WEIO24 AMMC 200801
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TSUNAMI BULLETIN NOTIFICATION MESSAGE NUMBER 1
IOTWMS TSUNAMI SERVICE PROVIDER AUSTRALIA [JATWC]
ISSUED AT 0801 UTC MONDAY 20 APRIL 2026
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TO:   INDIAN OCEAN NATIONAL TSUNAMI WARNING CENTRES [NTWC]
FROM: IOTWMS-TSP AUSTRALIA

NOTIFICATION:
IOTWMS-TSP AUSTRALIA HAS JUST ISSUED TSUNAMI BULLETIN NUMBER 1 FOR
THE INDIAN OCEAN, BASED ON AN EARTHQUAKE WITH THE FOLLOWING DETAILS:

MAGNITUDE:   7.5 Mw[Mwp]
DEPTH:       42 km
DATE:        20 Apr 2026
ORIGIN TIME: 0752 UTC
LATITUDE:    39.78N
LONGITUDE:   143.42E
LOCATION:    Off East Coast of Honshu, Japan

TO VIEW THE BULLETIN GO TO THE IOTWMS-TSP AUSTRALIA WEBSITE AT:

http://reg.bom.gov.au/tsunami/rtsp

NOTE: THIS IS A RESTRICTED-ACCESS WEBSITE CONTAINING TECHNICAL DATA
FOR INDIAN OCEAN NATIONAL TSUNAMI WARNING CENTRES ONLY. IT IS NOT
FOR GENERAL PUBLIC ACCESS.

GENERAL PUBLIC INFORMATION FOR THIS EVENT IS AVAILABLE FROM:

JOINT AUSTRALIAN TSUNAMI WARNING CENTRE [JATWC]
BUREAU OF METEOROLOGY
MELBOURNE, AUSTRALIA
http://www.bom.gov.au/tsunami

END OF NOTIFICATION MESSAGE
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