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

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9-day Weather Forecast | UV Index Forecast
Weather Information for South China Coastal Waters

Bulletin issued at 13:02 HKT 22/Dec/2016

At 1 p.m. at the Hong Kong Observatory the air temperature was 25 degrees Celsius and the relative humidity 65 per cent.
During the past hour the mean UV Index recorded at King's Park was 5. The intensity of UV radiation was moderate.

The air temperatures at other places were:

King's Park 25 degrees;
Wong Chuk Hang 26 degrees;
Ta Kwu Ling 25 degrees;
Lau Fau Shan 24 degrees;
Tai Po 25 degrees;
Sha Tin 25 degrees;
Tuen Mun 26 degrees;
Tseung Kwan O 26 degrees;
Sai Kung 24 degrees;
Cheung Chau 23 degrees;
Chek Lap Kok 22 degrees;
Tsing Yi 26 degrees;
Shek Kong 25 degrees;
Tsuen Wan Ho Koon 24 degrees;
Tsuen Wan Shing Mun Valley 27 degrees;
Hong Kong Park 27 degrees;
Shau Kei Wan 27 degrees;
Kowloon City 26 degrees;
Happy Valley 25 degrees;
Wong Tai Sin 26 degrees;
Stanley 25 degrees;
Kwun Tong 26 degrees;
Sham Shui Po 27 degrees;
Kai Tak Runway Park 26 degrees;
Yuen Long Park 27 degrees.


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


Climatological Information for 22 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

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Bulletin updated at 12:45 HKT 22/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, Tropical Storm Nock-ten was centred about 60 kilometres southeast of Yap. It is forecast to move west-northwest at about 30 kilometres per hour in the general direction of the central part of the Philippines.

Weather forecast for this afternoon and tonight

Fine. Dry in the afternoon. It will be cooler tonight. Moderate northerly winds, fresh offshore.

Outlook : Cool in the morning tomorrow. Cloudier and windier on Christmas Eve and Christmas Day. Mild with sunny periods on Monday.


(The above forecast period is valid up to 23:59 HKT today, 22/12/2016; 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 22/Dec/2016

GALE WARNING AREAS: TAIWAN STRAIT, BASHI AND BALINTANG.

GENERAL SITUATION AT 212100 UTC:
COLD FRONT 21N 109E 25N 117E 28N 120E S 10KT.

MARINE FORECAST FOR 24 HOURS FROM 220100 UTC:

HONG KONG= N TO NE 5-6. DOWN TO 4000 M IN MIST OR RAIN PATCHES AT FIRST. SEA 2-3 M. TEMP 24-16 C. =
KWANGTUNG= N TO NE 6-7. DOWN TO 4000 M IN MIST OR RAIN PATCHES AT FIRST. SEA 3-4 M. SWELL NE 2 M. =
TAIWAN STRAIT= NE 5-6, 7-8 LATER. DOWN TO 2000 M IN MIST OR RAIN PATCHES. SEA 2-3 M, 4-6 M LATER. SWELL NE 2 M. =
BASHI= NE 5-6, 7-8 LATER. RAIN PATCHES. SEA 2-3 M, 4-6 M LATER. SWELL NE 2 M. =
PRATAS= NE 5-6, UP TO 7 LATER. RAIN PATCHES. SEA 2-3 M, UP TO 4 M LATER. SWELL NE 2 M. =
BALINTANG= NE 5-6, 7-8 LATER. RAIN PATCHES. SEA 2-3 M, 4-6 M LATER. SWELL NE 2 M. =
SCARBOROUGH= NE 5-6, UP TO 7 LATER. CLD. SEA 2-3 M, UP TO 4 M LATER. SWELL NE 2 M. =
PARACEL= NE 5-6, UP TO 7 LATER. RAIN PATCHES. SEA 2-3 M, UP TO 4 M LATER. SWELL NE 2 M. =
TONKIN= N TO NE 6-7. RAIN PATCHES. SEA 2 M, 3-4 M LATER. =
DANANG= N TO NE 5-6, UP TO 7 LATER. RAIN PATCHES. SEA 2-3 M, UP TO 4 M LATER. SWELL NE 2 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 22/Dec/2016

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 12:30 p.m. on 22 December 2016

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

    Nan'ao:
    Northeast force 6 to 7, occasionally force 8 later.
    Rough to very rough seas.

    Shanwei:
    Northeast force 6 to 7.
    Rough seas.

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

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

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

    Waglan Island Wind north force 4
      Visibility 18 Kilometres

    Shantou Wind north-northeast force 2
      Visibility 23 Kilometres

    Huangmaozhou Wind north-northwest force 5

    Macau Wind north force 3
      Visibility 7 Kilometres

    Xisha Wind northeast force 3
      Visibility 18 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 22/DEC/2016
    (Next update at 17:30 HKT 22/DEC/2016)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     STRONG WINDS AND SEV TURB.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     A COLD FRONT IS MOVING ACROSS THE COAST OF
     GUANGDONG. THE ASSOCIATED NORTHEAST MONSOON WILL
     AFFECT THE REGION GRADUALLY.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1000 TO 2000 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  360/10-15
       OFFSHORE:  010/15-20, OCNL 25                   21-25
   B.   2000 FT:  010/15-20, OCNL 25                   17
   C.   5000 FT:  010/15                               14
   D.  10000 FT:  260/15                               6
   E.  18000 FT:  260/30                               MS6
   F.  24000 FT:  270/50                               MS18
   G.  30000 FT:  270/55                               MS31
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      2100-2200 FT.
   I. WEATHER       : 
      MAINLY CLOUDY WITH A FEW RAIN AND MIST PATCHES
      AT FIRST, BECOMING FINE DURING THE DAY.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1500 FT SCT 4000 FT.
   K. VISIBILITY    : 8 KM.  TEMPO 4000 M IN RAIN/MIST.
   L. 0 DEG. C LEVEL: 15000 FT      10 DEG. C LEVEL(S) : 9000 FT
   M. TURBULENCE    : MOD TO SEV.
   N. SEA STATE     : 2.0-3.5 M     SEA TEMPERATURE    : 21 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE TO FRESH NORTHERLY WINDS, OCCASIONALLY
     STRONG OFFSHORE. 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

    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 22/Dec/2016 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     22.6 C
Minimum Air Temperature                     21.0 C
Grass Minimum Temperature                   19.0 C
Relative Humidity                        82 - 95 Percent
Rainfall                                     2.8 mm 
Total rainfall since 1st January          3023.0 mm
Against an average of                     2386.5 mm

Other Stations                Min                  Max
King's Park                  20.5 C               22.3 C
Wong Chuk Hang               21.1 C               23.9 C
Ta Kwu Ling                  18.4 C               23.1 C
Lau Fau Shan                 20.0 C               24.3 C
Tai Po                       19.4 C               22.0 C
Sha Tin                      20.3 C               22.5 C
Tuen Mun                     20.8 C               23.4 C
Tseung Kwan O                20.5 C               21.8 C
Sai Kung                     20.7 C               22.6 C
Cheung Chau                  20.1 C               22.1 C
Chek Lap Kok                 21.3 C               24.5 C
Tsing Yi                     21.0 C               23.2 C
Shek Kong                    19.6 C               23.1 C
Tsuen Wan Ho Koon            19.5 C               21.6 C
Tsuen Wan Shing Mun Valley   20.7 C               24.5 C
Hong Kong Park               20.4 C               22.4 C
Shau Kei Wan                 20.1 C               22.6 C
Kowloon City                 20.3 C               22.5 C
Happy Valley                 21.4 C               23.5 C
Wong Tai Sin                 21.2 C               23.5 C
Stanley                      20.4 C               22.9 C
Kwun Tong                    20.8 C               22.8 C
Sham Shui Po                 21.1 C               23.5 C
Kai Tak Runway Park          21.1 C               23.1 C
Yuen Long Park               19.7 C               23.7 C

Duration of sunshine (King's Park):              0.2 H
The mean UV index recorded at King's Park yesterday was 0.8,
the UV intensity was Low.
The maximum UV index for yesterday was 3.
Sea surface temperature (Waglan Island):        21.9 C 

Yesterday's (21 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 21 Dec
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