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Bulletin issued at 00:02 HKT 13/Jan/2019

At midnight at the Hong Kong Observatory the air temperature was 20 degrees Celsius and the relative humidity 91 per cent.

The air temperatures at other places were:

King's Park 19 degrees;
Wong Chuk Hang 19 degrees;
Ta Kwu Ling 19 degrees;
Lau Fau Shan 19 degrees;
Tai Po 19 degrees;
Sha Tin 19 degrees;
Tuen Mun 19 degrees;
Tseung Kwan O 18 degrees;
Sai Kung 18 degrees;
Cheung Chau 19 degrees;
Chek Lap Kok 20 degrees;
Tsing Yi 21 degrees;
Shek Kong 18 degrees;
Tsuen Wan Ho Koon 19 degrees;
Tsuen Wan Shing Mun Valley 20 degrees;
Hong Kong Park 19 degrees;
Shau Kei Wan 18 degrees;
Kowloon City 19 degrees;
Happy Valley 19 degrees;
Wong Tai Sin 19 degrees;
Stanley 18 degrees;
Kwun Tong 18 degrees;
Sham Shui Po 20 degrees;
Kai Tak Runway Park 19 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 13 Jan

Regional Weather in Hong Kong

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Hong Kong Climatology


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Bulletin updated at 00:00 HKT 13/Jan/2019

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

Winds were weak over the coast of Guangdong yesterday. Locally, there were sunny periods and visibility was rather low. The visibility in the harbour once fell to about 2000 metres. Besides, pressure over southeastern China started to rise yesterday afternoon. An easterly airstream is expected to affect the coast of Guangdong today and tomorrow.

Weather forecast for Hong Kong (Sunday, 13 Jan 2019)

Mainly cloudy. One or two light rain patches and rather low visibility at first. Sunny periods during the day. Temperatures will range between 18 and 22 degrees. Moderate easterly winds, becoming fresh.

Outlook : Windier with sunny periods in the following couple of days. Becoming cool midweek this week.


(The above forecast period is valid up to 23:59 HKT today, 13/01/2019; 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 12/Jan/2019

N0 WARNING.

GENERAL SITUATION AT 120900 UTC:
AN EASTERLY AIRSTREAM IS GENERALLY AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 121300 UTC:

HONG KONG= E 4-5, BEC 6. CLD. DOWN TO 2000 M IN MIST PATCHES AT FIRST. SEA UP TO 2 M, 3 M LATER. TEMP 18-22 C. =
KWANGTUNG= E TO NE 5-6. CLD. DOWN TO 2000 M IN MIST OR RAIN PATCHES AT FIRST. SEA 2-3 M. SWELL NE UP TO 2 M. =
TAIWAN STRAIT= NE 6-7. LGT RAIN PATCHES. SEA 3-4 M. SWELL NE 2 M. =
BASHI= E 5-6, 7 LATER. LGT RAIN PATCHES. SEA 2-3 M, 4 M LATER. SWELL E 2 M. =
PRATAS= E TO NE 5-6. LGT RAIN PATCHES. SEA 2-3 M. SWELL E TO NE UP TO 2 M. =
BALINTANG= E 5-6, 7 LATER. LGT RAIN PATCHES. SEA 2-3 M, 4 M LATER. SWELL E 2 M. =
SCARBOROUGH= E 5-6, 7 LATER. FINE. SEA 2-3 M, 4 M LATER. =
PARACEL= E TO NE 4-5. DOWN TO 1000 M IN MIST OR LGT RAIN PATCHES. SEA UP TO 2 M. =
TONKIN= E TO NE 4. DOWN TO 1000 M IN MIST OR LGT RAIN PATCHES. =
DANANG= E TO NE 4-5. DOWN TO 1000 M IN MIST OR LGT RAIN PATCHES. 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.


  • 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 00:00 HKT 13/Jan/2019

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 12:00 a.m. on 13 January 2019

    Warnings:
    Strong winds in all areas.

    Weather Situation:
    An easterly airstream is affecting the south China coastal waters.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    East force 4 to 5, becoming force 6.
    Light rain at first. Visibility rather low in some areas.
    Moderate seas, becoming rough.

    Nan'ao:
    East force 5 to 6.
    Moderate to rough seas.

    Shanwei, South of Hong Kong and Shangchuan Dao:
    East to northeast force 4 to 5, becoming force 6.
    Moderate seas, becoming rough.

    Outlook for the next 48 hours
    Easterly winds of force 6 to 7.

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

    Waglan Island Wind east-northeast force 5
      Visibility 970 Metres

    Shantou Wind east-northeast force 2
      Visibility 23 Kilometres

    Dongsha Wind north-northeast force 3
      Visibility 10 Kilometres

    Huangmaozhou Wind east force 4

    Macau Wind north-northwest force 1
      Visibility 2900 Metres in mist

    Xisha Wind northeast force 2
      Visibility 26 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 12/JAN/2019
    (Next update at 01:30 HKT 13/JAN/2019)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     NIL.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     WINDS ARE WEAK OVER THE COAST OF
     GUANGDONG.BESIDES, PRESSURE IS RISING OVER
     SOUTHEASTERN CHINA. 
     AN EASTERLY AIRSTREAM IS EXPECTED TO REACH THE
     COAST OF GUANGDONG OVERNIGHT.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1800 TO 0400 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  360/5-10
                  BECMG 090/10
       OFFSHORE:  020/10-15
                  BECMG 090/10-15                      22-18
   B.   2000 FT:  060/10-15                            17
   C.   5000 FT:  060/10                               13
   D.  10000 FT:  250/15                               9
   E.  18000 FT:  260/25                               MS3
   F.  24000 FT:  270/40                               MS17
   G.  30000 FT:  250/55                               MS29
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      2300-2500 FT
   I. WEATHER       : 
      MAINLY CLOUDY. LOCALISED MIST.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1500 FT  SCT 3500 FT.
   K. VISIBILITY    : 5 KM. TEMPO 2000 M IN MIST.
   L. 0 DEG. C LEVEL: 16500 FT      10 DEG. C LEVEL(S) : 6800,7800,8200 FT
   M. TURBULENCE    : NIL.
   N. SEA STATE     : 1.0-1.5 M     SEA TEMPERATURE    : 19 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE EASTERLY WINDS. MAINLY CLOUDY,SUNNY
     PERIODS DURING THE DAY. LOCALISED MIST/HAZE.=

    ===================================================================
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 13/Jan/2019 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     22.8 C
Minimum Air Temperature                     19.3 C
Grass Minimum Temperature                   17.2 C
Relative Humidity                        71 - 94 Percent
Rainfall                                      Trace 
Total rainfall since 1st January             0.4 mm
Against an average of                        7.9 mm

Other Stations                Min                  Max
King's Park                  18.7 C               24.2 C
Wong Chuk Hang               17.6 C               25.5 C
Ta Kwu Ling                  17.8 C               26.6 C
Lau Fau Shan                 18.1 C               22.7 C
Tai Po                       18.2 C               24.9 C
Sha Tin                      18.1 C               26.4 C
Tuen Mun                     18.5 C               23.9 C
Tseung Kwan O                16.8 C               26.8 C
Sai Kung                     17.6 C               23.0 C
Cheung Chau                  17.4 C               26.0 C
Chek Lap Kok                 18.3 C               22.6 C
Tsing Yi                     18.7 C               22.6 C
Shek Kong                    17.9 C               24.6 C
Tsuen Wan Ho Koon            17.9 C               22.7 C
Tsuen Wan Shing Mun Valley   18.2 C               23.4 C
Hong Kong Park               18.7 C               25.1 C
Shau Kei Wan                 17.8 C               24.7 C
Kowloon City                 18.1 C               27.0 C
Happy Valley                 18.4 C               26.3 C
Wong Tai Sin                 18.3 C               26.7 C
Stanley                      17.9 C               24.0 C
Kwun Tong                    18.1 C               26.3 C
Sham Shui Po                 18.8 C               24.3 C
Kai Tak Runway Park          18.6 C               24.4 C
Yuen Long Park               18.1 C               24.1 C
Tai Mei Tuk               18.1 C               28.0 C

Duration of sunshine (King's Park):              8.6 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 4.
 

Yesterday's (12 Jan 2019) 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                               0.11
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 12 Jan
     2003copy right image | Important notices | Privacy policy Last revision date: <13 Jan 2019> 

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