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Bulletin issued at 23:02 HKT 15/Jan/2018

At 11 p.m. at the Hong Kong Observatory the air temperature was 15 degrees Celsius and the relative humidity 88 per cent.

The air temperatures at other places were:

King's Park 15 degrees;
Wong Chuk Hang 16 degrees;
Ta Kwu Ling 14 degrees;
Lau Fau Shan 13 degrees;
Tai Po 14 degrees;
Sha Tin 14 degrees;
Tuen Mun 15 degrees;
Tseung Kwan O 14 degrees;
Sai Kung 15 degrees;
Cheung Chau 15 degrees;
Chek Lap Kok 17 degrees;
Tsing Yi 16 degrees;
Shek Kong 14 degrees;
Tsuen Wan Ho Koon 13 degrees;
Tsuen Wan Shing Mun Valley 14 degrees;
Hong Kong Park 15 degrees;
Shau Kei Wan 15 degrees;
Kowloon City 15 degrees;
Happy Valley 14 degrees;
Wong Tai Sin 16 degrees;
Stanley 15 degrees;
Kwun Tong 15 degrees;
Sham Shui Po 15 degrees;
Kai Tak Runway Park 16 degrees;
Yuen Long Park 13 degrees;
Tai Mei Tuk 15 degrees.


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


Climatological Information for 15 Jan

Regional Weather in Hong Kong

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Hong Kong Climatology


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Bulletin updated at 23:15 HKT 15/Jan/2018

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

The winter monsoon affecting southern China continued to moderate today. Locally, it was fine. The weather was mild in the afternoon with temperatures rising to around 20 degrees over parts of the territory. The northeast monsoon is expected to bring generally fine weather to southern China in the next couple of days.

Weather forecast for Hong Kong (Tuesday, 16 Jan 2018)

Mainly fine. Cool in the morning with a minimum temperature of about 15 degrees in the urban areas, and a few degrees lower in the New Territories. There will be some haze. The maximum temperature will be around 21 degrees during the day. Light to moderate northeasterly winds.

Outlook : Fine on Wednesday apart from some haze. Cloudier with a few rain patches in the following couple of days.


(The above forecast period is valid up to 23:59 HKT tomorrow, 16/01/2018; 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 15/Jan/2018

N0 WARNING.

GENERAL SITUATION AT 150900 UTC:
THE NORTHEAST MONSOON IS AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 151300 UTC:

HONG KONG= NE 4-5. FINE. DOWN TO 4000 M IN SOME HAZE TOMORROW. SEA 2 M. SWELL E UP TO 2 M. TEMP 15-20 C. =
KWANGTUNG= NE 4-5, OCNL 6 IN E. FINE. SEA 2 M, UP TO 3 M IN E. SWELL E TO NE 2 M. =
TAIWAN STRAIT= NE 4-5, OCNL 6. FINE. SEA UP TO 3 M. SWELL NE 2 M. =
BASHI= E 5-6, OCNL 7. LGT RAIN PATCHES. SEA UP TO 4 M. SWELL NE 2-3 M. =
PRATAS= NE 5-6. LGT RAIN PATCHES. SEA 2-3 M. SWELL NE 2 M. =
BALINTANG= E 5-6, OCNL 7. LGT RAIN PATCHES. SEA UP TO 4 M. SWELL NE 2-3 M. =
SCARBOROUGH= NE 5-6. FINE. SEA 2-3 M. SWELL NE 2 M. =
PARACEL= NE 5-6. FINE. SEA 2-3 M. SWELL NE 2 M. =
TONKIN= E TO NE 4-5. LGT RAIN PATCHES. SEA 2 M. =
DANANG= NE 4-5. LGT RAIN PATCHES. SEA 2 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

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    Bulletin issued at 23:30 HKT 15/Jan/2018

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 11:30 p.m. on 15 January 2018

    Warnings:
    Strong winds in Nan'ao and Shanwei.

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

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    Northeast force 4 to 5.
    Some haze.
    Moderate seas.

    Nan'ao and Shanwei:
    Northeast force 4 to 5, occasionally force 6.
    Moderate to rough seas.

    South of Hong Kong and Shangchuan Dao:
    Northeast force 4 to 5.
    Moderate seas.

    Outlook for the next 48 hours
    Northeasterly winds of force 4 to 5, occasionally force 6.

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

    Waglan Island Wind north-northeast force 4
      Visibility 11 Kilometres

    Shantou Wind east-northeast force 1
      Visibility 17 Kilometres

    Dongsha Wind northeast force 4
      Visibility 10 Kilometres

    Huangmaozhou Wind east force 5

    Macau Wind southeast force 2
      Visibility 12 Kilometres

    Xisha Wind northeast force 3
      Visibility 18 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 15/JAN/2018
    (Next update at 01:30 HKT 16/JAN/2018)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     NIL.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     THE NORTHEAST MONSOON IS AFFECTING SOUTH CHINA
     COASTAL AREAS.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1800 TO 0400 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  080/10
       OFFSHORE:  080/15 OCNL 20                       18-13
   B.   2000 FT:  080/10-15                            12
   C.   5000 FT:  160/10                               10
   D.  10000 FT:  260/25                               7
   E.  18000 FT:  270/40                               MS5
   F.  24000 FT:  260/35                               MS14
   G.  30000 FT:  250/40                               MS30
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL
   I. WEATHER       : 
      MAINLY FINE.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 4000 FT.
   K. VISIBILITY    : 9 KM.
   L. 0 DEG. C LEVEL: 16000 FT      10 DEG. C LEVEL(S) : 5000 FT
   M. TURBULENCE    : MOD OFFSHORE
   N. SEA STATE     : 1.0-2.5 M     SEA TEMPERATURE    : 17 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE EAST TO NORTHEASTERLY WINDS.  FINE.
     LOCALISED 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.

    The latest significant weather information
    issued by the Hong Kong Observatory at 20:11 HKT on 01 Dec 17

    VHHK SIGMET 4 VALID 010820/011220 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N1642 E11400 - N1736 E11312 - N1812 E11512 - N1642 E11400 TOP FL450 MOV W 05KT NC= VHHK SIGMET 5 VALID 011220/011620 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N1806 E11506 - N1642 E11400 - N1712 E11330 - N1818 E11448 - N1806 E11506 TOP FL420 MOV W 05KT WKN=

    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

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    Bulletin issued at 15:30 HKT 04/Jan/2018


    Tropical Cyclone Warning

    At 040600 UTC, Tropical Depression Bolaven (1801) has weakened into an area of low pressure.

    No further warnings on this area of low pressure will be issued by the Hong Kong Observatory unless regeneration takes place.



    The Hong Kong Observatory's tropical cyclone warnings for shipping are issued about one and a half hours after the time of observation. They incorporate additional information derived from surface and upper-air data and may therefore be slightly different from the real-time satellite or radar-based positions given in the hourly bulletins for public.

    While the forecast positions and track indicate the most likely future path of the tropical cyclone, they may deviate from the actual path taken by the storm.

    Tropical Cyclone Track
    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 15/Jan/2018 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     17.2 C
Minimum Air Temperature                     12.0 C
Grass Minimum Temperature                    9.6 C
Relative Humidity                        54 - 85 Percent
Rainfall                                       0 mm 
Total rainfall since 1st January            41.8 mm
Against an average of                        9.9 mm

Other Stations                Min                  Max
King's Park                  10.7 C               18.3 C
Wong Chuk Hang               11.1 C               18.7 C
Ta Kwu Ling                   5.8 C               20.6 C
Lau Fau Shan                  8.7 C               20.9 C
Tai Po                        9.5 C               17.8 C
Sha Tin                       8.6 C               19.0 C
Tuen Mun                      9.9 C               21.3 C
Tseung Kwan O                 9.6 C               18.6 C
Sai Kung                      9.6 C               16.7 C
Cheung Chau                  11.6 C               18.8 C
Chek Lap Kok                 12.0 C               19.7 C
Tsing Yi                     11.2 C               20.1 C
Shek Kong                     8.8 C               20.7 C
Tsuen Wan Ho Koon             8.8 C               20.6 C
Tsuen Wan Shing Mun Valley    9.4 C               20.4 C
Hong Kong Park               11.3 C               18.9 C
Shau Kei Wan                 11.2 C               17.3 C
Kowloon City                 10.9 C               20.0 C
Happy Valley                 11.4 C               18.9 C
Wong Tai Sin                 11.6 C               19.4 C
Stanley                      12.3 C               17.1 C
Kwun Tong                    11.1 C               17.8 C
Sham Shui Po                 11.0 C               20.2 C
Kai Tak Runway Park          12.5 C               17.2 C
Yuen Long Park                7.3 C               21.3 C
Tai Mei Tuk               10.3 C               18.8 C

Duration of sunshine (King's Park):              9.9 H
The mean UV index recorded at King's Park yesterday was 3,
the UV intensity was Moderate.
The maximum UV index for yesterday was 6.
Sea surface temperature (Waglan Island):        16.3 C 

Yesterday's (14 Jan 2018) average ambient gamma radiation
dose rate taken outdoors in Hong Kong ranged from 0.08 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                           0.08
Tap Mun                             0.08
Kat O                               0.10
Yuen Ng Fan                         0.12
Tai Mei Tuk                         0.12
Sha Tau Kok                         0.10
Kwun Tong                           0.12
Sai Wan Ho                          0.09
King's Park                         0.14
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 14 Jan
     2003copy right image | Important notices | Privacy policy Last revision date: <15 Jan 2018> 

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