PRESS WEATHER NO. 006 - 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 33.1 C
MINIMUM AIR TEMPERATURE 29.5 C
GRASS MINIMUM TEMPERATURE 28.1 C
RELATIVE HUMIDITY 69 - 86 PERCENT
RAINFALL TRACE
TOTAL RAINFALL SINCE 1ST JANUARY 1129.5 MM
AGAINST AN AVERAGE OF 1410.9 MM
 
OTHER STATIONS MIN MAX
KING'S PARK 28.9 C 33.1 C
WONG CHUK HANG 29.5 C 33.3 C
TA KWU LING 29.1 C 35.9 C
LAU FAU SHAN 28.9 C 36.7 C
TAI PO 30.0 C 35.9 C
SHA TIN 30.1 C 34.4 C
TUEN MUN 29.6 C 33.7 C
TSEUNG KWAN O 29.3 C 34.5 C
SAI KUNG 30.5 C 35.1 C
CHEUNG CHAU NO DATA NO DATA
CHEK LAP KOK 29.8 C 34.7 C
TSING YI 29.5 C 34.6 C
SHEK KONG NO DATA NO DATA
TSUEN WAN HO KOON 27.9 C 34.3 C
TSUEN WAN SHING MUN VALLEY 29.1 C 35.0 C
HONG KONG PARK 29.6 C 32.9 C
SHAU KEI WAN 29.7 C 32.8 C
KOWLOON CITY 29.1 C 33.6 C
HAPPY VALLEY 29.9 C 34.7 C
WONG TAI SIN 29.4 C 34.9 C
STANLEY 29.1 C 32.1 C
KWUN TONG 29.2 C 33.6 C
SHAM SHUI PO 29.4 C 34.0 C
KAI TAK RUNWAY PARK 29.8 C 34.2 C
YUEN LONG PARK 29.6 C 36.4 C
TAI MEI TUK 28.7 C 35.1 C
 
DURATION OF SUNSHINE (KING'S PARK): 10.1 H
 
THE MEAN UV INDEX RECORDED AT KING'S PARK YESTERDAY WAS 4,
THE UV INTENSITY WAS MODERATE.
THE MAXIMUM UV INDEX FOR YESTERDAY WAS 10.
SEA SURFACE TEMPERATURE (WAGLAN ISLAND): 26.5 C
 
YESTERDAY'S (25 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 0.10
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 0.13
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 00:22 HKT ON 26.07.2024

Ends/Friday, July 26, 2024
Issued at HKT 0:22

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