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Bulletin issued at 23:11 HKT 26/Dec/2016

At 11 p.m. at the Hong Kong Observatory the air temperature was 23 degrees Celsius and the relative humidity 71 per cent.

Please be reminded that:

The Strong Monsoon Signal was issued at 11:10 p.m.
The Fire Danger Warning is Yellow and the fire risk is high.

The air temperatures at other places were:

King's Park 22 degrees;
Wong Chuk Hang 22 degrees;
Ta Kwu Ling 19 degrees;
Lau Fau Shan 21 degrees;
Tai Po 21 degrees;
Sha Tin 22 degrees;
Tuen Mun 21 degrees;
Tseung Kwan O 20 degrees;
Sai Kung 22 degrees;
Cheung Chau 21 degrees;
Chek Lap Kok 20 degrees;
Tsing Yi 23 degrees;
Shek Kong 20 degrees;
Tsuen Wan Ho Koon 21 degrees;
Tsuen Wan Shing Mun Valley 20 degrees;
Hong Kong Park 21 degrees;
Kowloon City 22 degrees;
Happy Valley 20 degrees;
Wong Tai Sin 22 degrees;
Stanley 23 degrees;
Kwun Tong 22 degrees;
Sham Shui Po 21 degrees;
Kai Tak Runway Park 23 degrees;
Yuen Long Park 21 degrees.

Here is the information on Typhoon Nock-ten at 11 p.m.:
Location: 14.3 degrees north, 118.2 degrees east.


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


Climatological Information for 26 Dec

Regional Weather in Hong Kong

Information on Tropical Cyclones

Hong Kong Climatology


Local Weather Forecast
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Bulletin updated at 23:15 HKT 26/Dec/2016

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

A cold front formed over the northern part of Guangdong in the afternoon today. The associated intense northeast monsoon affected the coastal areas of Guangdong gradually tonight. Locally, it was mainly fine and mild. Winds strengthened at night. Under the influence of the intense northeast monsoon, it will become cold and dry over the coastal areas of Guangdong in the next couple of days.

Besides, Super Typhoon Nock-ten weakened into a typhoon gradually today. At 11 p.m., Nock-ten was centred about 300 kilometres west of Manila. It is forecast to move west-northwest at about 20 kilometres per hour across the central part of the South China Sea.

Weather forecast for Hong Kong (Tuesday, 27 Dec 2016)

Cloudy periods at first. It will become appreciably cooler. The minimum temperature will be about 17 degrees in the morning. Mainly fine and dry during the day with a maximum temperature of around 20 degrees. Temperatures will fall further to about 15 degrees at night. Fresh to strong northerly winds.

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


(The above forecast period is valid up to 23:59 HKT tomorrow, 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 21:00 HKT 26/Dec/2016

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

GENERAL SITUATION AT 260900 UTC:
COLD FRONT 21N 109E 24N 116E 30N 125E S 10KT. FOR DETAILS ON TYPHOON NOCK-TEN (1626), PLEASE REFER TO THE 3-HRLY SHIPPING WARNINGS.

MARINE FORECAST FOR 24 HOURS FROM 261300 UTC:

HONG KONG= N TO NE 6-7. FINE, DOWN TO 4000 M IN SOME HAZE AT FIRST. SEA 3-4 M. SWELL NE 2 M. TEMP 17-20 C. =
KWANGTUNG= N TO NE 7-8. CLD. SEA 4-6 M. SWELL E TO NE 2-3 M. =
TAIWAN STRAIT= NE 7-8. CLD. SEA 4-6 M. SWELL NE 2-3 M. =
BASHI= NE 7-8. ISOL SHOWERS. SEA 4-6 M. SWELL E TO NE 3 M. =
PRATAS= N TO NE 7-8. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 4-6 M. SWELL E TO NE 3 M. =
BALINTANG= NE 7-8. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 4-6 M. SWELL E TO NE 3-5 M. =
SCARBOROUGH= NE 7-8, N TO NE 11-12 IN S LATER. DOWN TO 500 M IN FRQ HEAVY SQUALLY SHOWERS AND TS. SEA 4-6 M, 12-14 M IN S LATER. SWELL NE 3-5 M. =
PARACEL= N TO NE 7-8. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 4-6 M. SWELL E TO NE 3-5 M. =
TONKIN= N 7-8. CLD. SEA 4-6 M. SWELL NE UP TO 2 M LATER. =
DANANG= NE 5-6, 7-8 LATER. ISOL SHOWERS. SEA 2-3 M, 4-6 M LATER. SWELL E TO 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.


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    • 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 23:30 HKT 26/Dec/2016

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 11:30 p.m. on 26 December 2016

    Warnings:
    Gale force winds in Nan'ao, Shanwei, south of Hong Kong and Shangchuan Dao. Strong winds in Hong Kong adjacent waters.

    Weather Situation:
    The intense northeast monsoon associated with a cold front is affecting the south China coastal waters gradually.

    At 11 p.m., Typhoon Nock-ten with maximum sustained winds of about 130 kilometres per hour near its centre was located at 14.3 degrees north, 118.2 degrees east. It is forecast to move west-northwest at about 20 kilometres per hour across the central part of the South China Sea.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    North to northeast force 6 to 7.
    Rough seas.

    Nan'ao, 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
    North to northeasterly winds of force 7 to 8.

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

    Waglan Island Wind north-northwest force 4
      Visibility 12 Kilometres

    Shantou Wind east-northeast force 1
      Visibility 13 Kilometres

    Huangmaozhou Wind northwest force 6

    Macau Wind north-northwest force 2
      Visibility 6 Kilometres

    Xisha Wind northeast force 3
      Visibility 17 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
    Traditional Chinese Simplified Chinese

    Weather Forecast for Local Aviation

    Bulletin issued at 17:30 HKT 26/DEC/2016
    (Next update at 01:30 HKT 27/DEC/2016)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     STRONG WINDS AND SEV TURB OFFSHORE.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     A COLD FRONT FORMED OVER NORTHERN GUANGDONG IN
     THE AFTERNOON AND IS MOVING SOUTH GRADUALLY. THE
     ASSOCIATED INTENSE NORTHEAST MONSOON WILL REACH
     THE COASTAL AREAS OF GUANGDONG TONIGHT.
     AT 4 P.M., TYPHOON NOCK-TEN WAS CENTRED NEAR
     14.2 DEGREES NORTH, 119.4 DEGREES EAST.  IT IS
     FORECAST TO MOVE WEST-NORTHWEST AT ABOUT 11
     KNOTS ACROSS THE CENTRAL PART OF THE PHILIPPINES.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1800 TO 0400 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  070/10
                  BEC 360/15-20
       OFFSHORE:  070/10
                  BEC 360/15-20, OCNL 25               24-17
   B.   2000 FT:  70/10-15
                  BEC 020/15-20, OCNL 25               15
   C.   5000 FT:  350/15                               15
   D.  10000 FT:  010/15                               4
   E.  18000 FT:  260/30                               MS3
   F.  24000 FT:  240/40                               MS15
   G.  30000 FT:  240/40                               MS30
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      1300 - 1700, 4300 - 4700 FT.
   I. WEATHER       : 
      MAINLY CLOUDY WITH LOCALIZED HAZE.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 2500 FT.
   K. VISIBILITY    : 7 KM.  TEMPO 4000 M IN HAZE.
   L. 0 DEG. C LEVEL: 17000 FT      10 DEG. C LEVEL(S) : 7600 FT
   M. TURBULENCE    : MOD TO SEV OFFSHORE.
   N. SEA STATE     : 2.0-3.0 M     SEA TEMPERATURE    : 21 DEG
IV.  FURTHER OUTLOOK: 
     FRESH TO STRONG NORTHERLY 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

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    South China Coastal Waters |  Marine Forecast
    Severe Weather Information Centre

    Bulletin issued at 21:30 HKT 26/Dec/2016


    Tropical Cyclone Warning

    At 261200 UTC, Typhoon Nock-ten (1626) with central pressure 965 hectopascals was centred within 30 nautical miles of one four point three degrees north (14.3 N) one one eight point five degrees east (118.5 E) and is forecast to move west-northwest at about 10 knots for the next 24 hours.

    Maximum winds near the centre are estimated to be 70 knots.

    Radius of over 33 knot winds 150 nautical miles over northern semicircle, 120 nautical miles elsewhere.
    Radius of over 47 knot winds 90 nautical miles.
    Radius of over 63 knot winds 60 nautical miles.
    Radius of over 2 metre waves 180 nautical miles.

    Forecast position and intensity at 271200 UTC
    One four point nine degrees north (14.9 N)
    One one five point six degrees east (115.6 E)
    Maximum winds 45 knots.

    Forecast position and intensity at 281200 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 26/Dec/2016 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     20.3 C
Minimum Air Temperature                     18.4 C
Grass Minimum Temperature                   18.4 C
Relative Humidity                        78 - 87 Percent
Rainfall                                      Trace 
Total rainfall since 1st January          3026.8 mm
Against an average of                     2389.4 mm

Other Stations                Min                  Max
King's Park                  17.8 C               20.4 C
Wong Chuk Hang               17.7 C               20.9 C
Ta Kwu Ling                  17.0 C               20.8 C
Lau Fau Shan                 17.1 C               23.2 C
Tai Po                       18.2 C               20.4 C
Sha Tin                      18.0 C               20.3 C
Tuen Mun                     18.1 C               22.6 C
Tseung Kwan O                18.2 C               20.8 C
Sai Kung                     18.9 C               20.0 C
Cheung Chau                  17.9 C               21.1 C
Chek Lap Kok                 18.8 C               23.1 C
Tsing Yi                     18.6 C               21.2 C
Shek Kong                    18.4 C               22.0 C
Tsuen Wan Ho Koon            17.2 C               20.4 C
Tsuen Wan Shing Mun Valley   18.0 C               21.3 C
Hong Kong Park               17.9 C               20.3 C
Shau Kei Wan                 17.9 C               19.6 C
Kowloon City                 17.7 C               21.3 C
Happy Valley                 17.9 C               20.7 C
Wong Tai Sin                 18.1 C               21.2 C
Stanley                      17.9 C               20.3 C
Kwun Tong                    17.6 C               20.0 C
Sham Shui Po                 18.4 C               22.8 C
Kai Tak Runway Park          18.7 C               20.5 C
Yuen Long Park               17.7 C               22.3 C

Duration of sunshine (King's Park):              1.3 H
The mean UV index recorded at King's Park yesterday was 1,
the UV intensity was Low.
The maximum UV index for yesterday was 3.
Sea surface temperature (Waglan Island):        21.2 C 

Yesterday's (25 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 25 Dec
     2003copy right image | Important notices | Privacy policy Last revision date: <26 Dec 2016> 

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