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PRESS WEATHER NO. 005 - 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 30.3 C
MINIMUM AIR TEMPERATURE 28.9 C
GRASS MINIMUM TEMPERATURE 27.9 C
RELATIVE HUMIDITY 81 - 90 PERCENT
RAINFALL 3.9 MM
TOTAL RAINFALL SINCE 1ST JANUARY 1133.4 MM
AGAINST AN AVERAGE OF 1419.5 MM
 
OTHER STATIONS MIN MAX
KING'S PARK 28.2 C 29.8 C
WONG CHUK HANG 28.6 C 30.2 C
TA KWU LING 25.5 C 32.3 C
LAU FAU SHAN 27.5 C 32.4 C
TAI PO 27.3 C 31.3 C
SHA TIN 28.7 C 30.5 C
TUEN MUN 28.2 C 31.1 C
TSEUNG KWAN O 28.1 C 29.9 C
SAI KUNG 28.2 C 31.2 C
CHEUNG CHAU 27.4 C 29.1 C
CHEK LAP KOK 29.5 C 32.4 C
TSING YI 28.0 C 30.3 C
SHEK KONG NO DATA NO DATA
TSUEN WAN HO KOON 27.3 C 29.2 C
TSUEN WAN SHING MUN VALLEY 28.0 C 30.4 C
HONG KONG PARK 28.1 C 30.0 C
SHAU KEI WAN 28.2 C 30.0 C
KOWLOON CITY 27.7 C 29.4 C
HAPPY VALLEY 28.9 C 30.3 C
WONG TAI SIN 28.4 C 30.4 C
STANLEY 27.9 C 29.5 C
KWUN TONG 28.1 C 29.7 C
SHAM SHUI PO 28.2 C 30.1 C
KAI TAK RUNWAY PARK 28.8 C 30.4 C
YUEN LONG PARK 28.3 C 32.5 C
TAI MEI TUK 26.4 C 29.8 C
 
DURATION OF SUNSHINE (KING'S PARK): 0.0 H
 
THE MEAN UV INDEX RECORDED AT KING'S PARK YESTERDAY WAS
0.9, THE UV INTENSITY WAS LOW.
THE MAXIMUM UV INDEX FOR YESTERDAY WAS 3.
SEA SURFACE TEMPERATURE (WAGLAN ISLAND): 26.7 C
 
YESTERDAY'S (26 JUL 2024) AVERAGE AMBIENT GAMMA RADIATION
DOSE RATE TAKEN OUTDOORS IN HONG KONG RANGED FROM 0.09 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 0.11
TAP MUN 0.10
KAT O 0.10
YUEN NG FAN 0.12
TAI MEI TUK 0.12
SHA TAU KOK 0.11
KWUN TONG 0.13
SAI WAN HO 0.09
KING'S PARK 0.15
TSIM BEI TSUI 0.13
CAPE D'AGUILAR 0.12
CHEK LAP KOK 0.15

 
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.
 
5. THE RANGE OF RELATIVE HUMIDITY IN THE DAILY WEATHER SUMMARY
ORIGINATES FROM THE OBSERVER'S REPORTS OF HOURLY READINGS
OF THE DAY. THIS FOLLOWS THE LONG-TERM PRACTICE OF COLLECTING
CLIMATOLOGICAL DATA OF THE HONG KONG OBSERVATORY FOR OVER A
CENTURY. IT MAY DIFFER FROM THE RELATIVE HUMIDITY RANGE
DERIVED FROM THE 1-MINUTE REPORTS OF THE AUTOMATIC WEATHER
STATION.


DISPATCHED BY HONG KONG OBSERVATORY AT 00:19 HKT ON 27.07.2024

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