SOUTH CHINA COASTAL WATERS

(NOT TO BE ISSUED AFTER 9:45 A.M.)

WEATHER INFORMATION FOR SOUTH CHINA COASTAL WATERS ISSUED
BY THE HONG KONG OBSERVATORY AT 5:45 A.M. ON 4 JULY 2025

WARNINGS:

STRONG WINDS IN NAN'AO AND SHANWEI.

WEATHER SITUATION:

THE AREA OF LOW PRESSURE OVER THE NORTHEASTERN PART OF
SOUTH CHINA SEA IS INTENSIFYING GRADUALLY. A TROPICAL
CYCLONE APPEARS TO BE FORMING.

AREA FORECASTS FOR THE NEXT 24 HOURS

HONG KONG ADJACENT WATERS:

EAST TO NORTHEAST FORCE 4, OCCASIONALLY FORCE 5.
ISOLATED SHOWERS AND THUNDERSTORMS.
MODERATE SEAS.

NAN'AO:
EAST TO NORTHEAST FORCE 4 TO 5, BECOMING UP TO FORCE 7.
FREQUENT HEAVY SQUALLY SHOWERS AND THUNDERSTORMS.
MODERATE SEAS, BECOMING ROUGH.

SHANWEI:
EAST TO NORTHEAST FORCE 4, OCCASIONALLY FORCE 5, UP TO
FORCE 6 LATER.
SCATTERED SQUALLY SHOWERS AND THUNDERSTORMS.
MODERATE SEAS, BECOMING ROUGH LATER.

SOUTH OF HONG KONG:
EAST TO NORTHEAST FORCE 4, OCCASIONALLY FORCE 5.
ISOLATED SHOWERS AND SQUALLY THUNDERSTORMS.
MODERATE SEAS.

SHANGCHUAN DAO:
EAST TO NORTHEAST FORCE 4, OCCASIONALLY FORCE 5, BECOMING
WEST TO NORTHWEST UP TO FORCE 5 LATER.
SCATTERED SHOWERS AND SQUALLY THUNDERSTORMS.
MODERATE SEAS.

OUTLOOK FOR THE FOLLOWING 48 HOURS

EAST TO NORTHEASTERLY WINDS OF FORCE 4 TO 5, BECOMING
CYCLONIC WINDS OF UP TO FORCE 8 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 2 
                   VISIBILITY 19 KILOMETRES

SHANTOU            WIND SOUTH-SOUTHWEST FORCE 1 
                   VISIBILITY 28 KILOMETRES

HUANGMAOZHOU       WIND EAST FORCE 3

MACAU              WIND EAST-SOUTHEAST FORCE 2 
                   VISIBILITY 30 KILOMETRES

XISHA              WIND SOUTHWEST FORCE 3 
                   VISIBILITY 6 KILOMETRES

DISPATCHED BY HONG KONG OBSERVATORY AT 05:45 HKT ON 04.07.2025