HKO READINGS & RADIATION LEVEL

YESTERDAY'S WEATHER AND RADIATION LEVEL:
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HONG KONG OBSERVATORY
MAXIMUM AIR TEMPERATURE                       30.4 C
MINIMUM AIR TEMPERATURE                       24.4 C
GRASS MINIMUM TEMPERATURE                     23.1 C
RELATIVE HUMIDITY                          71 - 90 PERCENT
RAINFALL                                       3.6 MM
TOTAL RAINFALL SINCE 1ST JANUARY             233.1 MM
AGAINST AN AVERAGE OF                        453.7 MM
 
OTHER STATIONS                MIN                  MAX
KING'S PARK                  23.6 C               30.1 C
WONG CHUK HANG               23.7 C               29.7 C
TA KWU LING                  23.1 C               31.0 C
LAU FAU SHAN                 22.8 C               31.2 C
TAI PO                       22.5 C               28.6 C
SHA TIN                      23.6 C               30.8 C
TUEN MUN                     22.7 C               30.6 C
TSEUNG KWAN O                22.8 C               29.8 C
SAI KUNG                     24.1 C               30.5 C
CHEUNG CHAU                  22.8 C               31.6 C
CHEK LAP KOK                 24.7 C               30.8 C
TSING YI                     22.9 C               30.8 C
SHEK KONG                    22.6 C               31.0 C
TSUEN WAN HO KOON            21.8 C               29.7 C
TSUEN WAN SHING MUN VALLEY   22.6 C               30.5 C
HONG KONG PARK               NO DATA             NO DATA
SHAU KEI WAN                 NO DATA             NO DATA
KOWLOON CITY                 23.6 C               31.2 C
HAPPY VALLEY                 23.6 C               31.9 C
WONG TAI SIN                 23.5 C               30.5 C
STANLEY                      24.7 C               30.0 C
KWUN TONG                    23.7 C               30.5 C
SHAM SHUI PO                 23.5 C               32.0 C
KAI TAK RUNWAY PARK          23.8 C               29.7 C
YUEN LONG PARK               23.1 C               31.6 C
TAI MEI TUK                  23.0 C               31.3 C
 
DURATION OF SUNSHINE (KING'S PARK):              3.1 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 8.
SEA SURFACE TEMPERATURE (WAGLAN ISLAND):     NO DATA
 
YESTERDAY'S (12 MAY 2020) 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                               0.11
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 00:38 HKT ON 13.05.2020