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Bulletin issued at 10:02 HKT 26/Dec/2018

At 10 a.m. at the Hong Kong Observatory the air temperature was 21 degrees Celsius and the relative humidity 83 per cent.
During the past hour the mean UV Index recorded at King's Park was 2. The intensity of UV radiation was low.

Please be reminded that:

The Fire Danger Warning is Yellow and the fire risk is high.

The air temperatures at other places were:

King's Park 22 degrees;
Wong Chuk Hang 21 degrees;
Ta Kwu Ling 20 degrees;
Lau Fau Shan 19 degrees;
Tai Po 23 degrees;
Sha Tin 21 degrees;
Tuen Mun 21 degrees;
Tseung Kwan O 23 degrees;
Sai Kung 21 degrees;
Cheung Chau 23 degrees;
Chek Lap Kok 22 degrees;
Tsing Yi 20 degrees;
Shek Kong 21 degrees;
Tsuen Wan Ho Koon 19 degrees;
Tsuen Wan Shing Mun Valley 21 degrees;
Hong Kong Park 21 degrees;
Shau Kei Wan 22 degrees;
Kowloon City 23 degrees;
Happy Valley 24 degrees;
Wong Tai Sin 23 degrees;
Stanley 21 degrees;
Kwun Tong 23 degrees;
Sham Shui Po 24 degrees;
Kai Tak Runway Park 23 degrees;
Yuen Long Park 22 degrees;
Tai Mei Tuk 22 degrees.


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


Climatological Information for 26 Dec

Regional Weather in Hong Kong

Information on Tropical Cyclones

Hong Kong Climatology


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UV Index Forecast |  Weather Information for South China Coastal Waters

Bulletin updated at 09:45 HKT 26/Dec/2018

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

The weather is generally fine over the south China coastal areas.

At 10 a.m., the tropical depression to the east of the Philippines was centred about 1390 kilometres east-southeast of Manila. It is forecast to move west-northwest at about 18 kilometres per hour in the general direction of the central part of the Philippines.

Weather forecast for today

Fine. Warm during the day. Light to moderate northeasterly winds.

Outlook : Mainly fine tomorrow. Temperatures falling significantly and it will be windy in the latter part of this week. The weather will be cold with a few rain patches early next week.


(The above forecast period is valid up to 23:59 HKT today, 26/12/2018; 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 26/Dec/2018

GALE WARNING AREAS: TAIWAN STRAIT AND BASHI.

GENERAL SITUATION AT 252100 UTC:
AN INTENSE NORTHEAST MONSOON IS EXPECTED TO AFFECT THE FORECAST AREAS LATER.

MARINE FORECAST FOR 24 HOURS FROM 260100 UTC:

HONG KONG= NE 4-5, 6 LATER. DOWN TO 4000 M IN MIST PATCHES. SEA 2 M, 3 M LATER. SWELL NE 2 M. TEMP 24-18 C. =
KWANGTUNG= E TO NE 5-6, OCNL 7. DOWN TO 2000 M IN MIST PATCHES. SEA UP TO 4 M. SWELL NE 2-3 M. =
TAIWAN STRAIT= NE 6-7, UP TO 8 LATER. DOWN TO 1000 M IN MIST OR LGT RAIN PATCHES. SEA 3-4 M, UP TO 6 M LATER. SWELL NE 3 M. =
BASHI= NE 6-7, UP TO 8 LATER. LGT RAIN PATCHES. SEA 3-4 M, UP TO 6 M LATER. SWELL NE 3-4 M. =
PRATAS= NE 5-6, OCNL 7. DOWN TO 2000 M IN MIST OR LGT RAIN PATCHES. SEA UP TO 4 M. SWELL NE 3 M. =
BALINTANG= NE 6-7. LGT RAIN PATCHES. SEA 3-4 M. SWELL NE 3-4 M. =
SCARBOROUGH= NE 5-6, OCNL 7. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 4 M. SWELL NE 3 M. =
PARACEL= E TO NE 5-6, OCNL 7. DOWN TO 2000 M IN MIST PATCHES. ISOL SQUALLY SHOWERS AND TS LATER. SEA UP TO 4 M. SWELL NE 2-3 M. =
TONKIN= E TO SE 4-5, NE UP TO 6 LATER. DOWN TO 1000 M IN MIST OR LGT RAIN PATCHES. SEA 2 M, UP TO 3 M LATER. SWELL NE 2 M. =
DANANG= E 4-5, OCNL 6. DOWN TO 2000 M IN MIST PATCHES. SEA UP TO 3 M. SWELL NE 2-3 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 09:30 HKT 26/Dec/2018

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 9:30 a.m. on 26 December 2018

    Warnings:
    Strong winds in all areas.

    Weather Situation:
    The northeast monsoon is affecting the coastal waters of Guangdong.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    Northeast force 4 to 5, becoming force 6 later.
    Mist patches.
    Moderate seas, becoming rough later.

    Nan'ao, Shanwei and South of Hong Kong:
    Northeast force 5 to 6, occasionally force 7.
    Moderate to rough seas.

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

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

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

    Waglan Island Wind east-northeast force 1
      Visibility 13 Kilometres

    Shantou Wind south-southeast force 1
      Visibility 1700 Metres in mist

    Dongsha Wind north-northeast force 3
      Visibility 10 Kilometres

    Huangmaozhou Wind east force 3

    Macau Wind north force 3
      Visibility 3600 Metres in mist

    Xisha Wind east-northeast force 2
      Visibility 17 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 09:30 HKT 26/DEC/2018
    (Next update at 12:30 HKT 26/DEC/2018)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     NIL
II.  SYNOPSIS OF THE WEATHER SITUATION :
     THE NORTHEAST MONSOON IS AFFECTING THE COASTAL
     AREAS OF GUANGDONG
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1000 TO 2000 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  040/5-10                             18-24
   B.   2000 FT:  060/10                               18
   C.   5000 FT:  030/10                               13
   D.  10000 FT:  250/15                               10
   E.  18000 FT:  250/20                               0
   F.  24000 FT:  240/20                               MS13
   G.  30000 FT:  250/35                               MS27
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      1000-1800 FT
   I. WEATHER       : 
      MAINLY FINE. LOCALISED MIST.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 3000 FT
   K. VISIBILITY    : 8 KM. TEMPO 4000 M IN MIST.
   L. 0 DEG. C LEVEL: 18000 FT      10 DEG. C LEVEL(S) : 6200, 7400, 10000,11200 FT
   M. TURBULENCE    : NIL
   N. SEA STATE     : 0.5-1.0 M     SEA TEMPERATURE    : 21 DEG
IV.  FURTHER OUTLOOK: 
     LIGHT TO MODERATE NORTHEASTERLY WINDS. MAINLY
     FINE.=

    ===================================================================
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 01:15 HKT 26/Dec/2018 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     21.1 C
Minimum Air Temperature                     18.5 C
Grass Minimum Temperature                   17.7 C
Relative Humidity                        76 - 86 Percent
Rainfall                                       0 mm 
Total rainfall since 1st January          2162.9 mm
Against an average of                     2389.4 mm

Other Stations                Min                  Max
King's Park                  17.8 C               21.4 C
Wong Chuk Hang               18.1 C               21.9 C
Ta Kwu Ling                  16.0 C               21.3 C
Lau Fau Shan                 15.6 C               20.7 C
Tai Po                       16.9 C               19.9 C
Sha Tin                      17.6 C               20.5 C
Tuen Mun                     16.6 C               20.8 C
Tseung Kwan O                17.6 C               21.1 C
Sai Kung                     18.1 C               20.8 C
Cheung Chau                  17.7 C               21.8 C
Chek Lap Kok                 17.9 C               21.3 C
Tsing Yi                     18.4 C               21.3 C
Shek Kong                    16.0 C               21.1 C
Tsuen Wan Ho Koon            16.5 C               20.3 C
Tsuen Wan Shing Mun Valley   17.6 C               21.1 C
Hong Kong Park               18.3 C               21.2 C
Shau Kei Wan                 18.0 C               20.8 C
Kowloon City                 17.7 C               21.6 C
Happy Valley                 18.5 C               21.7 C
Wong Tai Sin                 18.4 C               21.6 C
Stanley                      18.1 C               21.2 C
Kwun Tong                    17.7 C               20.8 C
Sham Shui Po                 17.7 C               21.5 C
Kai Tak Runway Park          18.5 C               21.5 C
Yuen Long Park               15.9 C               21.2 C
Tai Mei Tuk               17.1 C               21.5 C

Duration of sunshine (King's Park):              0.1 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 4.
 

Yesterday's (25 Dec 2018) 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                               0.10
Yuen Ng Fan                         0.12
Tai Mei Tuk                         0.12
Sha Tau Kok                         0.10
Kwun Tong                           0.13
Sai Wan Ho                          0.09
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 25 Dec
     2003copy right image | Important notices | Privacy policy Last revision date: <26 Dec 2018> 

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