PRESS WEATHER NO. 006 - HKO READINGS & RADIATION LEVEL
******************************************************
HKO READINGS & RADIATION LEVEL
DISPATCHED BY HONG KONG OBSERVATORY AT 00:17 HKT ON 25.08.2017
YESTERDAY'S WEATHER AND RADIATION LEVEL:
------------------------------------------------------
HONG KONG OBSERVATORY
MAXIMUM AIR TEMPERATURE 31.5 C
MINIMUM AIR TEMPERATURE 27.3 C
GRASS MINIMUM TEMPERATURE 26.0 C
RELATIVE HUMIDITY 79 - 90 PERCENT
RAINFALL TRACE
TOTAL RAINFALL SINCE 1ST JANUARY 1974.4 MM
AGAINST AN AVERAGE OF 1836.6 MM
OTHER STATIONS MIN MAX
KING'S PARK 27.2 C 31.8 C
WONG CHUK HANG 28.0 C 32.1 C
TA KWU LING 26.4 C 33.5 C
LAU FAU SHAN 26.8 C 33.0 C
TAI PO 27.3 C 30.6 C
SHA TIN 28.8 C 32.3 C
TUEN MUN 27.6 C 32.3 C
TSEUNG KWAN O 26.9 C 31.6 C
SAI KUNG 27.2 C 30.8 C
CHEUNG CHAU 25.2 C 31.7 C
CHEK LAP KOK 25.7 C 33.4 C
TSING YI 28.0 C 33.8 C
SHEK KONG 27.8 C 33.7 C
TSUEN WAN HO KOON 26.0 C 30.5 C
TSUEN WAN SHING MUN VALLEY 27.4 C 32.8 C
HONG KONG PARK 28.0 C 32.4 C
SHAU KEI WAN 26.8 C 30.8 C
KOWLOON CITY 27.3 C 32.0 C
HAPPY VALLEY 28.0 C 32.1 C
WONG TAI SIN 27.4 C 31.7 C
STANLEY 27.2 C 32.2 C
KWUN TONG 27.5 C 31.7 C
SHAM SHUI PO 28.0 C 32.9 C
KAI TAK RUNWAY PARK 27.1 C 30.3 C
YUEN LONG PARK 28.4 C 34.0 C
TAI MEI TUK NO DATA NO DATA
DURATION OF SUNSHINE (KING'S PARK): 7.0 H
THE MEAN UV INDEX RECORDED AT KING'S PARK YESTERDAY WAS 5,
THE UV INTENSITY WAS MODERATE.
THE MAXIMUM UV INDEX FOR YESTERDAY WAS 11.
SEA SURFACE TEMPERATURE (WAGLAN ISLAND): NO DATA
YESTERDAY'S (24 AUG 2017) AVERAGE AMBIENT GAMMA RADIATION
DOSE RATE TAKEN OUTDOORS IN HONG KONG RANGED FROM 0.07 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 0.07
TAP MUN 0.08
KAT O 0.08
YUEN NG FAN 0.11
TAI MEI TUK 0.11
SHA TAU KOK 0.10
KWUN TONG 0.11
SAI WAN HO 0.09
KING'S PARK 0.14
TSIM BEI TSUI 0.12
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 25.08.2017
Ends/Friday, August 25, 2017
Issued at HKT 0:17
NNNN