PRESS WEATHER NO. 117 - SOUTH CHINA COASTAL WATERS

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SOUTH CHINA COASTAL WATERS

(NOT TO BE ISSUED AFTER 12:30 P.M.)

WEATHER INFORMATION FOR SOUTH CHINA COASTAL WATERS ISSUED
BY THE HONG KONG OBSERVATORY AT 9:45 A.M. ON 17 SEPTEMBER
2025

WARNINGS:

STRONG WINDS IN NAN'AO AND SHANWEI.

WEATHER SITUATION:

AN EASTERLY AIRSTREAM IS AFFECTING THE SOUTH CHINA COASTAL
WATERS.

AT 10 A.M., THE TROPICAL DEPRESSION OVER LUZON WITH MAXIMUM
SUSTAINED WINDS OF ABOUT 55 KILOMETRES PER HOUR NEAR ITS
CENTRE WAS LOCATED AT 17.1 DEGREES NORTH, 121.6 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 FORCE 4 TO 5.
SCATTERED SHOWERS AND SQUALLY THUNDERSTORMS.
MODERATE SEAS.

NAN'AO:
EAST TO NORTHEAST FORCE 5 TO 6.
OCCASIONAL SQUALLY SHOWERS AND THUNDERSTORMS.
MODERATE TO ROUGH SEAS.

SHANWEI:
EAST TO NORTHEAST FORCE 4 TO 5, OCCASIONALLY FORCE 6.
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 10 IN EAST. FREQUENT HEAVY SQUALLY SHOWERS
AND THUNDERSTORMS.

LATEST REPORTS FROM SOUTH CHINA COASTAL WEATHER STATIONS

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WAGLAN ISLAND      WIND NORTHEAST FORCE 4 
                   VISIBILITY OVER 50 KILOMETRES

SHANTOU            WIND WEST-SOUTHWEST FORCE 1 
                   VISIBILITY 23 KILOMETRES IN RAIN

HUANGMAOZHOU       WIND EAST FORCE 4

MACAU              WIND EAST FORCE 2

XISHA              WIND EAST FORCE 2 
                   VISIBILITY 26 KILOMETRES

DISPATCHED BY HONG KONG OBSERVATORY AT 09:46 HKT ON 17.09.2025