PRESS WEATHER NO. 006 - HKO READINGS & RADIATION LEVEL
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HKO READINGS & RADIATION LEVEL
DISPATCHED BY HONG KONG OBSERVATORY AT 00:17 HKT ON 25.02.2017
YESTERDAY'S WEATHER AND RADIATION LEVEL:
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HONG KONG OBSERVATORY
MAXIMUM AIR TEMPERATURE 15.1 C
MINIMUM AIR TEMPERATURE 12.0 C
GRASS MINIMUM TEMPERATURE 14.1 C
RELATIVE HUMIDITY 76 - 89 PERCENT
RAINFALL TRACE
TOTAL RAINFALL SINCE 1ST JANUARY 25.6 MM
AGAINST AN AVERAGE OF 71.1 MM
OTHER STATIONS MIN MAX
KING'S PARK 10.8 C 14.0 C
WONG CHUK HANG 11.8 C 15.1 C
TA KWU LING 9.6 C 11.7 C
LAU FAU SHAN 10.0 C 12.0 C
TAI PO 10.0 C 12.3 C
SHA TIN 10.1 C 12.7 C
TUEN MUN 10.5 C 12.7 C
TSEUNG KWAN O 10.9 C 13.2 C
SAI KUNG 10.8 C 12.9 C
CHEUNG CHAU 10.8 C 13.0 C
CHEK LAP KOK 10.7 C 13.3 C
TSING YI 11.1 C 14.0 C
SHEK KONG 9.9 C 12.0 C
TSUEN WAN HO KOON 9.3 C 11.6 C
TSUEN WAN SHING MUN VALLEY 11.1 C 13.3 C
HONG KONG PARK 11.9 C 15.0 C
SHAU KEI WAN 11.0 C 13.4 C
KOWLOON CITY 10.3 C 13.4 C
HAPPY VALLEY 12.0 C 15.4 C
WONG TAI SIN 10.6 C 13.2 C
STANLEY 11.8 C 14.3 C
KWUN TONG 11.1 C 13.9 C
SHAM SHUI PO 11.4 C 13.6 C
KAI TAK RUNWAY PARK 11.4 C 15.1 C
YUEN LONG PARK 10.0 C 12.4 C
TAI MEI TUK 9.9 C 12.5 C
DURATION OF SUNSHINE (KING'S PARK): 0 H
THE MEAN UV INDEX RECORDED AT KING'S PARK YESTERDAY WAS
0.5, THE UV INTENSITY WAS LOW.
THE MAXIMUM UV INDEX FOR YESTERDAY WAS 1.
SEA SURFACE TEMPERATURE (WAGLAN ISLAND): NO DATA
YESTERDAY'S (24 FEB 2017) 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 0.12
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 0.14
NOTE
1. FROM READINGS TAKEN AT VARIOUS LOCATIONS IN HONG KONG DURING
THE PERIOD 1987-2016, 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 00:17 HKT ON 25.02.2017
Ends/Saturday, February 25, 2017
Issued at HKT 0:17
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