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Bulletin issued at 15:02 HKT 29/Jan/2017

At 3 p.m. at the Hong Kong Observatory the air temperature was 20 degrees Celsius and the relative humidity 82 per cent.
During the past hour the mean UV Index recorded at King's Park was 2. The intensity of UV radiation was low.

The air temperatures at other places were:

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

Between 1:45 and 2:45 p.m., the rainfall recorded in various regions were:

Islands District 0 to 2 mm;
Tsuen Wan 0 to 2 mm;
Tuen Mun 0 to 2 mm.


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


Climatological Information for 29 Jan

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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UV Index Forecast |  Weather Information for South China Coastal Waters

Bulletin updated at 14:45 HKT 29/Jan/2017

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

A relatively humid easterly airstream is affecting the coast of Guangdong. Meanwhile, a band of clouds is covering the region.

Weather forecast for this afternoon and tonight

Mainly cloudy with one or two rain patches. Visibility relatively low in some areas. Moderate easterly winds.

Outlook : Mild during the day tomorrow. Becoming cooler at night. It will be cool in the morning in the following few days.


(The above forecast period is valid up to 23:59 HKT today, 29/01/2017; 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 09:00 HKT 29/Jan/2017

N0 WARNING.

GENERAL SITUATION AT 282100 UTC:
AN EASTERLY AIRSTREAM IS GENERALLY AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 290100 UTC:

HONG KONG= E 4-5. DOWN TO 4000 M IN MIST OR LGT RAIN PATCHES. SEA UP TO 2 M. TEMP 21-18 C. =
KWANGTUNG= E 4-5. DOWN TO 4000 M IN MIST OR RAIN PATCHES. SEA UP TO 2 M. =
TAIWAN STRAIT= NE 4-5. DOWN TO 4000 M IN MIST PATCHES. SEA UP TO 2 M. =
BASHI= E 5-6. RAIN PATCHES. SEA 2-3 M. SWELL NE 2 M. =
PRATAS= E 4-5. RAIN PATCHES. SEA UP TO 2 M. =
BALINTANG= E 5-6. RAIN PATCHES. SEA 2-3 M. SWELL NE 2 M. =
SCARBOROUGH= E TO NE 4-5. RAIN PATCHES. SEA UP TO 2 M. =
PARACEL= E TO NE 4-5. RAIN PATCHES. SEA UP TO 2 M. =
TONKIN= E TO SE 4-5. DOWN TO 4000 M IN MIST PATCHES. SEA UP TO 2 M. =
DANANG= E TO NE 4-5. CLD. SEA UP TO 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 14:45 HKT 29/Jan/2017

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 2:45 p.m. on 29 January 2017

    Weather Situation:
    An easterly airstream is affecting the south China coastal waters.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    East force 4 to 5.
    A few rain patches, visibility relatively low in some areas.
    Moderate seas.

    Nan'ao, Shanwei, South of Hong Kong and Shangchuan Dao:
    East force 4 to 5.
    Moderate seas.

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

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

    Waglan Island Wind northeast force 4
      Visibility 9 Kilometres

    Shantou Wind east force 1
      Visibility 18 Kilometres

    Dongsha Wind east force 3
      Visibility 10 Kilometres

    Huangmaozhou Wind east-northeast force 3

    Macau Wind north force 1
      Visibility 3200 Metres in mist

    Xisha Wind north-northeast force 2
      Visibility 29 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 29/JAN/2017
    (Next update at 17:30 HKT 29/JAN/2017)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     STRONG WINDS AND SEV TURB.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     AN EASTERLY AIRSTREAM 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:  090/10, UP TO 15 AT FIRST
       OFFSHORE:  070/15-20, OCNL 25 AT FIRST          19-22
   B.   2000 FT:  130/20-25, OCNL 30 AT FIRST          16
   C.   5000 FT:  160/15-20                            14
   D.  10000 FT:  210/25                               12
   E.  18000 FT:  230/30                               MS6
   F.  24000 FT:  250/40                               MS16
   G.  30000 FT:  240/45                               MS30
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      1800 - 2300 FT
   I. WEATHER       : 
      MAINLY CLOUDY WITH A FEW RAIN PATCHES. SUNNY
      INTERVALS DURING THE DAY. LOCALIZED MIST.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1500 FT SCT 2500 FT BKN 6000 FT.
   K. VISIBILITY    : 7 KM. TEMPO 2000 M IN RAIN/MIST
   L. 0 DEG. C LEVEL: 16500 FT      10 DEG. C LEVEL(S) : 6500, 8500, 11000 FT
   M. TURBULENCE    : MOD TO SEV NEAR HILLS AND OFFSHORE
   N. SEA STATE     : 2.0-3.0 M     SEA TEMPERATURE    : 18 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE TO FRESH EASTERLY WINDS. MAINLY CLOUDY
     WITH A FEW RAIN PATCHES. LOCALIZED MIST.=

    ===================================================================
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 21:17 HKT on 12 Jan 17

    VHHK SIGMET 1 VALID 120920/121320 VHHH- VHHK HONG KONG FIR EMBD TS FCST S OF LINE N1742 E11306 - N1724 E11436 TOP FL400 MOV NW 10KT NC= VHHK SIGMET 2 VALID 121320/121720 VHHH- VHHK HONG KONG FIR EMBD TS FCST S OF LINE N1742 E11306 - N1724 E11436 TOP FL400 MOV NW 10KT 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 29/Jan/2017 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     18.8 C
Minimum Air Temperature                     16.4 C
Grass Minimum Temperature                   14.8 C
Relative Humidity                        68 - 87 Percent
Rainfall                                     0.3 mm 
Total rainfall since 1st January             3.7 mm
Against an average of                       22.9 mm

Other Stations                Min                  Max
King's Park                  15.1 C               19.3 C
Wong Chuk Hang               13.7 C               19.1 C
Ta Kwu Ling                  12.4 C               21.4 C
Lau Fau Shan                 14.0 C               22.2 C
Tai Po                       14.5 C               19.4 C
Sha Tin                      13.3 C               19.4 C
Tuen Mun                     14.9 C               20.2 C
Tseung Kwan O                14.5 C               18.0 C
Sai Kung                     14.3 C               18.2 C
Cheung Chau                  14.8 C               19.8 C
Chek Lap Kok                 16.9 C               21.8 C
Tsing Yi                     14.2 C               20.5 C
Shek Kong                    12.5 C               21.3 C
Tsuen Wan Ho Koon            13.6 C               20.0 C
Tsuen Wan Shing Mun Valley   12.0 C               21.0 C
Hong Kong Park               15.6 C               19.9 C
Shau Kei Wan                 15.4 C               19.0 C
Kowloon City                 15.1 C               19.8 C
Happy Valley                 15.4 C               19.6 C
Wong Tai Sin                 15.9 C               20.2 C
Stanley                      16.0 C               18.1 C
Kwun Tong                    15.4 C               18.3 C
Sham Shui Po                 15.5 C               20.9 C
Kai Tak Runway Park          16.6 C               18.9 C
Yuen Long Park               12.7 C               21.6 C
Tai Mei Tuk               14.8 C               19.6 C

Duration of sunshine (King's Park):              0.7 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 5.
Sea surface temperature (Waglan Island):        18.3 C 

Yesterday's (28 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                      0.13
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 28 Jan
     2003copy right image | Important notices | Privacy policy Last revision date: <29 Jan 2017> 

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