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Bulletin issued at 15:02 HKT 18/Jan/2019

At 3 p.m. at the Hong Kong Observatory the air temperature was 18 degrees Celsius and the relative humidity 74 per cent.
During the past hour the mean UV Index recorded at King's Park was 1. The intensity of UV radiation was low.

The air temperatures at other places were:

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


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


Climatological Information for 18 Jan

Regional Weather in Hong Kong

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Bulletin updated at 14:45 HKT 18/Jan/2019

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

The northeast monsoon affecting the coast of Guangdong is being replaced by an easterly airstream gradually. Meanwhile, a band of clouds is covering the region.

Weather forecast for this afternoon and tonight

Mainly cloudy. Bright periods in the afternoon. Moderate to fresh easterly winds.

Outlook : Mainly cloudy with a few rain patches over the weekend. Temperatures falling significantly early next week.


(The above forecast period is valid up to 23:59 HKT today, 18/01/2019; 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 09:00 HKT 18/Jan/2019

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

GENERAL SITUATION AT 172100 UTC:
THE NORTHEAST MONSOON IS AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 180100 UTC:

HONG KONG= E 5-6, UP TO 7 AT FIRST. LGT RAIN PATCHES. SEA 2-3 M, UP TO 4 M AT FIRST. SWELL NE 2 M. TEMP 20-17 C. =
KWANGTUNG= E TO NE 6-7, UP TO 8 IN E AT FIRST. RAIN PATCHES. SEA 3-4 M, UP TO 6 M IN E AT FIRST. SWELL NE 2 M. =
TAIWAN STRAIT= NE 6-7, UP TO 8 AT FIRST. FINE. SEA 3-4 M, UP TO 6 M AT FIRST. SWELL NE 2-3 M. =
BASHI= E TO NE 7-8. RAIN PATCHES. SEA 4-6 M. SWELL NE 2-3 M. =
PRATAS= E TO NE 6-7, UP TO 8 AT FIRST. RAIN PATCHES. SEA 3-4 M, UP TO 6 M AT FIRST. SWELL NE 2-3 M. =
BALINTANG= E TO NE 7-8. RAIN PATCHES. SEA 4-6 M. SWELL NE 2-3 M. =
SCARBOROUGH= E TO NE 6-7, UP TO 8 AT FIRST. RAIN PATCHES. SEA 3-4 M, UP TO 6 M AT FIRST. SWELL NE 2-3 M. =
PARACEL= E TO NE 6-7, UP TO 8 AT FIRST. RAIN PATCHES. SEA 2-3 M, UP TO 4 M AT FIRST. SWELL NE 2-3 M. =
TONKIN= E 4-5, N TO NE 5-6 AT FIRST. RAIN PATCHES. SEA 2-3 M. =
DANANG= E TO NE 5-6, UP TO 7 AT FIRST. RAIN PATCHES. SEA 2-3 M, UP TO 4 M AT FIRST. 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
  • 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 12:30 HKT 18/Jan/2019

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 12:30 p.m. on 18 January 2019

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

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    East force 5 to 6, occasionally force 7.
    A few light rain patches.
    Moderate to rough seas.

    Nan'ao and Shanwei:
    East to northeast force 6 to 7, up to force 8 at first.
    Rough seas, very rough at first.

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

    Outlook for the next 48 hours
    East to northeasterly winds of force 5 to 6, becoming northerly winds of force 6 to 7 later.

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

    Waglan Island Wind northeast force 4
      Visibility 10 Kilometres

    Shantou Wind east-northeast force 2
      Visibility 25 Kilometres

    Dongsha Wind northeast force 4
      Visibility 10 Kilometres

    Huangmaozhou Wind east force 6

    Macau Wind north-northeast force 3
      Visibility 8 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 12:30 HKT 18/JAN/2019
    (Next update at 17:30 HKT 18/JAN/2019)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     STRONG WINDS AND SEV TURB.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     THE NORTHEAST MONSOON IS AFFECTING THE SOUTH
     CHINA COASTAL AREAS.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1300 TO 2300 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  070/10
       OFFSHORE:  070/15-20, OCNL 25 AT FIRST          20-17
   B.   2000 FT:  100/15-20                            11
   C.   5000 FT:  170/15                               12
   D.  10000 FT:  200/15                               9
   E.  18000 FT:  260/25                               MS4
   F.  24000 FT:  250/40                               MS17
   G.  30000 FT:  250/60                               MS30
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      3400-5000FT
   I. WEATHER       : 
      MAINLY CLOUDY. BRIGHT PERIODS IN THE AFTERNOON.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 2500 FT.
   K. VISIBILITY    : 7 KM.
   L. 0 DEG. C LEVEL: 16000 FT      10 DEG. C LEVEL(S) : 2600,4600,6400 FT
   M. TURBULENCE    : MOD TO SEV OFFSHORE. MOD NEAR HILLS
   N. SEA STATE     : 2.5-3.0 M     SEA TEMPERATURE    : 18 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE TO FRESH EASTERLY WINDS.  MAINLY CLOUDY.=

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

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

Hong Kong Observatory
Maximum Air Temperature                     19.5 C
Minimum Air Temperature                     14.6 C
Grass Minimum Temperature                   13.8 C
Relative Humidity                        59 - 78 Percent
Rainfall                                       0 mm 
Total rainfall since 1st January             4.4 mm
Against an average of                       11.9 mm

Other Stations                Min                  Max
King's Park                  13.7 C               20.9 C
Wong Chuk Hang               13.7 C               20.1 C
Ta Kwu Ling                  10.9 C               20.9 C
Lau Fau Shan                 12.6 C               20.0 C
Tai Po                       12.8 C               18.8 C
Sha Tin                      13.2 C               20.3 C
Tuen Mun                     13.5 C               20.8 C
Tseung Kwan O                13.2 C               21.3 C
Sai Kung                     13.5 C               19.1 C
Cheung Chau                  13.3 C               22.3 C
Chek Lap Kok                 13.8 C               19.5 C
Tsing Yi                     14.2 C               20.9 C
Shek Kong                    12.6 C               21.5 C
Tsuen Wan Ho Koon            11.7 C               21.0 C
Tsuen Wan Shing Mun Valley   13.4 C               22.0 C
Hong Kong Park               14.7 C               20.5 C
Shau Kei Wan                 13.6 C               19.6 C
Kowloon City                 13.2 C               22.2 C
Happy Valley                 14.8 C               21.5 C
Wong Tai Sin                 13.6 C               21.8 C
Stanley                      14.3 C               19.2 C
Kwun Tong                    13.5 C               21.0 C
Sham Shui Po                 13.8 C               21.4 C
Kai Tak Runway Park          14.0 C               20.6 C
Yuen Long Park               12.7 C               21.5 C
Tai Mei Tuk               12.9 C               22.2 C

Duration of sunshine (King's Park):              8.1 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 6.
 

Yesterday's (17 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                         0.10
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 17 Jan
     2003copy right image | Important notices | Privacy policy Last revision date: <18 Jan 2019> 

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