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PRESS WEATHER NO. 006 - HKO READINGS & RADIATION LEVEL
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HKO READINGS & RADIATION LEVEL

YESTERDAY'S WEATHER AND RADIATION LEVEL:
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HONG KONG OBSERVATORY
MAXIMUM AIR TEMPERATURE 22.0 C
MINIMUM AIR TEMPERATURE 18.0 C
GRASS MINIMUM TEMPERATURE 15.3 C
RELATIVE HUMIDITY 61 - 86 PERCENT
RAINFALL 0 MM
TOTAL RAINFALL SINCE 1ST JANUARY 2384.4 MM
AGAINST AN AVERAGE OF 2381.4 MM
 
OTHER STATIONS MIN MAX
KING'S PARK 17.3 C 22.0 C
WONG CHUK HANG 16.2 C 23.1 C
TA KWU LING 15.9 C 24.1 C
LAU FAU SHAN 15.7 C 25.9 C
TAI PO 16.0 C 22.7 C
SHA TIN 16.1 C 23.2 C
TUEN MUN 17.3 C 23.5 C
TSEUNG KWAN O 15.8 C 22.4 C
SAI KUNG 16.2 C 20.4 C
CHEUNG CHAU 15.8 C 23.6 C
CHEK LAP KOK 18.6 C 24.9 C
TSING YI 17.2 C 25.0 C
SHEK KONG 14.7 C 24.3 C
TSUEN WAN HO KOON 15.1 C 24.2 C
TSUEN WAN SHING MUN VALLEY 15.1 C 24.6 C
HONG KONG PARK 16.9 C 23.1 C
SHAU KEI WAN 16.8 C 20.6 C
KOWLOON CITY 17.0 C 24.1 C
HAPPY VALLEY 16.7 C 23.0 C
WONG TAI SIN 17.1 C 23.4 C
STANLEY 17.3 C 21.1 C
KWUN TONG 17.1 C 22.0 C
SHAM SHUI PO 17.5 C 24.2 C
KAI TAK RUNWAY PARK 18.1 C 21.1 C
YUEN LONG PARK 15.2 C 25.4 C
TAI MEI TUK 16.5 C 24.3 C
 
DURATION OF SUNSHINE (KING'S PARK): 7.3 H
 
THE MEAN UV INDEX RECORDED AT KING'S PARK YESTERDAY WAS 2,
THE UV INTENSITY WAS LOW.
THE MAXIMUM UV INDEX FOR YESTERDAY WAS 5.
SEA SURFACE TEMPERATURE (WAGLAN ISLAND): NO DATA
 
YESTERDAY'S (13 DEC 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 00:20 HKT ON 14.12.2019

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