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Weather Information for South China Coastal Waters

Bulletin issued at 15:02 HKT 27/Dec/2016

At 3 p.m. at the Hong Kong Observatory the air temperature was 18 degrees Celsius and the relative humidity 50 per cent.
During the past hour the mean UV Index recorded at King's Park was 3. The intensity of UV radiation was moderate.

Please be reminded that:

The Strong Monsoon Signal has been issued.
The Fire Danger Warning is Red and the fire risk is extreme.

The air temperatures at other places were:

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

Here is the information on Severe Tropical Storm Nock-ten at noon:
Location: 14.9 degrees north, 116.1 degrees east.


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


Climatological Information for 27 Dec

Regional Weather in Hong Kong

Information on Tropical Cyclones

Hong Kong Climatology


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

Current Weather | Regional Temperature Forecast in HK |  9-day Weather Forecast
UV Index Forecast |  Weather Information for South China Coastal Waters

Bulletin updated at 14:45 HKT 27/Dec/2016

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

An intense northeast monsoon is affecting the coastal areas of Guangdong.

At noon, Severe Tropical Storm Nock-ten was centred about 530 kilometres north-northeast of Nansha Dao. It is forecast to move southwest or west-southwest at about 14 kilometres per hour across the central part of the South China Sea and weaken gradually.

Weather forecast for this afternoon and tonight

Fine and dry. It will become appreciably cooler. Temperatures will fall to about 15 degrees at night. Fresh to strong northerly winds.

Outlook : Cold tomorrow morning. Still rather cool in the following couple of days.


(The above forecast period is valid up to 23:59 HKT today, 27/12/2016; 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 27/Dec/2016

HURRICANE WARNING AREA: SCARBOROUGH.
GALE WARNING AREAS: HONG KONG, KWANGTUNG, TAIWAN STRAIT, BASHI, PRATAS, BALINTANG, PARACEL, TONKIN AND DANANG.

GENERAL SITUATION AT 262100 UTC:
COLD FRONT 18N 111E 24N 121E 25N 125E S SLOWLY. FOR DETAILS ON TYPHOON NOCK-TEN (1626), PLEASE REFER TO THE 3-HRLY SHIPPING WARNINGS.

MARINE FORECAST FOR 24 HOURS FROM 270100 UTC:

HONG KONG= N TO NE 6-7, OCNL 8. FINE. SEA 3-5 M. SWELL NE 2 M. TEMP 20-12 C. =
KWANGTUNG= N TO NE 7-8. CLD. SEA 4-6 M. SWELL E TO NE 2-3 M. =
TAIWAN STRAIT= NE 7-8, OCNL 9. CLD. SEA 5-7 M. SWELL NE 3-4 M. =
BASHI= NE 8-9. ISOL SHOWERS. SEA 6-8 M. SWELL NE 3-4 M. =
PRATAS= N TO NE 7-8. ISOL SHOWERS AND TS. SEA 4-6 M. SWELL NE 3 M. =
BALINTANG= NE 8-9. ISOL SHOWERS AND TS. SEA 6-8 M. SWELL NE 3-4 M. =
SCARBOROUGH= N TO NE 8-9, UP TO 12 IN S. DOWN TO 500 M IN FRQ SQUALLY HEAVY SHOWERS AND TS. SEA 6-8 M, UP TO 14 M IN S. SWELL NE 3-5 M. =
PARACEL= N TO NE 7-8, UP TO 9 IN S. DOWN TO 500 M IN FRQ SQUALLY HEAVY SHOWERS AND TS IN S. SEA 4-6 M. SWELL NE 3-4 M. =
TONKIN= N TO NE 7-8. CLD. SEA 4-6 M. SWELL NE UP TO 2 M. =
DANANG= N TO NE 7-8. ISOL SHOWERS. SEA 4-6 M. SWELL NE 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 27/Dec/2016

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 12:30 p.m. on 27 December 2016

    Warnings:
    Gale force winds in all areas.

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

    At noon, Severe Tropical Storm Nock-ten with maximum sustained winds of about 110 kilometres per hour near its centre was located near 14.9 degrees north, 116.1 degrees east. It is forecast to move southwest or west-southwest at about 14 kilometres per hour across the central part of the South China Sea and weaken gradually.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    North to northeast force 6 to 7, occasionally force 8.
    Rough to very rough seas.

    Nan'ao:
    North to northeast force 7 to 8, occasionally force 9.
    Very rough seas.

    Shanwei, South of Hong Kong and Shangchuan Dao:
    North to northeast force 7 to 8.
    Rough to very 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 north force 6
      Visibility 35 Kilometres

    Dongsha Wind north-northeast force 6
      Visibility 10 Kilometres

    Huangmaozhou Wind north-northwest force 6

    Macau Wind north force 4
      Visibility 16 Kilometres

    Xisha Wind north-northeast force 5
      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 09:00 HKT 27/DEC/2016
    (Next update at 17:30 HKT 27/DEC/2016)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     GALE FORCE WINDS.
     SEV TURB AND SEV GUSTS.

II.  SYNOPSIS OF THE WEATHER SITUATION :
     AN INTENSE NORTHEAST MONSOON IS AFFECTING THE
     COASTAL AREAS OF GUANGDONG.
     TYPHOON NOCK-TEN HAS WEAKENED INTO A SEVERE
     TROPICAL STORM. AT 9 A.M., NOCK-TEN WAS CENTRED
     NEAR 14.9 DEGREES NORTH, 116.2 DEGREES EAST.  IT
     IS FORECAST TO MOVE WEST OR WEST-SOUTHWEST AT
     ABOUT 8 KNOTS ACROSS THE CENTRAL PART OF THE
     SOUTH CHINA SEA AND WEAKEN GRADUALLY.

III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1000 TO 2000 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  360/15-20, OCNL 25 AT FIRST
       OFFSHORE:  360/25-30, OCNL 35 AT FIRST          15-20
   B.   2000 FT:  020/30-35, OCNL 40 AT FIRST          10
   C.   5000 FT:  020/20                               13
   D.  10000 FT:  050/10 BEC 250/10                    7
   E.  18000 FT:  230/25                               MS3
   F.  24000 FT:  220/35                               MS15
   G.  30000 FT:  230/35                               MS28
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      2300 - 4800 FT.
   I. WEATHER       : 
      MAINLY FINE.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 3000 FT.
   K. VISIBILITY    : 10 KM.
   L. 0 DEG. C LEVEL: 16500 FT
      10 DEG. C LEVEL(S) : 2000, 7400 FT
   M. TURBULENCE    : MOD TO SEV.
   N. SEA STATE     : 3.0-4.5 M     SEA TEMPERATURE    : 20 DEG

IV.  FURTHER OUTLOOK: 
     MODERATE TO FRESH NORTHERLY WINDS, STRONG
     OFFSHORE.  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 12:52 HKT on 27 Dec 16

    VHHK SIGMET 1 VALID 270217/270500 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N1818 E11518 - N1642 E11400 - N1706 E11336 - N1818 E11354 - N1818 E11518 TOP FL450 MOV W 08KT NC= VHHK SIGMET 2 VALID 270500/270900 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N1924 E11612 - N1642 E11400 - N1754 E11254 - N1924 E11348 - N1924 E11612 TOP FL450 MOV W 08KT 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

    Tropical Cyclone Warning |  Track and Positions of Tropical Cyclones
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    Severe Weather Information Centre

    Bulletin issued at 15:30 HKT 27/Dec/2016


    Tropical Cyclone Warning

    At 270600 UTC, Severe Tropical Storm Nock-ten (1626) with central pressure 984 hectopascals was centred within 60 nautical miles of one four point seven degrees north (14.7 N) one one five point nine degrees east (115.9 E) and is forecast to move southwest at about 8 knots for the next 24 hours.

    Maximum winds near the centre are estimated to be 50 knots.

    Radius of over 33 knot winds 90 nautical miles over northern semicircle, 60 nautical miles elsewhere.
    Radius of over 47 knot winds 30 nautical miles.
    Radius of over 2 metre waves 120 nautical miles.

    Forecast position and intensity at 280600 UTC
    One two point zero degrees north (12.0 N)
    One one two point eight degrees east (112.8 E)
    Maximum winds 30 knots.

    Forecast position and intensity at 290600 UTC
    Dissipated over sea.



    The Hong Kong Observatory's tropical cyclone warnings for shipping are issued about one and a half hours after the time of observation. They incorporate additional information derived from surface and upper-air data and may therefore be slightly different from the real-time satellite or radar-based positions given in the hourly bulletins for public.

    While the forecast positions and track indicate the most likely future path of the tropical cyclone, they may deviate from the actual path taken by the storm.

    Tropical Cyclone Track
    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 27/Dec/2016 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     23.7 C
Minimum Air Temperature                     19.5 C
Grass Minimum Temperature                   18.1 C
Relative Humidity                        70 - 89 Percent
Rainfall                                       0 mm 
Total rainfall since 1st January          3026.8 mm
Against an average of                     2390.8 mm

Other Stations                Min                  Max
King's Park                  18.7 C               25.0 C
Wong Chuk Hang               19.0 C               24.1 C
Ta Kwu Ling                  17.9 C               26.1 C
Lau Fau Shan                 17.4 C               24.4 C
Tai Po                       18.7 C               24.7 C
Sha Tin                      18.9 C               25.3 C
Tuen Mun                     18.7 C               26.3 C
Tseung Kwan O                18.8 C               26.2 C
Sai Kung                     19.2 C               22.4 C
Cheung Chau                  18.8 C               23.3 C
Chek Lap Kok                 18.4 C               24.8 C
Tsing Yi                     19.0 C               25.4 C
Shek Kong                    18.1 C               25.9 C
Tsuen Wan Ho Koon            16.7 C               24.1 C
Tsuen Wan Shing Mun Valley   18.0 C               26.6 C
Hong Kong Park               18.6 C               25.7 C
Shau Kei Wan                 18.9 C               24.5 C
Kowloon City                 18.1 C               26.7 C
Happy Valley                 18.6 C               26.3 C
Wong Tai Sin                 18.5 C               26.6 C
Stanley                      19.1 C               23.1 C
Kwun Tong                    19.1 C               26.6 C
Sham Shui Po                 18.8 C               26.0 C
Kai Tak Runway Park          19.8 C               25.5 C
Yuen Long Park               17.8 C               26.8 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 6.
Sea surface temperature (Waglan Island):        21.3 C 

Yesterday's (26 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 26 Dec
     2003copy right image | Important notices | Privacy policy Last revision date: <27 Dec 2016> 

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