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Yesterday's Weather and Radiation Level

Bulletin issued at 00:15 HKT 10/Dec/2018
HKO Readings & Radiation Level

Yesterday's Weather and Radiation Level:
------------------------------------------------------

Hong Kong Observatory
Maximum Air Temperature                     18.3 C
Minimum Air Temperature                     16.4 C
Grass Minimum Temperature                   16.6 C
Relative Humidity                        71 - 82 Percent
Rainfall                                      Trace 
Total rainfall since 1st January          2152.1 mm
Against an average of                     2377.4 mm

Other Stations                Min                  Max
King's Park                  15.5 C               17.8 C
Wong Chuk Hang               16.3 C               18.1 C
Ta Kwu Ling                  12.3 C               14.4 C
Lau Fau Shan                 12.5 C               15.0 C
Tai Po                       12.3 C               14.6 C
Sha Tin                      14.0 C               16.5 C
Tuen Mun                     13.3 C               15.1 C
Tseung Kwan O                14.9 C               17.7 C
Cheung Chau                  14.7 C               17.5 C
Chek Lap Kok                 14.3 C               16.6 C
Tsing Yi                     15.4 C               18.0 C
Shek Kong                    12.8 C               15.5 C
Tsuen Wan Ho Koon            12.7 C               15.9 C
Tsuen Wan Shing Mun Valley   14.4 C               17.5 C
Hong Kong Park               16.3 C               18.2 C
Shau Kei Wan                 15.6 C               18.5 C
Kowloon City                 14.7 C               17.7 C
Happy Valley                 16.4 C               18.4 C
Wong Tai Sin                 14.6 C               17.9 C
Stanley                      16.3 C               18.6 C
Kwun Tong                    15.2 C               18.3 C
Sham Shui Po                 14.6 C               17.5 C
Kai Tak Runway Park          15.8 C               18.7 C
Yuen Long Park               12.1 C               14.6 C
Tai Mei Tuk               13.7 C               16.6 C

Duration of sunshine (King's Park):              0.5 H
The mean UV index recorded at King's Park yesterday was 0.9,
the UV intensity was Low.
The maximum UV index for yesterday was 3.
 

Yesterday's (09 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                           
Tap Mun                             0.09
Kat O                               0.10
Yuen Ng Fan                         0.12
Tai Mei Tuk                         0.12
Sha Tau Kok                         0.10
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.
Climatological Information for 09 Dec
Last revision date: <10 Dec 2018>