PRESS WEATHER NO. 006 - HKO READINGS & RADIATION LEVEL
HKO READINGS & RADIATION LEVEL
YESTERDAY'S WEATHER AND RADIATION LEVEL:
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HONG KONG OBSERVATORY
MAXIMUM AIR TEMPERATURE 25.0 C
MINIMUM AIR TEMPERATURE 22.2 C
GRASS MINIMUM TEMPERATURE 20.9 C
RELATIVE HUMIDITY 73 - 85 PERCENT
RAINFALL TRACE
TOTAL RAINFALL SINCE 1ST JANUARY 1810.2 MM
AGAINST AN AVERAGE OF 2372.0 MM
OTHER STATIONS MIN MAX
KING'S PARK 21.2 C 26.5 C
WONG CHUK HANG 21.5 C 26.6 C
TA KWU LING 20.4 C 27.5 C
LAU FAU SHAN 20.1 C 29.0 C
TAI PO 21.3 C 24.3 C
SHA TIN 20.9 C 25.7 C
TUEN MUN 20.9 C 27.9 C
TSEUNG KWAN O 20.1 C 26.0 C
SAI KUNG 21.1 C 24.2 C
CHEUNG CHAU 21.7 C 26.2 C
CHEK LAP KOK 22.1 C 28.4 C
TSING YI 20.6 C 27.4 C
SHEK KONG 19.4 C 27.0 C
TSUEN WAN HO KOON 19.3 C 26.7 C
TSUEN WAN SHING MUN VALLEY 20.4 C 28.7 C
HONG KONG PARK 21.9 C 25.9 C
SHAU KEI WAN 21.4 C 24.7 C
KOWLOON CITY 21.2 C 26.7 C
HAPPY VALLEY 22.0 C 26.8 C
WONG TAI SIN 21.5 C 27.2 C
STANLEY 21.4 C 24.7 C
KWUN TONG 21.3 C 26.0 C
SHAM SHUI PO 21.4 C 28.2 C
KAI TAK RUNWAY PARK 22.0 C 25.6 C
YUEN LONG PARK 19.5 C 27.8 C
DURATION OF SUNSHINE (KING'S PARK): 6.3 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): 23.7 C
YESTERDAY'S (2 DEC 2015) AVERAGE AMBIENT GAMMA RADIATION
DOSE RATE TAKEN OUTDOORS IN HONG KONG RANGED FROM 0.08 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 0.08
TAP MUN 0.09
KAT O 0.10
YUEN NG FAN 0.12
TAI MEI TUK 0.13
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 0.14
CHEK LAP KOK 0.15
NOTE
1. FROM READINGS TAKEN AT VARIOUS LOCATIONS IN HONG KONG DURING
THE PERIOD 1987-2014, THE BACKGROUND AMBIENT GAMMA RADIATION
LEVELS MAY VARY BETWEEN 0.06 AND 0.30 MICROSIEVERT PER HOUR.
2. THE EXTENT OF HEALTH EFFECTS TO A PERSON AS A RESULT OF
EXPOSURE TO RADIATION IS EXPRESSED BY A PHYSICAL QUANTITY
CALLED EQUIVALENT DOSE, IN UNIT OF SIEVERT. PROTECTIVE
ACTION MAY BE REQUIRED IF THERE IS AN INCREASE IN THE
AMBIENT GAMMA DOSE RATE ABOVE BACKGROUND SUCH THAT THE TOTAL
ADDITIONAL DOSE IS EXPECTED TO EXCEED 5000 MICROSIEVERTS IN
A RELATIVELY SHORT PERIOD OF TIME. FOR EXAMPLE, A DOSE OF
5000 MICROSIEVERTS MAY BE REACHED WHEN THE AMBIENT GAMMA
DOSE RATE IS 1000 MICROSIEVERTS PER HOUR (SEVERAL THOUSAND
TIMES ABOVE BACKGROUND) AND LASTS FOR 5 HOURS.
3. THE READINGS OF AMBIENT GAMMA RADIATION LEVEL FROM
INSTRUMENT ARE EXPRESSED IN UNIT OF GRAY, WHICH IS
NUMERICALLY EQUAL TO THE GAMMA DOSE EXPRESSED IN SIEVERT.
DISPATCHED BY HONG KONG OBSERVATORY AT 00:20 HKT ON 03.12.2015
Ends/Thursday, December 3, 2015
Issued at HKT 0:21
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