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Bulletin issued at 16:02 HKT 22/Dec/2018

At 4 p.m. at the Hong Kong Observatory the air temperature was 23 degrees Celsius and the relative humidity 70 per cent.
During the past hour the mean UV Index recorded at King's Park was 2. The intensity of UV radiation was low.

The air temperatures at other places were:

King's Park 24 degrees;
Wong Chuk Hang 25 degrees;
Ta Kwu Ling 27 degrees;
Lau Fau Shan 25 degrees;
Tai Po 24 degrees;
Sha Tin 25 degrees;
Tuen Mun 26 degrees;
Tseung Kwan O 23 degrees;
Sai Kung 23 degrees;
Cheung Chau 24 degrees;
Chek Lap Kok 25 degrees;
Tsing Yi 25 degrees;
Shek Kong 27 degrees;
Tsuen Wan Ho Koon 25 degrees;
Tsuen Wan Shing Mun Valley 26 degrees;
Hong Kong Park 24 degrees;
Shau Kei Wan 22 degrees;
Kowloon City 25 degrees;
Happy Valley 26 degrees;
Wong Tai Sin 25 degrees;
Stanley 23 degrees;
Kwun Tong 23 degrees;
Sham Shui Po 25 degrees;
Kai Tak Runway Park 22 degrees;
Yuen Long Park 26 degrees;
Tai Mei Tuk 23 degrees.


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


Climatological Information for 22 Dec

Regional Weather in Hong Kong

Information on Tropical Cyclones

Hong Kong Climatology


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Bulletin updated at 16:15 HKT 22/Dec/2018

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

It was sunny in the afternoon with temperatures generally rising to 25 degrees or above. Meanwhile, pressure is rising over central China. A northeast monsoon is expected to reach the south China coast tomorrow.

Weather forecast for tonight and tomorrow

Becoming cloudy with relatively low visibility in some areas. Temperatures will linger around 22 degrees at first tomorrow. Light to moderate northerly winds, becoming fresh with one or two rain patches tomorrow. It will become cooler with temperatures over the urban areas falling to around 19 degrees, and a couple of degrees lower in the New Territories.

Outlook : Cooler with light rain on Monday. The weather will be brighter over the Christmas holidays. Temperatures falling significantly in the latter part of next week.


(The above forecast period is valid up to 23:59 HKT tomorrow, 23/12/2018; 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 09:00 HKT 22/Dec/2018

N0 WARNING.

GENERAL SITUATION AT 212100 UTC:
AN EASTERLY AIRSTREAM IS GENERALLY AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 220100 UTC:

HONG KONG= E TO NE 5-6, N 6-7 LATER. DOWN TO 4000 M IN MIST AND LGT RAIN PATCHES LATER. SEA 2-3 M, 3-4 M LATER. SWELL E TO NE UP TO 2 M. TEMP 24-19 C. =
KWANGTUNG= E TO NE 5-6, N 6-7 LATER. DOWN TO 4000 M IN MIST AND LGT RAIN PATCHES LATER. SEA 2-3 M, 3-4 M LATER. SWELL E TO NE 2 M. =
TAIWAN STRAIT= NE 5-6, 7 LATER. LGT RAIN PATCHES LATER. SEA 2-3 M, 4 M LATER. =
BASHI= E 5-6, OCNL 7. LGT RAIN PATCHES. SEA UP TO 4 M. SWELL E TO NE 2 M. =
PRATAS= E TO NE 5-6. LGT RAIN PATCHES. SEA 2-3 M. SWELL E TO NE 2 M. =
BALINTANG= E 5-6, OCNL 7. LGT RAIN PATCHES. SEA UP TO 4 M. SWELL E TO NE 2 M. =
SCARBOROUGH= NE 5-6, OCNL 7. LGT RAIN PATCHES. SEA UP TO 4 M. SWELL E TO NE 2 M. =
PARACEL= E TO NE 4-5, OCNL 6. LGT RAIN PATCHES. SEA UP TO 3 M. SWELL E TO NE 2 M. =
TONKIN= E TO SE 4-5, N 6-7 LATER. DOWN TO 4000 M IN MIST AND LGT RAIN PATCHES LATER. SEA UP TO 2 M, 3-4 M LATER. =
DANANG= E TO SE 4-5. CLD. SEA UP TO 2 M. SWELL E 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 16:30 HKT 22/Dec/2018

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 4:30 p.m. on 22 December 2018

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

    Weather Situation:
    Pressure is rising over central China. A northeast monsoon is expected to reach the south China coastal waters tomorrow.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    Northeast force 4 to 5, force 6 to 7 later.
    A few rain patches, visibility relatively low in some areas at first.
    Moderate seas, becoming rough later.

    Nan'ao, Shanwei, South of Hong Kong and Shangchuan Dao:
    Northeast force 5 to 6, force 7 to 8 later.
    Moderate to rough seas, becoming very rough later.

    Outlook for the next 48 hours
    North to northeasterly winds of force 7 to 8.

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

    Waglan Island Wind east-northeast force 3
      Visibility 9 Kilometres

    Shantou Wind east force 2
      Visibility 15 Kilometres

    Dongsha Wind northeast force 4
      Visibility 9 Kilometres in rain

    Huangmaozhou Wind east force 4

    Macau Wind northeast force 2
      Visibility 8 Kilometres

    Xisha Wind northeast force 2
      Visibility 20 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 22/DEC/2018
    (Next update at 17:30 HKT 22/DEC/2018)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     NIL.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     AN EASTERLY AIRSTREAM IS AFFECTING THE COAST OF
     GUANGDONG.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1300 TO 2300 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  090/5-10
       OFFSHORE:  090/15-20                            26-22
   B.   2000 FT:  100/15                               17
   C.   5000 FT:  120/10                               13
   D.  10000 FT:  210/15                               11
   E.  18000 FT:  230/20                               MS5
   F.  24000 FT:  240/30                               MS15
   G.  30000 FT:  240/35                               MS25
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      2000-2600 FT
   I. WEATHER       : 
      SUNNY PERIODS. LOCALISED MIST/HAZE.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 3000 FT SCT 4500 FT.
   K. VISIBILITY    : 7 KM. TEMPO 4000 M IN MIST/HAZE.
   L. 0 DEG. C LEVEL: 15500 FT      10 DEG. C LEVEL(S) : 10400 FT
   M. TURBULENCE    : MOD OFFSHORE AND  NEAR HILLS
   N. SEA STATE     : 2.0-2.5 M     SEA TEMPERATURE    : 21 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE NORTHEASTERLY WINDS. MAINLY CLOUDY WITH
     A FEW 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)

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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 22/Dec/2018 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     25.0 C
Minimum Air Temperature                     21.4 C
Grass Minimum Temperature                   19.0 C
Relative Humidity                        76 - 94 Percent
Rainfall                                       0 mm 
Total rainfall since 1st January          2152.3 mm
Against an average of                     2386.5 mm

Other Stations                Min                  Max
King's Park                  20.4 C               25.6 C
Wong Chuk Hang               20.1 C               26.1 C
Ta Kwu Ling                  20.6 C               27.3 C
Lau Fau Shan                 19.8 C               27.2 C
Tai Po                       20.4 C               24.2 C
Sha Tin                      20.5 C               25.9 C
Tuen Mun                     20.8 C               26.6 C
Tseung Kwan O                20.5 C               24.8 C
Sai Kung                     20.8 C               24.2 C
Cheung Chau                  19.8 C               25.7 C
Chek Lap Kok                 21.9 C               29.0 C
Tsing Yi                     20.8 C               27.1 C
Shek Kong                    19.8 C               28.1 C
Tsuen Wan Ho Koon            19.1 C               27.4 C
Tsuen Wan Shing Mun Valley   19.7 C               27.3 C
Hong Kong Park               20.5 C               26.0 C
Shau Kei Wan                 20.3 C               24.4 C
Kowloon City                 20.2 C               27.5 C
Happy Valley                 20.7 C               25.9 C
Wong Tai Sin                 20.5 C               26.9 C
Stanley                      20.6 C               23.9 C
Kwun Tong                    20.3 C               25.3 C
Sham Shui Po                 21.0 C               27.1 C
Kai Tak Runway Park          21.1 C               24.4 C
Yuen Long Park               19.5 C               29.6 C
Tai Mei Tuk               20.5 C               26.1 C

Duration of sunshine (King's Park):              8.7 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.
 

Yesterday's (21 Dec 2018) average ambient gamma radiation
dose rate taken outdoors in Hong Kong ranged from 0.09 to
0.14 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                               0.10
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                        0.14

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 21 Dec
     2003copy right image | Important notices | Privacy policy Last revision date: <22 Dec 2018> 

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