LOCALLY FELT EARTH TREMOR REPORT


 

(UPDATE) INITIAL ANALYSIS FROM THE HONG KONG OBSERVATORY
INDICATED THAT AN EARTHQUAKE OF MAGNITUDE 6.3 HAS OCCURRED
AT 7:03 P.M. ON 12 SEPTEMBER 2023 (TUESDAY) IN PHILIPPINE
ISLANDS REGION. THE EPICENTRE IS LOCATED NEAR 19.38N,
121.05E, ABOUT 140 KILOMETRES NORTH-NORTHEAST OF LAOAG
(ABOUT 790 KILOMETRES EAST-SOUTHEAST OF HONG KONG). THE
FOCAL DEPTH IS ABOUT 36 KILOMETRES.
 
EPICENTRE LOCATION MAP :
HTTPS://WWW.HKO.GOV.HK/EN/GTS/EQUAKE/MAP.HTM 
 
THE OBSERVATORY RECEIVED OVER TEN LOCALLY FELT REPORTS OF
MINOR SHAKING, 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 19:31 HKT ON 12.09.2023