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Bulletin issued at 22:02 HKT 17/Feb/2018

At 10 p.m. at the Hong Kong Observatory the air temperature was 17 degrees Celsius and the relative humidity 81 per cent.

The air temperatures at other places were:

King's Park 17 degrees;
Wong Chuk Hang 17 degrees;
Ta Kwu Ling 17 degrees;
Lau Fau Shan 17 degrees;
Tai Po 17 degrees;
Sha Tin 17 degrees;
Tuen Mun 18 degrees;
Tseung Kwan O 16 degrees;
Sai Kung 17 degrees;
Cheung Chau 16 degrees;
Chek Lap Kok 18 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 16 degrees;
Kowloon City 17 degrees;
Happy Valley 17 degrees;
Wong Tai Sin 17 degrees;
Stanley 17 degrees;
Kwun Tong 16 degrees;
Sham Shui Po 17 degrees;
Kai Tak Runway Park 17 degrees;
Yuen Long Park 18 degrees;
Tai Mei Tuk 16 degrees.


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


Climatological Information for 17 Feb

Regional Weather in Hong Kong

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Bulletin updated at 21:45 HKT 17/Feb/2018

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

An easterly airstream is affecting the coastal areas of Guangdong.

Weather forecast for tonight and tomorrow

Mainly cloudy. One or two light rain patches tonight and tomorrow morning. Sunny intervals tomorrow with temperatures ranging between 17 and 21 degrees. Moderate to fresh easterly winds, occasionally strong offshore and on high ground at first.

Outlook : It will be humid in the morning and at night in the following couple of days. There will be sunny intervals during the day.


(The above forecast period is valid up to 23:59 HKT tomorrow, 18/02/2018; 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 21:00 HKT 17/Feb/2018

GALE WARNING AREAS: TAIWAN STRAIT, BASHI AND BALINTANG.

GENERAL SITUATION AT 170900 UTC:
AN EASTERLY AIRSTREAM IS AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 171300 UTC:

HONG KONG= E 5-6, UP TO 7 AT FIRST. DOWN TO 1000 M IN MIST OR LGT RAIN PATCHES. SEA UP TO 4 M. SWELL E UP TO 2 M. TEMP 17-21 C. =
KWANGTUNG= E 5-6, UP TO 7 IN E AT FIRST. DOWN TO 1000 M IN MIST OR RAIN PATCHES. SEA UP TO 4 M. SWELL E 2 M. =
TAIWAN STRAIT= NE 6-7, UP TO 8 AT FIRST. CLD. DOWN TO 1000 M IN MIST PATCHES LATER. SEA UP TO 6 M. SWELL NE 2-3 M. =
BASHI= E TO NE 6-7, UP TO 8 AT FIRST. RAIN PATCHES. SEA UP TO 6 M. SWELL NE 2-3 M. =
PRATAS= E TO NE 6-7. RAIN PATCHES. SEA 3-4 M. SWELL NE 2-3 M. =
BALINTANG= E TO NE 6-7, UP TO 8 AT FIRST. RAIN PATCHES. SEA UP TO 6 M. SWELL NE 2-3 M. =
SCARBOROUGH= E TO NE 5-6, OCNL 7. FINE. SEA UP TO 4 M. SWELL NE 2 M. =
PARACEL= E 4-5, OCNL 6. DOWN TO 500 M IN FOG PATCHES IN N. SEA UP TO 3 M. SWELL NE 2 M. =
TONKIN= E TO SE 4. DOWN TO 500 M IN FOG OR RAIN PATCHES. =
DANANG= E 4-5. DOWN TO 500 M IN FOG PATCHES. SEA UP TO 2 M. SWELL 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 17/Feb/2018

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 7:30 p.m. on 17 February 2018

    Warnings:
    Strong winds in all areas.

    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 5 to 6, up to force 7 at first.
    A few light rain patches and mist.
    Moderate to rough seas.

    Nan'ao, Shanwei and South of Hong Kong:
    East force 5 to 6, up to force 7 at first.
    Moderate to rough seas.

    Shangchuan Dao:
    East force 5 to 6.
    Moderate to rough seas.

    Outlook for the next 48 hours
    Easterly winds of force 4 to 5, occasionally force 6. Fog patches.

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

    Waglan Island Wind east-northeast force 5
      Visibility 8 Kilometres

    Shantou Wind east force 3
      Visibility 19 Kilometres

    Dongsha Wind east-northeast force 4
      Visibility 10 Kilometres

    Huangmaozhou Wind east force 7

    Macau Wind east force 3
      Visibility 9 Kilometres

    Xisha Wind east-northeast force 2
      Visibility 19 Kilometres

  • Explanation of Seas or Sea Waves
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  • Map showing forecast areas
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    • WEATHER FORECAST FOR LOCAL AVIATION
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    Weather Forecast for Local Aviation

    Bulletin issued at 17:30 HKT 17/FEB/2018
    (Next update at 01:30 HKT 18/FEB/2018)
    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 COASTAL
     AREAS OF GUANGDONG.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1800 TO 0400 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  100/10-15
       OFFSHORE:  100/20-25                            19-17
   B.   2000 FT:  140/20-25                            15
   C.   5000 FT:  170/15                               15
   D.  10000 FT:  250/25                               7
   E.  18000 FT:  260/35                               MS5
   F.  24000 FT:  260/50                               MS16
   G.  30000 FT:  270/60                               MS30
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      2400 - 3600 FT.
   I. WEATHER       : 
      MAINLY CLOUDY.  A FEW LIGHT RAIN AND MIST
      PATCHES.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1500 FT  SCT 3000 FT  BKN 5000 FT.
   K. VISIBILITY    : 9 KM.  TEMPO 3000 M IN MIST/RAIN.
   L. 0 DEG. C LEVEL: 16000 FT      10 DEG. C LEVEL(S) : 7800 FT
   M. TURBULENCE    : MOD TO SEV.
   N. SEA STATE     : 2.0-3.0 M     SEA TEMPERATURE    : 16 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE EASTERLY WINDS, FRESH AT TIMES.  SUNNY
     INTERVALS.  A FEW LIGHT RAIN AND MIST PATCHES AT
     FIRST.=

    ===================================================================
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 17/Feb/2018 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     24.8 C
Minimum Air Temperature                     17.5 C
Grass Minimum Temperature                   14.9 C
Relative Humidity                        59 - 94 Percent
Rainfall                                       0 mm 
Total rainfall since 1st January            62.2 mm
Against an average of                       54.0 mm

Other Stations                Min                  Max
King's Park                  16.7 C               24.9 C
Wong Chuk Hang               14.4 C               22.9 C
Ta Kwu Ling                  11.6 C               27.7 C
Lau Fau Shan                 15.0 C               24.4 C
Tai Po                       14.8 C               27.2 C
Sha Tin                      13.7 C               27.7 C
Tuen Mun                     15.6 C               27.1 C
Tseung Kwan O                14.8 C               25.9 C
Sai Kung                     14.8 C               20.6 C
Cheung Chau                  16.3 C               26.3 C
Chek Lap Kok                 16.6 C               26.5 C
Tsing Yi                     15.6 C               25.2 C
Shek Kong                    13.7 C               27.5 C
Tsuen Wan Ho Koon            15.2 C               25.0 C
Tsuen Wan Shing Mun Valley   14.7 C               26.3 C
Hong Kong Park               16.2 C               26.8 C
Shau Kei Wan                 16.2 C               25.4 C
Kowloon City                 16.7 C               27.7 C
Happy Valley                 14.4 C               27.6 C
Wong Tai Sin                 15.7 C               27.3 C
Stanley                      15.3 C               23.8 C
Kwun Tong                    16.4 C               26.7 C
Sham Shui Po                 16.0 C               26.0 C
Kai Tak Runway Park          16.2 C               24.9 C
Yuen Long Park               13.9 C               27.2 C
Tai Mei Tuk               15.5 C               26.9 C

Duration of sunshine (King's Park):              10.2 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 7.
Sea surface temperature (Waglan Island):        16.4 C 

Yesterday's (16 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                               0.11
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 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 16 Feb
     2003copy right image | Important notices | Privacy policy Last revision date: <17 Feb 2018> 

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