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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 30.9 C
MINIMUM AIR TEMPERATURE 26.1 C
GRASS MINIMUM TEMPERATURE 25.3 C
RELATIVE HUMIDITY 81 - 94 PERCENT
RAINFALL 5.5 MM
TOTAL RAINFALL SINCE 1ST JANUARY 1434.0 MM
AGAINST AN AVERAGE OF 1561.5 MM
 
OTHER STATIONS MIN MAX
KING'S PARK 25.3 C 30.8 C
WONG CHUK HANG 25.1 C 31.2 C
TA KWU LING 24.7 C 32.7 C
LAU FAU SHAN 24.5 C 31.8 C
TAI PO 25.1 C 30.8 C
SHA TIN 25.8 C 31.7 C
TUEN MUN 25.2 C 30.8 C
TSEUNG KWAN O 25.3 C 31.5 C
SAI KUNG 25.3 C 30.9 C
CHEUNG CHAU 24.8 C 28.5 C
CHEK LAP KOK 26.6 C 32.4 C
TSING YI 25.2 C 31.7 C
SHEK KONG 24.4 C 31.2 C
TSUEN WAN HO KOON 24.3 C 29.6 C
TSUEN WAN SHING MUN VALLEY 24.5 C 31.5 C
HONG KONG PARK 25.2 C 29.6 C
SHAU KEI WAN 25.2 C 29.6 C
KOWLOON CITY 25.2 C 32.0 C
HAPPY VALLEY 25.6 C 31.2 C
WONG TAI SIN 25.3 C 31.6 C
STANLEY 25.7 C 31.1 C
KWUN TONG 25.7 C 30.6 C
SHAM SHUI PO 25.8 C 31.3 C
KAI TAK RUNWAY PARK 25.9 C 31.5 C
YUEN LONG PARK 24.2 C 32.5 C
TAI MEI TUK 25.1 C 30.8 C
 
DURATION OF SUNSHINE (KING'S PARK): 5.3 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 11.
SEA SURFACE TEMPERATURE (WAGLAN ISLAND): NO DATA
 
YESTERDAY'S (6 AUG 2022) AVERAGE AMBIENT GAMMA RADIATION
DOSE RATE TAKEN OUTDOORS IN HONG KONG RANGED FROM 0.08 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 0.09
TAP MUN 0.08
KAT O 0.09
YUEN NG FAN 0.11
TAI MEI TUK 0.11
SHA TAU KOK 0.09
KWUN TONG 0.12
SAI WAN HO 0.09
KING'S PARK 0.13
TSIM BEI TSUI 0.12
CAPE D'AGUILAR 0.12
CHEK LAP KOK 0.14

 
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 00:16 HKT ON 07.08.2022

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