PRESS WEATHER NO. 004 - HKO READINGS & RADIATION LEVEL
******************************************************

HKO READINGS & RADIATION LEVEL

YESTERDAY'S WEATHER AND RADIATION LEVEL:
------------------------------------------------------
 
HONG KONG OBSERVATORY
MAXIMUM AIR TEMPERATURE 23.8 C
MINIMUM AIR TEMPERATURE 18.4 C
GRASS MINIMUM TEMPERATURE 15.5 C
RELATIVE HUMIDITY 50 - 84 PERCENT
RAINFALL TRACE
TOTAL RAINFALL SINCE 1ST JANUARY 32.3 MM
AGAINST AN AVERAGE OF 105.1 MM
 
OTHER STATIONS MIN MAX
KING'S PARK 17.3 C 23.0 C
WONG CHUK HANG 17.4 C 23.2 C
TA KWU LING 15.2 C 24.5 C
LAU FAU SHAN 15.9 C 28.3 C
TAI PO 17.1 C 22.6 C
SHA TIN 16.6 C 22.6 C
TUEN MUN 17.3 C 23.5 C
TSEUNG KWAN O 16.2 C 22.8 C
SAI KUNG 16.0 C 21.1 C
CHEUNG CHAU 17.2 C 23.0 C
CHEK LAP KOK 18.4 C 24.6 C
TSING YI 17.8 C 24.3 C
SHEK KONG 17.9 C 25.9 C
TSUEN WAN HO KOON 15.6 C 23.9 C
TSUEN WAN SHING MUN VALLEY 16.5 C 24.9 C
HONG KONG PARK 17.5 C 22.4 C
SHAU KEI WAN 17.8 C 20.8 C
KOWLOON CITY 16.7 C 23.7 C
HAPPY VALLEY 17.9 C 24.4 C
WONG TAI SIN 17.6 C 23.0 C
STANLEY 17.9 C 22.1 C
KWUN TONG 17.1 C 21.3 C
SHAM SHUI PO 17.3 C 24.2 C
KAI TAK RUNWAY PARK 18.4 C 23.0 C
YUEN LONG PARK 16.3 C 26.7 C
TAI MEI TUK 15.9 C 23.6 C
 
DURATION OF SUNSHINE (KING'S PARK): 10.6 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 8.
SEA SURFACE TEMPERATURE (WAGLAN ISLAND): 20.7 C
 
YESTERDAY'S (21 MAR 2024) 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 0.09
KING'S PARK 0.15
TSIM BEI TSUI 0.13
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 22.03.2024

Ends/Friday, March 22, 2024
Issued at HKT 0:15

NNNN