HOURLY READINGS


 

AT 2 A.M. AT THE HONG KONG OBSERVATORY THE AIR TEMPERATURE
WAS 28 DEGREES CELSIUS AND THE RELATIVE HUMIDITY 86 PER
CENT.

 

AREAS OF INTENSE THUNDERY SHOWERS ASSOCIATED WITH UPPER-AIR
DISTURBANCES ARE AFFECTING HONG KONG. WHETHER THE RED
RAINSTORM WARNING SIGNAL NEEDS TO BE ISSUED DEPENDS ON THE
DEVELOPMENT OF THE AREAS OF THUNDERY SHOWERS. MEMBERS OF
THE PUBLIC SHOULD STAY ON HIGH ALERT AND TAKE NOTE OF THE
LATEST WEATHER INFORMATION.

SPECIAL LANDSLIP ADVISORY: RAIN HAS BEEN PARTICULARLY HEAVY
IN NORTH NEW TERRITORIES; AND MAY CAUSE LANDSLIDES. PAY
SPECIAL ATTENTION TO LANDSLIDE RISK AND STAY AWAY FROM
SLOPES. IF LANDSLIDE OCCURS NEARBY, LEAVE IMMEDIATELY AND
CALL THE POLICE UNDER SAFE CONDITIONS.

INTENSE GUSTS REACHING 70 KILOMETRES PER HOUR OR ABOVE MAY
CONTINUE TO AFFECT HONG KONG. MEMBERS OF PUBLIC SHOULD SEEK
SAFE SHELTER AS SOON AS POSSIBLE.

 

PLEASE BE REMINDED THAT:

 

THE AMBER RAINSTORM WARNING SIGNAL HAS BEEN ISSUED.
THE THUNDERSTORM WARNING HAS BEEN ISSUED. IT WILL REMAIN
EFFECTIVE UNTIL 4:30 A.M. TODAY. A FEW SQUALLY
THUNDERSTORMS ARE EXPECTED TO OCCUR OVER HONG KONG.
THE SPECIAL ANNOUNCEMENT OF FLOODING IN NORTHERN NEW
TERRITORIES HAS BEEN ISSUED.

 

THE AIR TEMPERATURES AT OTHER PLACES WERE:

 

KING'S PARK                 28 DEGREES;
WONG CHUK HANG              28 DEGREES;
TA KWU LING                 25 DEGREES;
LAU FAU SHAN                24 DEGREES;
TAI PO                      25 DEGREES;
SHA TIN                     27 DEGREES;
TUEN MUN                    25 DEGREES;
TSEUNG KWAN O               27 DEGREES;
SAI KUNG                    28 DEGREES;
CHEUNG CHAU                 27 DEGREES;
CHEK LAP KOK                26 DEGREES;
TSING YI                    26 DEGREES;
SHEK KONG                   24 DEGREES;
TSUEN WAN HO KOON           24 DEGREES;
TSUEN WAN SHING MUN VALLEY  26 DEGREES;
HONG KONG PARK              28 DEGREES;
SHAU KEI WAN                27 DEGREES;
KOWLOON CITY                28 DEGREES;
HAPPY VALLEY                28 DEGREES;
WONG TAI SIN                28 DEGREES;
STANLEY                     27 DEGREES;
KWUN TONG                   28 DEGREES;
SHAM SHUI PO                29 DEGREES;
KAI TAK RUNWAY PARK         29 DEGREES;
YUEN LONG PARK              25 DEGREES;
TAI MEI TUK                 25 DEGREES.

 

BETWEEN 0:45 AND 1:45 A.M., LIGHTNING WAS DETECTED WITHIN 
NEW TERRITORIES EAST, NEW TERRITORIES WEST AND LANTAU. THE
RAINFALL RECORDED IN VARIOUS REGIONS WERE:

 

 
TAI PO                           0 TO 36 MM;
TUEN MUN                        17 TO 34 MM;
NORTH DISTRICT                   4 TO 33 MM;
YUEN LONG                        1 TO 23 MM;
TSUEN WAN                        0 TO 18 MM;
ISLANDS DISTRICT                 0 TO 11 MM.

DISPATCHED BY HONG KONG OBSERVATORY AT 02:31 HKT ON 21.05.2026