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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 20.2 C
MINIMUM AIR TEMPERATURE 16.2 C
GRASS MINIMUM TEMPERATURE 12.4 C
RELATIVE HUMIDITY 44 - 75 PERCENT
RAINFALL 0 MM
TOTAL RAINFALL SINCE 1ST JANUARY 2152.3 MM
AGAINST AN AVERAGE OF 2385.1 MM
 
OTHER STATIONS MIN MAX
KING'S PARK 14.6 C 20.8 C
WONG CHUK HANG 12.6 C 20.5 C
TA KWU LING 7.0 C 22.1 C
LAU FAU SHAN 11.5 C 23.9 C
TAI PO 11.2 C 19.7 C
SHA TIN 10.1 C 21.0 C
TUEN MUN 13.9 C 22.8 C
TSEUNG KWAN O 11.6 C 21.0 C
SAI KUNG 13.5 C 19.6 C
CHEUNG CHAU 13.4 C 21.9 C
CHEK LAP KOK 14.1 C 22.6 C
TSING YI 13.6 C 21.4 C
SHEK KONG 9.7 C 22.3 C
TSUEN WAN HO KOON 11.9 C 22.0 C
TSUEN WAN SHING MUN VALLEY 11.5 C 22.0 C
HONG KONG PARK 14.9 C 21.3 C
SHAU KEI WAN 14.1 C 20.2 C
KOWLOON CITY 14.9 C 21.8 C
HAPPY VALLEY 12.6 C 20.5 C
WONG TAI SIN 14.1 C 21.3 C
STANLEY 15.6 C 19.9 C
KWUN TONG 15.0 C 20.1 C
SHAM SHUI PO 13.4 C 22.7 C
KAI TAK RUNWAY PARK 15.9 C 19.7 C
YUEN LONG PARK 9.3 C 23.6 C
TAI MEI TUK 12.9 C 21.2 C
 
DURATION OF SUNSHINE (KING'S PARK): 8.5 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 (18 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 0.09
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 00:20 HKT ON 19.12.2018

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