LOCALLY FELT EARTH TREMOR REPORT


 

(UPDATE) INITIAL ANALYSIS FROM THE HONG KONG OBSERVATORY
INDICATED THAT AN EARTHQUAKE OF MAGNITUDE 4.9 HAS OCCURRED
AT 5:47 A.M. ON 1 MAY 2023 (MONDAY) OVER SOUTH CHINA SEA.
THE EPICENTRE IS LOCATED NEAR 20.90N, 114.40E, ABOUT 160
KILOMETRES SOUTH 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 OVER TEN LOCALLY FELT REPORTS OF
MINOR SHAKING, THE DURATION OF WHICH WAS A FEW SECONDS.
INITIAL ESTIMATE GAVE A LOCAL INTENSITY OF IV (FOUR) ON THE
MODIFIED MERCALLI INTENSITY SCALE, THAT IS HANGING OBJECTS
SWING. WINDOWS, DISHES, DOORS RATTLE. 
 
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 06:16 HKT ON 01.05.2023