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Bulletin issued at 21:02 HKT 10/Feb/2018

At 9 p.m. at the Hong Kong Observatory the air temperature was 18 degrees Celsius and the relative humidity 81 per cent.

Please be reminded that:

The Cold Weather Warning is now in force. Cold weather might cause adverse health effects. Members of the public should take care to keep warm.

The air temperatures at other places were:

King's Park 17 degrees;
Wong Chuk Hang 16 degrees;
Ta Kwu Ling 17 degrees;
Tai Po 17 degrees;
Sha Tin 18 degrees;
Tuen Mun 18 degrees;
Tseung Kwan O 16 degrees;
Sai Kung 16 degrees;
Cheung Chau 16 degrees;
Chek Lap Kok 17 degrees;
Tsing Yi 17 degrees;
Shek Kong 18 degrees;
Tsuen Wan Ho Koon 16 degrees;
Tsuen Wan Shing Mun Valley 17 degrees;
Hong Kong Park 17 degrees;
Shau Kei Wan 17 degrees;
Kowloon City 17 degrees;
Happy Valley 17 degrees;
Wong Tai Sin 18 degrees;
Stanley 17 degrees;
Kwun Tong 17 degrees;
Sham Shui Po 18 degrees;
Kai Tak Runway Park 18 degrees;
Yuen Long Park 18 degrees;
Tai Mei Tuk 17 degrees.


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


Climatological Information for 10 Feb

Regional Weather in Hong Kong

Information on Tropical Cyclones

Hong Kong Climatology


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Local Weather Forecast

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 20:45 HKT 10/Feb/2018

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

A cold front is moving across the coast of Guangdong. The associated winter monsoon will affect the region gradually.

Weather forecast for tonight and tomorrow

Mainly cloudy with relatively low visibility in some areas at first. Becoming cold and dry tomorrow. The minimum temperature will be about 12 degrees. Sunny intervals during the day with a maximum temperature of around 16 degrees. Light winds, strengthening from the north gradually.

Outlook : Mainly fine with cold morning on Monday. Temperatures rising towards the Lunar New Year.


(The above forecast period is valid up to 23:59 HKT tomorrow, 11/02/2018; Regular update at : around 45 minutes past each hour, 16:15 HKT and 23:15 HKT)

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MARINE FORECAST
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Marine Forecast

Weather Information for the Marine Community

Bulletin issued at 21:05 HKT 10/Feb/2018

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

GENERAL SITUATION AT 100900 UTC:
COLD FRONT 22N 107E 25N 116E 25N 120E S 10KT.

MARINE FORECAST FOR 24 HOURS FROM 101305 UTC:

HONG KONG= N TO NE 5-6. DOWN TO 4000 M IN MIST PATCHES. SEA 2-3 M. SWELL E UP TO 2 M. TEMP 12-16 C. =
KWANGTUNG= N TO NE 6-7, OCNL 8 IN E. DOWN TO 4000 M IN MIST OR RAIN PATCHES AT FIRST. SEA 3-4 M, UP TO 6 M IN E. SWELL E 2 M. =
TAIWAN STRAIT= N TO NE 7-8. LGT RAIN PATCHES. SEA 4-6 M. SWELL NE 2 M, 3 M LATER. =
BASHI= N TO NE 6-7, BEC 8. RAIN PATCHES. SEA 3-4 M, BEC 6 M. SWELL NE 2 M. =
PRATAS= N TO NE 6-7. RAIN PATCHES. SEA 3-4 M. SWELL E TO NE 2 M. =
BALINTANG= E TO NE 5-6, BEC N 8. RAIN PATCHES. SEA 2-3 M, UP TO 6 M LATER. SWELL E TO NE 2 M. =
SCARBOROUGH= E 6, BEC N 7-8. RAIN PATCHES. SEA 3 M, BEC 4-6 M. SWELL NE 2 M. =
PARACEL= E 6, BEC N 7-8. FINE. SEA 3 M, BEC 4-6 M. SWELL E TO NE 2 M. =
TONKIN= N TO NE 6-7. DOWN TO 4000 M IN MIST OR LGT RAIN PATCHES AT FIRST. SEA 3-4 M. =
DANANG= E 4-5, BEC N 7. DOWN TO 4000 M IN MIST PATCHES AT FIRST. SEA 2 M, BEC 4 M. SWELL E TO NE 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 19:30 HKT 10/Feb/2018

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 7:30 p.m. on 10 February 2018

    Warnings:
    Gale force winds in Nan'ao. Strong winds in Hong Kong adjacent waters, Shanwei, south of Hong Kong and Shangchuan Dao.

    Weather Situation:
    A cold front is moving across the coast of Guangdong. The associated northeast monsoon will affect the south China coastal waters gradually.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    North to northeast force 5 to 6.
    Mist patches.
    Moderate to rough seas.

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

    Shanwei:
    North to northeast force 6 to 7.
    Rough seas.

    South of Hong Kong and Shangchuan Dao:
    East force 5 to 6, becoming north force 7.
    Moderate to rough seas.

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

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

    Waglan Island Wind calm
      Visibility 7 Kilometres

    Shantou Wind east-southeast force 2
      Visibility 6 Kilometres in mist

    Dongsha Wind northeast force 4
      Visibility 9 Kilometres in rain

    Huangmaozhou Wind east force 3

    Macau Wind north force 2
      Visibility 5000 Metres

    Xisha Wind north-northeast force 2
      Visibility 30 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
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    Weather Forecast for Local Aviation

    Bulletin issued at 17:30 HKT 10/FEB/2018
    (Next update at 01:30 HKT 11/FEB/2018)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     STRONG WINDS AND SEV TURB.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     A COLD FRONT OVER THE NORTHERN PART OF GUANGDONG
     IS MOVING SOUTHWARDS GRADUALLY. IT IS EXPECTED
     TO REACH THE COASTAL AREAS OVERNIGHT.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1800 TO 0400 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  020/5-10
                  BEC 020/10-15
       OFFSHORE:  020/15-20, OCNL 25                   20-12
   B.   2000 FT:  010/15-20, OCNL 25                   16
   C.   5000 FT:  340/15                               10
   D.  10000 FT:  270/25                               6
   E.  18000 FT:  260/50                               MS4
   F.  24000 FT:  270/60                               MS15
   G.  30000 FT:  250/70                               MS30
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      MAINLY CLOUDY.  LOCALISED HAZE AT FIRST.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 4000 FT.
   K. VISIBILITY    : 7 KM.  TEMPO 4000 M IN HAZE.
   L. 0 DEG. C LEVEL: 16000 FT      10 DEG. C LEVEL(S) : 5000 FT
   M. TURBULENCE    : MOD TO SEV OFFSHORE AND NEAR HILLS
   N. SEA STATE     : 1.5-3.0 M     SEA TEMPERATURE    : 16 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE TO FRESH NORTHERLY WINDS, OCCASIONALLY
     STRONG OFFSHORE. SUNNY INTERVALS.=

    ===================================================================
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 10:30 HKT on 10 Feb 18

    VHHK SIGMET 1 VALID 100230/100630 VHHH- VHHK HONG KONG FIR SEV TURB OBS WI N2000 E11636 - N1742 E11448 - N2000 E11448 - N2000 E11636 FL300/400 MOV E 05KT 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 10/Feb/2018 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     17.1 C
Minimum Air Temperature                     13.7 C
Grass Minimum Temperature                   12.4 C
Relative Humidity                        69 - 82 Percent
Rainfall                                       0 mm 
Total rainfall since 1st January            62.2 mm
Against an average of                       41.5 mm

Other Stations                Min                  Max
King's Park                  13.2 C               17.6 C
Wong Chuk Hang               13.8 C               18.4 C
Ta Kwu Ling                  13.3 C               18.8 C
Lau Fau Shan                 13.2 C               17.8 C
Tai Po                       13.6 C               16.7 C
Sha Tin                      13.5 C               17.8 C
Tuen Mun                     13.4 C               17.8 C
Tseung Kwan O                12.9 C               16.4 C
Sai Kung                     13.5 C               17.2 C
Cheung Chau                  13.4 C               17.3 C
Chek Lap Kok                 14.3 C               19.2 C
Tsing Yi                     13.9 C               19.2 C
Shek Kong                    14.1 C               20.6 C
Tsuen Wan Ho Koon            12.7 C               18.1 C
Tsuen Wan Shing Mun Valley   13.5 C               20.3 C
Hong Kong Park               13.5 C               16.7 C
Shau Kei Wan                 12.8 C               16.7 C
Kowloon City                 13.1 C               18.9 C
Happy Valley                 13.8 C               17.6 C
Wong Tai Sin                 13.4 C               17.9 C
Stanley                      13.4 C               16.5 C
Kwun Tong                    12.8 C               16.5 C
Sham Shui Po                 13.8 C               19.0 C
Kai Tak Runway Park          13.9 C               16.6 C
Yuen Long Park               13.7 C               19.9 C
Tai Mei Tuk               13.0 C               18.4 C

Duration of sunshine (King's Park):              1.4 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):        14.8 C 

Yesterday's (09 Feb 2018) 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 in the
past, the hourly mean ambient gamma radiation dose rate may
vary between 0.06 and 0.3 microsievert per hour. (1
microsievert = 0.000001 sievert = 0.001 millisievert)

    2. Temporal variations are generally caused by changes in
meteorological conditions such as rainfall, wind and
barometric pressure.

    3. Spatial variations are generally caused by differences in
the radioactive content of local rock and soil.

    4. The data displayed is provisional. Only limited data
validation has been carried out.
    Climatological Information for 09 Feb
     2003copy right image | Important notices | Privacy policy Last revision date: <10 Feb 2018> 

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