PRESS WEATHER NO. 004 - HKO READINGS & RADIATION LEVEL
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HKO READINGS & RADIATION LEVEL
DISPATCHED BY HONG KONG OBSERVATORY AT 00:22 HKT ON 25.02.2023
YESTERDAY'S WEATHER AND RADIATION LEVEL:
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HONG KONG OBSERVATORY
MAXIMUM AIR TEMPERATURE 23.4 C
MINIMUM AIR TEMPERATURE 17.0 C
GRASS MINIMUM TEMPERATURE 14.8 C
RELATIVE HUMIDITY 50 - 84 PERCENT
RAINFALL 0 MM
TOTAL RAINFALL SINCE 1ST JANUARY 19.8 MM
AGAINST AN AVERAGE OF 67.7 MM
OTHER STATIONS MIN MAX
KING'S PARK 15.9 C 22.7 C
WONG CHUK HANG 15.3 C 22.4 C
TA KWU LING 14.1 C 26.0 C
LAU FAU SHAN 14.3 C 25.1 C
TAI PO 14.5 C 24.8 C
SHA TIN 14.8 C 25.5 C
TUEN MUN 15.4 C 25.1 C
TSEUNG KWAN O 14.3 C 25.1 C
SAI KUNG 14.7 C 22.5 C
CHEUNG CHAU 15.0 C 24.0 C
CHEK LAP KOK 16.8 C 24.2 C
TSING YI 15.4 C 23.8 C
SHEK KONG 13.2 C 26.5 C
TSUEN WAN HO KOON 12.9 C 23.4 C
TSUEN WAN SHING MUN VALLEY 13.7 C 25.7 C
HONG KONG PARK 15.8 C 23.9 C
SHAU KEI WAN 15.6 C 21.9 C
KOWLOON CITY 15.0 C 25.3 C
HAPPY VALLEY 16.1 C 26.1 C
WONG TAI SIN 15.7 C 25.7 C
STANLEY 16.1 C 22.2 C
KWUN TONG 15.5 C 24.4 C
SHAM SHUI PO 15.7 C 24.7 C
KAI TAK RUNWAY PARK 16.5 C 23.2 C
YUEN LONG PARK 13.6 C 26.4 C
TAI MEI TUK 15.3 C 26.7 C
DURATION OF SUNSHINE (KING'S PARK): 10.3 H
THE MEAN UV INDEX RECORDED AT KING'S PARK YESTERDAY WAS 3,
THE UV INTENSITY WAS MODERATE.
THE MAXIMUM UV INDEX FOR YESTERDAY WAS 6.
SEA SURFACE TEMPERATURE (WAGLAN ISLAND): NO DATA
YESTERDAY'S (24 FEB 2023) 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 0.12
SAI WAN HO 0.09
KING'S PARK 0.14
TSIM BEI TSUI 0.12
CAPE D'AGUILAR 0.13
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 25.02.2023
Ends/Saturday, February 25, 2023
Issued at HKT 0:22
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