HOURLY READINGS


 

AT 8 A.M. AT THE HONG KONG OBSERVATORY THE AIR TEMPERATURE
WAS 27 DEGREES CELSIUS AND THE RELATIVE HUMIDITY 94 PER
CENT.
DURING THE PAST HOUR THE MEAN UV INDEX RECORDED AT KING'S
PARK WAS 0.1. THE INTENSITY OF UV RADIATION WAS LOW.

 

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.

 

PLEASE BE REMINDED THAT:

 

THE AMBER RAINSTORM WARNING SIGNAL HAS BEEN ISSUED.
THE THUNDERSTORM WARNING HAS BEEN ISSUED. IT WILL REMAIN
EFFECTIVE UNTIL 11:30 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                 27 DEGREES;
WONG CHUK HANG              27 DEGREES;
TA KWU LING                 25 DEGREES;
LAU FAU SHAN                25 DEGREES;
TAI PO                      25 DEGREES;
SHA TIN                     25 DEGREES;
TUEN MUN                    25 DEGREES;
TSEUNG KWAN O               27 DEGREES;
SAI KUNG                    26 DEGREES;
CHEUNG CHAU                 26 DEGREES;
CHEK LAP KOK                28 DEGREES;
TSING YI                    27 DEGREES;
SHEK KONG                   25 DEGREES;
TSUEN WAN HO KOON           26 DEGREES;
TSUEN WAN SHING MUN VALLEY  26 DEGREES;
HONG KONG PARK              27 DEGREES;
SHAU KEI WAN                27 DEGREES;
KOWLOON CITY                27 DEGREES;
HAPPY VALLEY                27 DEGREES;
WONG TAI SIN                26 DEGREES;
STANLEY                     27 DEGREES;
KWUN TONG                   27 DEGREES;
SHAM SHUI PO                27 DEGREES;
KAI TAK RUNWAY PARK         28 DEGREES;
YUEN LONG PARK              25 DEGREES;
TAI MEI TUK                 25 DEGREES.

 

BETWEEN 6:45 AND 7:45 A.M., LIGHTNING WAS DETECTED OVER ALL
REGIONS. THE RAINFALL RECORDED IN VARIOUS REGIONS WERE:

 

 
TAI PO                           6 TO 42 MM;
NORTH DISTRICT                   2 TO 29 MM;
TSUEN WAN                        1 TO 29 MM;
YUEN LONG                        0 TO 26 MM;
SAI KUNG                         0 TO 16 MM;
TUEN MUN                         1 TO 10 MM;
SHA TIN                           1 TO 9 MM;
KWAI TSING                        0 TO 2 MM;
WONG TAI SIN                      1 TO 2 MM;
CENTRAL & WESTERN DISTRICT        0 TO 1 MM;
EASTERN DISTRICT                  0 TO 1 MM;
ISLANDS DISTRICT                  0 TO 1 MM;
WAN CHAI                          0 TO 1 MM;
YAU TSIM MONG                          1 MM;
SHAM SHUI PO                      0 TO 1 MM;
KOWLOON CITY                      0 TO 1 MM;
KWUN TONG                              1 MM.

DISPATCHED BY HONG KONG OBSERVATORY AT 08:02 HKT ON 21.05.2026