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Bulletin issued at 00:02 HKT 09/Jan/2017

At midnight at the Hong Kong Observatory the air temperature was 22 degrees Celsius and the relative humidity 73 per cent.

The air temperatures at other places were:

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


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


Climatological Information for 9 Jan

Regional Weather in Hong Kong

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Bulletin updated at 00:00 HKT 09/Jan/2017

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

The northeast monsoon affected the coastal areas of Guangdong gradually yesterday. Locally, it was mainly fine apart from relatively low visibility in some areas. Visibility over the western part of the territory fell below 5000 metres in the afternoon. The northeast monsoon will bring slightly cooler weather to the coast of Guangdong in the next couple of days.

Besides, the area of low pressure over the seas near the southern part of the Philippines intensified into a tropical depression yesterday. At 11 p.m. last night, the tropical depression was centred about 750 kilometres southeast of Manila. It is forecast to move west at about 14 kilometres per hour across the Philippines.

Weather forecast for Hong Kong (Monday, 9 Jan 2017)

Mainly fine apart from relatively low visibility in some areas at first. Slightly cooler in the morning. The minimum temperature will be about 18 degrees in the urban areas, and a couple of degrees lower in the New Territories. The maximum temperature will be about 22 degrees during the day. Moderate northerly winds, strengthening from the east later.

Outlook : Windier and slightly cooler in the following couple of days.


(The above forecast period is valid up to 23:59 HKT today, 09/01/2017; 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 08/Jan/2017

N0 WARNING.

GENERAL SITUATION AT 080900 UTC:
THE NORTHEAST MONSOON IS AFFECTING THE FORECAST AREAS GRADUALLY.

MARINE FORECAST FOR 24 HOURS FROM 081300 UTC:

HONG KONG= N 4-5, E TO NE 5-6 LATER. DOWN TO 4000 M IN SOME HAZE. SEA 2 M, UP TO 3 M LATER. TEMP 18-22 C. =
KWANGTUNG= NE 5-6, UP TO 7 IN E LATER. FINE. SEA 2-3 M, UP TO 4 M IN E LATER. =
TAIWAN STRAIT= NE 5-6, UP TO 7 LATER. CLD. SEA 2-3 M, UP TO 4 M LATER. SWELL NE 2 M LATER. =
BASHI= NE 5-6, UP TO 7 LATER. CLD. SEA 2-3 M, UP TO 4 M LATER. =
PRATAS= NE 4-5, 6-7 LATER. CLD. SEA 2 M, 3-4 M LATER. =
BALINTANG= NE 5-6, UP TO 7 LATER. CLD. SEA 2-3 M, UP TO 4 M LATER. =
SCARBOROUGH= NE 5-6, UP TO 7 LATER. ISOL SHOWERS. SEA 2-3 M, UP TO 4 M LATER. =
PARACEL= NE 4-5, UP TO 6 LATER. FINE. SEA 2 M, UP TO 3 M LATER. =
TONKIN= E TO NE 4-5, UP TO 6 LATER. CLD. SEA 2 M, UP TO 3 M LATER. =
DANANG= NE 4-5, UP TO 6 LATER. CLD. SEA 2 M, UP TO 3 M LATER. =
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 23:30 HKT 08/Jan/2017

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 11:30 p.m. on 08 January 2017

    Warnings:
    Strong winds in all areas.

    Weather Situation:
    The northeast monsoon is affecting the south China coastal waters gradually. Besides, the tropical depression over the southern part of the Philippines will move across the Philippines towards the southern part of the South China Sea in the next couple of days.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    North force 4 to 5, becoming east to northeast force 5 to 6 later.
    Visibility relatively low in some areas at first.
    Moderate seas, becoming rough later.

    Nan'ao and Shanwei:
    Northeast force 5 to 6, up to force 7 later.
    Moderate to rough seas.

    South of Hong Kong and Shangchuan Dao:
    Northeast force 4 to 5, up to force 6 later.
    Moderate seas, becoming rough later.

    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-northeast force 2
      Visibility 9 Kilometres

    Shantou Wind east-northeast force 2
      Visibility 10 Kilometres

    Huangmaozhou Wind variable force 1

    Macau Wind north force 2
      Visibility 4300 Metres in haze

    Xisha Wind east-northeast force 3
      Visibility 20 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 17:30 HKT 08/JAN/2017
    (Next update at 01:30 HKT 09/JAN/2017)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     NIL.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     THE NORTHEAST MONSOON IS AFFECTING THE COASTAL AREAS OF
     GUANGDONG GRADUALLY.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1800 TO 0400 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  020/10
       OFFSHORE:  020/15-20                            24-17
   B.   2000 FT:  060/15-20                            15
   C.   5000 FT:  120/10                               13
   D.  10000 FT:  280/20                               6
   E.  18000 FT:  270/30                               MS3
   F.  24000 FT:  260/40                               MS16
   G.  30000 FT:  260/50                               MS26
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      MAINLY FINE.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 3000 FT SCT 10000 FT.
   K. VISIBILITY    : 7 KM. TEMPO 4000 M IN HAZE.
   L. 0 DEG. C LEVEL: 16500 FT      10 DEG. C LEVEL(S) : 7600 FT
   M. TURBULENCE    : MOD OFFSHORE AND NEAR HILLS.
   N. SEA STATE     : 1.5-2.0 M     SEA TEMPERATURE    : 21 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE NORTHEASTERLY WINDS, OCCASIONALLY FRESH 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 10:50 HKT on 30 Dec 16

    VHHK SIGMET 1 VALID 300250/300650 VHHH- VHHK HONG KONG FIR SEV ICE FCST WI N1800 E11248 - N1930 E11130 - N2130 E11130 - N2230 E11500 - N2200 E11500 - N1800 E11248 FL240/300 STNR 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 09/Jan/2017 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     25.5 C
Minimum Air Temperature                     20.5 C
Grass Minimum Temperature                   18.5 C
Relative Humidity                        64 - 85 Percent
Rainfall                                       0 mm 
Total rainfall since 1st January               0 mm
Against an average of                        6.7 mm

Other Stations                Min                  Max
King's Park                  19.5 C               25.9 C
Wong Chuk Hang               18.1 C               24.7 C
Ta Kwu Ling                  17.3 C               27.8 C
Lau Fau Shan                 18.9 C               25.4 C
Tai Po                       18.7 C               26.1 C
Sha Tin                      18.0 C               26.5 C
Tuen Mun                     19.2 C               27.8 C
Tseung Kwan O                17.7 C               27.3 C
Sai Kung                     18.8 C               25.3 C
Cheung Chau                  19.2 C               24.2 C
Chek Lap Kok                 20.5 C               26.1 C
Tsing Yi                     18.8 C               26.4 C
Shek Kong                    18.0 C               27.3 C
Tsuen Wan Ho Koon            18.3 C               26.4 C
Tsuen Wan Shing Mun Valley   18.3 C               27.8 C
Hong Kong Park               19.3 C               26.8 C
Shau Kei Wan                 19.1 C               25.6 C
Kowloon City                 19.5 C               28.8 C
Happy Valley                 18.7 C               27.7 C
Wong Tai Sin                 19.3 C               28.8 C
Stanley                      18.8 C               24.2 C
Kwun Tong                    20.2 C               27.8 C
Sham Shui Po                 19.9 C               27.2 C
Kai Tak Runway Park          19.9 C               26.4 C
Yuen Long Park               18.2 C               28.1 C
Tai Mei Tuk               19.0 C               26.7 C

Duration of sunshine (King's Park):              8.2 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 4.
Sea surface temperature (Waglan Island):        21.0 C 

Yesterday's (08 Jan 2017) 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                         0.15
Tsim Bei Tsui                       0.13
Cape D'Aguilar                      0.14
Chek Lap Kok                        0.15

Note

      

    1. From readings taken at various locations in Hong Kong during
the period 1987-2016, 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 08 Jan
     2003copy right image | Important notices | Privacy policy Last revision date: <09 Jan 2017> 

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