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Bulletin issued at 11:06 HKT 28/Aug/2018

At 11 a.m. at the Hong Kong Observatory the air temperature was 28 degrees Celsius and the relative humidity 88 per cent.
During the past hour the mean UV Index recorded at King's Park was 4. The intensity of UV radiation was moderate.

Bands of thundery showers now to the southwest of Hong Kong are gradually edging towards the Pearl River Estuary and may affect the territory in the next couple of hours. Members of the public should be on the alert.

The air temperatures at other places were:

King's Park 29 degrees;
Wong Chuk Hang 28 degrees;
Ta Kwu Ling 28 degrees;
Lau Fau Shan 28 degrees;
Tai Po 27 degrees;
Sha Tin 29 degrees;
Tuen Mun 29 degrees;
Tseung Kwan O 27 degrees;
Sai Kung 27 degrees;
Cheung Chau 27 degrees;
Chek Lap Kok 29 degrees;
Tsing Yi 28 degrees;
Shek Kong 29 degrees;
Tsuen Wan Ho Koon 26 degrees;
Tsuen Wan Shing Mun Valley 27 degrees;
Hong Kong Park 27 degrees;
Shau Kei Wan 27 degrees;
Kowloon City 28 degrees;
Happy Valley 29 degrees;
Wong Tai Sin 28 degrees;
Stanley 27 degrees;
Kwun Tong 29 degrees;
Sham Shui Po 29 degrees;
Kai Tak Runway Park 28 degrees;
Yuen Long Park 29 degrees;
Tai Mei Tuk 27 degrees.

Between 9:45 and 10:45 a.m., the rainfall recorded in various regions were:

Yuen Long 0 to 4 mm;
Wong Tai Sin 1 to 4 mm;
Tai Po 0 to 4 mm;
North District 0 to 3 mm;
Sai Kung 0 to 2 mm;
Tsuen Wan 0 to 1 mm;
Sham Shui Po 0 to 1 mm;
Kowloon City 0 to 1 mm;
Kwun Tong 0 to 1 mm.


Note: The data above is provisional. Only limited data validation has been carried out.


Climatological Information for 28 Aug

Regional Weather in Hong Kong

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Bulletin updated at 10:45 HKT 28/Aug/2018

Here is the latest weather bulletin issued by the Hong Kong Observatory.

A trough of low pressure is bringing showers to the coast of Guangdong and the northern part of the South China Sea.

Weather forecast for today

Mainly cloudy with occasional showers and a few thunderstorms. Showers will be heavy at times. Moderate south to southwesterly winds, occasionally fresh offshore.

Outlook : Heavy showers and squally thunderstorms in the next couple of days. Showers easing off gradually towards the weekend.


(The above forecast period is valid up to 23:59 HKT today, 28/08/2018; Regular update at : around 45 minutes past each hour, 16:15 HKT and 23:15 HKT)

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MARINE FORECAST
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Marine Forecast

Weather Information for the Marine Community

Bulletin issued at 09:00 HKT 28/Aug/2018

GALE WARNING AREAS: KWANGTUNG AND TAIWAN STRAIT.

GENERAL SITUATION AT 272100 UTC:
TROUGH 21N 109E 23N 114E 24N 119E QSTNR.

MARINE FORECAST FOR 24 HOURS FROM 280100 UTC:

HONG KONG= S TO SW 4-5, BEC 6. DOWN TO 1000 M IN SCT HEAVY SQUALLY SHOWERS AND TS. SEA UP TO 2 M, BEC 3 M. SWELL SW UP TO 2 M. TEMP 29-25 C. =
KWANGTUNG= SW 6-7, OCNL 8 IN E. DOWN TO 1000 M IN SCT HEAVY SQUALLY SHOWERS AND TS. SEA 3-4 M, UP TO 6 M IN E. SWELL SW 2-3 M. =
TAIWAN STRAIT= S 7-8. DOWN TO 1000 M IN SCT HEAVY SQUALLY SHOWERS AND TS. SEA 4-6 M. SWELL S TO SW 2-3 M. =
BASHI= S TO SW 6-7. DOWN TO 1000 M IN SCT HEAVY SQUALLY SHOWERS AND TS. SEA 3-4 M. SWELL S TO SW 2-3 M. =
PRATAS= S TO SW 6-7. DOWN TO 1000 M IN SCT HEAVY SQUALLY SHOWERS AND TS. SEA 3-4 M. SWELL SW 2-3 M. =
BALINTANG= S TO SW 6-7. DOWN TO 1000 M IN SCT HEAVY SQUALLY SHOWERS AND TS. SEA 3-4 M. SWELL S TO SW 2-3 M. =
SCARBOROUGH= S TO SW 6-7. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 3-4 M. SWELL SW 2-3 M. =
PARACEL= SW 6-7. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 3-4 M. SWELL SW 2-3 M. =
TONKIN= W TO SW 5-6, OCNL 7. DOWN TO 1000 M IN SCT HEAVY SQUALLY SHOWERS AND TS. SEA UP TO 4 M. SWELL S 2 M. =
DANANG= SW 5-6, OCNL 7. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 4 M. SWELL SW 2 M. =
NNNN
Abbreviations:
KT, VRB, SLW, FRQ - knot, variable, slow, frequent STNR, QSTNR, C - stationary, quasi-stationary, degrees celsius WKN, INTSF, INTST, NC - weaken, intensify, intensity, no change LGT, ISOL, SCT, OCNL - light, isolated, scattered, occasional CLD, DZ, TS - cloudy, drizzle, thunderstorm

The date and time are specified by a 6-digit number DDHHMM. DD stands for the day of month, HH represents the hour while MM indicates the minute in UTC.


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    • SOUTH CHINA COASTAL WATERS
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    South China Coastal Waters

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    9-day Weather Forecast | UV Index Forecast | Weather Information for Fishermen

    Bulletin issued at 09:30 HKT 28/Aug/2018

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 9:30 a.m. on 28 August 2018

    Warnings:
    Gale force winds in Nan'ao. Strong winds in Hong Kong adjacent waters, Shanwei, south of Hong Kong and Shangchuan Dao.

    Weather Situation:
    A trough of low pressure is bringing unsettled weather to the south China coastal waters.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    South to southwest force 4 to 5, becoming force 6.
    Scattered heavy squally showers and thunderstorms.
    Moderate seas, becoming rough.

    Nan'ao:
    Southwest force 6 to 7, occasionally force 8.
    Scattered heavy squally showers and thunderstorms.
    Rough to very rough seas.

    Shanwei, South of Hong Kong and Shangchuan Dao:
    Southwest force 6 to 7.
    Scattered heavy squally showers and thunderstorms.
    Rough seas.

    Outlook for the next 48 hours
    Southwesterly winds of force 6 to 7, up to force 8 in east. Scattered heavy squally showers and thunderstorms.

    Latest reports from south China coastal weather stations
    --------------------------------------------------------

    Waglan Island Wind calm
      Visibility 8 Kilometres

    Shantou Wind northeast force 1
      Visibility 9 Kilometres in showers

    Dongsha Wind south-southwest force 4
      Visibility 9 Kilometres in rain

    Huangmaozhou Wind west force 4

    Macau Wind north-northeast force 1
      Visibility 4900 Metres in mist

    Xisha Wind southwest force 5
      Visibility 16 Kilometres

  • Explanation of Seas or Sea Waves
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    • WEATHER FORECAST FOR LOCAL AVIATION
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    Weather Forecast for Local Aviation

    Bulletin issued at 09:30 HKT 28/AUG/2018
    (Next update at 12:30 HKT 28/AUG/2018)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     ISOL CUNIM/TS AND ASSOCIATED HAZARDS.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     A TROUGH OF LOW PRESSURE IS BRINGING SHOWERS TO
     THE COAST OF GUANGDONG AND THE NORTHERN PART OF
     THE SOUTH CHINA SEA.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1000 TO 2000 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  200/10
                  TEMPO VRB/20G30 IN TS
       OFFSHORE:  200/15-20                            27-29
   B.   2000 FT:  220/15-20                            23
   C.   5000 FT:  240/20                               19
   D.  10000 FT:  230/15                               11
   E.  18000 FT:  060/10                               1
   F.  24000 FT:  090/15                               MS11
   G.  30000 FT:  050/15                               MS23
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      MAINLY CLOUDY WITH OCCASIONAL SHOWERS AND A FEW
      THUNDERSTORMS. SHOWERS WILL BE HEAVY AT TIMES
      LATER.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1500 FT  SCT 3000 FT  BKN 8000 FT.  TEMPO
      FEW CB 800 FT  SCT 1500 FT  BKN 4000 FT.
   K. VISIBILITY    : 7 KM.  TEMPO 3000 M IN SHOWERS. TEMPO 2000 M IN TS.
   L. 0 DEG. C LEVEL: 18500 FT      10 DEG. C LEVEL(S) : 10800 FT
   M. TURBULENCE    : MOD TO SEV NEAR CUNIM/TS.  MOD OFFSHORE AND NEAR HILLS.
   N. SEA STATE     : 1.5-2.5 M     SEA TEMPERATURE    : 26 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE SOUTH TO SOUTHWESTERLY WINDS, FRESH
     OFFSHORE.  CLOUDY WITH HEAVY SHOWERS AND
     OCCASIONAL SQUALLY THUNDERSTORMS.=

    ===================================================================
Note: The forecast could be updated before the next issue time 
whenever there is newly expected occurrence or non-occurrence 
of significant weather as described below which may be hazardous 
to aircraft within 100-km radius of Hong Kong:

(a) Change of the tropical cyclone category
(b) Strong, Gale, Storm, and Hurricane force winds
(c) Thunderstorm/CBs
(d) Severe gusts
(e) Severe turbulence
(f) Significant low stratus
(g) Fog or thick haze/sandstorm/duststorm 
    causing significant reduction of visibility
(h) Volcanic ash
(i) Radioactive cloud
===================================================================
    Aviation Weather Observation and Forecast Information for Hong Kong International Airport
    To know more about clouds, please see Commonly observed clouds in Hong Kong.

    sigmet
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    Significant Weather Information (SIGMET)

    The Airport Meteorological Office is responsible for monitoring hazardous weather and phenomena in the atmosphere that may affect the safety of aircraft operations within a designated airspace over the northern part of the South China Sea. Weather forecasters at the Airport Meteorological Office issues SIGMET information when hazardous weather and phenomena in the atmosphere such as thunderstorms, tropical cyclones, turbulence, icing occur or are expected to occur in the airspace.

    The latest significant weather information
    issued by the Hong Kong Observatory at 10:29 HKT on 28 Aug 18

    VHHK SIGMET 1 VALID 280230/280630 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N2100 E11730 - N1642 E11400 - N1754 E11254 - N2000 E11318 - N2130 E11130 - N2400 E11730 - N2100 E11730 TOP FL480 STNR NC= VHHK SIGMET 7 VALID 272230/280230 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N2100 E11730 - N1800 E11506 - N1806 E11306 - N2054 E11130 - N2130 E11130 - N2400 E11730 - N2100 E11730 TOP FL450 STNR NC=

    Please click here for more about the SIGMET

    Tropical Cyclone Warning
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    Tropical Cyclone Warning

    There is no tropical cyclone warning signal.

    For other tropical cyclone related information, please visit the World Meteorological Organization Web Site - Severe Weather Information Centre.

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    TROPICAL CYCLONE WARNING FOR SHIPPING
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    Tropical Cyclone Warning for Shipping

    There is no tropical cyclone warning for shipping*.




    *Tropical cyclone warnings for shipping are issued by the Hong Kong Observatory for tropical cyclones located within the area bounded by 105E and 125E , 10N and 30N.




    For other tropical cyclone related information, please visit the World Meteorological Organization Web Site - Severe Weather Information Centre.

    YESTERDAY'S WEATHER AND RADIATION LEVEL Skip to main content
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    Yesterday's Weather and Radiation Level

    Bulletin issued at 00:15 HKT 28/Aug/2018 
    HKO Readings & Radiation Level

Yesterday's Weather and Radiation Level:
------------------------------------------------------

Hong Kong Observatory
Maximum Air Temperature                     29.9 C
Minimum Air Temperature                     25.2 C
Grass Minimum Temperature                   24.5 C
Relative Humidity                        74 - 95 Percent
Rainfall                                    27.3 mm 
Total rainfall since 1st January          1481.6 mm
Against an average of                     1869.6 mm

Other Stations                Min                  Max
King's Park                  24.7 C               30.2 C
Wong Chuk Hang               24.5 C               28.9 C
Ta Kwu Ling                  24.8 C               29.6 C
Lau Fau Shan                 23.9 C               28.6 C
Tai Po                       24.9 C               29.6 C
Sha Tin                      25.1 C               30.8 C
Tuen Mun                     24.5 C               29.1 C
Tseung Kwan O                24.5 C               30.0 C
Sai Kung                     24.9 C               29.7 C
Cheung Chau                  24.3 C               28.4 C
Chek Lap Kok                 25.0 C               30.6 C
Tsing Yi                     24.7 C               29.7 C
Shek Kong                    24.7 C               30.2 C
Tsuen Wan Ho Koon            24.0 C               27.7 C
Tsuen Wan Shing Mun Valley   24.5 C               29.5 C
Hong Kong Park               24.3 C               29.1 C
Shau Kei Wan                 24.6 C               30.5 C
Kowloon City                 24.5 C               30.6 C
Happy Valley                 24.9 C               30.5 C
Wong Tai Sin                 24.8 C               30.0 C
Stanley                      24.5 C               29.0 C
Kwun Tong                    24.7 C               30.7 C
Sham Shui Po                 24.7 C               30.3 C
Kai Tak Runway Park          24.7 C               31.1 C
Yuen Long Park               24.5 C               29.4 C
Tai Mei Tuk               24.5 C               30.3 C

Duration of sunshine (King's Park):              1.8 H
The mean UV index recorded at King's Park yesterday was 2,
the UV intensity was Low.
The maximum UV index for yesterday was 7.
 

Yesterday's (27 Aug 2018) 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                             0.10
Kat O                               0.10
Yuen Ng Fan                         0.13
Tai Mei Tuk                         0.12
Sha Tau Kok                         0.11
Kwun Tong                           0.13
Sai Wan Ho                          0.09
King's Park                         0.15
Tsim Bei Tsui                       0.14
Cape D'Aguilar                      0.14
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.
    Climatological Information for 27 Aug
     2003copy right image | Important notices | Privacy policy Last revision date: <28 Aug 2018> 

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