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Bulletin issued at 12:02 HKT 12/Dec/2016

At noon at the Hong Kong Observatory the air temperature was 23 degrees Celsius and the relative humidity 67 per cent.
During the past hour the mean UV Index recorded at King's Park was 5. The intensity of UV radiation was moderate.

The air temperatures at other places were:

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

A trace of rainfall was recorded at the Hong Kong Observatory between midnight last night and midday today.


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


Climatological Information for 12 Dec

Regional Weather in Hong Kong

Information on Tropical Cyclones

Hong Kong Climatology


Local Weather Forecast
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Local Weather Forecast

Automatic Regional Weather Forecast in Hong Kong & Pearl River Delta Region

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UV Index Forecast |  Weather Information for South China Coastal Waters

Bulletin updated at 11:45 HKT 12/Dec/2016

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

The northeast monsoon now affecting the coast of Guangdong is moderating gradually. Besides, the area of low pressure over the southern part of the South China Sea is bringing unsettled weather to the region.

Weather forecast for this afternoon and tonight

Mainly fine and dry in the afternoon. Cloudy periods tonight. Moderate easterly winds.

Outlook : Warm during the day tomorrow. Becoming cool significantly in the following couple of days.


(The above forecast period is valid up to 23:59 HKT today, 12/12/2016; Regular update at : around 45 minutes past each hour, 16:15 HKT and 23:15 HKT)

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MARINE FORECAST
Traditional Chinese Simplified Chinese

Marine Forecast

Weather Information for the Marine Community

Bulletin issued at 09:00 HKT 12/Dec/2016

N0 WARNING.

GENERAL SITUATION AT 112100 UTC:
THE NORTHEAST MONSOON IS AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 120100 UTC:

HONG KONG= E 5-6. A FEW RAIN PATCHES. SEA 2-3 M. SWELL E 2 M. TEMP 23-20 C. =
KWANGTUNG= E TO NE 5-6, UP TO 7 AT FIRST. RAIN PATCHES. SEA 2-3 M, UP TO 4 M AT FIRST. SWELL E TO NE 2-3 M. =
TAIWAN STRAIT= NE 5, OCNL 6. RAIN PATCHES. SEA UP TO 3 M. SWELL NE 2-3 M. =
BASHI= E 6, OCNL 7. RAIN PATCHES. SEA UP TO 4 M. SWELL NE 2-3 M. =
PRATAS= E TO NE 6, OCNL 7. CLD. SEA UP TO 4 M. SWELL NE 2-3 M. =
BALINTANG= E 6, OCNL 7. RAIN PATCHES. SEA UP TO 4 M. SWELL NE 3 M. =
SCARBOROUGH= E TO NE 5-6, UP TO 7 AT FIRST. ISOL SHOWERS AND TS LATER. SEA 2-3 M, UP TO 4 M AT FIRST. SWELL NE 3 M. =
PARACEL= E TO NE 5-6, UP TO 7 AT FIRST. ISOL SHOWERS AND TS. SEA 2-3 M, UP TO 4 M AT FIRST. SWELL NE 2-3 M. =
TONKIN= E 4-5. FINE. SEA UP TO 2 M. =
DANANG= E 5-6. ISOL SHOWERS AND TS. SEA 2-3 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
    9-day Weather Forecast | UV Index Forecast | Weather Information for Fishermen

    Bulletin issued at 12:30 HKT 12/Dec/2016

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 12:30 p.m. on 12 December 2016

    Warnings:
    Strong winds in all areas.

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

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    East force 5 to 6.
    Moderate to rough seas.

    Nan'ao and Shanwei:
    East to northeast force 5 to 6, occasionally force 7.
    Moderate to rough seas.

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

    Outlook for the next 48 hours
    Easterly winds of force 4 to 5, becoming northeasterly winds of force 6 to 7.

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

    Waglan Island Wind east-northeast force 4

    Shantou Wind east force 2
      Visibility 25 Kilometres

    Huangmaozhou Wind east-northeast force 6

    Macau Wind east force 2
      Visibility 15 Kilometres

    Xisha Wind east-northeast force 3
      Visibility 9 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
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    • WEATHER FORECAST FOR LOCAL AVIATION
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    Weather Forecast for Local Aviation

    Bulletin issued at 09:30 HKT 12/DEC/2016
    (Next update at 17:30 HKT 12/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:  080/10-15
       OFFSHORE:  080/20-25                            21-25
   B.   2000 FT:  100/15-20, OCNL 25                   16
   C.   5000 FT:  150/10                               14
   D.  10000 FT:  260/15-20                            8
   E.  18000 FT:  270/35                               MS3
   F.  24000 FT:  260/35                               MS16
   G.  30000 FT:  290/45                               MS31
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      2900-3200 FT
   I. WEATHER       : 
      MAINLY FINE.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 2000 FT SCT 3000 FT
   K. VISIBILITY    : 9 KM.
   L. 0 DEG. C LEVEL: 17000 FT      10 DEG. C LEVEL(S) : 6300 FT
   M. TURBULENCE    : MOD TO SEV
   N. SEA STATE     : 3.0-4.0 M     SEA TEMPERATURE    : 22 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE, OCCASIONALLY FRESH, EASTERLY 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.

    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 12/Dec/2016 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     21.5 C
Minimum Air Temperature                     19.5 C
Grass Minimum Temperature                   17.7 C
Relative Humidity                        69 - 80 Percent
Rainfall                                      Trace 
Total rainfall since 1st January          3020.2 mm
Against an average of                     2378.4 mm

Other Stations                Min                  Max
King's Park                  18.7 C               22.4 C
Wong Chuk Hang               18.8 C               21.9 C
Ta Kwu Ling                  16.9 C               23.5 C
Lau Fau Shan                 17.1 C               25.2 C
Tai Po                       19.3 C               21.7 C
Sha Tin                      18.7 C               22.5 C
Tuen Mun                     18.2 C               24.4 C
Tseung Kwan O                18.6 C               22.5 C
Sai Kung                     19.4 C               20.9 C
Cheung Chau                  19.0 C               21.7 C
Chek Lap Kok                 20.2 C               24.4 C
Tsing Yi                     19.4 C               22.2 C
Shek Kong                    19.2 C               23.5 C
Tsuen Wan Ho Koon            17.5 C               22.6 C
Tsuen Wan Shing Mun Valley   18.9 C               23.2 C
Hong Kong Park               19.3 C               22.6 C
Shau Kei Wan                 19.0 C               21.1 C
Kowloon City                 18.7 C               22.5 C
Happy Valley                 19.4 C               23.1 C
Wong Tai Sin                 19.2 C               22.4 C
Stanley                      19.4 C               20.7 C
Kwun Tong                    18.8 C               22.3 C
Sham Shui Po                 19.2 C               23.5 C
Kai Tak Runway Park          19.8 C               21.6 C
Yuen Long Park               17.3 C               25.1 C

Duration of sunshine (King's Park):              8.3 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.
Sea surface temperature (Waglan Island):        22.6 C 

Yesterday's (11 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 11 Dec
     2003copy right image | Important notices | Privacy policy Last revision date: <12 Dec 2016> 

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