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Bulletin issued at 16:02 HKT 18/Feb/2018

At 4 p.m. at the Hong Kong Observatory the air temperature was 20 degrees Celsius and the relative humidity 76 per cent.
During the past hour the mean UV Index recorded at King's Park was 1. The intensity of UV radiation was low.

The air temperatures at other places were:

King's Park 20 degrees;
Wong Chuk Hang 21 degrees;
Ta Kwu Ling 21 degrees;
Lau Fau Shan 20 degrees;
Tai Po 19 degrees;
Sha Tin 20 degrees;
Tuen Mun 21 degrees;
Tseung Kwan O 19 degrees;
Sai Kung 19 degrees;
Cheung Chau 18 degrees;
Chek Lap Kok 22 degrees;
Tsing Yi 21 degrees;
Shek Kong 22 degrees;
Tsuen Wan Ho Koon 21 degrees;
Tsuen Wan Shing Mun Valley 21 degrees;
Hong Kong Park 20 degrees;
Shau Kei Wan 18 degrees;
Kowloon City 20 degrees;
Happy Valley 20 degrees;
Wong Tai Sin 20 degrees;
Stanley 19 degrees;
Kwun Tong 20 degrees;
Sham Shui Po 21 degrees;
Kai Tak Runway Park 19 degrees;
Yuen Long Park 22 degrees;
Tai Mei Tuk 19 degrees.


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


Climatological Information for 18 Feb

Regional Weather in Hong Kong

Information on Tropical Cyclones

Hong Kong Climatology


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Bulletin updated at 16:15 HKT 18/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. Humid and misty in the morning and at night tomorrow. Sunny intervals during the day. Temperatures will range between 17 and 22 degrees. Light to moderate easterly winds.

Outlook : Mild and humid on Tuesday with sunny periods during the day. Cooler in the middle and latter parts of this week.


(The above forecast period is valid up to 23:59 HKT tomorrow, 19/02/2018; 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 09:00 HKT 18/Feb/2018

N0 WARNING.

GENERAL SITUATION AT 172100 UTC:
AN EASTERLY AIRSTREAM IS AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 180100 UTC:

HONG KONG= E 5-6, UP TO 7 AT FIRST. DOWN TO 4000 M IN MIST OR RAIN PATCHES. SEA UP TO 4 M. SWELL E UP TO 2 M. TEMP 20-18 C. =
KWANGTUNG= E 5-6, UP TO 7 IN E. DOWN TO 4000 M IN MIST OR RAIN PATCHES. SEA 2-4 M. SWELL E 2-3 M. =
TAIWAN STRAIT= NE 6-7, 4-5 LATER. DOWN TO 1000 M IN MIST PATCHES. SEA 3-4 M, 2 M LATER. SWELL NE 2-3 M. =
BASHI= E TO NE 6-7. RAIN PATCHES. SEA 3-4 M. SWELL NE 2-3 M. =
PRATAS= E 6-7. RAIN PATCHES. SEA 3-4 M. SWELL NE 2-3 M. =
BALINTANG= E TO NE 6-7. RAIN PATCHES. SEA 3-4 M. SWELL NE 2-3 M. =
SCARBOROUGH= E TO NE 4-5, OCNL 6. FINE. SEA UP TO 3 M. SWELL NE 2-3 M. =
PARACEL= E 4-5, UP TO 6 AT FIRST. FINE. SEA 2 M, UP TO 3 M AT FIRST. SWELL NE 2-3 M. =
TONKIN= E TO SE 4. DOWN TO 4000 M IN MIST OR RAIN PATCHES. SWELL E UP TO 2 M. =
DANANG= E 4-5. FINE. SEA UP TO 2 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 16:30 HKT 18/Feb/2018

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 4:30 p.m. on 18 February 2018

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

    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, occasionally force 6.
    Mist patches.
    Moderate to rough seas.

    Nan'ao and Shanwei:
    East force 5 to 6.
    Moderate to rough seas.

    South of Hong Kong:
    East force 4 to 5, occasionally force 6.
    Moderate to rough seas.

    Shangchuan Dao:
    East force 4 to 5.
    Moderate seas.

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

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

    Waglan Island Wind northeast force 3
      Visibility 7 Kilometres

    Shantou Wind south-southeast force 2
      Visibility 25 Kilometres

    Dongsha Wind east-northeast force 4
      Visibility 10 Kilometres

    Huangmaozhou Wind east force 5

    Macau Wind east force 1
      Visibility 9 Kilometres

    Xisha Wind east force 2
      Visibility 19 Kilometres

  • Explanation of Seas or Sea Waves
  • Explanation of Swells
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  • 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 09:30 HKT 18/FEB/2018
    (Next update at 17:30 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 SOUTH
     CHINA COASTAL AREAS.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1000 TO 2000 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  090/10-15
       OFFSHORE:  090/20-25 OCNL 30                    17-21
   B.   2000 FT:  110/15-20 OCNL 25                    16
   C.   5000 FT:  200/15                               13
   D.  10000 FT:  260/25                               5
   E.  18000 FT:  240/30                               MS4
   F.  24000 FT:  250/45                               MS14
   G.  30000 FT:  270/55                               MS30
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      1500-2400 FT
   I. WEATHER       : 
      MAINLY CLOUDY. ONE OR TWO LIGHT RAIN PATCHES AT
      FIRST. SUNNY INTERVALS IN THE AFTERNOON.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1500 FT  SCT 2500 FT
   K. VISIBILITY    : 8 KM.  TEMPO 4000 M IN RAIN.
   L. 0 DEG. C LEVEL: 16000 FT      10 DEG. C LEVEL(S) : 7600 FT
   M. TURBULENCE    : MOD TO SEV OFFSHORE AND  NEAR HILLS
   N. SEA STATE     : 3.0-4.5 M     SEA TEMPERATURE    : 16 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE EASTERLY WINDS.  MAINLY CLOUDY.
     LOCALISED 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 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 18/Feb/2018 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     20.2 C
Minimum Air Temperature                     16.6 C
Grass Minimum Temperature                   16.3 C
Relative Humidity                        72 - 96 Percent
Rainfall                                      trace 
Total rainfall since 1st January            62.2 mm
Against an average of                       57.6 mm

Other Stations                Min                  Max
King's Park                  16.0 C               19.3 C
Wong Chuk Hang               15.2 C               19.0 C
Ta Kwu Ling                  14.5 C               19.5 C
Lau Fau Shan                 15.9 C               21.3 C
Tai Po                       16.1 C               18.2 C
Sha Tin                      16.1 C               19.4 C
Tuen Mun                     16.6 C               21.1 C
Tseung Kwan O                15.6 C               17.7 C
Sai Kung                     15.9 C               17.2 C
Cheung Chau                  15.5 C               18.6 C
Chek Lap Kok                 17.6 C               21.2 C
Tsing Yi                     16.4 C               19.8 C
Shek Kong                    15.1 C               21.0 C
Tsuen Wan Ho Koon            15.8 C               19.6 C
Tsuen Wan Shing Mun Valley   15.9 C               19.4 C
Hong Kong Park               16.4 C               19.1 C
Shau Kei Wan                 15.7 C               18.7 C
Kowloon City                 15.7 C               20.2 C
Happy Valley                 15.9 C               19.4 C
Wong Tai Sin                 16.0 C               18.9 C
Stanley                      16.2 C               17.8 C
Kwun Tong                    15.4 C               19.9 C
Sham Shui Po                 16.8 C               20.8 C
Kai Tak Runway Park          16.4 C               18.1 C
Yuen Long Park               15.0 C               21.1 C
Tai Mei Tuk               15.8 C               18.6 C

Duration of sunshine (King's Park):              2.7 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 5.
Sea surface temperature (Waglan Island):        18.3 C 

Yesterday's (17 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 17 Feb
     2003copy right image | Important notices | Privacy policy Last revision date: <18 Feb 2018> 

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