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Bulletin issued at 18:02 HKT 06/Dec/2018

At 6 p.m. at the Hong Kong Observatory the air temperature was 24 degrees Celsius and the relative humidity 80 per cent.
During the past hour the mean UV Index recorded at King's Park was 0.0. The intensity of UV radiation was low.

The air temperatures at other places were:

King's Park 23 degrees;
Wong Chuk Hang 24 degrees;
Ta Kwu Ling 24 degrees;
Lau Fau Shan 24 degrees;
Tai Po 24 degrees;
Sha Tin 24 degrees;
Tuen Mun 24 degrees;
Tseung Kwan O 22 degrees;
Sai Kung 23 degrees;
Cheung Chau 23 degrees;
Chek Lap Kok 25 degrees;
Tsing Yi 25 degrees;
Shek Kong 25 degrees;
Tsuen Wan Ho Koon 23 degrees;
Tsuen Wan Shing Mun Valley 24 degrees;
Hong Kong Park 24 degrees;
Shau Kei Wan 23 degrees;
Kowloon City 23 degrees;
Happy Valley 24 degrees;
Wong Tai Sin 24 degrees;
Stanley 23 degrees;
Kwun Tong 23 degrees;
Sham Shui Po 25 degrees;
Kai Tak Runway Park 23 degrees;
Yuen Long Park 25 degrees;
Tai Mei Tuk 23 degrees.


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


Climatological Information for 6 Dec

Regional Weather in Hong Kong

Information on Tropical Cyclones

Hong Kong Climatology


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Bulletin updated at 17:45 HKT 06/Dec/2018

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

The cold front now over the inland of southern China is moving southwards gradually. It is expected to cross the coastal areas overnight.

Weather forecast for tonight and tomorrow

Mainly cloudy with one or two rain patches. Moderate easterly winds at first, strengthening from the north overnight. The weather will become cool significantly. Temperatures tomorrow will fall from 22 degrees at first to a minimum of around 17 degrees.

Outlook : Temperatures dropping further over the weekend. Cold with rain early next week.


(The above forecast period is valid up to 23:59 HKT tomorrow, 07/12/2018; 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 06/Dec/2018

GALE WARNING AREA: TAIWAN STRAIT.

GENERAL SITUATION AT 052100 UTC:
COLD FRONT 25N 108E 24N 111E 28N 118E S SLOWLY.

MARINE FORECAST FOR 24 HOURS FROM 060100 UTC:

HONG KONG= E 5-6, N TO NE UP TO 7 LATER. A FEW RAIN PATCHES. SEA 2-3 M, UP TO 4 M LATER. SWELL E TO NE UP TO 2 M. TEMP 24-19 C. =
KWANGTUNG= E 5-6, N TO NE 6-7 LATER. RAIN PATCHES. SEA 2-3 M, 3-4 M LATER. SWELL E TO NE 2 M. =
TAIWAN STRAIT= NE 5-6, UP TO 8 LATER. RAIN PATCHES. SEA 2-3 M, UP TO 6 M LATER. SWELL E TO NE 2-3 M. =
BASHI= E TO NE 6-7. RAIN PATCHES. SEA 3-4 M. SWELL E TO NE 2-3 M. =
PRATAS= E TO NE 5-6, UP TO 7 LATER. RAIN PATCHES. SEA 2-3 M, UP TO 4 M LATER. SWELL E TO NE 2 M. =
BALINTANG= E TO NE 6-7. FINE. SEA 3-4 M. SWELL E TO NE 2-3 M. =
SCARBOROUGH= E TO NE 4-5, OCNL 6. FINE. SEA UP TO 3 M. SWELL E TO NE 2 M. =
PARACEL= E TO NE 4-5, N TO NE UP TO 7 IN N LATER. RAIN PATCHES. SEA UP TO 2 M, UP TO 4 M LATER. SWELL E TO NE UP TO 2 M. =
TONKIN= E 4-5, N TO NE 6-7 LATER. RAIN PATCHES. SEA UP TO 2 M, 3-4 M LATER. =
DANANG= E 4-5. CLD. SEA UP TO 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

    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 06/Dec/2018

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 4:30 p.m. on 06 December 2018

    Warnings:
    Strong winds in all areas.

    Weather Situation:
    The cold front now over the inland of southern China is moving southwards gradually. It is expected to cross the south China coastal waters overnight.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    East force 4 to 5, becoming north to northeast up to force 7.
    A few rain patches.
    Moderate seas, becoming rough.

    Nan'ao, Shanwei, South of Hong Kong and Shangchuan Dao:
    East force 5 to 6, becoming north to northeast force 6 to 7.
    Moderate to rough seas.

    Outlook for the next 48 hours
    North to northeasterly winds of force 6 to 7, occasionally force 8.

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

    Waglan Island Wind east-northeast force 3
      Visibility 16 Kilometres

    Dongsha Wind northeast force 3
      Visibility 10 Kilometres

    Huangmaozhou Wind east force 4

    Macau Wind north-northeast force 2
      Visibility 10 Kilometres

    Xisha Wind northeast force 2
      Visibility 27 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 17:30 HKT 06/DEC/2018
    (Next update at 01:30 HKT 07/DEC/2018)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     NIL.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     THE COLD FRONT NOW OVER THE INLAND OF SOUTHERN
     CHINA IS MOVING SOUTHWARDS GRADUALLY.  IT IS
     EXPECTED TO CROSS THE COASTAL AREAS OVERNIGHT.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1800 TO 0400 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  080/5-10 BEC 020/10-15
       OFFSHORE:  080/10 BEC 020/15-20                 25-17
   B.   2000 FT:  120/5-10 BEC 090/15-20               19-16
   C.   5000 FT:  160/10                               15
   D.  10000 FT:  220/20                               9
   E.  18000 FT:  250/25                               MS5
   F.  24000 FT:  230/30                               MS16
   G.  30000 FT:  230/40                               MS29
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      2100 - 2400 FT.
   I. WEATHER       : 
      MAINLY CLOUDY WITH A FEW RAIN AND MIST PATCHES.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1500 FT  SCT 2500 FT.
   K. VISIBILITY    : 7 KM.  TEMPO 4000 M IN RAIN/MIST.
   L. 0 DEG. C LEVEL: 15500 FT
      10 DEG. C LEVEL(S) : 7800, 9000, 9800 FT
   M. TURBULENCE    : MOD OFFSHORE AND NEAR HILLS LATER.
   N. SEA STATE     : 1.5-2.5 M     SEA TEMPERATURE    : 23 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE TO FRESH NORTH TO NORTHEASTERLY WINDS,
     STRONG OFFSHORE.  MAINLY CLOUDY WITH A FEW RAIN
     AND MIST PATCHES.=

    ===================================================================
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.

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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.

    There is no Significant Weather Information (SIGMET)

    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 06/Dec/2018 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     24.8 C
Minimum Air Temperature                     22.5 C
Grass Minimum Temperature                   20.7 C
Relative Humidity                        76 - 83 Percent
Rainfall                                      Trace 
Total rainfall since 1st January          2151.0 mm
Against an average of                     2373.8 mm

Other Stations                Min                  Max
King's Park                  21.9 C               24.6 C
Wong Chuk Hang               22.2 C               25.2 C
Ta Kwu Ling                  20.5 C               25.4 C
Lau Fau Shan                 20.8 C               28.3 C
Tai Po                       21.8 C               23.3 C
Sha Tin                      22.0 C               24.0 C
Tuen Mun                     22.2 C               26.9 C
Tseung Kwan O                21.5 C               23.7 C
Cheung Chau                  21.9 C               24.0 C
Chek Lap Kok                 23.1 C               26.5 C
Tsing Yi                     22.7 C               25.7 C
Shek Kong                    20.7 C               25.5 C
Tsuen Wan Ho Koon            20.7 C               23.5 C
Tsuen Wan Shing Mun Valley   22.0 C               24.4 C
Hong Kong Park               22.3 C               24.9 C
Shau Kei Wan                 21.5 C               24.6 C
Kowloon City                 21.7 C               25.1 C
Happy Valley                 22.7 C               25.3 C
Wong Tai Sin                 22.3 C               25.5 C
Stanley                      21.9 C               24.5 C
Kwun Tong                    21.5 C               24.5 C
Sham Shui Po                 22.4 C               25.9 C
Kai Tak Runway Park          22.4 C               24.8 C
Yuen Long Park               21.1 C               26.4 C
Tai Mei Tuk               21.8 C               23.7 C

Duration of sunshine (King's Park):              0.6 H
The mean UV index recorded at King's Park yesterday was 0.9,
the UV intensity was Low.
The maximum UV index for yesterday was 3.
 

Yesterday's (05 Dec 2018) average ambient gamma radiation
dose rate taken outdoors in Hong Kong ranged from 0.09 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                             0.09
Kat O                               0.10
Yuen Ng Fan                         0.12
Tai Mei Tuk                         0.12
Sha Tau Kok                         0.10
Kwun Tong                           0.12
Sai Wan Ho                          0.09
King's Park                         0.14
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 05 Dec
     2003copy right image | Important notices | Privacy policy Last revision date: <06 Dec 2018> 

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