SOUTH CHINA COASTAL WATERS

(NOT TO BE ISSUED AFTER 5:30 A.M.)

WEATHER INFORMATION FOR SOUTH CHINA COASTAL WATERS ISSUED
BY THE HONG KONG OBSERVATORY AT 3:30 A.M. ON 28 JULY 2025

WARNINGS:

STRONG WINDS IN NAN'AO.

WEATHER SITUATION:

A SOUTHWESTERLY AIRSTREAM IS AFFECTING THE SOUTH CHINA
COASTAL WATERS.

AT 3 A.M., TROPICAL STORM CO-MAY WITH MAXIMUM SUSTAINED
WINDS OF ABOUT 65 KILOMETRES PER HOUR NEAR ITS CENTRE WAS
LOCATED AT 26.5 DEGREES NORTH, 129.5 DEGREES EAST. IT IS
FORECAST TO BE SLOW-MOVING AT FIRST, LINGERING OVER THE
VICINITY OF THE RYUKYU ISLANDS, AND THEN MOVE
WEST-NORTHWEST AT ABOUT 15 KILOMETRES PER HOUR ACROSS THE
EAST CHINA SEA.

AREA FORECASTS FOR THE NEXT 24 HOURS

HONG KONG ADJACENT WATERS:

SOUTHWEST FORCE 4, OCCASIONALLY FORCE 5.
SCATTERED SHOWERS AND SQUALLY THUNDERSTORMS.
MODERATE SEAS.

NAN'AO:
WEST TO SOUTHWEST FORCE 4 TO 5, UP TO FORCE 6 LATER.
SCATTERED SHOWERS AND SQUALLY THUNDERSTORMS.
MODERATE TO ROUGH SEAS.

SHANWEI, SOUTH OF HONG KONG AND SHANGCHUAN DAO:
WEST TO SOUTHWEST FORCE 4 TO 5.
SCATTERED SHOWERS AND SQUALLY THUNDERSTORMS.
MODERATE SEAS.

OUTLOOK FOR THE FOLLOWING 48 HOURS

WEST TO SOUTHWESTERLY WINDS OF FORCE 4 TO 5, OCCASIONALLY
FORCE 6. SCATTERED SHOWERS AND SQUALLY THUNDERSTORMS.

LATEST REPORTS FROM SOUTH CHINA COASTAL WEATHER STATIONS

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WAGLAN ISLAND      WIND SOUTHWEST FORCE 5 
                   VISIBILITY OVER 50 KILOMETRES

SHANTOU            WIND SOUTHWEST FORCE 1 
                   VISIBILITY 25 KILOMETRES

HUANGMAOZHOU       WIND EAST-SOUTHEAST FORCE 5

MACAU              WIND SOUTHWEST FORCE 2

XISHA              WIND SOUTHWEST FORCE 4 
                   VISIBILITY 16 KILOMETRES

DISPATCHED BY HONG KONG OBSERVATORY AT 03:30 HKT ON 28.07.2025