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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 20.4 C
MINIMUM AIR TEMPERATURE 16.5 C
GRASS MINIMUM TEMPERATURE 15.0 C
RELATIVE HUMIDITY 59 - 77 PERCENT
RAINFALL TRACE
TOTAL RAINFALL SINCE 1ST JANUARY 2152.3 MM
AGAINST AN AVERAGE OF 2378.4 MM
 
OTHER STATIONS MIN MAX
KING'S PARK 15.8 C 20.7 C
WONG CHUK HANG 16.1 C 22.4 C
TA KWU LING 12.7 C 19.1 C
LAU FAU SHAN 13.0 C 18.3 C
TAI PO 13.0 C 18.1 C
SHA TIN 13.5 C 19.3 C
TUEN MUN 13.9 C 19.0 C
TSEUNG KWAN O 15.0 C 22.0 C
SAI KUNG 14.7 C 19.2 C
CHEUNG CHAU 14.2 C 21.6 C
CHEK LAP KOK 14.3 C 18.7 C
TSING YI 15.0 C 20.0 C
SHEK KONG 13.3 C 19.8 C
TSUEN WAN HO KOON 13.0 C 18.0 C
TSUEN WAN SHING MUN VALLEY 14.6 C 22.0 C
HONG KONG PARK 16.3 C 21.5 C
SHAU KEI WAN 15.1 C 21.3 C
KOWLOON CITY 14.8 C 20.7 C
HAPPY VALLEY 16.5 C 22.2 C
WONG TAI SIN 14.3 C 20.9 C
STANLEY 16.6 C 23.4 C
KWUN TONG 14.4 C 22.1 C
SHAM SHUI PO 15.5 C 21.9 C
KAI TAK RUNWAY PARK 15.1 C 21.5 C
YUEN LONG PARK 13.5 C 19.7 C
TAI MEI TUK 13.9 C 20.4 C
 
DURATION OF SUNSHINE (KING'S PARK): 4.9 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 6.
SEA SURFACE TEMPERATURE (WAGLAN ISLAND): NO DATA
 
YESTERDAY'S (11 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 0.09
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.


DISPATCHED BY HONG KONG OBSERVATORY AT 00:18 HKT ON 12.12.2018

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