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Bulletin issued at 10:02 HKT 11/Dec/2016

At 10 a.m. at the Hong Kong Observatory the air temperature was 20 degrees Celsius and the relative humidity 74 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 21 degrees;
Wong Chuk Hang 21 degrees;
Ta Kwu Ling 21 degrees;
Lau Fau Shan 21 degrees;
Tai Po 21 degrees;
Sha Tin 21 degrees;
Tuen Mun 22 degrees;
Tseung Kwan O 21 degrees;
Sai Kung 20 degrees;
Cheung Chau 21 degrees;
Chek Lap Kok 23 degrees;
Tsing Yi 21 degrees;
Shek Kong 21 degrees;
Tsuen Wan Ho Koon 20 degrees;
Tsuen Wan Shing Mun Valley 22 degrees;
Hong Kong Park 20 degrees;
Shau Kei Wan 20 degrees;
Kowloon City 20 degrees;
Happy Valley 21 degrees;
Wong Tai Sin 21 degrees;
Stanley 20 degrees;
Kwun Tong 20 degrees;
Sham Shui Po 23 degrees;
Kai Tak Runway Park 21 degrees;
Yuen Long Park 23 degrees.


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


Climatological Information for 11 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 09:45 HKT 11/Dec/2016

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

The northeast monsoon is affecting the coastal areas of Guangdong.

Weather forecast for today

It will be fine. Dry in the afternoon. Moderate to fresh easterly winds.

Outlook : Warm during the day in the next couple of days. Becoming cool significantly midweek this week.


(The above forecast period is valid up to 23:59 HKT today, 11/12/2016; Regular update at : around 45 minutes past each hour, 16:15 HKT and 23:15 HKT)

Information on Tropical Cyclones

Marine Weather Information and Forecast

Weather Information for Aviation

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Weather Information in China

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MARINE FORECAST
Traditional Chinese Simplified Chinese

Marine Forecast

Weather Information for the Marine Community

Bulletin issued at 09:00 HKT 11/Dec/2016

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

GENERAL SITUATION AT 102100 UTC:
THE NORTHEAST MONSOON IS AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 110100 UTC:

HONG KONG= E 5-6, OCNL 7 AT FIRST. FINE. SEA UP TO 4 M. SWELL E 2 M. TEMP 23-19 C. =
KWANGTUNG= E TO NE 5-6, UP TO 7 IN E. FINE. SEA 2-3 M, UP TO 4 M IN E. SWELL NE 2-3 M. =
TAIWAN STRAIT= NE 6-7, OCNL 8 AT FIRST. CLD. SEA 3-4 M, UP TO 6 M AT FIRST. SWELL NE 2-3 M. =
BASHI= E TO NE 6-7, OCNL 8 AT FIRST. RAIN PATCHES. SEA 3-4 M, UP TO 6 M AT FIRST. SWELL NE 2-3 M. =
PRATAS= E TO NE 6-7, OCNL 8 AT FIRST. CLD. SEA UP TO 6 M. SWELL NE 2-3 M. =
BALINTANG= E TO NE 6-7, OCNL 8. RAIN PATCHES. SEA UP TO 6 M. SWELL NE 3 M. =
SCARBOROUGH= NE 6-7, OCNL 8. ISOL SHOWERS AND TS. SEA UP TO 6 M. SWELL NE 3 M. =
PARACEL= NE 6-7. ISOL SHOWERS AND TS. SEA 3-4 M. SWELL NE 2-3 M. =
TONKIN= NE 5-6. FINE. SEA 2-3 M. =
DANANG= NE 5-6, OCNL 7 AT FIRST. RAIN PATCHES. SEA UP TO 4 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 09:30 HKT 11/Dec/2016

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 9:30 a.m. on 11 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, occasionally force 7 at first.
    Moderate to rough seas.

    Nan'ao, Shanwei and South of Hong Kong:
    East to northeast force 6 to 7.
    Rough seas.

    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, up to force 7 at first.

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

    Waglan Island Wind east-northeast force 5
      Visibility 10 Kilometres

    Shantou Wind east force 2
      Visibility 9 Kilometres

    Dongsha Wind northeast force 4
      Visibility 10 Kilometres

    Huangmaozhou Wind east-northeast force 7

    Macau Wind east force 3
      Visibility 7 Kilometres

    Xisha Wind east-northeast force 4
      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
  • Tidal Information

    • WEATHER FORECAST FOR LOCAL AVIATION
    Traditional Chinese Simplified Chinese

    Weather Forecast for Local Aviation

    Bulletin issued at 09:30 HKT 11/DEC/2016
    (Next update at 17:30 HKT 11/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:  080/15-20, OCNL 25                   16
   C.   5000 FT:  130/10                               13
   D.  10000 FT:  250/10                               8
   E.  18000 FT:  280/25                               MS4
   F.  24000 FT:  300/40                               MS16
   G.  30000 FT:  300/50                               MS32
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      2600-3000 ; 3300-3800 FT
   I. WEATHER       : 
      FINE. LOCALIZED HAZE.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 2500 FT.
   K. VISIBILITY    : 7 KM. TEMPO 4000 M IN HAZE.
   L. 0 DEG. C LEVEL: 15000 FT      10 DEG. C LEVEL(S) : 6400 FT
   M. TURBULENCE    : MOD TO SEV
   N. SEA STATE     : 3.0-4.0 M     SEA TEMPERATURE    : 22 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE TO FRESH EASTERLY WINDS, OCCASIONALLY
     STRONG OFFSHORE. CLOUDY PERIODS.=

    ===================================================================
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 11/Dec/2016 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     23.1 C
Minimum Air Temperature                     18.3 C
Grass Minimum Temperature                   16.5 C
Relative Humidity                        59 - 81 Percent
Rainfall                                       0 mm 
Total rainfall since 1st January          3020.2 mm
Against an average of                     2377.6 mm

Other Stations                Min                  Max
King's Park                  17.6 C               25.1 C
Wong Chuk Hang               16.9 C               25.3 C
Ta Kwu Ling                  12.1 C               26.5 C
Lau Fau Shan                 15.8 C               24.2 C
Tai Po                       15.7 C               24.3 C
Sha Tin                      15.9 C               24.8 C
Tuen Mun                     16.6 C               26.6 C
Tseung Kwan O                15.9 C               25.2 C
Sai Kung                     17.3 C               23.0 C
Cheung Chau                  18.4 C               23.0 C
Chek Lap Kok                 18.9 C               24.8 C
Tsing Yi                     16.6 C               25.8 C
Shek Kong                    14.9 C               26.1 C
Tsuen Wan Ho Koon            15.5 C               25.7 C
Tsuen Wan Shing Mun Valley   15.6 C               26.7 C
Hong Kong Park               17.6 C               24.9 C
Shau Kei Wan                 17.4 C               23.3 C
Kowloon City                 17.5 C               26.1 C
Happy Valley                 17.8 C               25.8 C
Wong Tai Sin                 16.8 C               26.8 C
Stanley                      18.5 C               22.7 C
Kwun Tong                    17.5 C               24.5 C
Sham Shui Po                 17.1 C               25.5 C
Kai Tak Runway Park          18.6 C               23.9 C
Yuen Long Park               14.8 C               26.2 C

Duration of sunshine (King's Park):              8.8 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):        22.5 C 

Yesterday's (10 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 10 Dec
     2003copy right image | Important notices | Privacy policy Last revision date: <11 Dec 2016> 

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