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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 22.9 C
MINIMUM AIR TEMPERATURE 19.0 C
GRASS MINIMUM TEMPERATURE 16.7 C
RELATIVE HUMIDITY 70 - 88 PERCENT
RAINFALL 0 MM
TOTAL RAINFALL SINCE 1ST JANUARY 2386.6 MM
AGAINST AN AVERAGE OF 2389.4 MM
 
OTHER STATIONS MIN MAX
KING'S PARK 18.1 C 23.1 C
WONG CHUK HANG 17.1 C 23.2 C
TA KWU LING 16.2 C 24.2 C
LAU FAU SHAN 16.8 C 25.1 C
TAI PO 17.6 C 21.7 C
SHA TIN 17.0 C 23.0 C
TUEN MUN 18.1 C 24.2 C
TSEUNG KWAN O 16.2 C 22.0 C
SAI KUNG 17.4 C 21.3 C
CHEUNG CHAU 17.1 C 24.6 C
CHEK LAP KOK 19.0 C 24.9 C
TSING YI 18.3 C 24.1 C
SHEK KONG 16.7 C 24.6 C
TSUEN WAN HO KOON 16.3 C 23.5 C
TSUEN WAN SHING MUN VALLEY 17.1 C 25.7 C
HONG KONG PARK 18.2 C 22.3 C
SHAU KEI WAN 17.9 C 21.4 C
KOWLOON CITY 17.8 C 24.9 C
HAPPY VALLEY 17.4 C 23.1 C
WONG TAI SIN 18.5 C 23.2 C
STANLEY 18.0 C 21.5 C
KWUN TONG 17.9 C 21.9 C
SHAM SHUI PO 18.2 C 24.0 C
KAI TAK RUNWAY PARK 18.9 C 21.4 C
YUEN LONG PARK 16.6 C 25.5 C
TAI MEI TUK 17.7 C 24.4 C
 
DURATION OF SUNSHINE (KING'S PARK): 7.7 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 (25 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 0.12
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 0.14

 
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 00:15 HKT ON 26.12.2019

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