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Bulletin issued at 18:02 HKT 27/Dec/2018

At 6 p.m. at the Hong Kong Observatory the air temperature was 21 degrees Celsius and the relative humidity 75 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 20 degrees;
Wong Chuk Hang 20 degrees;
Ta Kwu Ling 20 degrees;
Lau Fau Shan 19 degrees;
Tai Po 20 degrees;
Sha Tin 21 degrees;
Tuen Mun 21 degrees;
Tseung Kwan O 20 degrees;
Sai Kung 21 degrees;
Cheung Chau 19 degrees;
Chek Lap Kok 21 degrees;
Tsing Yi 21 degrees;
Shek Kong 20 degrees;
Tsuen Wan Ho Koon 19 degrees;
Tsuen Wan Shing Mun Valley 21 degrees;
Hong Kong Park 20 degrees;
Shau Kei Wan 20 degrees;
Kowloon City 20 degrees;
Happy Valley 20 degrees;
Wong Tai Sin 20 degrees;
Stanley 20 degrees;
Kwun Tong 20 degrees;
Sham Shui Po 21 degrees;
Kai Tak Runway Park 21 degrees;
Yuen Long Park 20 degrees;
Tai Mei Tuk 19 degrees.


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


Climatological Information for 27 Dec

Regional Weather in Hong Kong

Information on Tropical Cyclones

Hong Kong Climatology


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Bulletin updated at 17:45 HKT 27/Dec/2018

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

The winter monsoon is affecting inland Guangdong.

At 4 p.m., the tropical depression to the east of the Philippines was centred about 990 kilometres east-southeast of Manila. It is forecast to move west-northwest at about 14 kilometres per hour in the general direction of the central part of the Philippines.

Weather forecast for tonight and tomorrow

Becoming cloudy. It will become cool tomorrow morning. Sunny periods during the day. The maximum temperature will be about 20 degrees. Temperatures falling significantly later with a minimum temperature of around 16 degrees in the urban areas, and a couple of degrees lower in the New Territories. Moderate to fresh east to northeasterly winds, occasionally strong offshore.

Outlook : Becoming cold and windy in the following few days. A few rain patches early to midweek next week.


(The above forecast period is valid up to 23:59 HKT tomorrow, 28/12/2018; 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 27/Dec/2018

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

GENERAL SITUATION AT 262100 UTC:
AN INTENSE NORTHEAST MONSOON IS AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 270100 UTC:

HONG KONG= NE 5-6, OCNL 7. FINE. SEA UP TO 4 M. SWELL NE 2 M. TEMP 23-15 C. =
KWANGTUNG= NE 6-7, BEC 8. LGT RAIN PATCHES. SEA 3-4 M, BEC 6 M. SWELL NE 3-4 M. =
TAIWAN STRAIT= NE 7-8, 9 LATER. LGT RAIN PATCHES. SEA 4-6 M, 8 M LATER. SWELL NE 3-5 M. =
BASHI= NE 7-8, 9 LATER. LGT RAIN PATCHES. SEA 4-6 M, 8 M LATER. SWELL NE 3-5 M. =
PRATAS= NE 6-7, BEC 8. LGT RAIN PATCHES. SEA 3-4 M, BEC 6 M. SWELL NE 3-4 M. =
BALINTANG= NE 7-8, 9 LATER. LGT RAIN PATCHES. SEA 4-6 M, 8 M LATER. SWELL NE 3-5 M. =
SCARBOROUGH= NE 6-7, 8 LATER. LGT RAIN PATCHES. SEA 3-4 M, 6 M LATER. SWELL NE 3-4 M. =
PARACEL= NE 6-7, 8 LATER. LGT RAIN PATCHES. SEA 3-4 M, 6 M LATER. SWELL NE 3 M. =
TONKIN= E TO NE 5-6, OCNL 7. DOWN TO 2000 M IN MIST PATCHES AND LGT RAIN PATCHES. SEA UP TO 4 M. SWELL NE 2 M. =
DANANG= E TO NE 5-6, OCNL 7. DOWN TO 2000 M IN MIST PATCHES. SEA UP TO 4 M. SWELL NE 2-3 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 17:00 HKT 27/Dec/2018

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 5:00 p.m. on 27 December 2018

    Warnings:
    Gale force winds in all areas.

    Weather Situation:
    An intense northeast monsoon is affecting the south China coastal waters.

    At 4 p.m., the tropical depression to the east of the Philippines with maximum sustained winds of about 45 kilometres per hour near its centre was located near 10.5 degrees north, 129.1 degrees east. It is forecast to move west-northwest at about 14 kilometres per hour in the general direction of the central part of the Philippines.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    East to northeast force 6 to 7, up to force 8 later.
    Rough seas, becoming very rough later.

    Nan'ao:
    Northeast force 7 to 8, occasionally force 9.
    Rough to very rough seas.

    Shanwei:
    Northeast force 7 to 8.
    Rough to very rough seas.

    South of Hong Kong and Shangchuan Dao:
    Northeast force 6 to 7, force 8 later.
    Rough seas, becoming very rough later.

    Outlook for the next 48 hours
    North to northeasterly winds of force 7 to 8, up to force 9 in east.

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

    Waglan Island Wind east-northeast force 4
      Visibility 27 Kilometres

    Shantou Wind east-northeast force 3
      Visibility 22 Kilometres

    Huangmaozhou Wind east force 5

    Macau Wind north-northeast force 2
      Visibility 13 Kilometres

    Xisha Wind northeast force 3
      Visibility 25 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 27/DEC/2018
    (Next update at 01:30 HKT 28/DEC/2018)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     STRONG WINDS AND SEV TURB.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     THE NORTHEAST MONSOON IS AFFECTING THE SOUTH
     CHINA COASTAL AREAS.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1800 TO 0400 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  050/10-15
       OFFSHORE:  070/20-25                            21-16
   B.   2000 FT:  070/15-20, OCNL 25 LATER             15-12
   C.   5000 FT:  060/10                               11
   D.  10000 FT:  280/20                               11
   E.  18000 FT:  260/20                               MS3
   F.  24000 FT:  240/20                               MS15
   G.  30000 FT:  240/30                               MS28
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      4000 - 4400 FT.
   I. WEATHER       : 
      MAINLY CLOUDY.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 2000 FT  SCT 4000 FT  BKN 10000 FT.
   K. VISIBILITY    : 9 KM.
   L. 0 DEG. C LEVEL: 17000 FT
      10 DEG. C LEVEL(S) : 6200, 9000, 12200 FT
   M. TURBULENCE    : MOD TO SEV OFFSHORE AND NEAR HILLS.
   N. SEA STATE     : 2.5-3.5 M     SEA TEMPERATURE    : 22 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE TO FRESH EAST TO NORTHEASTERLY WINDS,
     STRONG OFFSHORE.  MAINLY CLOUDY AT FIRST.  SUNNY
     PERIODS DURING THE DAY.=

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

    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 27/Dec/2018 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     23.6 C
Minimum Air Temperature                     18.7 C
Grass Minimum Temperature                   16.3 C
Relative Humidity                        72 - 92 Percent
Rainfall                                       0 mm 
Total rainfall since 1st January          2162.9 mm
Against an average of                     2390.8 mm

Other Stations                Min                  Max
King's Park                  17.3 C               24.0 C
Wong Chuk Hang               16.0 C               24.0 C
Ta Kwu Ling                  15.0 C               27.1 C
Lau Fau Shan                 16.5 C               24.4 C
Tai Po                       16.8 C               24.0 C
Sha Tin                      15.8 C               26.1 C
Tuen Mun                     17.6 C               26.4 C
Tseung Kwan O                15.9 C               25.3 C
Sai Kung                     17.0 C               22.1 C
Cheung Chau                  16.5 C               25.1 C
Chek Lap Kok                 17.9 C               24.5 C
Tsing Yi                     17.1 C               24.5 C
Shek Kong                    15.7 C               26.7 C
Tsuen Wan Ho Koon            16.0 C               23.3 C
Tsuen Wan Shing Mun Valley   16.2 C               25.6 C
Hong Kong Park               17.5 C               25.9 C
Shau Kei Wan                 17.8 C               23.6 C
Kowloon City                 17.3 C               26.4 C
Happy Valley                 16.2 C               25.8 C
Wong Tai Sin                 16.7 C               26.0 C
Stanley                      17.3 C               23.5 C
Kwun Tong                    17.2 C               25.7 C
Sham Shui Po                 17.7 C               25.2 C
Kai Tak Runway Park          18.2 C               23.6 C
Yuen Long Park               15.7 C               26.5 C
Tai Mei Tuk               17.0 C               27.1 C

Duration of sunshine (King's Park):              9.4 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 (26 Dec 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                           0.09
Tap Mun                             0.09
Kat O                               0.10
Yuen Ng Fan                         0.12
Tai Mei Tuk                         0.12
Sha Tau Kok                         0.11
Kwun Tong                           0.13
Sai Wan Ho                          0.10
King's Park                         0.15
Tsim Bei Tsui                       0.13
Cape D'Aguilar                      0.13
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 26 Dec
     2003copy right image | Important notices | Privacy policy Last revision date: <27 Dec 2018> 

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