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Yesterday's Weather and Radiation Level

Bulletin issued at 00:15 HKT 19/Jul/2019

HKO Readings & Radiation level

Yesterday's Weather and Radiation Level:
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Hong Kong Observatory
Maximum Air Temperature                     35.0 C
Minimum Air Temperature                     29.6 C
Grass Minimum Temperature                   28.2 C
Relative Humidity                        63 - 84 Percent
Rainfall                                      Trace 
Total rainfall since 1st January          1272.0 mm
Against an average of                     1308.5 mm

Other Stations                Min                  Max
King's Park                  28.6 C               34.4 C
Wong Chuk Hang               28.4 C               33.4 C
Ta Kwu Ling                  26.4 C               35.7 C
Lau Fau Shan                 26.3 C               35.2 C
Tai Po                       25.9 C               34.7 C
Sha Tin                      27.7 C               35.3 C
Tuen Mun                     27.5 C               36.0 C
Tseung Kwan O                26.8 C               34.2 C
Sai Kung                     27.9 C               34.5 C
Cheung Chau                  27.5 C               34.7 C
Chek Lap Kok                 29.9 C               37.2 C
Tsing Yi                     28.6 C               34.6 C
Shek Kong                    24.8 C               34.8 C
Tsuen Wan Ho Koon            25.3 C               32.6 C
Tsuen Wan Shing Mun Valley   27.2 C               34.0 C
Hong Kong Park               28.8 C               34.6 C
Kowloon City                 29.1 C               35.3 C
Happy Valley                 29.2 C               35.5 C
Wong Tai Sin                 28.7 C               35.0 C
Stanley                      28.5 C               33.7 C
Kwun Tong                    29.3 C               34.0 C
Sham Shui Po                 28.8 C               34.6 C
Kai Tak Runway Park          28.0 C               32.8 C
Yuen Long Park               26.3 C               37.6 C
Tai Mei Tuk               26.3 C                      

Duration of sunshine (King's Park):              9.5 H
The mean UV index recorded at King's Park yesterday was 4,
the UV intensity was MODERATE.
The maximum UV index for yesterday was 8.

Yesterday's (18 Jul 2019) 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                         0.11
Tai Mei Tuk                         0.10
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                        0.15   


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.

Yesterday's Radiation Level Yesterday's Radiation Level
Climatological Information for 18 Jul Climatological Information for 18 July
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