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Bulletin issued at 09:02 HKT 23/Dec/2016

At 9 a.m. at the Hong Kong Observatory the air temperature was 19 degrees Celsius and the relative humidity 74 per cent.
During the past hour the mean UV Index recorded at King's Park was 0.3. The intensity of UV radiation was low.

The air temperatures at other places were:

King's Park 19 degrees;
Wong Chuk Hang 19 degrees;
Ta Kwu Ling 16 degrees;
Lau Fau Shan 16 degrees;
Tai Po 17 degrees;
Sha Tin 18 degrees;
Tuen Mun 17 degrees;
Tseung Kwan O 18 degrees;
Sai Kung 18 degrees;
Cheung Chau 18 degrees;
Chek Lap Kok 18 degrees;
Tsing Yi 19 degrees;
Tsuen Wan Ho Koon 19 degrees;
Tsuen Wan Shing Mun Valley 19 degrees;
Hong Kong Park 19 degrees;
Shau Kei Wan 18 degrees;
Kowloon City 18 degrees;
Happy Valley 20 degrees;
Wong Tai Sin 19 degrees;
Stanley 19 degrees;
Kwun Tong 18 degrees;
Sham Shui Po 19 degrees;
Kai Tak Runway Park 19 degrees;
Yuen Long Park 17 degrees.

Between midnight and 9 a.m. the minimum temperature was 19.1 degrees Celsius at the Hong Kong Observatory.


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


Climatological Information for 23 Dec

Regional Weather in Hong Kong

Information on Tropical Cyclones

Hong Kong Climatology


Local Weather Forecast
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Bulletin updated at 08:45 HKT 23/Dec/2016

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

A cooler northeast monsoon is affecting the coast of Guangdong. Locally, temperatures over most parts of the territory this morning were three to four degrees lower than those of yesterday.

At 8 a.m., Severe Tropical Storm Nock-ten was centred about 1370 kilometres east-southeast of Manila. It is forecast to move west-northwest at about 26 kilometres per hour in the general direction of the central part of the Philippines.

Weather forecast for today

Mainly cloudy. The maximum temperature will be about 22 degrees. Moderate northeasterly winds, becoming fresh easterlies, occasionally strong offshore.

Outlook : Windier on Christmas Eve and Christmas Day. Mild on Monday. Becoming cold midweek next week.


(The above forecast period is valid up to 23:59 HKT today, 23/12/2016; 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 23/Dec/2016

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

GENERAL SITUATION AT 222100 UTC:
AN INTENSE NORTHEAST MONSOON IS AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 230100 UTC:

HONG KONG= NE 5-6, BEC E 7. FINE. SEA 2-3 M, BEC 4 M. SWELL NE UP TO 2 M. TEMP 22-18 C. =
KWANGTUNG= NE 6-7, UP TO 8 IN E. FINE. SEA 3-4 M, UP TO 6 M IN E. SWELL NE 2 M, 3 M LATER. =
TAIWAN STRAIT= NE 8. FINE. SEA 6 M. SWELL NE 3-5 M. =
BASHI= NE 8, OCNL 9 LATER. RAIN PATCHES. SEA 6 M, UP TO 8 M LATER. SWELL NE 3 M, UP TO 5 M LATER. =
PRATAS= NE 7-8. FINE. RAIN PATCHES AT FIRST.. SEA 4-6 M. SWELL NE 3 M. =
BALINTANG= NE 8, OCNL 9 LATER. RAIN PATCHES. SEA 6 M, UP TO 8 M LATER. SWELL NE 3 M, UP TO 5 M LATER. =
SCARBOROUGH= NE 7-8, OCNL 9 LATER. FINE. SEA 4-6 M, UP TO 8 M LATER. SWELL NE 2-3 M. =
PARACEL= NE 6-7, BEC 8. RAIN PATCHES. SEA 3-4 M, BEC 6 M. SWELL NE 2 M, 3 M LATER. =
TONKIN= NE 6, OCNL 7. FINE. SEA UP TO 4 M. =
DANANG= NE 6-7. RAIN PATCHES. SEA 3-4 M. SWELL NE 2 M, UP TO 3 M LATER. =
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 09:30 HKT 23/Dec/2016

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 9:30 a.m. on 23 December 2016

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

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    Northeast force 5 to 6, becoming east force 7.
    Moderate to rough seas.

    Nan'ao:
    Northeast force 7 to 8.
    Rough to very rough seas.

    Shanwei:
    East to northeast force 6 to 7, becoming force 8.
    Rough seas, becoming very rough.

    South of Hong Kong:
    East to northeast force 6 to 7, up to force 8 overnight.
    Rough seas, becoming very rough later.

    Shangchuan Dao:
    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-northeast force 4
      Visibility 14 Kilometres

    Shantou Wind northeast force 1
      Visibility 28 Kilometres

    Huangmaozhou Wind northeast force 4

    Macau Wind north force 3
      Visibility 10 Kilometres

    Xisha Wind east-northeast force 3
      Visibility 21 Kilometres

  • Explanation of Seas or Sea Waves
  • Explanation of Swells
  • Descriptive Terms of Wind Speeds
  • Visibility Readings in Hong Kong Waters
  • Map showing forecast areas
  • Tidal Information

    • WEATHER FORECAST FOR LOCAL AVIATION
    Traditional Chinese Simplified Chinese

    Weather Forecast for Local Aviation

    Bulletin issued at 09:30 HKT 23/DEC/2016
    (Next update at 17:30 HKT 23/DEC/2016)
    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 COASTAL
     AREAS OF GUANGDONG.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1000 TO 2000 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  040/10-15
       OFFSHORE:  080/20-25                            19-23
   B.   2000 FT:  080/20-25                            15
   C.   5000 FT:  170/10                               12
   D.  10000 FT:  240/15                               5
   E.  18000 FT:  260/30                               MS5
   F.  24000 FT:  270/35                               MS17
   G.  30000 FT:  270/50                               MS32
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      4800 - 5000 FT
   I. WEATHER       : 
      MAINLY CLOUDY.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 2500 FT SCT 4000 FT
   K. VISIBILITY    : 10 KM,
   L. 0 DEG. C LEVEL: 14000 FT      10 DEG. C LEVEL(S) : 8400 FT
   M. TURBULENCE    : MOD TO SEV.
   N. SEA STATE     : 3.0-4.0 M     SEA TEMPERATURE    : 21 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE TO FRESH EASTERLY, OCCASIONALLY STRONG.
     CLOUDY WITH ONE OR TWO RAIN PATCHES.=

    ===================================================================
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.

    sigmet
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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 13:10 HKT on 26 Nov 16

    VHHK SIGMET 1 VALID 260110/260510 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N1854 E11200 - N1930 E11130 - N2012 E11130 - N2036 E11230 - N1912 E11230 - N1854 E11200 TOP FL420 MOV S 10KT NC= VHHK SIGMET 2 VALID 260510/260910 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N1754 E11254 - N1924 E11136 - N2000 E11236 - N1754 E11254 TOP FL420 MOV SSE 15KT NC=

    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 23/Dec/2016 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     24.8 C
Minimum Air Temperature                     19.7 C
Grass Minimum Temperature                   18.2 C
Relative Humidity                        60 - 95 Percent
Rainfall                                     0.1 mm 
Total rainfall since 1st January          3023.1 mm
Against an average of                     2386.7 mm

Other Stations                Min                  Max
King's Park                  19.0 C               26.1 C
Wong Chuk Hang               19.6 C               26.3 C
Ta Kwu Ling                  16.8 C               25.8 C
Lau Fau Shan                 16.8 C               24.4 C
Tai Po                       17.1 C               25.0 C
Sha Tin                      18.4 C               26.0 C
Tuen Mun                     18.0 C               26.3 C
Tseung Kwan O                17.4 C               26.8 C
Sai Kung                     18.0 C               24.7 C
Cheung Chau                  17.6 C               25.1 C
Chek Lap Kok                 19.1 C               24.8 C
Tsing Yi                     19.4 C               27.2 C
Shek Kong                    17.4 C               26.0 C
Tsuen Wan Ho Koon            17.0 C               24.7 C
Tsuen Wan Shing Mun Valley   18.3 C               28.2 C
Hong Kong Park               19.6 C               27.1 C
Shau Kei Wan                 18.6 C               27.4 C
Kowloon City                 18.6 C               27.1 C
Happy Valley                 19.9 C               27.7 C
Wong Tai Sin                 19.2 C               27.3 C
Stanley                      19.4 C               25.8 C
Kwun Tong                    19.1 C               27.7 C
Sham Shui Po                 18.9 C               27.8 C
Kai Tak Runway Park          19.8 C               27.0 C
Yuen Long Park               17.4 C               27.1 C

Duration of sunshine (King's Park):              7.1 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 5.
Sea surface temperature (Waglan Island):        22.0 C 

Yesterday's (22 Dec 2016) 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                             0.09
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                        0.15

Note

      

    1. From readings taken at various locations in Hong Kong during
the period 1987-2015, the background ambient gamma radiation
levels may vary between 0.06 and 0.30 microsievert per hour.

    2. The extent of health effects to a person as a result of
exposure to radiation is expressed by a physical quantity
called equivalent dose, in unit of sievert.  Protective
action may be required if there is an increase in the
ambient gamma dose rate above background such that the total
additional dose is expected to exceed 5000 microsieverts in
a relatively short period of time. For example, a dose of
5000 microsieverts may be reached when the ambient gamma
dose rate is 1000 microsieverts per hour (several thousand
times above background) and lasts for 5 hours.

    3. The readings of ambient gamma radiation level from
instrument are expressed in unit of gray, which is
numerically equal to the gamma dose expressed in sievert.
    Climatological Information for 22 Dec
     2003copy right image | Important notices | Privacy policy Last revision date: <23 Dec 2016> 

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