HKO READINGS & RADIATION LEVEL

YESTERDAY'S WEATHER AND RADIATION LEVEL:
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HONG KONG OBSERVATORY
MAXIMUM AIR TEMPERATURE                       34.9 C
MINIMUM AIR TEMPERATURE                       28.7 C
GRASS MINIMUM TEMPERATURE                     27.5 C
RELATIVE HUMIDITY                          61 - 85 PERCENT
RAINFALL                                     TRACE
TOTAL RAINFALL SINCE 1ST JANUARY             963.4 MM
AGAINST AN AVERAGE OF                       1096.9 MM
 
OTHER STATIONS                MIN                  MAX
KING'S PARK                  28.1 C               33.6 C
WONG CHUK HANG               27.5 C               32.2 C
TA KWU LING                  26.5 C               35.0 C
LAU FAU SHAN                 27.8 C               33.3 C
TAI PO                       27.3 C               35.2 C
SHA TIN                      28.1 C               34.3 C
TUEN MUN                     27.5 C               33.2 C
TSEUNG KWAN O                26.9 C               34.0 C
SAI KUNG                     27.8 C               33.1 C
CHEUNG CHAU                  26.3 C               35.9 C
CHEK LAP KOK                 28.6 C               35.0 C
TSING YI                     27.1 C               33.0 C
SHEK KONG                    NO DATA             NO DATA
TSUEN WAN HO KOON            26.5 C               32.0 C
TSUEN WAN SHING MUN VALLEY   27.3 C               33.1 C
HONG KONG PARK               27.4 C               32.5 C
SHAU KEI WAN                 26.9 C               32.9 C
KOWLOON CITY                 28.0 C               34.8 C
HAPPY VALLEY                 27.6 C               33.5 C
WONG TAI SIN                 28.4 C               33.8 C
STANLEY                      27.7 C               32.7 C
KWUN TONG                    29.4 C               36.5 C
SHAM SHUI PO                 28.1 C               34.2 C
KAI TAK RUNWAY PARK          27.7 C               33.7 C
YUEN LONG PARK               28.1 C               34.7 C
TAI MEI TUK                  27.4 C               35.5 C
 
DURATION OF SUNSHINE (KING'S PARK):              9.4 H
 
THE MEAN UV INDEX RECORDED AT KING'S PARK YESTERDAY WAS 6,
THE UV INTENSITY WAS HIGH.
THE MAXIMUM UV INDEX FOR YESTERDAY WAS 12.
SEA SURFACE TEMPERATURE (WAGLAN ISLAND):     NO DATA
 
YESTERDAY'S (30 JUN 2020) AVERAGE AMBIENT GAMMA RADIATION
DOSE RATE TAKEN OUTDOORS IN HONG KONG RANGED FROM 0.08 TO
0.15 MICROSIEVERT PER HOUR.  THESE ARE WITHIN THE NORMAL
RANGE OF FLUCTUATION OF THE BACKGROUND RADIATION LEVEL IN
HONG KONG (SEE NOTE). THE AVERAGE DOSE RATES MEASURED AT
THE RADIATION MONITORING STATIONS OVER VARIOUS PARTS OF THE
TERRITORY WERE AS FOLLOWS :
 
STATION                     YESTERDAY'S AVERAGE
                            (MICROSIEVERT/HOUR)
PING CHAU                           0.09
TAP MUN                             0.08
KAT O                               0.11
YUEN NG FAN                         0.12
TAI MEI TUK                         0.11
SHA TAU KOK                         0.10
KWUN TONG                           0.12
SAI WAN HO                          0.09
KING'S PARK                         0.14
TSIM BEI TSUI                       0.13
CAPE D'AGUILAR                      0.13
CHEK LAP KOK                        0.15

 
NOTE
1.     FROM READINGS TAKEN AT VARIOUS LOCATIONS IN HONG KONG IN THE
       PAST, THE HOURLY MEAN AMBIENT GAMMA RADIATION DOSE RATE MAY 
       VARY BETWEEN 0.06 AND 0.3 MICROSIEVERT PER HOUR. 
       (1 MICROSIEVERT = 0.000001 SIEVERT = 0.001 MILLISIEVERT)
 
2.     TEMPORAL VARIATIONS ARE GENERALLY CAUSED BY CHANGES IN
       METEOROLOGICAL CONDITIONS SUCH AS RAINFALL, WIND AND 
       BAROMETRIC PRESSURE.
 
3.     SPATIAL VARIATIONS ARE GENERALLY CAUSED BY DIFFERENCES IN 
       THE RADIOACTIVE CONTENT OF LOCAL ROCK AND SOIL.
 
4.     THE DATA DISPLAYED IS PROVISIONAL. ONLY LIMITED DATA 
       VALIDATION HAS BEEN CARRIED OUT.

DISPATCHED BY HONG KONG OBSERVATORY AT 00:16 HKT ON 01.07.2020