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 30 JULY 2025

WARNINGS:

STRONG WINDS IN NAN'AO, SHANWEI, SOUTH OF HONG KONG AND
SHANGCHUAN DAO.

WEATHER SITUATION:

A BROAD TROUGH OF LOW PRESSURE IS BRINGING UNSETTLED
WEATHER TO THE SOUTH CHINA COASTAL WATERS.

AT 3 A.M., TROPICAL STORM CO-MAY WITH MAXIMUM SUSTAINED
WINDS OF ABOUT 85 KILOMETRES PER HOUR NEAR ITS CENTRE WAS
LOCATED AT 29.3 DEGREES NORTH, 123.0 DEGREES EAST. IT IS
FORECAST TO MOVE NORTHWEST AT ABOUT 15 KILOMETRES PER HOUR
ACROSS THE EAST CHINA SEA IN GENERAL DIRECTION OF THE
VICINITY OF THE COAST OF EASTERN CHINA.

AREA FORECASTS FOR THE NEXT 24 HOURS

HONG KONG ADJACENT WATERS:

WEST TO SOUTHWEST FORCE 4 TO 5.
OCCASIONAL HEAVY SHOWERS AND SQUALLY THUNDERSTORMS.
MODERATE SEAS.

NAN'AO AND SHANWEI:
WEST TO SOUTHWEST FORCE 4 TO 5, OCCASIONALLY FORCE 6.
OCCASIONAL HEAVY SHOWERS AND SQUALLY THUNDERSTORMS.
MODERATE TO ROUGH SEAS.

SOUTH OF HONG KONG AND SHANGCHUAN DAO:
WEST TO SOUTHWEST FORCE 4 TO 5, OCCASIONALLY FORCE 6.
SCATTERED SHOWERS AND SQUALLY THUNDERSTORMS.
MODERATE TO ROUGH SEAS.

OUTLOOK FOR THE FOLLOWING 48 HOURS

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 WEST-SOUTHWEST FORCE 5 
                   VISIBILITY 25 KILOMETRES

SHANTOU            WIND WEST-NORTHWEST FORCE 1 
                   VISIBILITY 13 KILOMETRES IN RAIN

HUANGMAOZHOU       WIND WEST FORCE 5

MACAU              WIND SOUTH-SOUTHWEST FORCE 2 
                   VISIBILITY 13 KILOMETRES

XISHA              WIND SOUTHWEST FORCE 4 
                   VISIBILITY 9 KILOMETRES

DISPATCHED BY HONG KONG OBSERVATORY AT 03:30 HKT ON 30.07.2025