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 07.05.2022
YESTERDAY'S WEATHER AND RADIATION LEVEL:
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HONG KONG OBSERVATORY
MAXIMUM AIR TEMPERATURE 28.9 C
MINIMUM AIR TEMPERATURE 23.4 C
GRASS MINIMUM TEMPERATURE 21.6 C
RELATIVE HUMIDITY 63 - 85 PERCENT
RAINFALL 0 MM
TOTAL RAINFALL SINCE 1ST JANUARY 324.6 MM
AGAINST AN AVERAGE OF 344.9 MM
OTHER STATIONS MIN MAX
KING'S PARK 22.2 C 27.5 C
WONG CHUK HANG 21.4 C 28.3 C
TA KWU LING 21.6 C 30.5 C
LAU FAU SHAN 20.9 C 28.3 C
TAI PO 21.9 C 28.8 C
SHA TIN 22.4 C 28.5 C
TUEN MUN 22.2 C 29.2 C
TSEUNG KWAN O 22.6 C 28.4 C
SAI KUNG 22.2 C 28.0 C
CHEUNG CHAU 21.6 C 27.3 C
CHEK LAP KOK 23.1 C 29.8 C
TSING YI 23.2 C 29.2 C
SHEK KONG 20.2 C 30.5 C
TSUEN WAN HO KOON 19.6 C 27.6 C
TSUEN WAN SHING MUN VALLEY 20.0 C 29.5 C
HONG KONG PARK 22.9 C 27.7 C
SHAU KEI WAN 22.4 C 27.2 C
KOWLOON CITY 21.7 C 28.4 C
HAPPY VALLEY 23.3 C 30.1 C
WONG TAI SIN 21.6 C 28.5 C
STANLEY 23.0 C 28.7 C
KWUN TONG 22.1 C 27.0 C
SHAM SHUI PO 22.3 C 29.2 C
KAI TAK RUNWAY PARK 23.2 C 26.5 C
YUEN LONG PARK 20.6 C 30.3 C
TAI MEI TUK 21.7 C 30.1 C
DURATION OF SUNSHINE (KING'S PARK): 10.8 H
THE MEAN UV INDEX RECORDED AT KING'S PARK YESTERDAY WAS 5,
THE UV INTENSITY WAS MODERATE.
THE MAXIMUM UV INDEX FOR YESTERDAY WAS 10.
SEA SURFACE TEMPERATURE (WAGLAN ISLAND): NO DATA
YESTERDAY'S (6 MAY 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 0.10
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 0.14
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 00:15 HKT ON 07.05.2022
Ends/Saturday, May 7, 2022
Issued at HKT 0:15
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