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Bulletin issued at 12:02 HKT 23/Jan/2017

At noon at the Hong Kong Observatory the air temperature was 18 degrees Celsius and the relative humidity 62 per cent.
During the past hour the mean UV Index recorded at King's Park was 4. The intensity of UV radiation was moderate.

The air temperatures at other places were:

King's Park 19 degrees;
Ta Kwu Ling 20 degrees;
Lau Fau Shan 18 degrees;
Tai Po 18 degrees;
Sha Tin 18 degrees;
Tuen Mun 20 degrees;
Tseung Kwan O 18 degrees;
Sai Kung 18 degrees;
Cheung Chau 18 degrees;
Chek Lap Kok 20 degrees;
Tsing Yi 19 degrees;
Shek Kong 20 degrees;
Tsuen Wan Ho Koon 19 degrees;
Tsuen Wan Shing Mun Valley 19 degrees;
Hong Kong Park 19 degrees;
Shau Kei Wan 18 degrees;
Kowloon City 19 degrees;
Happy Valley 19 degrees;
Wong Tai Sin 20 degrees;
Stanley 17 degrees;
Kwun Tong 18 degrees;
Sham Shui Po 19 degrees;
Kai Tak Runway Park 18 degrees;
Yuen Long Park 20 degrees;
Tai Mei Tuk 19 degrees.

No rainfall was 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 23 Jan

Regional Weather in Hong Kong

Information on Tropical Cyclones

Hong Kong Climatology


Local Weather Forecast
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Local Weather Forecast

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Bulletin updated at 11:45 HKT 23/Jan/2017

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

The northeast monsoon is bringing generally fine and dry weather to the coast of Guangdong. Locally, the relative humidity in many places fell to about 60 per cent around noon.

Weather forecast for this afternoon and tonight

Mainly fine and dry. Cloudy periods tonight. Moderate to fresh east to northeasterly winds, occasionally strong offshore later.

Outlook : Cloudier in the next couple of days. Mainly fine and dry in the latter part of this week. Milder during the day.


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

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

GENERAL SITUATION AT 222100 UTC:
AN INTENSE NORTHEAST MONSOON IS AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 230100 UTC:

HONG KONG= E TO NE 5-6, UP TO 7 LATER. CLD. SEA 2-3 M, UP TO 4 M LATER. SWELL NE 2 M. TEMP 19-15 C. =
KWANGTUNG= E TO NE 6-7. CLD. SEA 3-4 M. SWELL NE 2-3 M. =
TAIWAN STRAIT= NE 7-8. CLD. SEA 4-6 M. SWELL NE 3 M. =
BASHI= NE 7-8. RAIN PATCHES. SEA 4-6 M. SWELL NE 3 M. =
PRATAS= NE 7-8. RAIN PATCHES. SEA 4-6 M. SWELL NE 3 M. =
BALINTANG= NE 7-8. RAIN PATCHES. SEA 4-6 M. SWELL NE 3 M. =
SCARBOROUGH= NE 7-8. RAIN PATCHES. SEA 4-6 M. SWELL NE 3 M. =
PARACEL= NE 7-8. RAIN PATCHES. SEA 4-6 M. SWELL NE 3 M. =
TONKIN= NE 5-6. RAIN PATCHES. SEA 2-3 M. =
DANANG= NE 6-7. RAIN PATCHES. SEA 3-4 M. SWELL 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 23/Jan/2017

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 12:30 p.m. on 23 January 2017

    Warnings:
    Gale force winds in Nan'ao and Shanwei. Strong winds in Hong Kong adjacent waters, 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, up to force 7 later.
    Moderate to rough seas.

    Nan'ao and Shanwei:
    East to northeast force 6 to 7, occasionally force 8.
    Rough to very rough seas.

    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 east-northeast force 4
      Visibility 9 Kilometres

    Shantou Wind east force 2
      Visibility 21 Kilometres

    Dongsha Wind northeast force 5
      Visibility 10 Kilometres

    Huangmaozhou Wind east-northeast force 5

    Macau Wind north-northeast force 3
      Visibility 9 Kilometres

    Xisha Wind northeast force 3
      Visibility 7 Kilometres in showers

  • 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 23/JAN/2017
    (Next update at 17:30 HKT 23/JAN/2017)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     STRONG WINDS. SEV GUSTS. SEV TURB.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     THE NORTHEAST MONSOON IS AFFECTING THE SOUTH
     CHINA COASTAL AREAS.
     
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1000 TO 2000 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  060/10-15
                  BECMG 060/15-20G25
       OFFSHORE:  060/15-20G25 OCNL 25G35
                  BECMG 060/25G35                      20-17
   B.   2000 FT:  060/20-25                            10
   C.   5000 FT:  110/15                               8
   D.  10000 FT:  260/20                               4
   E.  18000 FT:  270/35                               MS8
   F.  24000 FT:  270/60                               MS18
   G.  30000 FT:  270/70                               MS32
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL
   I. WEATHER       : 
      FINE. LOCALISED HAZE.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      SCT 8000 FT
   K. VISIBILITY    : 8 KM TEMPO 4000 M IN HAZE.
   L. 0 DEG. C LEVEL: 15500 FT      10 DEG. C LEVEL(S) : 2000 FT
   M. TURBULENCE    : MOD TO SEV
   N. SEA STATE     : 3.0-4.0 M     SEA TEMPERATURE    : 19 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE TO FRESH EAST TO NORTHEASTERLY WINDS,
     STRONG OFFSHORE. CLOUDY.=

    ===================================================================
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 23/Jan/2017 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     19.8 C
Minimum Air Temperature                     13.6 C
Grass Minimum Temperature                   12.6 C
Relative Humidity                        44 - 75 Percent
Rainfall                                       0 mm 
Total rainfall since 1st January             3.4 mm
Against an average of                       14.8 mm

Other Stations                Min                  Max
King's Park                  12.8 C               20.3 C
Ta Kwu Ling                   7.2 C               21.3 C
Lau Fau Shan                 10.5 C               20.1 C
Tai Po                       10.7 C               19.8 C
Sha Tin                      12.5 C               19.9 C
Tuen Mun                     12.7 C               21.6 C
Tseung Kwan O                11.3 C               21.2 C
Sai Kung                     12.3 C               18.2 C
Cheung Chau                  12.2 C               18.6 C
Chek Lap Kok                 13.9 C               19.7 C
Tsing Yi                     13.4 C               21.1 C
Shek Kong                    10.3 C               22.1 C
Tsuen Wan Ho Koon            10.4 C               20.6 C
Tsuen Wan Shing Mun Valley   11.0 C               21.7 C
Hong Kong Park               13.1 C               20.5 C
Shau Kei Wan                 12.7 C               19.5 C
Kowloon City                 12.2 C               21.8 C
Happy Valley                 12.5 C               20.8 C
Wong Tai Sin                 12.6 C               21.5 C
Stanley                      13.3 C               18.8 C
Kwun Tong                    12.6 C               20.1 C
Sham Shui Po                 12.8 C               21.8 C
Kai Tak Runway Park          14.1 C               20.0 C
Yuen Long Park               12.0 C               22.6 C
Tai Mei Tuk               12.0 C               20.1 C

Duration of sunshine (King's Park):              9.8 H
The mean UV index recorded at King's Park yesterday was 3,
the UV intensity was Moderate.
The maximum UV index for yesterday was 6.
Sea surface temperature (Waglan Island):        19.5 C 

Yesterday's (22 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                          0.10
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 22 Jan
     2003copy right image | Important notices | Privacy policy Last revision date: <23 Jan 2017> 

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