SOUTH CHINA COASTAL WATERS

(NOT TO BE ISSUED AFTER 7:45 P.M.)

WEATHER INFORMATION FOR SOUTH CHINA COASTAL WATERS ISSUED
BY THE HONG KONG OBSERVATORY AT 4:30 P.M. ON 17 SEPTEMBER
2025

WARNINGS:

GALE FORCE WINDS IN NAN'AO. STRONG WINDS IN SHANWEI.

WEATHER SITUATION:

AN EASTERLY AIRSTREAM IS AFFECTING THE SOUTH CHINA COASTAL
WATERS.

AT 4 P.M., TROPICAL DEPRESSION  WITH MAXIMUM SUSTAINED
WINDS OF ABOUT 55 KILOMETRES PER HOUR NEAR ITS CENTRE WAS
LOCATED AT 17.9 DEGREES NORTH, 120.7 DEGREES EAST. IT IS
FORECAST TO MOVE NORTHWEST AT ABOUT 18 KILOMETRES PER HOUR
ACROSS LUZON AND TOWARDS THE
NORTHEASTERN PART OF THE SOUTH CHINA SEA.

AREA FORECASTS FOR THE NEXT 24 HOURS

HONG KONG ADJACENT WATERS:

EAST TO NORTHEAST FORCE 4 TO 5.
SCATTERED SHOWERS AND SQUALLY THUNDERSTORMS.
MODERATE SEAS.

NAN'AO:
EAST TO NORTHEAST FORCE 5 TO 6, UP TO FORCE 8 LATER.
OCCASIONAL SQUALLY SHOWERS AND THUNDERSTORMS.
MODERATE TO ROUGH SEAS, BECOMING VERY ROUGH LATER.

SHANWEI:
EAST TO NORTHEAST FORCE 5 TO 6, UP TO FORCE 7 LATER.
SCATTERED SHOWERS AND SQUALLY THUNDERSTORMS.
MODERATE TO ROUGH SEAS.

SOUTH OF HONG KONG AND SHANGCHUAN DAO:
EAST TO NORTHEAST FORCE 4 TO 5.
SCATTERED SHOWERS AND SQUALLY THUNDERSTORMS.
MODERATE SEAS.

OUTLOOK FOR THE FOLLOWING 48 HOURS

NORTHEASTERLY WINDS OF FORCE 5 TO 6, BECOMING CYCLONIC
WINDS OF FORCE 11 IN EAST. FREQUENT HEAVY SQUALLY SHOWERS
AND THUNDERSTORMS.

LATEST REPORTS FROM SOUTH CHINA COASTAL WEATHER STATIONS

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WAGLAN ISLAND      WIND EAST-SOUTHEAST FORCE 3 
                   VISIBILITY OVER 50 KILOMETRES

SHANTOU            WIND SOUTH-SOUTHEAST FORCE 2 
                   VISIBILITY 30 KILOMETRES

HUANGMAOZHOU       WIND EAST FORCE 5

MACAU              WIND EAST FORCE 2 
                   VISIBILITY OVER 65 KILOMETRES

XISHA              WIND EAST FORCE 2 
                   VISIBILITY 24 KILOMETRES

DISPATCHED BY HONG KONG OBSERVATORY AT 16:30 HKT ON 17.09.2025