAL TSUNAMI

 NEAR THE EPICENTER



THIS BULLETIN IS FOR

COASTS OF EAST CHINA SEA

TAIWAN

EAST COASTS OF PHILIPPINES



ESTIMATED TSUNAMI ARRIVAL TIMES AND WAVE AMPLITUDES

COASTS OF EAST CHINA SEA

 LOCATION              COORDINATES  ARRIVAL TIME  AMPL

 WENZHOU               27.8N 121.2E 0226Z 03 APR  0.3-1M

TAIWAN

 LOCATION              COORDINATES  ARRIVAL TIME  AMPL

 CHILUNG               25.2N 121.8E 0028Z 03 APR  0.3-1M

 HUALIEN               24.0N 121.6E 2359Z 02 APR  5-10M

 TAITUNG               22.7N 121.2E 0015Z 03 APR  1-3M

EAST COASTS OF PHILIPPINES

 LOCATION              COORDINATES  ARRIVAL TIME  AMPL

 BASCO                 20.4N 122.0E 0033Z 03 APR  1-3M

 PALANAN               17.2N 122.6E 0100Z 03 APR  0.3-1M

 LAOANG                12.6N 125.0E 0142Z 03 APR  0.3-1M



AMPL - MAXIMUM AMPLITUDE IN METERS FROM THE

UNDISTURBED SEA LEVEL TO THE CREST



IN SOME COASTAL AREAS (PARTICULARLY NEAR THE EPICENTER),

TSUNAMI WAVES MAY BE HIGHER AND/OR ARRIVE EARLIER THAN

ESTIMATED FOR NEARBY FORECAST POINTS.

AUTHORITIES SHOULD BE AWARE OF THIS POSSIBILITY.



THE EVALUATION OF TSUNAMIGENIC POTENTIAL AND ESTIMATED

ARRIVAL TIMES FOR TSUNAMI WAVES MAY ALSO DIFFER FROM

THOSE OF PTWC DUE TO DIFFERENCES IN ESTIMATED EARTHQUAKE

PARAMETERS AND THE TSUNAMI FORECAST MODEL.

AUTHORITIES SHOULD REFER TO EARLIER ARRIVAL TIMES