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PRESS WEATHER NO. 004 - 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 21.6 C
MINIMUM AIR TEMPERATURE 10.6 C
GRASS MINIMUM TEMPERATURE 10.2 C
RELATIVE HUMIDITY 38 - 74 PERCENT
RAINFALL 0 MM
TOTAL RAINFALL SINCE 1ST JANUARY 2395.0 MM
AGAINST AN AVERAGE OF 2396.8 MM
 
OTHER STATIONS MIN MAX
KING'S PARK 9.4 C 21.6 C
WONG CHUK HANG 10.6 C 21.7 C
TA KWU LING 8.1 C 20.5 C
LAU FAU SHAN 9.4 C 21.1 C
TAI PO 9.1 C 21.1 C
SHA TIN 9.7 C 22.4 C
TUEN MUN 9.5 C 20.8 C
TSEUNG KWAN O 9.2 C 20.9 C
SAI KUNG 9.3 C 21.9 C
CHEUNG CHAU 9.4 C 19.4 C
CHEK LAP KOK 10.3 C 20.7 C
TSING YI 10.0 C 22.4 C
SHEK KONG 8.9 C 20.8 C
TSUEN WAN HO KOON 7.6 C 21.0 C
TSUEN WAN SHING MUN VALLEY 8.9 C 20.8 C
HONG KONG PARK 10.4 C 21.8 C
SHAU KEI WAN 9.5 C 21.9 C
KOWLOON CITY 9.0 C 22.3 C
HAPPY VALLEY 10.7 C 22.1 C
WONG TAI SIN 9.6 C 21.8 C
STANLEY 10.2 C 21.5 C
KWUN TONG 8.9 C 21.4 C
SHAM SHUI PO 9.5 C 22.7 C
KAI TAK RUNWAY PARK 10.0 C 22.3 C
YUEN LONG PARK 9.2 C 20.8 C
TAI MEI TUK 8.4 C 21.5 C
 
DURATION OF SUNSHINE (KING'S PARK): 9.5 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 (30 DEC 2020) 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 0.12
TAI MEI TUK 0.11
SHA TAU KOK 0.10
KWUN TONG 0.12
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 00:24 HKT ON 31.12.2020

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