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Bulletin issued at 00:02 HKT 16/Jan/2019

At midnight at the Hong Kong Observatory the air temperature was 19 degrees Celsius and the relative humidity 75 per cent.

The air temperatures at other places were:

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


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


Climatological Information for 16 Jan

Regional Weather in Hong Kong

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Hong Kong Climatology


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Bulletin updated at 00:00 HKT 16/Jan/2019

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

The northeast monsoon reached the south China coastal areas yesterday. Locally, it was mainly cloudy with a few rain patches. The visibility was rather low in some areas. Under the influence of the northeast monsoon, the weather over the south China coast will be rather cool with a few rain patches today and tomorrow.

Weather forecast for Hong Kong (Wednesday, 16 Jan 2019)

Cloudy with one or two rain patches. Becoming cool with temperatures ranging between 15 and 19 degrees. Moderate north to northeasterly winds, fresh at times.

Outlook : Rather cool on Thursday morning and the weather will improve during the day. Temperatures will rise slightly during the weekend.


(The above forecast period is valid up to 23:59 HKT today, 16/01/2019; 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 15/Jan/2019

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

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

MARINE FORECAST FOR 24 HOURS FROM 151300 UTC:

HONG KONG= N TO NE 5-6, BEC 7. RAIN PATCHES. DOWN TO 4000 M IN MIST PATCHES AT FIRST. SEA 2-3 M, BEC 4 M. SWELL E UP TO 2 M. TEMP 15-19 C. =
KWANGTUNG= N TO NE 6-7, 8 IN E. RAIN PATCHES. DOWN TO 4000 M IN MIST PATCHES AT FIRST. SEA 3-4 M, 6 M IN E. SWELL NE 2 M, UP TO 3 M LATER. =
TAIWAN STRAIT= N TO NE 7-8. RAIN PATCHES. DOWN TO 4000 M IN MIST PATCHES AT FIRST. SEA 4-6 M. SWELL N TO NE 2-3 M. =
BASHI= N TO NE 6-7, BEC 8. RAIN PATCHES. SEA 3-4 M, BEC 6 M. SWELL N TO NE 2 M, 3 M LATER. =
PRATAS= N TO NE 6-7, UP TO 8 IN N. RAIN PATCHES. SEA 3-4 M, UP TO 6 M IN N. SWELL NE 2 M, UP TO 3 M LATER. =
BALINTANG= NE 6-7. RAIN PATCHES. SEA 3-4 M. SWELL NE 2 M, 3 M LATER. =
SCARBOROUGH= NE 5-6. FINE. SEA 2-3 M. SWELL NE 2 M, 3 M LATER. =
PARACEL= N TO NE 6-7. LGT RAIN PATCHES. SEA 3-4 M. SWELL NE 2 M. =
TONKIN= N TO NE 6-7. RAIN PATCHES. DOWN TO 4000 M IN MIST PATCHES AT FIRST. SEA 3-4 M. SWELL NE UP TO 2 M. =
DANANG= N TO NE 6-7. RAIN PATCHES. SEA 3-4 M. SWELL NE 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
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    Bulletin issued at 23:30 HKT 15/Jan/2019

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 11:30 p.m. on 15 January 2019

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

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

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    North to northeast force 5 to 6, becoming force 7.
    A few rain patches, mist patches at first.
    Moderate to rough seas.

    Nan'ao and Shanwei:
    North to northeast force 7 to 8.
    Rough to very rough seas.

    South of Hong Kong:
    North to northeast force 6 to 7, becoming force 8.
    Rough seas, becoming very rough.

    Shangchuan Dao:
    North to northeast force 6 to 7.
    Rough seas.

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

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

    Waglan Island Wind north force 4
      Visibility 13 Kilometres

    Shantou Wind east-northeast force 2
      Visibility 8 Kilometres

    Huangmaozhou Wind north-northeast force 3

    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 17:30 HKT 15/JAN/2019
    (Next update at 01:30 HKT 16/JAN/2019)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     NIL
II.  SYNOPSIS OF THE WEATHER SITUATION :
     THE NORTHEAST MONSOON IS EXPECTED TO AFFECT THE
     SOUTH CHINA COASTAL AREAS OVERNIGHT.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1800 TO 0400 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  010/10-15
       OFFSHORE:  010/10-15, OCNL 20 LATER             21-14
   B.   2000 FT:  030/10-15, OCNL 20 LATER             13
   C.   5000 FT:  090/10                               12
   D.  10000 FT:  230/20                               4
   E.  18000 FT:  240/40                               MS5
   F.  24000 FT:  260/55                               MS17
   G.  30000 FT:  260/65                               MS29
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL
   I. WEATHER       : 
      CLOUDY WITH A FEW LIGHT RAIN PATCHES. LOCALISED
      MIST.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1000 FT  SCT 2000 FT  BKN 8000 FT.
   K. VISIBILITY    : 7 KM.  TEMPO 2500 M IN RAIN/MIST.
   L. 0 DEG. C LEVEL: 15500 FT      10 DEG. C LEVEL(S) : 6200 FT
   M. TURBULENCE    : MOD OFFSHORE AND NEAR HILLS.
   N. SEA STATE     : 2.0-2.5 M     SEA TEMPERATURE    : 19 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE NORTH TO NORTHEASTERLY WINDS,
     OCCASIONALLY FRESH OFFSHORE. CLOUDY WITH A FEW
     LIGHT RAIN PATCHES. LOCALISED MIST.=

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

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

Hong Kong Observatory
Maximum Air Temperature                     21.1 C
Minimum Air Temperature                     17.0 C
Grass Minimum Temperature                   16.8 C
Relative Humidity                        75 - 96 Percent
Rainfall                                     4.0 mm 
Total rainfall since 1st January             4.4 mm
Against an average of                       10.7 mm

Other Stations                Min                  Max
King's Park                  16.4 C               21.8 C
Wong Chuk Hang               16.7 C               22.0 C
Ta Kwu Ling                  17.0 C               22.3 C
Lau Fau Shan                 16.5 C               21.0 C
Tai Po                       16.6 C               21.0 C
Sha Tin                      17.1 C               22.5 C
Tuen Mun                     17.2 C               21.7 C
Tseung Kwan O                16.4 C               22.3 C
Sai Kung                     17.1 C               21.8 C
Cheung Chau                  16.4 C               21.6 C
Chek Lap Kok                 17.5 C               21.5 C
Tsing Yi                     17.2 C               22.4 C
Shek Kong                    17.2 C               22.6 C
Tsuen Wan Ho Koon            16.4 C               21.3 C
Tsuen Wan Shing Mun Valley   17.1 C               22.5 C
Hong Kong Park               16.5 C               22.0 C
Shau Kei Wan                 16.2 C               22.1 C
Kowloon City                 16.4 C               22.7 C
Happy Valley                 17.0 C               23.0 C
Wong Tai Sin                 17.0 C               23.0 C
Stanley                      16.5 C               21.1 C
Kwun Tong                    16.3 C               22.9 C
Sham Shui Po                 16.9 C               22.5 C
Kai Tak Runway Park          17.1 C               22.5 C
Yuen Long Park               17.0 C               22.3 C
Tai Mei Tuk               16.7 C               21.8 C

Duration of sunshine (King's Park):              1.2 H
The mean UV index recorded at King's Park yesterday was 1,
the UV intensity was Low.
The maximum UV index for yesterday was 4.
 

Yesterday's (15 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                           0.10
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 15 Jan
     2003copy right image | Important notices | Privacy policy Last revision date: <16 Jan 2019> 

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