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Bulletin issued at 12:02 HKT 24/Dec/2016

At noon at the Hong Kong Observatory the air temperature was 18 degrees Celsius and the relative humidity 68 per cent.
During the past hour the mean UV Index recorded at King's Park was 1. The intensity of UV radiation was low.

The air temperatures at other places were:

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

Between 10:45 and 11:45 a.m., the rainfall recorded in various regions were:

North District 0 to 1 mm.

3.7 millimetres of rainfall were 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 24 Dec

Regional Weather in Hong Kong

Information on Tropical Cyclones

Hong Kong Climatology


Local Weather Forecast
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Bulletin updated at 11:45 HKT 24/Dec/2016

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

The northeast monsoon is affecting the coast of Guangdong.

At noon, Severe Typhoon Nock-ten was centred about 820 kilometres east of Manila. It is forecast to move west at about 14 kilometres per hour in the general direction of the central part of the Philippines.

Weather forecast for this afternoon and tonight

Cloudy with one or two rain patches. Fresh easterly winds, occasionally strong offshore.

Outlook : Windy in the morning of Christmas Day. Mild on Boxing Day. Becoming cold in the following couple of days.


(The above forecast period is valid up to 23:59 HKT today, 24/12/2016; 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 24/Dec/2016

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

GENERAL SITUATION AT 232100 UTC:
AN INTENSE NORTHEAST MONSOON IS GENERALLY AFFECTING THE FORECAST AREAS. TYPHOON NOCK-TEN (1626) 960HPA 13N 129E W OR WNW 8KT INTSF.

MARINE FORECAST FOR 24 HOURS FROM 240100 UTC:

HONG KONG= E 5-6, OCNL 7. RAIN PATCHES. SEA 3 M. SWELL NE UP TO 2 M. TEMP 20-17 C. =
KWANGTUNG= E TO NE 6-7, OCNL 8 IN E. RAIN PATCHES. SEA 3-4 M, UP TO 6 M IN E. SWELL E TO NE 2-3 M. =
TAIWAN STRAIT= NE 7-8. CLD. SEA 4-6 M. SWELL NE 3 M. =
BASHI= E TO NE 7-8. CLD. SEA 4-6 M. SWELL E TO NE 3 M. =
PRATAS= E 7-8. CLD. SEA 4-6 M. SWELL E TO NE 3 M. =
BALINTANG= E TO NE 7-8. CLD. SEA 4-6 M. SWELL E TO NE 3 M. =
SCARBOROUGH= NE 7-8. FINE. SEA 4-6 M. SWELL NE 2-3 M. =
PARACEL= NE 5-6, OCNL 7. RAIN PATCHES. SEA 3 M. SWELL E TO NE 2-3 M. =
TONKIN= E TO NE 4-5. CLD. SEA UP TO 2 M. =
DANANG= NE 4-5, OCNL 6. RAIN PATCHES. SEA 2 M. 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.


  • 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 24/Dec/2016

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 12:30 p.m. on 24 December 2016

    Warnings:
    Strong winds in all areas.

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

    At noon, Severe Typhoon Nock-ten with maximum sustained winds of about 175 kilometres per hour near its centre was located at 13.1 degrees north, 128.4 degrees east, it is forecast to move west at about 14 kilometres per hour in the general direction of the central part of the Philippines.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    East to northeast force 5 to 6, occasionally force 7.
    A few rain patches.
    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.
    Moderate to rough seas.

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

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

    Waglan Island Wind east-northeast force 5
      Visibility 11 Kilometres

    Shantou Wind east-northeast force 2
      Visibility 21 Kilometres

    Huangmaozhou Wind east-northeast force 6

    Macau Wind north-northeast force 2
      Visibility 6 Kilometres

    Xisha Wind east force 4
      Visibility 11 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 24/DEC/2016
    (Next update at 17:30 HKT 24/DEC/2016)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     STRONG WINDS AND SEV TURB.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     A STRONG NORTHEAST MONSOON IS AFFECTING THE
     COAST OF GUANGDONG.

III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1000 TO 2000 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  080/15
       OFFSHORE:  080/20-25, OCNL 30 AT FIRST          17-21
   B.   2000 FT:  100/20-25, OCNL 30                   14
   C.   5000 FT:  160/25                               13
   D.  10000 FT:  250/20                               5
   E.  18000 FT:  270/35                               MS3
   F.  24000 FT:  270/40                               MS15
   G.  30000 FT:  290/50                               MS29
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      2200 - 2600, 3100 - 4000 FT.
   I. WEATHER       : 
      CLOUDY WITH A FEW RAIN PATCHES AND LOCALIZED
      MIST.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1500 FT  SCT 3000 FT  BKN 6000 FT.
   K. VISIBILITY    : 7 KM.  TEMPO 4000 M IN RAIN/MIST.
   L. 0 DEG. C LEVEL: 15000 FT      10 DEG. C LEVEL(S) : 7200 FT
   M. TURBULENCE    : MOD TO SEV.
   N. SEA STATE     : 2.0-3.5 M     SEA TEMPERATURE    : 22 DEG

IV.  FURTHER OUTLOOK: 
     MODERATE TO FRESH EASTERLY WINDS, OCCASIONALLY
     STRONG OFFSHORE.  MAINLY CLOUDY WITH A FEW RAIN
     PATCHES.=

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

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

Hong Kong Observatory
Maximum Air Temperature                     21.9 C
Minimum Air Temperature                     19.1 C
Grass Minimum Temperature                   18.1 C
Relative Humidity                        66 - 80 Percent
Rainfall                                      Trace 
Total rainfall since 1st January          3023.1 mm
Against an average of                     2387.1 mm

Other Stations                Min                  Max
King's Park                  18.3 C               23.2 C
Wong Chuk Hang               18.7 C               23.3 C
Ta Kwu Ling                  15.7 C               23.1 C
Lau Fau Shan                 16.1 C               22.3 C
Tai Po                       16.4 C               21.4 C
Sha Tin                      17.2 C               21.7 C
Tuen Mun                     17.0 C               24.2 C
Tseung Kwan O                16.6 C               23.4 C
Sai Kung                     17.2 C               21.4 C
Cheung Chau                  17.2 C               20.9 C
Chek Lap Kok                 17.6 C               22.4 C
Tsing Yi                     18.6 C               23.8 C
Shek Kong                    16.4 C               23.3 C
Tsuen Wan Ho Koon            17.0 C               23.7 C
Tsuen Wan Shing Mun Valley   17.7 C               24.0 C
Hong Kong Park               18.4 C               22.9 C
Shau Kei Wan                 17.7 C               22.0 C
Kowloon City                 17.5 C               24.0 C
Happy Valley                 18.7 C               23.0 C
Wong Tai Sin                 17.8 C               24.7 C
Stanley                      18.5 C               21.6 C
Kwun Tong                    17.8 C               22.5 C
Sham Shui Po                 18.0 C               24.1 C
Kai Tak Runway Park          19.1 C               22.3 C
Yuen Long Park               16.5 C               23.3 C

Duration of sunshine (King's Park):              4.1 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):        22.0 C 

Yesterday's (23 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 23 Dec
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