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Bulletin issued at 05:02 HKT 07/Dec/2018

At 5 a.m. at the Hong Kong Observatory the air temperature was 23 degrees Celsius and the relative humidity 87 per cent.

The air temperatures at other places were:

King's Park 22 degrees;
Wong Chuk Hang 23 degrees;
Ta Kwu Ling 22 degrees;
Lau Fau Shan 22 degrees;
Tai Po 22 degrees;
Sha Tin 23 degrees;
Tuen Mun 22 degrees;
Tseung Kwan O 21 degrees;
Sai Kung 23 degrees;
Cheung Chau 22 degrees;
Chek Lap Kok 22 degrees;
Tsing Yi 23 degrees;
Shek Kong 22 degrees;
Tsuen Wan Ho Koon 21 degrees;
Tsuen Wan Shing Mun Valley 22 degrees;
Hong Kong Park 22 degrees;
Shau Kei Wan 22 degrees;
Kowloon City 22 degrees;
Happy Valley 23 degrees;
Wong Tai Sin 23 degrees;
Stanley 22 degrees;
Kwun Tong 22 degrees;
Sham Shui Po 22 degrees;
Kai Tak Runway Park 23 degrees;
Yuen Long Park 22 degrees;
Tai Mei Tuk 22 degrees.


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


Climatological Information for 7 Dec

Regional Weather in Hong Kong

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Bulletin updated at 04:45 HKT 07/Dec/2018

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

A cold front is moving across the coast of Guangdong and bringing rainy weather to the region.

Weather forecast for today

Mainly cloudy with one or two rain patches. Temperatures will be about 23 degrees at first. It will become cool significantly tonight with temperatures falling to around 17 degrees. Moderate to fresh north to northeasterly winds, occasionally strong offshore later.

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


(The above forecast period is valid up to 23:59 HKT today, 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 21:00 HKT 06/Dec/2018

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

GENERAL SITUATION AT 060900 UTC:
COLD FRONT 24N 111E 26N 119E 28N 125E S 10KT.

MARINE FORECAST FOR 24 HOURS FROM 061300 UTC:

HONG KONG= E 4-5, BEC N TO NE UP TO 7. A FEW RAIN PATCHES. SEA UP TO 2 M, BEC 4 M. SWELL NE 2 M. TEMP 22-17 C. =
KWANGTUNG= E 5-6, BEC N TO NE 7-8. RAIN PATCHES. SEA 2-3 M, BEC 4-6 M. SWELL NE 2 M. =
TAIWAN STRAIT= N TO NE 7-8, OCNL 9. RAIN PATCHES. SEA UP TO 8 M. SWELL NE 2-3 M. =
BASHI= E TO NE 5-6, BEC NE 7-8. RAIN PATCHES. SEA 2-3 M, BEC 4-6 M. SWELL NE 2-3 M. =
PRATAS= E TO NE 5-6, BEC NE 7-8. RAIN PATCHES. SEA 2-3 M, BEC 4-6 M. SWELL NE 2-3 M. =
BALINTANG= E TO NE 5-6, BEC NE 7-8. CLD. SEA 2-3 M, BEC 4-6 M. SWELL NE 2-3 M. =
SCARBOROUGH= E TO NE 4-5, BEC N TO NE 6-7. FINE. SEA UP TO 2 M, BEC 3-4 M. SWELL NE 2-3 M. =
PARACEL= E TO NE 4-5, BEC NE 6-7. RAIN PATCHES. SEA UP TO 2 M, BEC 3-4 M. SWELL NE 2 M. =
TONKIN= N TO NE 4-5, BEC 6-7. RAIN PATCHES. SEA UP TO 2 M, BEC 3-4 M. =
DANANG= E 4-5, BEC NE 5-6. RAIN PATCHES. SEA UP TO 2 M, BEC 2-3 M. SWELL NE 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
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    Bulletin issued at 05:30 HKT 07/Dec/2018

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 5:30 a.m. on 07 December 2018

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

    Weather Situation:
    A cold front is moving across the coast of Guangdong. The associated northeast monsoon will affect the south China coastal waters.

    Area forecasts for the next 24 hours

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

    Nan'ao, Shanwei, South of Hong Kong and Shangchuan Dao:
    North to northeast force 5 to 6, becoming force 7 to 8.
    Moderate to rough seas, becoming very rough.

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

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

    Waglan Island Wind east-northeast force 4
      Visibility 9 Kilometres

    Shantou Wind east force 2
      Visibility 13 Kilometres

    Huangmaozhou Wind east force 3

    Macau Wind east-southeast force 1
      Visibility 5000 Metres

    Xisha Wind east-northeast force 2
      Visibility 19 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 01:30 HKT 07/DEC/2018
    (Next update at 9:00-9:30 HKT 07/DEC/2018)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     STRONG WINDS AND SEV TURB.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     A COLD FRONT IS MOVING ACROSS THE COAST OF GUANGDONG. 
     THE ASSOCIATED NORTHEAST MONSOON WILL AFFECT THE REGION TODAY.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 0200 TO 1200 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  360/10-15
       OFFSHORE:  020/15-20, OCNL 25 LATER             16-22
   B.   2000 FT:  080/15-20, OCNL 25 LATER             14-18
   C.   5000 FT:  140/10                               15
   D.  10000 FT:  240/15                               10
   E.  18000 FT:  260/25                               MS4
   F.  24000 FT:  240/30                               MS16
   G.  30000 FT:  240/40                               MS27
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      MAINLY CLOUDY WITH A FEW RAIN PATCHES.
      LOCALIZED MIST.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1500 FT  SCT 2500 FT.
   K. VISIBILITY    : 8 KM. TEMPO 4000 M IN RAIN/MIST.
   L. 0 DEG. C LEVEL: 15500 FT      
      10 DEG. C LEVEL(S) : 8600, 10000 FT
   M. TURBULENCE    : MOD TO SEV OFFSHORE AND NEAR HILLS.
   N. SEA STATE     : 2.0-3.0 M     SEA TEMPERATURE    : 23 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE TO FRESH NORTH TO NORTHEASTERLY WINDS, STRONG
     OFFSHORE. MAINLY CLOUDY WITH A FEW RAIN 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 07/Dec/2018 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     25.1 C
Minimum Air Temperature                     21.6 C
Grass Minimum Temperature                   20.7 C
Relative Humidity                        76 - 93 Percent
Rainfall                                     0.1 mm 
Total rainfall since 1st January          2151.1 mm
Against an average of                     2373.8 mm

Other Stations                Min                  Max
King's Park                  21.0 C               25.5 C
Wong Chuk Hang               21.5 C               26.2 C
Ta Kwu Ling                  21.9 C               25.7 C
Lau Fau Shan                 20.6 C               26.0 C
Tai Po                       21.2 C               24.1 C
Sha Tin                      21.1 C               25.6 C
Tuen Mun                     21.9 C               26.4 C
Tseung Kwan O                20.7 C               24.9 C
Sai Kung                     21.5 C               24.9 C
Cheung Chau                  21.4 C               26.1 C
Chek Lap Kok                 22.2 C               27.3 C
Tsing Yi                     22.2 C               26.6 C
Shek Kong                    20.9 C               26.3 C
Tsuen Wan Ho Koon            20.8 C               25.3 C
Tsuen Wan Shing Mun Valley   21.5 C               25.6 C
Hong Kong Park               20.9 C               25.2 C
Shau Kei Wan                 20.7 C               24.8 C
Kowloon City                 21.2 C               26.4 C
Happy Valley                 21.2 C               26.1 C
Wong Tai Sin                 21.3 C               26.7 C
Stanley                      21.1 C               25.5 C
Kwun Tong                    20.6 C               24.9 C
Sham Shui Po                 21.5 C               27.3 C
Kai Tak Runway Park          21.3 C               24.8 C
Yuen Long Park               20.8 C               26.0 C
Tai Mei Tuk               21.1 C               25.8 C

Duration of sunshine (King's Park):              2.0 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 5.
 

Yesterday's (06 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                           0.13
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 06 Dec
     2003copy right image | Important notices | Privacy policy Last revision date: <07 Dec 2018> 

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