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Bulletin issued at 01:02 HKT 27/Dec/2018

At 1 a.m. at the Hong Kong Observatory the air temperature was 21 degrees Celsius and the relative humidity 90 per cent.

The air temperatures at other places were:

King's Park 20 degrees;
Wong Chuk Hang 17 degrees;
Ta Kwu Ling 17 degrees;
Lau Fau Shan 19 degrees;
Tai Po 18 degrees;
Sha Tin 18 degrees;
Tuen Mun 19 degrees;
Tseung Kwan O 17 degrees;
Sai Kung 18 degrees;
Cheung Chau 19 degrees;
Chek Lap Kok 21 degrees;
Tsing Yi 19 degrees;
Shek Kong 18 degrees;
Tsuen Wan Ho Koon 18 degrees;
Tsuen Wan Shing Mun Valley 18 degrees;
Hong Kong Park 19 degrees;
Shau Kei Wan 20 degrees;
Kowloon City 19 degrees;
Happy Valley 19 degrees;
Wong Tai Sin 19 degrees;
Stanley 19 degrees;
Kwun Tong 20 degrees;
Sham Shui Po 19 degrees;
Kai Tak Runway Park 20 degrees;
Yuen Long Park 18 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

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Bulletin updated at 00:45 HKT 27/Dec/2018

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

The weather was generally fine over the south China coastal areas yesterday. Locally, it was mainly fine with relatively low visibility in some areas. It was warm during the day. The winter monsoon will begin to affect southern China today. It will strengthen in the following couple of days. Temperatures will fall significantly over the coastal areas and it will be windy.

At 11 p.m. last night, the tropical depression to the east of the Philippines was centred about 1140 kilometres east-southeast of Manila. It is forecast to move west-northwest at about 18 kilometres per hour in the general direction of the central part of the Philippines.

Weather forecast for Hong Kong

Mainly fine. Visibility relatively low in some areas at first. Cool in the morning and at night. The minimum temperature will be about 17 degrees in the urban areas, and a couple of degrees lower in the New Territories. The maximum temperature will be around 22 degrees. Light winds, becoming moderate northeasterlies, fresh offshore.

Outlook : Temperatures falling significantly and it will be windy in the following couple of days. The weather will be cold with a few rain patches early to midweek next week.


(The above forecast period is valid up to 23:59 HKT today, 27/12/2018; 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 26/Dec/2018

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

GENERAL SITUATION AT 260900 UTC:
AN INTENSE NORTHEAST MONSOON IS AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 261300 UTC:

HONG KONG= NE 4-5, BEC 6. DOWN TO 4000 M IN MIST PATCHES AT FIRST. SEA UP TO 2 M, BEC 3 M. SWELL NE 2 M. TEMP 17-22 C. =
KWANGTUNG= NE 6-7, 8 LATER. DOWN TO 4000 M IN MIST PATCHES AT FIRST. LGT RAIN PATCHES. SEA 3-4 M, 6 M LATER. SWELL NE 3-4 M. =
TAIWAN STRAIT= NE 7-8, UP TO 9 LATER. LGT RAIN PATCHES. SEA 4-6 M, UP TO 8 M LATER. SWELL NE 3-5 M. =
BASHI= NE 6-7, 8 LATER. LGT RAIN PATCHES. SEA 3-4 M, 6 M LATER. SWELL NE 3-5 M. =
PRATAS= NE 6-7, 8 LATER. LGT RAIN PATCHES. SEA 3-4 M, 6 M LATER. SWELL NE 3-4 M. =
BALINTANG= NE 6-7, 8 LATER. LGT RAIN PATCHES. SEA 3-4 M, 6 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 5-6, OCNL 7. LGT RAIN PATCHES. SEA UP TO 4 M. SWELL NE 3 M. =
TONKIN= E TO NE 4-5, OCNL 6. DOWN TO 2000 M IN MIST AT FIRST. LGT RAIN PATCHES. SEA UP TO 3 M. SWELL NE 2 M. =
DANANG= E TO NE 4-5, OCNL 6. DOWN TO 2000 M IN MIST PATCHES AT FIRST. SEA UP TO 3 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
  • Tidal Information

    • 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 23:30 HKT 26/Dec/2018

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 11:30 p.m. on 26 December 2018

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

    Weather Situation:
    The northeast monsoon is affecting the coastal waters of Guangdong.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    Northeast force 4 to 5, becoming force 6.
    Mist patches at first.
    Moderate seas, becoming rough.

    Nan'ao and Shanwei:
    Northeast force 6 to 7, becoming force 8 later.
    Rough seas, becoming very rough later.

    South of Hong Kong and Shangchuan Dao:
    Northeast force 5 to 6, occasionally force 7.
    Moderate to rough seas.

    Outlook for the next 48 hours
    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-southeast force 2
      Visibility 7 Kilometres

    Shantou Wind east-northeast force 1
      Visibility 13 Kilometres

    Dongsha Wind northeast force 3
      Visibility 10 Kilometres

    Huangmaozhou Wind east force 3

    Xisha Wind east-northeast force 3
      Visibility 21 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 27/DEC/2018
    (Next update at 9:00-9:30 HKT 27/DEC/2018)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     NIL.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     THE NORTHEAST MONSOON IS AFFECTING THE COASTAL AREAS OF
     GUANGDONG.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 0200 TO 1200 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  020/5-10
       OFFSHORE:  040/10-15, OCNL 20                   16-22
   B.   2000 FT:  060/10-15                            15
   C.   5000 FT:  020/10                               13
   D.  10000 FT:  260/20                               11
   E.  18000 FT:  290/25                               1
   F.  24000 FT:  280/25                               MS14
   G.  30000 FT:  240/30                               MS27
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      MAINLY FINE. LOCALISED MIST/HAZE.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 3000 FT.
   K. VISIBILITY    : 7 KM. TEMPO 3000 M IN MIST/HAZE.
   L. 0 DEG. C LEVEL: 18500 FT      
      10 DEG. C LEVEL(S) : 6200, 8200 FT
   M. TURBULENCE    : MOD OFFSHORE AND NEAR HILLS.
   N. SEA STATE     : 1.0-2.0 M     SEA TEMPERATURE    : 21 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE TO FRESH NORTHEASTERLY WINDS, OCCASIONALLY STRONG 
     OFFSHORE. MAINLY FINE.=

    ===================================================================
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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     2003copy right image | Important notices | Privacy policy Last revision date: <26 Dec 2018> 
    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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