SOUTH CHINA COASTAL WATERS

(NOT TO BE ISSUED AFTER 4:30 P.M.)

WEATHER INFORMATION FOR SOUTH CHINA COASTAL WATERS ISSUED
BY THE HONG KONG OBSERVATORY AT 12:30 P.M. ON 18 AUGUST 2025

WARNINGS:

STRONG WINDS IN ALL AREAS.

WEATHER SITUATION:

AN AREA OF LOW PRESSURE OVER THE SEAS EAST OF TAIWAN IS
INTENSIFYING GRADUALLY. A TROPICAL CYCLONE APPEARS TO BE
FORMING.

AT NOON, THE TROPICAL DEPRESSION OVER THE SEAS WEST OF
HAINAN ISLAND WITH MAXIMUM SUSTAINED WINDS OF ABOUT 45
KILOMETRES PER HOUR NEAR ITS CENTRE WAS LOCATED AT 19.1
DEGREES NORTH, 108.0 DEGREES EAST. IT IS FORECAST TO MOVE
NORTH-NORTHWEST AT ABOUT 12 KILOMETRES PER HOUR ACROSS
BEIBU WAN.

AREA FORECASTS FOR THE NEXT 24 HOURS

HONG KONG ADJACENT WATERS:

EAST TO SOUTHEAST FORCE 5, FORCE 6 AT FIRST.
OCCASIONAL HEAVY SHOWERS AND SQUALLY THUNDERSTORMS.
MODERATE SEAS, ROUGH AT FIRST.

NAN'AO AND SHANWEI:
SOUTH TO SOUTHEAST FORCE 4 TO 5, OCCASIONALLY FORCE 6 AT
FIRST.
SCATTERED SHOWERS AND SQUALLY THUNDERSTORMS.
MODERATE SEAS, ROUGH AT FIRST.

SOUTH OF HONG KONG:
SOUTH TO SOUTHEAST FORCE 5, FORCE 6 AT FIRST.
OCCASIONAL HEAVY SHOWERS AND SQUALLY THUNDERSTORMS.
MODERATE SEAS, ROUGH AT FIRST.

SHANGCHUAN DAO:
SOUTH TO SOUTHEAST FORCE 5 TO 6.
FREQUENT HEAVY SQUALLY SHOWERS AND THUNDERSTORMS.
MODERATE TO ROUGH SEAS.

OUTLOOK FOR THE FOLLOWING 48 HOURS

SOUTHERLY WINDS OF FORCE 4 TO 5. SCATTERED HEAVY SHOWERS
AND SQUALLY THUNDERSTORMS.

LATEST REPORTS FROM SOUTH CHINA COASTAL WEATHER STATIONS

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WAGLAN ISLAND      WIND SOUTHEAST FORCE 3 
                   VISIBILITY 23 KILOMETRES

SHANTOU            WIND SOUTHEAST FORCE 2 
                   VISIBILITY 30 KILOMETRES

HUANGMAOZHOU       WIND SOUTHEAST FORCE 5

MACAU              WIND EAST FORCE 3 
                   VISIBILITY 23 KILOMETRES IN RAIN

XISHA              WIND SOUTH FORCE 2 
                   VISIBILITY 15 KILOMETRES

DISPATCHED BY HONG KONG OBSERVATORY AT 12:31 HKT ON 18.08.2025