####018001383####
WEPA40 RJTD 221837

TSUNAMI BULLETIN NUMBER 001

   ISSUED BY NWPTAC(JMA)

   ISSUED AT 1837Z 22 APR 2024

PART 01 OF 01 PARTS



HYPOCENTRAL PARAMETERS

ORIGIN TIME:1826Z 22 APR 2024

PRELIMINARY EPICENTER:LAT23.8NORTH LON121.6EAST

 TAIWAN

 TAIWAN

MAG:6.6 (MJMA)



EVALUATION

 THERE IS A VERY SMALL POSSIBILITY OF A DESTRUCTIVE LOCAL TSUNAMI



THIS BULLETIN IS FOR

TAIWAN



ESTIMATED TSUNAMI ARRIVAL TIMES AND WAVE AMPLITUDES

TAIWAN

 LOCATION              COORDINATES  ARRIVAL TIME  AMPL

 HUALIEN               24.0N 121.6E 1829Z 22 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.



=