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Bulletin issued at 11:02 HKT 17/Dec/2016

At 11 a.m. at the Hong Kong Observatory the air temperature was 17 degrees Celsius and the relative humidity 59 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 17 degrees;
Wong Chuk Hang 17 degrees;
Ta Kwu Ling 16 degrees;
Lau Fau Shan 16 degrees;
Tai Po 17 degrees;
Sha Tin 16 degrees;
Tuen Mun 18 degrees;
Tseung Kwan O 18 degrees;
Sai Kung 16 degrees;
Cheung Chau 17 degrees;
Chek Lap Kok 17 degrees;
Tsing Yi 17 degrees;
Shek Kong 17 degrees;
Tsuen Wan Ho Koon 17 degrees;
Tsuen Wan Shing Mun Valley 18 degrees;
Hong Kong Park 17 degrees;
Shau Kei Wan 18 degrees;
Kowloon City 17 degrees;
Happy Valley 17 degrees;
Wong Tai Sin 18 degrees;
Stanley 17 degrees;
Kwun Tong 17 degrees;
Sham Shui Po 18 degrees;
Kai Tak Runway Park 17 degrees;
Yuen Long Park 17 degrees.


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


Climatological Information for 17 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 10:45 HKT 17/Dec/2016

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

The northeast monsoon is maintaining cool and dry weather over the coast of Guangdong.

Weather forecast for today

Dry with sunny periods. It will be cool in the morning. Mainly cloudy later. Moderate to fresh northeasterly winds.

Outlook : Temperatures rising gradually in the next few days. Rain patches midweek next week.


(The above forecast period is valid up to 23:59 HKT today, 17/12/2016; 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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MARINE FORECAST
Traditional Chinese Simplified Chinese

Marine Forecast

Weather Information for the Marine Community

Bulletin issued at 09:00 HKT 17/Dec/2016

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

GENERAL SITUATION AT 162100 UTC:
THE NORTHEAST MONSOON IS AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 170100 UTC:

HONG KONG= E TO NE 5-6. CLD. SEA 3 M. SWELL NE UP TO 2 M. TEMP 18-18 C. =
KWANGTUNG= E TO NE 6-7. CLD. SEA 3-4 M. SWELL NE 2-3 M. =
TAIWAN STRAIT= NE 6-7. CLD. SEA 3-4 M. SWELL NE 3 M. =
BASHI= E TO NE 6-7, UP TO 8 AT FIRST. RAIN PATCHES. SEA 3-4 M, UP TO 6 M AT FIRST. SWELL NE 3 M. =
PRATAS= E TO NE 6-7, UP TO 8 AT FIRST. RAIN PATCHES. SEA 3-4 M, UP TO 6 M AT FIRST. SWELL NE 3 M. =
BALINTANG= E TO NE 6-7, UP TO 8 AT FIRST. RAIN PATCHES. SEA 3-4 M, UP TO 6 M AT FIRST. SWELL NE 3 M. =
SCARBOROUGH= NE 6-7, UP TO 8 AT FIRST. ISOL SHOWERS. SEA 3-4 M, UP TO 6 M AT FIRST. SWELL NE 3 M. =
PARACEL= NE 6-7. ISOL SHOWERS. SEA 3-4 M. SWELL NE 3 M. =
TONKIN= NE 5-6. RAIN PATCHES. SEA 2-3 M. SWELL NE 2 M. =
DANANG= NE 5-6, OCNL 7. ISOL SHOWERS. SEA 3-4 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 17/Dec/2016

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 9:30 a.m. on 17 December 2016

    Warnings:
    Gale force winds in Nan'ao and Shanwei. Strong winds in Hong Kong adjacent waters, south of Hong Kong 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:
    East to northeast force 5 to 6.
    Moderate to rough seas.

    Nan'ao and Shanwei:
    East to northeast force 6 to 7, occasionally force 8 at first.
    Rough to very rough seas.

    South of Hong Kong and Shangchuan Dao:
    East to northeast force 6 to 7.
    Rough seas.

    Outlook for the next 48 hours
    East to northeasterly winds of force 5 to 6, occasionally force 7.

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

    Waglan Island Wind northeast force 5
      Visibility 13 Kilometres

    Shantou Wind northeast force 1
      Visibility 17 Kilometres

    Huangmaozhou Wind northeast force 5

    Macau Wind north force 3
      Visibility 10 Kilometres

    Xisha Wind northeast force 4
      Visibility 12 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 17/DEC/2016
    (Next update at 17:30 HKT 17/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:  060/10-15
       OFFSHORE:  040/15-20, OCNL 25                   14-19
   B.   2000 FT:  080/15-20, OCNL 25                   12
   C.   5000 FT:  150/10-15                            10
   D.  10000 FT:  270/20                               4
   E.  18000 FT:  270/35                               MS9
   F.  24000 FT:  250/65                               MS18
   G.  30000 FT:  250/75                               MS31
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      3700-4700 FT.
   I. WEATHER       : 
      MAINLY FINE AT FIRST. BECOMING CLOUDIER LATER.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 4000 FT.
   K. VISIBILITY    : 10 KM.
   L. 0 DEG. C LEVEL: 15000 FT      10 DEG. C LEVEL(S) : 5000, 6800 FT
   M. TURBULENCE    : MOD TO SEV
   N. SEA STATE     : 2.0-2.5 M     SEA TEMPERATURE    : 21 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE TO FRESH NORTHEASTERLY WINDS,
     OCCASIONALLY STRONG OFFSHORE AND ON HIGH GROUND.
     MAINLY CLOUDY.=

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

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

Hong Kong Observatory
Maximum Air Temperature                     17.1 C
Minimum Air Temperature                     13.2 C
Grass Minimum Temperature                   13.2 C
Relative Humidity                        53 - 66 Percent
Rainfall                                       0 mm 
Total rainfall since 1st January          3020.2 mm
Against an average of                     2383.7 mm

Other Stations                Min                  Max
King's Park                  12.0 C               17.8 C
Wong Chuk Hang               12.9 C               17.9 C
Ta Kwu Ling                   8.2 C               18.2 C
Lau Fau Shan                 10.7 C               16.8 C
Tai Po                       10.8 C               16.8 C
Sha Tin                      11.1 C               16.9 C
Tuen Mun                     11.8 C               18.7 C
Tseung Kwan O                11.5 C               18.7 C
Sai Kung                     11.6 C               16.2 C
Chek Lap Kok                 12.5 C               18.8 C
Tsing Yi                     12.6 C               17.8 C
Shek Kong                    10.1 C               18.2 C
Tsuen Wan Ho Koon            10.3 C               17.8 C
Tsuen Wan Shing Mun Valley   10.6 C               18.1 C
Hong Kong Park               13.2 C               17.8 C
Shau Kei Wan                 12.0 C               17.5 C
Kowloon City                 11.4 C               18.1 C
Happy Valley                 13.5 C               18.2 C
Wong Tai Sin                 12.0 C               18.9 C
Stanley                      13.4 C               17.3 C
Kwun Tong                    11.6 C               17.3 C
Sham Shui Po                 12.2 C               18.3 C
Kai Tak Runway Park          12.2 C               17.7 C
Yuen Long Park               10.7 C               18.9 C

Duration of sunshine (King's Park):              9.3 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 5.
Sea surface temperature (Waglan Island):        22.1 C 

Yesterday's (16 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                          0.10
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 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 16 Dec
     2003copy right image | Important notices | Privacy policy Last revision date: <17 Dec 2016> 

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