PRESS WEATHER NO. 122 - SOUTH CHINA COASTAL WATERS

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SOUTH CHINA COASTAL WATERS

(NOT TO BE ISSUED AFTER 4:30 P.M.)

WEATHER INFORMATION FOR SOUTH CHINA COASTAL WATERS ISSUED
BY THE HONG KONG OBSERVATORY AT 12:30 P.M. ON 4 OCTOBER 2025

WARNINGS:

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

WEATHER SITUATION:

AT NOON, SEVERE TROPICAL STORM MATMO WITH MAXIMUM SUSTAINED
WINDS OF ABOUT 110 KILOMETRES PER HOUR NEAR ITS CENTRE WAS
LOCATED AT 18.3 DEGREES NORTH, 115.7 DEGREES EAST. IT IS
FORECAST TO MOVE WEST-NORTHWEST AT ABOUT 25 KILOMETRES PER
HOUR ACROSS THE NORTHERN PART OF THE SOUTH CHINA SEA AND
INTENSIFY GRADUALLY.

AREA FORECASTS FOR THE NEXT 24 HOURS

HONG KONG ADJACENT WATERS:

EAST TO NORTHEAST FORCE 6 TO 7, BECOMING SOUTHEAST FORCE 8.
FREQUENT HEAVY SQUALLY SHOWERS AND THUNDERSTORMS.
ROUGH SEAS, BECOMING VERY ROUGH.

NAN'AO:
EAST TO SOUTHEAST FORCE 6 TO 7.
FREQUENT HEAVY SQUALLY SHOWERS AND THUNDERSTORMS.
ROUGH SEAS.

SHANWEI:
EAST TO NORTHEAST FORCE 7 TO 8, BECOMING SOUTHEAST UP TO
FORCE 9.
FREQUENT HEAVY SQUALLY SHOWERS AND THUNDERSTORMS.
ROUGH TO VERY ROUGH SEAS, BECOMING HIGH.

SOUTH OF HONG KONG:
NORTH TO NORTHEAST FORCE 7 TO 8, BECOMING SOUTHEAST UP TO
FORCE 12.
FREQUENT HEAVY SQUALLY SHOWERS AND THUNDERSTORMS.
ROUGH TO VERY ROUGH SEAS, BECOMING PHENOMENAL.

SHANGCHUAN DAO:
NORTH TO NORTHEAST FORCE 6 TO 7, BECOMING CYCLONIC FORCE 12
LATER.
FREQUENT HEAVY SQUALLY SHOWERS AND THUNDERSTORMS.
ROUGH SEAS, BECOMING PHENOMENAL LATER.

OUTLOOK FOR THE FOLLOWING 48 HOURS

SOUTHEASTERLY WINDS OF FORCE 9 TO 10, CYCLONIC WINDS OF
FORCE 11 AT FIRST. FREQUENT HEAVY SQUALLY SHOWERS AND
THUNDERSTORMS.

LATEST REPORTS FROM SOUTH CHINA COASTAL WEATHER STATIONS

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WAGLAN ISLAND      WIND NORTHEAST FORCE 4 
                   VISIBILITY 38 KILOMETRES

SHANTOU            WIND EAST-SOUTHEAST FORCE 2 
                   VISIBILITY 30 KILOMETRES

MACAU              WIND NORTH-NORTHEAST FORCE 3 
                   VISIBILITY 20 KILOMETRES

XISHA              WIND NORTHWEST FORCE 3 
                   VISIBILITY 20 KILOMETRES

DISPATCHED BY HONG KONG OBSERVATORY AT 12:33 HKT ON 04.10.2025