WESS31 VHHH 110200 ISSUED BY BACKUP SOUTH CHINA SEA TSUNAMI ADVISORY CENTER (HONG KONG) (BSCSTAC) AT 0200 UTC DEC 11 2023. THIS IS FOR INFORMATION ONLY THAT THE BACKUP SOUTH CHINA SEA TSUNAMI ADVISORY CENTER (HONG KONG) (BSCSTAC) WILL OPERATE STARTING FROM 0200 UTC DEC 11 2023 TO 0200 UTC DEC 22 2023 INCLUSIVE IN PLACE OF THE SOUTH CHINA SEA TSUNAMI ADVISORY CENTER (SCSTAC). IN CASE OF QUESTIONS, PLEASE CONTACT SCSTAC (EMAIL: TSU@NMEFC.CN) OR BSCSTAC (EMAIL: INFO-BSCSTAC@HKO.GOV.HK).