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 3 OCTOBER 2025

WARNINGS:

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

WEATHER SITUATION:

AT 10 A.M., SEVERE TROPICAL STORM MATMO WITH MAXIMUM
SUSTAINED WINDS OF ABOUT 110 KILOMETRES PER HOUR NEAR ITS
CENTRE WAS LOCATED AT 16.5 DEGREES NORTH, 122.2 DEGREES
EAST. IT IS FORECAST TO MOVE WEST-NORTHWEST AT ABOUT 25
KILOMETRES PER HOUR ACROSS LUZON.

AREA FORECASTS FOR THE NEXT 24 HOURS

HONG KONG ADJACENT WATERS:

EAST FORCE 4.
ISOLATED SHOWERS.
MODERATE SEAS.

NAN'AO AND SHANWEI:
NORTHEAST FORCE 4 TO 5, UP TO FORCE 7 LATER.
SCATTERED SQUALLY SHOWERS AND THUNDERSTORMS.
MODERATE SEAS, BECOMING ROUGH LATER.

SOUTH OF HONG KONG:
EAST TO NORTHEAST FORCE 4 TO 5, BECOMING NORTH UP TO FORCE
7 LATER.
SCATTERED SQUALLY SHOWERS AND THUNDERSTORMS.
MODERATE SEAS, BECOMING ROUGH LATER.

SHANGCHUAN DAO:
EAST FORCE 4 TO 5, BECOMING NORTH UP TO FORCE 5 LATER.
ISOLATED SHOWERS AND THUNDERSTORMS.
MODERATE SEAS.

OUTLOOK FOR THE FOLLOWING 48 HOURS

NORTHEASTERLY WINDS OF FORCE 7 TO 8, BECOMING CYCLONIC
WINDS OF UP TO FORCE 12. FREQUENT HEAVY SQUALLY SHOWERS AND
THUNDERSTORMS.

LATEST REPORTS FROM SOUTH CHINA COASTAL WEATHER STATIONS

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WAGLAN ISLAND      WIND EAST-NORTHEAST FORCE 2 
                   VISIBILITY OVER 50 KILOMETRES

SHANTOU            WIND WEST-SOUTHWEST FORCE 1 
                   VISIBILITY 24 KILOMETRES

MACAU              WIND EAST-NORTHEAST FORCE 1

XISHA              WIND NORTH FORCE 1 
                   VISIBILITY 27 KILOMETRES

DISPATCHED BY HONG KONG OBSERVATORY AT 09:46 HKT ON 03.10.2025