HKO READINGS & RADIATION LEVEL

YESTERDAY'S WEATHER AND RADIATION LEVEL:
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HONG KONG OBSERVATORY
MAXIMUM AIR TEMPERATURE                       28.8 C
MINIMUM AIR TEMPERATURE                       23.5 C
GRASS MINIMUM TEMPERATURE                     22.6 C
RELATIVE HUMIDITY                          63 - 82 PERCENT
RAINFALL                                         0 MM
TOTAL RAINFALL SINCE 1ST JANUARY            2382.7 MM
AGAINST AN AVERAGE OF                       2319.5 MM
 
OTHER STATIONS                MIN                  MAX
KING'S PARK                  22.8 C               28.5 C
WONG CHUK HANG               20.7 C               27.8 C
TA KWU LING                  19.2 C               29.8 C
LAU FAU SHAN                 21.1 C               28.6 C
TAI PO                       21.3 C               27.6 C
SHA TIN                      20.6 C               28.3 C
TUEN MUN                     21.9 C               29.5 C
TSEUNG KWAN O                21.2 C               28.1 C
SAI KUNG                     22.5 C               27.4 C
CHEUNG CHAU                  22.0 C               28.9 C
CHEK LAP KOK                 22.9 C               28.8 C
TSING YI                     23.4 C               28.4 C
SHEK KONG                    19.8 C               30.4 C
TSUEN WAN HO KOON            20.3 C               27.6 C
TSUEN WAN SHING MUN VALLEY   20.4 C               29.9 C
HONG KONG PARK               22.4 C               28.6 C
SHAU KEI WAN                 22.6 C               27.2 C
KOWLOON CITY                 22.8 C               28.7 C
HAPPY VALLEY                 21.4 C               28.3 C
WONG TAI SIN                 22.3 C               27.8 C
STANLEY                      24.3 C               27.6 C
KWUN TONG                    22.9 C               27.4 C
SHAM SHUI PO                 NO DATA             NO DATA
KAI TAK RUNWAY PARK          24.1 C               27.3 C
YUEN LONG PARK               19.9 C               30.8 C
TAI MEI TUK                  22.3 C               29.6 C
 
DURATION OF SUNSHINE (KING'S PARK):              8.5 H
 
THE MEAN UV INDEX RECORDED AT KING'S PARK YESTERDAY WAS 3,
THE UV INTENSITY WAS MODERATE.
THE MAXIMUM UV INDEX FOR YESTERDAY WAS 7.
SEA SURFACE TEMPERATURE (WAGLAN ISLAND):     NO DATA
 
YESTERDAY'S (21 OCT 2019) AVERAGE AMBIENT GAMMA RADIATION
DOSE RATE TAKEN OUTDOORS IN HONG KONG RANGED FROM 0.09 TO
0.14 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                               0.11
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                        0.14

 
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 00:28 HKT ON 22.10.2019