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 15.05.2023
YESTERDAY'S WEATHER AND RADIATION LEVEL:
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HONG KONG OBSERVATORY
MAXIMUM AIR TEMPERATURE 23.1 C
MINIMUM AIR TEMPERATURE 20.2 C
GRASS MINIMUM TEMPERATURE 20.5 C
RELATIVE HUMIDITY 86 - 96 PERCENT
RAINFALL 39.9 MM
TOTAL RAINFALL SINCE 1ST JANUARY 292.7 MM
AGAINST AN AVERAGE OF 421.4 MM
OTHER STATIONS MIN MAX
KING'S PARK 19.6 C 22.8 C
WONG CHUK HANG 19.7 C 22.7 C
TA KWU LING 20.3 C 22.6 C
LAU FAU SHAN 19.5 C 22.0 C
TAI PO 20.2 C 22.3 C
SHA TIN 20.5 C 23.0 C
TUEN MUN 19.3 C 21.5 C
TSEUNG KWAN O 19.7 C 22.4 C
SAI KUNG 20.2 C 22.7 C
CHEUNG CHAU 18.9 C 21.0 C
CHEK LAP KOK 19.5 C 23.4 C
TSING YI 19.2 C 21.8 C
SHEK KONG 19.4 C 21.8 C
TSUEN WAN HO KOON 19.0 C 21.0 C
TSUEN WAN SHING MUN VALLEY 19.3 C 21.6 C
HONG KONG PARK 19.5 C 22.2 C
SHAU KEI WAN 19.3 C 22.2 C
KOWLOON CITY 19.2 C 22.5 C
HAPPY VALLEY 19.9 C 23.3 C
WONG TAI SIN 20.0 C 22.7 C
STANLEY 19.4 C 22.3 C
KWUN TONG 19.2 C 22.4 C
SHAM SHUI PO 19.2 C 22.6 C
KAI TAK RUNWAY PARK 19.8 C 23.2 C
YUEN LONG PARK 19.4 C 22.1 C
TAI MEI TUK 19.8 C 22.3 C
DURATION OF SUNSHINE (KING'S PARK): 0 H
THE MEAN UV INDEX RECORDED AT KING'S PARK YESTERDAY WAS 1,
THE UV INTENSITY WAS LOW.
THE MAXIMUM UV INDEX FOR YESTERDAY WAS 2.
SEA SURFACE TEMPERATURE (WAGLAN ISLAND): NO DATA
YESTERDAY'S (14 MAY 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 0.13
SAI WAN HO 0.10
KING'S PARK 0.14
TSIM BEI TSUI 0.13
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 15.05.2023
Ends/Monday, May 15, 2023
Issued at HKT 0:15
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