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 19 SEPTEMBER
2025

WARNINGS:

STORM FORCE WINDS IN HONG KONG ADJACENT WATERS AND SHANWEI.
GALE FORCE WINDS IN NAN'AO AND SOUTH OF HONG KONG. STRONG
WINDS IN SHANGCHUAN DAO.

WEATHER SITUATION:

AT 10 A.M., SEVERE TROPICAL STORM MITAG WITH MAXIMUM
SUSTAINED WINDS OF ABOUT 90 KILOMETRES PER HOUR NEAR ITS
CENTRE WAS LOCATED AT 22.3 DEGREES NORTH, 115.6 DEGREES
EAST. IT IS FORECAST TO MOVE NORTHWEST AT ABOUT 12
KILOMETRES PER HOUR TOWARDS THE COAST OF EASTERN GUANGDONG.

AREA FORECASTS FOR THE NEXT 24 HOURS

HONG KONG ADJACENT WATERS:

NORTH TO NORTHWEST FORCE 7 TO 8, BECOMING UP TO FORCE 10.
FREQUENT HEAVY SQUALLY SHOWERS AND THUNDERSTORMS.
ROUGH TO VERY ROUGH SEAS, BECOMING HIGH.

NAN'AO:
SOUTH TO SOUTHEAST FORCE 6 TO 7, UP TO FORCE 8 AT FIRST.
FREQUENT HEAVY SQUALLY SHOWERS AND THUNDERSTORMS.
ROUGH SEAS, VERY ROUGH AT FIRST.

SHANWEI:
SOUTH TO SOUTHWEST FORCE 8 TO 9, CYCLONIC UP TO FORCE 10 AT
FIRST.
FREQUENT HEAVY SQUALLY SHOWERS AND THUNDERSTORMS.
VERY ROUGH TO HIGH SEAS.

SOUTH OF HONG KONG:
SOUTH TO SOUTHWEST FORCE 7 TO 8, NORTH TO NORTHWEST UP TO
FORCE 8 AT FIRST.
FREQUENT HEAVY SQUALLY SHOWERS AND THUNDERSTORMS.
ROUGH TO VERY ROUGH SEAS.

SHANGCHUAN DAO:
NORTH TO NORTHEAST FORCE 4 TO 5, BECOMING WEST TO SOUTHWEST
UP TO FORCE 6.
SCATTERED SHOWERS AND SQUALLY THUNDERSTORMS.
MODERATE SEAS, BECOMING ROUGH.

OUTLOOK FOR THE FOLLOWING 48 HOURS

EASTERLY WINDS OF FORCE 5 TO 6, WEST TO SOUTHWESTERLY WINDS
OF UP TO FORCE 8 AT FIRST. FREQUENT HEAVY SQUALLY SHOWERS
AND THUNDERSTORMS.

LATEST REPORTS FROM SOUTH CHINA COASTAL WEATHER STATIONS

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WAGLAN ISLAND      WIND NORTHWEST FORCE 4 
                   VISIBILITY OVER 50 KILOMETRES

SHANTOU            WIND EAST-SOUTHEAST FORCE 2 
                   VISIBILITY 2800 METRES IN RAIN

HUANGMAOZHOU       WIND NORTH-NORTHWEST FORCE 5

MACAU              WIND NORTH FORCE 2 
                   VISIBILITY OVER 70 KILOMETRES

XISHA              WIND SOUTH-SOUTHWEST FORCE 2 
                   VISIBILITY 27 KILOMETRES

DISPATCHED BY HONG KONG OBSERVATORY AT 09:47 HKT ON 19.09.2025