PRESS WEATHER NO. 006 - HKO READINGS & RADIATION LEVEL
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HKO READINGS & RADIATION LEVEL
DISPATCHED BY HONG KONG OBSERVATORY AT 00:15 HKT ON 21.02.2023
YESTERDAY'S WEATHER AND RADIATION LEVEL:
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HONG KONG OBSERVATORY
MAXIMUM AIR TEMPERATURE 24.1 C
MINIMUM AIR TEMPERATURE 18.2 C
GRASS MINIMUM TEMPERATURE 16.9 C
RELATIVE HUMIDITY 49 - 81 PERCENT
RAINFALL 0 MM
TOTAL RAINFALL SINCE 1ST JANUARY 19.8 MM
AGAINST AN AVERAGE OF 63.6 MM
OTHER STATIONS MIN MAX
KING'S PARK 17.2 C 23.7 C
WONG CHUK HANG 18.1 C 23.2 C
TA KWU LING 16.8 C 24.9 C
LAU FAU SHAN 16.8 C 24.7 C
TAI PO 17.6 C 22.9 C
SHA TIN 17.4 C 23.4 C
TUEN MUN 18.2 C 23.7 C
TSEUNG KWAN O 17.1 C 23.6 C
SAI KUNG 17.5 C 20.8 C
CHEUNG CHAU 16.6 C 23.0 C
CHEK LAP KOK 18.6 C 24.0 C
TSING YI 17.7 C 23.8 C
SHEK KONG 17.5 C 25.3 C
TSUEN WAN HO KOON 15.5 C 24.5 C
TSUEN WAN SHING MUN VALLEY 17.0 C 24.4 C
HONG KONG PARK 18.0 C 23.0 C
SHAU KEI WAN 17.1 C 20.9 C
KOWLOON CITY 17.0 C 25.1 C
HAPPY VALLEY 18.3 C 24.7 C
WONG TAI SIN 17.5 C 25.1 C
STANLEY 17.6 C 21.9 C
KWUN TONG 16.7 C 22.9 C
SHAM SHUI PO 17.8 C 24.5 C
KAI TAK RUNWAY PARK 17.7 C 23.1 C
YUEN LONG PARK 17.1 C 25.2 C
TAI MEI TUK 16.5 C 24.6 C
DURATION OF SUNSHINE (KING'S PARK): 7.9 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 7.
SEA SURFACE TEMPERATURE (WAGLAN ISLAND): NO DATA
YESTERDAY'S (20 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 00:15 HKT ON 21.02.2023
Ends/Tuesday, February 21, 2023
Issued at HKT 0:15
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