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Bulletin issued at 17:02 HKT 27/Aug/2018

At 5 p.m. at the Hong Kong Observatory the air temperature was 29 degrees Celsius and the relative humidity 78 per cent.
During the past hour the mean UV Index recorded at King's Park was 1. The intensity of UV radiation was low.

The air temperatures at other places were:

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


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


Climatological Information for 27 Aug

Regional Weather in Hong Kong

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Hong Kong Climatology


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Bulletin updated at 16:45 HKT 27/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 tonight and tomorrow

Mainly cloudy with occasional showers and a few squally thunderstorms. Showers will be heavy at times later tomorrow. Temperatures will range between 25 and 29 degrees. Moderate south to southwesterly winds, fresh offshore tomorrow.

Outlook : Heavy showers and squally thunderstorms in the following couple of days. Showers will ease off towards the weekend.


(The above forecast period is valid up to 23:59 HKT tomorrow, 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 27/Aug/2018

GALE WARNING AREAS: KWANGTUNG, TAIWAN STRAIT, BASHI, PRATAS, BALINTANG, SCARBOROUGH AND PARACEL.

GENERAL SITUATION AT 262100 UTC:
A SOUTHWESTERLY AIRSTREAM IS AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 270100 UTC:

HONG KONG= SW 4-5, 6 LATER. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 2 M, 3 M LATER. SWELL SW UP TO 2 M. TEMP 29-25 C. =
KWANGTUNG= W TO SW 6-7, UP TO 8 IN E LATER. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 3-4 M, UP TO 6 M LATER. SWELL SW 2-3 M. =
TAIWAN STRAIT= S TO SW 7-8. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 4-6 M. SWELL SW 2-3 M. =
BASHI= S TO SW 7-8. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 4-6 M. SWELL S TO SW 3 M. =
PRATAS= SW 6-7, OCNL 8. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA UP TO 6 M. SWELL SW 2-3 M. =
BALINTANG= S TO SW 7-8. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 4-6 M. SWELL S TO SW 3 M. =
SCARBOROUGH= S TO SW 7-8. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 4-6 M. SWELL SW 3 M. =
PARACEL= SW 6-7, OCNL 8. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA UP TO 6 M. SWELL SW 2-3 M. =
TONKIN= W TO SW 5-6, UP TO 7 LATER. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 2-3 M, UP TO 4 M LATER. SWELL S 2 M. =
DANANG= W TO SW 5-6, UP TO 7 LATER. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 2-3 M, UP TO 4 M LATER. 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.


  • Map showing the 10 forecast areas
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    • SOUTH CHINA COASTAL WATERS
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    South China Coastal Waters

    Current Weather | Local Weather Forecast | Regional Temperature Forecast in HK
    9-day Weather Forecast | UV Index Forecast | Weather Information for Fishermen

    Bulletin issued at 16:30 HKT 27/Aug/2018

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 4:30 p.m. on 27 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 squally showers and thunderstorms. Showers will be heavy at times later.
    Moderate seas, becoming rough.

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

    Shanwei:
    Southwest force 6 to 7.
    Scattered squally showers and thunderstorms.
    Rough seas.

    South of Hong Kong:
    Southwest force 5 to 6, becoming force 7.
    Scattered squally showers and thunderstorms.
    Moderate to rough seas.

    Shangchuan Dao:
    West to southwest force 5 to 6, becoming force 7.
    Isolated squally showers and thunderstorms.
    Moderate to 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 southwest force 2
      Visibility 15 Kilometres

    Shantou Wind southeast force 2
      Visibility 18 Kilometres in showers

    Dongsha Wind southwest force 5
      Visibility 9 Kilometres

    Huangmaozhou Wind south force 2

    Macau Wind south-southwest force 2
      Visibility 5000 Metres in drizzle

    Xisha Wind southwest force 4
      Visibility 12 Kilometres

  • Explanation of Seas or Sea Waves
  • Explanation of Swells
  • Descriptive Terms of Wind Speeds
  • Visibility Readings in Hong Kong Waters
  • Map showing forecast areas
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    • WEATHER FORECAST FOR LOCAL AVIATION
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    Weather Forecast for Local Aviation

    Bulletin issued at 17:30 HKT 27/AUG/2018
    (Next update at 01:30 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 1800 TO 0400 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  200/10
                  TEMPO VRB/20G30 IN TS
       OFFSHORE:  200/15-20                            29-25
   B.   2000 FT:  210/15-20                            22
   C.   5000 FT:  220/20                               19
   D.  10000 FT:  220/20                               11
   E.  18000 FT:  050/10                               MS2
   F.  24000 FT:  080/15                               MS11
   G.  30000 FT:  100/20                               MS23
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      CLOUDY WITH OCCASIONAL SHOWERS AND A FEW
      SQUALLY THUNDERSTORMS.
   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: 17500 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 OCCASIONAL SHOWERS AND A
     FEW SQUALLY THUNDERSTORMS.  SHOWERS WILL BE
     HEAVY AT TIMES LATER.=

    ===================================================================
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 14:25 HKT on 27 Aug 18

    VHHK SIGMET 1 VALID 270230/270630 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N2100 E11730 - N1718 E11430 - N1718 E11330 - N1854 E11200 - N2342 E11654 - N2400 E11730 - N2100 E11730 TOP FL460 STNR NC= VHHK SIGMET 2 VALID 270630/271030 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N2100 E11730 - N1718 E11430 - N1724 E11324 - N1900 E11154 - N2354 E11724 - N2400 E11730 - N2100 E11730 TOP FL460 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 27/Aug/2018 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     31.4 C
Minimum Air Temperature                     25.5 C
Grass Minimum Temperature                   24.5 C
Relative Humidity                        61 - 96 Percent
Rainfall                                    80.2 mm 
Total rainfall since 1st January          1454.3 mm
Against an average of                     1857.7 mm

Other Stations                Min                  Max
King's Park                  25.0 C               32.1 C
Wong Chuk Hang               24.5 C               32.3 C
Ta Kwu Ling                  25.1 C               33.0 C
Lau Fau Shan                 26.4 C               31.8 C
Tai Po                       25.2 C               31.6 C
Sha Tin                      25.6 C               32.8 C
Tuen Mun                     26.4 C               32.9 C
Tseung Kwan O                24.8 C               32.5 C
Sai Kung                     26.3 C               31.5 C
Cheung Chau                  24.9 C               32.0 C
Chek Lap Kok                 26.0 C               33.0 C
Tsing Yi                     25.0 C               33.2 C
Shek Kong                    25.6 C               33.1 C
Tsuen Wan Ho Koon            24.8 C               30.7 C
Tsuen Wan Shing Mun Valley   25.1 C               33.8 C
Hong Kong Park               24.5 C               33.0 C
Shau Kei Wan                 24.5 C               32.1 C
Kowloon City                 24.8 C               32.8 C
Happy Valley                 24.9 C               33.7 C
Wong Tai Sin                 25.1 C               33.3 C
Stanley                      24.6 C               31.7 C
Kwun Tong                    24.7 C               33.1 C
Sham Shui Po                 24.8 C               32.9 C
Kai Tak Runway Park          24.8 C               32.1 C
Yuen Long Park               26.6 C               33.4 C
Tai Mei Tuk               26.1 C               32.2 C

Duration of sunshine (King's Park):              3.3 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 (26 Aug 2018) average ambient gamma radiation
dose rate taken outdoors in Hong Kong ranged from 0.09 to
0.16 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                             0.09
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                         0.16
Tsim Bei Tsui                       0.13
Cape D'Aguilar                      0.13
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.
    Climatological Information for 26 Aug
     2003copy right image | Important notices | Privacy policy Last revision date: <27 Aug 2018> 

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