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Bulletin issued at 16:02 HKT 13/Jan/2019

At 4 p.m. at the Hong Kong Observatory the air temperature was 19 degrees Celsius and the relative humidity 86 per cent.
During the past hour the mean UV Index recorded at King's Park was 0.9. The intensity of UV radiation was low.

The air temperatures at other places were:

King's Park 19 degrees;
Wong Chuk Hang 20 degrees;
Ta Kwu Ling 20 degrees;
Lau Fau Shan 21 degrees;
Tai Po 19 degrees;
Sha Tin 19 degrees;
Tuen Mun 19 degrees;
Tseung Kwan O 18 degrees;
Sai Kung 18 degrees;
Cheung Chau 20 degrees;
Chek Lap Kok 21 degrees;
Tsing Yi 20 degrees;
Shek Kong 21 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 20 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 21 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 16:15 HKT 13/Jan/2019

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

A ridge of high pressure over southeastern China is bringing a fresh easterly airstream to the coast of Guangdong.

Weather forecast for tonight and tomorrow

Mainly cloudy. One or two light rain patches in the morning and at night. Sunny intervals during the day tomorrow. Temperatures will range between 17 and 20 degrees. Moderate to fresh easterly winds, occasionally strong offshore tomorrow.

Outlook : Sunny periods on Tuesday. Becoming cool significantly on Wednesday.


(The above forecast period is valid up to 23:59 HKT tomorrow, 14/01/2019; 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

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Bulletin issued at 09:00 HKT 13/Jan/2019

N0 WARNING.

GENERAL SITUATION AT 122100 UTC:
AN EASTERLY AIRSTREAM IS GENERALLY AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 130100 UTC:

HONG KONG= E 4-5, OCNL 6. DOWN TO 4000 M IN MIST OR LGT RAIN PATCHES AT FIRST. SEA UP TO 3 M. TEMP 21-17 C. =
KWANGTUNG= E 5-6, OCNL 7. DOWN TO 4000 M IN MIST OR LGT RAIN PATCHES. SEA UP TO 4 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, OCNL 7. LGT RAIN PATCHES. SEA UP TO 4 M. 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, OCNL 7. LGT RAIN PATCHES. SEA UP TO 4 M. SWELL E 2 M. =
SCARBOROUGH= E 5-6, OCNL 7. FINE. SEA UP TO 4 M. =
PARACEL= E TO NE 4-5, OCNL 6. DOWN TO 2000 M IN MIST OR LGT RAIN PATCHES. SEA UP TO 3 M. =
TONKIN= E TO NE 4. DOWN TO 500 M IN FOG OR RAIN PATCHES. =
DANANG= E TO NE 4-5. DOWN TO 2000 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

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    9-day Weather Forecast | UV Index Forecast | Weather Information for Fishermen

    Bulletin issued at 16:30 HKT 13/Jan/2019

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 4:30 p.m. on 13 January 2019

    Warnings:
    Strong winds in all areas.

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

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    East force 5 to 6.
    A few light rain patches.
    Moderate to rough seas.

    Nan'ao:
    East to northeast force 6 to 7.
    Rough seas.

    Shanwei and South of Hong Kong:
    East force 6 to 7.
    Rough seas.

    Shangchuan Dao:
    East force 5 to 6.
    Moderate to rough seas.

    Outlook for the next 48 hours
    East to northeasterly winds of force 6 to 7, becoming northerly winds of force 6 to 7 later.

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

    Waglan Island Wind east-northeast force 3

    Shantou Wind southeast force 2
      Visibility 25 Kilometres

    Dongsha Wind northeast force 4
      Visibility 10 Kilometres

    Huangmaozhou Wind east force 4

    Macau Wind east force 1
      Visibility 6 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 12:30 HKT 13/JAN/2019
    (Next update at 17:30 HKT 13/JAN/2019)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     NIL.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     A FRESH EASTERLY AIRSTREAM IS BRINGING COOLER
     WEATHER TO THE COAST OF GUANGDONG.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1300 TO 2300 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  090/10-15
       OFFSHORE:  090/20                               22-18
   B.   2000 FT:  100/15                               15
   C.   5000 FT:  100/10                               12
   D.  10000 FT:  250/20                               9
   E.  18000 FT:  280/30                               MS5
   F.  24000 FT:  270/40                               MS17
   G.  30000 FT:  270/55                               MS31
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      2000 - 3500 FT.
   I. WEATHER       : 
      MAINLY CLOUDY WITH LIGHT RAIN AND LOCALIZED
      MIST.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1200 FT  SCT 2500 FT  BKN 8000 FT.
   K. VISIBILITY    : 9 KM.  TEMPO 4000 M IN RAIN/MIST.
   L. 0 DEG. C LEVEL: 16000 FT      10 DEG. C LEVEL(S) : 6000, 8200, 9400 FT
   M. TURBULENCE    : MOD OFFSHORE AND NEAR HILLS.
   N. SEA STATE     : 2.0-2.5 M     SEA TEMPERATURE    : 19 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE TO FRESH EASTERLY WINDS, OCCASIONALLY
     STRONG OFFSHORE.  MAINLY CLOUDY WITH A FEW LIGHT
     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 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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