HKO READINGS & RADIATION LEVEL

YESTERDAY'S WEATHER AND RADIATION LEVEL:
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HONG KONG OBSERVATORY
MAXIMUM AIR TEMPERATURE                       20.9 C
MINIMUM AIR TEMPERATURE                       18.0 C
GRASS MINIMUM TEMPERATURE                     16.3 C
RELATIVE HUMIDITY                          61 - 82 PERCENT
RAINFALL                                     TRACE
TOTAL RAINFALL SINCE 1ST JANUARY            2152.3 MM
AGAINST AN AVERAGE OF                       2383.7 MM
 
OTHER STATIONS                MIN                  MAX
KING'S PARK                  17.4 C               21.3 C
WONG CHUK HANG               17.9 C               23.0 C
TA KWU LING                  15.3 C               19.9 C
LAU FAU SHAN                 15.4 C               19.3 C
TAI PO                       15.3 C               19.3 C
SHA TIN                      15.9 C               20.0 C
TUEN MUN                     16.0 C               19.1 C
TSEUNG KWAN O                16.0 C               22.3 C
SAI KUNG                     17.0 C               20.5 C
CHEUNG CHAU                  16.1 C               22.4 C
CHEK LAP KOK                 16.5 C               19.5 C
TSING YI                     17.2 C               21.0 C
SHEK KONG                    15.3 C               20.1 C
TSUEN WAN HO KOON            15.3 C               19.0 C
TSUEN WAN SHING MUN VALLEY   16.3 C               20.6 C
HONG KONG PARK               18.2 C               21.7 C
SHAU KEI WAN                 17.6 C               23.2 C
KOWLOON CITY                 16.8 C               21.4 C
HAPPY VALLEY                 18.2 C               22.8 C
WONG TAI SIN                 16.9 C               21.1 C
STANLEY                      18.0 C               22.6 C
KWUN TONG                    17.1 C               22.7 C
SHAM SHUI PO                 NO DATA             NO DATA
KAI TAK RUNWAY PARK          17.6 C               22.2 C
YUEN LONG PARK               15.8 C               19.4 C
TAI MEI TUK                  16.0 C               21.2 C
 
DURATION OF SUNSHINE (KING'S PARK):              1.2 H
 
THE MEAN UV INDEX RECORDED AT KING'S PARK YESTERDAY WAS 2,
THE UV INTENSITY WAS LOW.
THE MAXIMUM UV INDEX FOR YESTERDAY WAS 4.
SEA SURFACE TEMPERATURE (WAGLAN ISLAND):     NO DATA
 
YESTERDAY'S (16 DEC 2018) AVERAGE AMBIENT GAMMA RADIATION
DOSE RATE TAKEN OUTDOORS IN HONG KONG RANGED FROM 0.09 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                             0.09
KAT O                               0.10
YUEN NG FAN                         0.12
TAI MEI TUK                         0.12
SHA TAU KOK                         0.11
KWUN TONG                           0.13
SAI WAN HO                          0.10
KING'S PARK                         0.15
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 00:20 HKT ON 17.12.2018