PRESS WEATHER NO. 006 - HKO READINGS & RADIATION LEVEL
HKO READINGS & RADIATION LEVEL
YESTERDAY'S WEATHER AND RADIATION LEVEL:
------------------------------------------------------
HONG KONG OBSERVATORY
MAXIMUM AIR TEMPERATURE 18.1 C
MINIMUM AIR TEMPERATURE 15.4 C
GRASS MINIMUM TEMPERATURE 16.5 C
RELATIVE HUMIDITY 65 - 93 PERCENT
RAINFALL 1.0 MM
TOTAL RAINFALL SINCE 1ST JANUARY 1826.9 MM
AGAINST AN AVERAGE OF 2373.8 MM
OTHER STATIONS MIN MAX
KING'S PARK 14.5 C 17.5 C
WONG CHUK HANG 15.9 C 18.6 C
TA KWU LING 13.3 C 16.9 C
LAU FAU SHAN 13.3 C 17.2 C
TAI PO 13.8 C 16.8 C
SHA TIN 13.8 C 16.9 C
TUEN MUN 13.9 C 17.1 C
TSEUNG KWAN O 14.2 C 17.5 C
SAI KUNG 14.4 C 17.3 C
CHEUNG CHAU 13.8 C 16.4 C
CHEK LAP KOK 14.3 C 18.1 C
TSING YI 14.8 C 17.7 C
SHEK KONG 13.3 C 16.6 C
TSUEN WAN HO KOON 12.9 C 16.0 C
TSUEN WAN SHING MUN VALLEY 14.7 C 18.0 C
HONG KONG PARK 15.3 C 18.1 C
SHAU KEI WAN 14.5 C 17.9 C
KOWLOON CITY 14.0 C 17.4 C
HAPPY VALLEY 15.9 C 18.6 C
WONG TAI SIN 14.5 C 17.7 C
STANLEY 15.3 C 18.4 C
KWUN TONG 14.4 C 18.1 C
SHAM SHUI PO 15.0 C 18.0 C
KAI TAK RUNWAY PARK NO DATA NO DATA
YUEN LONG PARK 13.6 C 17.2 C
DURATION OF SUNSHINE (KING'S PARK): 0.1 H
THE MEAN UV INDEX RECORDED AT KING'S PARK YESTERDAY WAS 1,
THE UV INTENSITY WAS LOW.
THE MAXIMUM UV INDEX FOR YESTERDAY WAS 3.
SEA SURFACE TEMPERATURE (WAGLAN ISLAND): 22.2 C
YESTERDAY'S (6 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 0.11
YUEN NG FAN 0.12
TAI MEI TUK 0.13
SHA TAU KOK 0.10
KWUN TONG 0.12
SAI WAN HO 0.10
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 00:15 HKT ON 07.12.2015
Ends/Monday, December 7, 2015
Issued at HKT 0:16
NNNN