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Yesterday's Weather and Radiation Level

Bulletin issued at 00:15 HKT 18/Oct/2019

HKO Readings & Radiation level

Yesterday's Weather and Radiation Level:
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Hong Kong Observatory
Maximum Air Temperature                     29.7 C
Minimum Air Temperature                     23.9 C
Grass Minimum Temperature                   23.3 C
Relative Humidity                        53 - 80 Percent
Rainfall                                       0 mm 
Total rainfall since 1st January          2379.2 mm
Against an average of                     2306.7 mm

Other Stations                Min                  Max
King's Park                  23.5 C               28.7 C
Wong Chuk Hang               23.7 C               29.4 C
Ta Kwu Ling                  19.8 C               29.4 C
Lau Fau Shan                 21.6 C               29.7 C
Tai Po                       22.0 C               27.6 C
Sha Tin                      22.3 C               29.2 C
Tuen Mun                     22.3 C               29.7 C
Tseung Kwan O                21.7 C               29.8 C
Sai Kung                     23.7 C               28.0 C
Cheung Chau                  22.5 C               29.5 C
Chek Lap Kok                 24.1 C               30.3 C
Tsing Yi                     23.0 C               29.8 C
Shek Kong                    20.8 C               30.1 C
Tsuen Wan Ho Koon            20.9 C               27.7 C
Tsuen Wan Shing Mun Valley   22.1 C               29.6 C
Hong Kong Park               23.6 C               29.6 C
Shau Kei Wan                 22.9 C               29.9 C
Kowloon City                 22.9 C               29.1 C
Happy Valley                 23.5 C               30.5 C
Wong Tai Sin                 23.3 C               30.2 C
Stanley                      23.7 C               29.7 C
Kwun Tong                    22.7 C               29.4 C
Sham Shui Po                 22.9 C               30.6 C
Kai Tak Runway Park          23.6 C               29.6 C
Yuen Long Park               21.4 C               30.9 C
Tai Mei Tuk               21.4 C                      

Duration of sunshine (King's Park):              10.4 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.

Yesterday's (17 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                           0.13
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.

Yesterday's Radiation Level Yesterday's Radiation Level
Climatological Information for 17 Oct Climatological Information for 17 October
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