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Bulletin issued at 15:02 HKT 20/Feb/2018

At 3 p.m. at the Hong Kong Observatory the air temperature was 22 degrees Celsius and the relative humidity 83 per cent.
During the past hour the mean UV Index recorded at King's Park was 3. The intensity of UV radiation was moderate.

The air temperatures at other places were:

King's Park 22 degrees;
Wong Chuk Hang 23 degrees;
Ta Kwu Ling 24 degrees;
Lau Fau Shan 23 degrees;
Tai Po 22 degrees;
Tuen Mun 24 degrees;
Tseung Kwan O 20 degrees;
Sai Kung 21 degrees;
Cheung Chau 21 degrees;
Chek Lap Kok 23 degrees;
Tsing Yi 24 degrees;
Shek Kong 25 degrees;
Tsuen Wan Ho Koon 23 degrees;
Tsuen Wan Shing Mun Valley 24 degrees;
Hong Kong Park 22 degrees;
Shau Kei Wan 20 degrees;
Kowloon City 22 degrees;
Happy Valley 23 degrees;
Wong Tai Sin 23 degrees;
Stanley 21 degrees;
Kwun Tong 21 degrees;
Sham Shui Po 23 degrees;
Kai Tak Runway Park 20 degrees;
Yuen Long Park 25 degrees;
Tai Mei Tuk 23 degrees.


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


Climatological Information for 20 Feb

Regional Weather in Hong Kong

Information on Tropical Cyclones

Hong Kong Climatology


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Bulletin updated at 14:45 HKT 20/Feb/2018

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

A humid easterly airstream is affecting the coastal areas of Guangdong.

Weather forecast for this afternoon and tonight

Mainly cloudy with one or two light rain patches. Visibility rather low in some areas. Moderate easterly winds.

Outlook : Cloudy in the next couple of days. A few rain patches on Thursday. Temperatures falling appreciably later. Rather cool on Friday morning.


(The above forecast period is valid up to 23:59 HKT today, 20/02/2018; 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 20/Feb/2018

N0 WARNING.

GENERAL SITUATION AT 192100 UTC:
AN EASTERLY AIRSTREAM IS AFFECTING THE FORECAST AREAS. TROUGH 25N 105E 24N 112E 28N 119E QSTNR.

MARINE FORECAST FOR 24 HOURS FROM 200100 UTC:

HONG KONG= E 3-4. DOWN TO 500 M IN FOG OR RAIN PATCHES. TEMP 25-17 C. =
KWANGTUNG= E 4, OCNL 5. DOWN TO 500 M IN FOG OR RAIN PATCHES. SEA UP TO 2 M. =
TAIWAN STRAIT= NE 5-6. DOWN TO 4000 M IN MIST OR RAIN PATCHES. SEA 2-3 M. SWELL NE 2 M LATER. =
BASHI= SE 4-5. RAIN PATCHES. SEA UP TO 2 M. =
PRATAS= E 4, OCNL 5. RAIN PATCHES. SEA UP TO 2 M. =
BALINTANG= SE 4-5. RAIN PATCHES. SEA UP TO 2 M. =
SCARBOROUGH= NE 4, OCNL 5. FINE. SEA UP TO 2 M. =
PARACEL= E 4, OCNL 5. DOWN TO 500 M IN FOG OR RAIN PATCHES IN N. SEA UP TO 2 M. =
TONKIN= E TO SE 4. DOWN TO 500 M IN FOG OR RAIN PATCHES. =
DANANG= E TO SE 4, OCNL 5. DOWN TO 500 M IN FOG OR RAIN PATCHES IN N. SEA 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
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    • 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 12:50 HKT 20/Feb/2018

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 12:50 p.m. on 20 February 2018

    Warnings:
    Strong winds in Nan'ao and Shanwei. Fog in Shangchuan Dao.

    Weather Situation:
    A humid easterly airstream is affecting the south China coastal waters.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    East force 4, up to force 5 later.
    A few light rain patches, visibility rather low in some areas.
    Moderate seas.

    Nan'ao and Shanwei:
    East to northeast force 4 to 5, up to force 6 later.
    Moderate seas, becoming rough later.

    South of Hong Kong:
    East force 4 to 5.
    Moderate seas.

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

    Outlook for the next 48 hours
    Easterly winds of force 5 to 6, becoming northeasterly winds of up to force 7 later. Fog patches at first.

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

    Waglan Island Wind east-northeast force 3
      Visibility 9 Kilometres

    Shantou Wind east-northeast force 2
      Visibility 14 Kilometres

    Dongsha Wind northeast force 2
      Visibility 10 Kilometres

    Huangmaozhou Wind east-northeast force 2

    Macau Wind south-southeast force 1
      Visibility 6 Kilometres

    Xisha Wind northeast force 1
      Visibility 30 Kilometres

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

    Bulletin issued at 09:30 HKT 20/FEB/2018
    (Next update at 17:30 HKT 20/FEB/2018)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     NIL.
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:  100/5-10
       OFFSHORE:  080/10-15                            20-26
   B.   2000 FT:  170/10-15                            19
   C.   5000 FT:  200/10                               14
   D.  10000 FT:  270/20                               7
   E.  18000 FT:  260/35                               MS5
   F.  24000 FT:  260/40                               MS19
   G.  30000 FT:  250/60                               MS30
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      200-1300 FT
   I. WEATHER       : 
      MAINLY CLOUDY WITH A FEW LIGHT RAIN PATCHES AT
      FIRST. SUNNY INTERVALS DURING THE DAY.
      LOCALIZED MIST/HAZE.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 2000 FT  SCT 3500 FT.
   K. VISIBILITY    : 7 KM.  TEMPO 3000 M IN MIST/HAZE.
   L. 0 DEG. C LEVEL: 16000 FT      10 DEG. C LEVEL(S) : 8000 FT
   M. TURBULENCE    : NIL
   N. SEA STATE     : 1.0-1.5 M     SEA TEMPERATURE    : 17 DEG
IV.  FURTHER OUTLOOK: 
     LIGHT TO MODERATE EASTERLY WINDS.  MAINLY CLOUDY.  LOCALIZED 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 20/Feb/2018 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     24.4 C
Minimum Air Temperature                     19.5 C
Grass Minimum Temperature                   17.6 C
Relative Humidity                        77 - 86 Percent
Rainfall                                      Trace 
Total rainfall since 1st January            62.2 mm
Against an average of                       62.6 mm

Other Stations                Min                  Max
King's Park                  18.8 C               24.7 C
Wong Chuk Hang               18.4 C               24.9 C
Ta Kwu Ling                  17.5 C               26.8 C
Lau Fau Shan                 17.5 C               24.4 C
Tai Po                       17.2 C               22.8 C
Sha Tin                      17.8 C               24.9 C
Tuen Mun                     18.3 C               25.4 C
Tseung Kwan O                17.2 C               22.9 C
Sai Kung                     17.3 C               22.0 C
Cheung Chau                  17.5 C               23.4 C
Chek Lap Kok                 18.1 C               26.4 C
Tsing Yi                     18.5 C               25.7 C
Shek Kong                    18.8 C               26.4 C
Tsuen Wan Ho Koon            18.1 C               25.5 C
Tsuen Wan Shing Mun Valley   18.7 C               26.1 C
Hong Kong Park               18.9 C               24.1 C
Shau Kei Wan                 17.2 C               22.7 C
Kowloon City                 18.2 C               24.7 C
Happy Valley                 19.4 C               26.2 C
Wong Tai Sin                 18.5 C               25.1 C
Stanley                      17.2 C               23.4 C
Kwun Tong                    19.0 C               24.3 C
Sham Shui Po                 19.2 C               25.9 C
Kai Tak Runway Park          17.6 C               22.4 C
Yuen Long Park               18.3 C               26.5 C
Tai Mei Tuk               17.3 C               24.8 C

Duration of sunshine (King's Park):              2.8 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):        16.6 C 

Yesterday's (19 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 19 Feb
     2003copy right image | Important notices | Privacy policy Last revision date: <20 Feb 2018> 

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