LOCALLY FELT EARTH TREMOR REPORT


 

(UPDATE) INITIAL ANALYSIS FROM THE HONG KONG OBSERVATORY
INDICATED THAT AN EARTHQUAKE OF MAGNITUDE 5.0 HAS OCCURRED
AT 3:20 A.M. ON 23 OCTOBER 2023 (MONDAY) NEAR COAST OF
SOUTHEASTERN CHINA. THE EPICENTRE IS LOCATED NEAR 23.32N,
117.39E, ABOUT 71 KILOMETRES EAST OF SHANTOU (ABOUT 350
KILOMETRES EAST-NORTHEAST OF HONG KONG). THE FOCAL DEPTH IS
ABOUT 10 KILOMETRES.
 
EPICENTRE LOCATION MAP :
HTTPS://WWW.HKO.GOV.HK/EN/GTS/EQUAKE/MAP.HTM 
 
THE OBSERVATORY RECEIVED SEVERAL LOCALLY FELT REPORTS OF
MINOR SHAKING, THE DURATION OF WHICH WAS A FEW SECONDS.
INITIAL ESTIMATE GAVE A LOCAL INTENSITY OF III (THREE) ON
THE MODIFIED MERCALLI INTENSITY SCALE, THAT IS FELT
INDOORS. VIBRATION LIKE PASSING OF LIGHT TRUCKS. 
 
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 03:48 HKT ON 23.10.2023