PRESS WEATHER NO. 170 - LOCALLY FELT EARTH TREMOR REPORT

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LOCALLY FELT EARTH TREMOR REPORT

 

(UPDATE) INITIAL ANALYSIS FROM THE HONG KONG OBSERVATORY
INDICATED THAT AN EARTHQUAKE OF MAGNITUDE 6.4 HAS OCCURRED
AT 11:07 P.M. ON 27 DECEMBER 2025 (SATURDAY) NORTHWEST OF
RYUKYU ISLANDS. THE EPICENTRE IS LOCATED NEAR 32.67N,
126.50E, ABOUT 92 KILOMETRES SOUTH OF JEJU (ABOUT 1670
KILOMETRES NORTHEAST OF HONG KONG). THE FOCAL DEPTH IS
ABOUT 570 KILOMETRES.
 
EPICENTRE LOCATION MAP :
HTTPS://WWW.HKO.GOV.HK/EN/GTS/EQUAKE/MAP.HTM 
 
THE OBSERVATORY RECEIVED OVER TEN LOCALLY FELT REPORTS OF
THIS EARTH TREMOR, THE DURATION OF WHICH WAS A FEW SECONDS.
INITIAL ESTIMATE GAVE A LOCAL INTENSITY OF II (TWO) ON THE
MODIFIED MERCALLI INTENSITY SCALE, THAT IS FELT BY PERSONS
AT REST, UPPER FLOORS, OR FAVORABLY PLACED. 
 
FOR DETAILED EXPLANATIONS ON THE MODIFIED MERCALLI
INTENSITY SCALE, PLEASE REFER TO THE FOLLOWING WEB PAGE:
HTTPS://WWW.HKO.GOV.HK/EN/GTS/EQUAKE/MMS.HTM

DISPATCHED BY HONG KONG OBSERVATORY AT 23:23 HKT ON 27.12.2025