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Bulletin issued at 10:02 HKT 15/Jan/2017

At 10 a.m. at the Hong Kong Observatory the air temperature was 15 degrees Celsius and the relative humidity 93 per cent.
During the past hour the mean UV Index recorded at King's Park was 0.6. The intensity of UV radiation was low.

The air temperatures at other places were:

King's Park 14 degrees;
Wong Chuk Hang 15 degrees;
Ta Kwu Ling 13 degrees;
Lau Fau Shan 13 degrees;
Tai Po 13 degrees;
Sha Tin 14 degrees;
Tuen Mun 13 degrees;
Tseung Kwan O 14 degrees;
Sai Kung 14 degrees;
Cheung Chau 14 degrees;
Chek Lap Kok 14 degrees;
Tsing Yi 15 degrees;
Shek Kong 13 degrees;
Tsuen Wan Ho Koon 14 degrees;
Tsuen Wan Shing Mun Valley 14 degrees;
Hong Kong Park 14 degrees;
Shau Kei Wan 13 degrees;
Kowloon City 14 degrees;
Happy Valley 15 degrees;
Wong Tai Sin 14 degrees;
Stanley 15 degrees;
Kwun Tong 14 degrees;
Sham Shui Po 14 degrees;
Kai Tak Runway Park 15 degrees;
Yuen Long Park 14 degrees;
Tai Mei Tuk 14 degrees.

Between 8:45 and 9:45 a.m., the rainfall recorded in various regions were:

Sai Kung 0 to 2 mm;
Sha Tin 0 to 1 mm;
Tai Po 0 to 1 mm.


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


Climatological Information for 15 Jan

Regional Weather in Hong Kong

Information on Tropical Cyclones

Hong Kong Climatology


Local Weather Forecast
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Bulletin updated at 09:45 HKT 15/Jan/2017

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

The northeast monsoon continues to bring cool weather to the coastal areas of Guangdong.

Weather forecast for today

Cloudy to overcast with a few rain patches. It will be cool. Moderate to fresh northeasterly winds.

Outlook : Remaining cool and windy in the next couple of days.


(The above forecast period is valid up to 23:59 HKT today, 15/01/2017; 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 15/Jan/2017

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

GENERAL SITUATION AT 142100 UTC:
THE NORTHEAST MONSOON IS AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 150100 UTC:

HONG KONG= E TO NE 5-6, OCNL 7. A FEW RAIN PATCHES. SEA 3 M. SWELL E 2 M. TEMP 17-14 C. =
KWANGTUNG= E TO NE 6-7, OCNL 8 IN E. 4000 M IN RAIN PATCHES. SEA 4 M. SWELL E 2-3 M. =
TAIWAN STRAIT= NE 7-8. RAIN PATCHES. SEA 4-6 M. SWELL NE 3 M. =
BASHI= NE 7-8. A FEW RAIN PATCHES. SEA 4-6 M. SWELL NE 3 M. =
PRATAS= NE 6-7, OCNL 8 IN N. RAIN PATCHES. SEA 4-6 M. SWELL NE 3 M. =
BALINTANG= NE 7, OCNL 8. RAIN PATCHES. SEA 4-6 M. SWELL NE 2-3 M. =
SCARBOROUGH= NE 6, OCNL 7. RAIN PATCHES. SEA 3-4 M. SWELL NE 2 M. =
PARACEL= NE 6-7. RAIN PATCHES. SEA 3-4 M. SWELL E TO NE 2 M. =
TONKIN= NE 5-6. CLD. SEA 2-3 M. =
DANANG= NE 5-6, OCNL 7. 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 3-4 M. 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 09:30 HKT 15/Jan/2017

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 9:30 a.m. on 15 January 2017

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

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

    Shanwei, South of Hong Kong and Shangchuan Dao:
    East 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-northeast force 4
      Visibility 8 Kilometres

    Shantou Wind east-northeast force 1
      Visibility 3100 Metres in rain

    Dongsha Wind northeast force 4
      Visibility 10 Kilometres

    Huangmaozhou Wind northeast force 4

    Macau Wind north force 3
      Visibility 2800 Metres

    Xisha Wind east-northeast force 3
      Visibility 21 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 15/JAN/2017
    (Next update at 17:30 HKT 15/JAN/2017)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     STRONG WINDS AND SEV TURB.

II.  SYNOPSIS OF THE WEATHER SITUATION :
     THE NORTHEAST MONSOON IS AFFECTING THE COASTAL
     AREAS OF GUANGDONG.

III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1000 TO 2000 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  040/10
       OFFSHORE:  060/15-20, OCNL 25                   13-17
   B.   2000 FT:  070/15-20, OCNL 25                   11
   C.   5000 FT:  210/10                               12
   D.  10000 FT:  270/25                               4
   E.  18000 FT:  280/50                               MS3
   F.  24000 FT:  270/50                               MS15
   G.  30000 FT:  260/55                               MS29
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      3000 - 4900 FT.
   I. WEATHER       : 
      CLOUDY TO OVERCAST WITH A FEW RAIN AND MIST
      PATCHES.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 800 FT  SCT 1500 FT  BKN 8000 FT.
   K. VISIBILITY    : 7 KM.  TEMPO 3000 M IN RAIN/MIST.
   L. 0 DEG. C LEVEL: 14500 FT
      10 DEG. C LEVEL(S) : 2200, 3800, 6800 FT
   M. TURBULENCE    : MOD TO SEV OFFSHORE AND NEAR HILLS.
   N. SEA STATE     : 2.0-3.0 M     SEA TEMPERATURE    : 18 DEG

IV.  FURTHER OUTLOOK: 
     MODERATE TO FRESH NORTHEASTERLY WINDS.  CLOUDY
     WITH A FEW RAIN AND MIST 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 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 15/Jan/2017 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     16.5 C
Minimum Air Temperature                     14.5 C
Grass Minimum Temperature                   15.7 C
Relative Humidity                        81 - 96 Percent
Rainfall                                     1.0 mm 
Total rainfall since 1st January             1.5 mm
Against an average of                        9.9 mm

Other Stations                Min                  Max
King's Park                  13.6 C               16.3 C
Wong Chuk Hang               14.7 C               16.0 C
Ta Kwu Ling                  11.5 C               14.8 C
Lau Fau Shan                 11.8 C               15.1 C
Tai Po                       12.1 C               15.3 C
Sha Tin                      12.8 C               15.5 C
Tuen Mun                     12.3 C               15.2 C
Tseung Kwan O                13.2 C               15.6 C
Sai Kung                     13.1 C               15.6 C
Cheung Chau                  13.6 C               15.9 C
Chek Lap Kok                 13.1 C               17.9 C
Tsing Yi                     14.0 C               16.6 C
Shek Kong                    12.0 C               15.3 C
Tsuen Wan Ho Koon            11.9 C               16.0 C
Tsuen Wan Shing Mun Valley   13.5 C               16.7 C
Hong Kong Park               14.2 C               16.2 C
Shau Kei Wan                 13.2 C               15.6 C
Kowloon City                 13.2 C               16.4 C
Happy Valley                 14.9 C               16.5 C
Wong Tai Sin                 13.5 C               16.7 C
Stanley                      14.6 C               16.4 C
Kwun Tong                    13.6 C               15.9 C
Sham Shui Po                 13.7 C               17.0 C
Kai Tak Runway Park          14.4 C               16.5 C
Yuen Long Park               12.2 C               15.2 C
Tai Mei Tuk               12.5 C               15.7 C

Duration of sunshine (King's Park):              0 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):        20.4 C 

Yesterday's (14 Jan 2017) average ambient gamma radiation
dose rate taken outdoors in Hong Kong ranged from 0.09 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                           0.09
Tap Mun                             0.09
Kat O                               0.11
Yuen Ng Fan                         0.12
Tai Mei Tuk                         0.13
Sha Tau Kok                         0.11
Kwun Tong                           0.12
Sai Wan Ho                          0.10
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 14 Jan
     2003copy right image | Important notices | Privacy policy Last revision date: <15 Jan 2017> 

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