SOUTH CHINA COASTAL WATERS

(NOT TO BE ISSUED AFTER 3:30 A.M.)

WEATHER INFORMATION FOR SOUTH CHINA COASTAL WATERS ISSUED
BY THE HONG KONG OBSERVATORY AT 2 A.M. ON 18 SEPTEMBER 2025

WARNINGS:

GALE FORCE WINDS IN NAN'AO AND SHANWEI.

WEATHER SITUATION:

AN EASTERLY AIRSTREAM IS AFFECTING THE SOUTH CHINA COASTAL
WATERS.

AT 2 A.M., THE TROPICAL DEPRESSION OVER THE NORTHEASTERN
PART OF THE SOUTH CHINA SEA WITH MAXIMUM SUSTAINED WINDS OF
ABOUT 55 KILOMETRES PER HOUR NEAR ITS CENTRE WAS LOCATED AT
19.0 DEGREES NORTH, 119.8 DEGREES EAST. IT IS FORECAST TO
MOVE NORTHWEST AT ABOUT 18 KILOMETRES PER HOUR IN THE
GENERAL DIRECTION OF THE COAST OF EASTERN GUANGDONG.

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 AND SHANWEI:
EAST TO NORTHEAST FORCE 5 TO 6, BECOMING CYCLONIC FORCE 9
LATER.
FREQUENT HEAVY SQUALLY SHOWERS AND THUNDERSTORMS.
MODERATE TO ROUGH SEAS, BECOMING VERY ROUGH LATER.

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

WEST TO NORTHWESTERLY WINDS OF UP TO FORCE 9, CYCLONIC
WINDS OF FORCE 10 IN EAST AT FIRST. FREQUENT HEAVY SQUALLY
SHOWERS AND THUNDERSTORMS.

LATEST REPORTS FROM SOUTH CHINA COASTAL WEATHER STATIONS

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

SHANTOU            WIND SOUTH-SOUTHEAST FORCE 1 
                   VISIBILITY 30 KILOMETRES

HUANGMAOZHOU       WIND EAST FORCE 5

MACAU              WIND EAST-NORTHEAST FORCE 1 
                   VISIBILITY OVER 70 KILOMETRES

XISHA              WIND EAST FORCE 2 
                   VISIBILITY 30 KILOMETRES

DISPATCHED BY HONG KONG OBSERVATORY AT 02:00 HKT ON 18.09.2025