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Bulletin issued at 04:02 HKT 07/Feb/2019

At 4 a.m. at the Hong Kong Observatory the air temperature was 22 degrees Celsius and the relative humidity 89 per cent.

The air temperatures at other places were:

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


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


Climatological Information for 7 Feb

Regional Weather in Hong Kong

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Hong Kong Climatology


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Bulletin updated at 03:45 HKT 07/Feb/2019

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

A humid maritime airstream is affecting the coast of Guangdong.

Weather forecast for today

Mainly cloudy. Fog and light rain patches in the morning and at night. The minimum temperature will be about 21 degrees. Warm with sunny periods during the day. The maximum temperature will be around 25 degrees. Light to moderate southeasterly winds.

Outlook : Sunny periods on Friday. There will be fog in the morning and at night. Windier and slightly cooler over the weekend and early next week.


(The above forecast period is valid up to 23:59 HKT today, 07/02/2019; 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 06/Feb/2019

N0 WARNING.

GENERAL SITUATION AT 060900 UTC:
A SOUTHEASTERLY AIRSTREAM IS AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 061300 UTC:

HONG KONG= SE 3-4. DOWN TO 500 M IN FOG OR LGT RAIN PATCHES. TEMP 21-25 C. =
KWANGTUNG= S TO SE 4-5. DOWN TO 500 M IN FOG OR LGT RAIN PATCHES. SEA UP TO 2 M. =
TAIWAN STRAIT= S TO SE 3-4. DOWN TO 500 M IN FOG OR LGT RAIN PATCHES. =
BASHI= E TO SE 4-5. RAIN PATCHES. SEA UP TO 2 M. =
PRATAS= E TO SE 4-5. CLD. SEA UP TO 2 M. =
BALINTANG= E TO SE 4-5. FINE. SEA UP TO 2 M. =
SCARBOROUGH= E TO NE 4-5. FINE. SEA UP TO 2 M. =
PARACEL= S TO SE 4-5. CLD. SEA UP TO 2 M. =
TONKIN= S TO SE 4-5, OCNL 6. DOWN TO 4000 M IN MIST OR LGT RAIN PATCHES. SEA UP TO 3 M. =
DANANG= S TO SE 4-5. DOWN TO 4000 M IN MIST OR LGT RAIN PATCHES. 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
  • Tidal Information

    • SOUTH CHINA COASTAL WATERS
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    South China Coastal Waters

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    Bulletin issued at 03:30 HKT 07/Feb/2019

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 3:30 a.m. on 07 February 2019

    Warnings:
    Fog in all areas.

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

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    Southeast force 3 to 4, occasionally force 5.
    A few light rain and fog patches.
    Slight to moderate seas.

    Nan'ao and Shanwei:
    Southeast force 4 to 5.
    Fog patches.
    Moderate seas.

    South of Hong Kong and Shangchuan Dao:
    South to southeast force 4 to 5.
    Fog patches.
    Moderate seas.

    Outlook for the next 48 hours
    South to southeasterly winds of force 4 to 5, becoming east to northeasterly winds of force 6 to 7. Fog patches.

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

    Waglan Island Wind south-southwest force 1
      Visibility 13 Kilometres

    Shantou Wind north-northeast force 1
      Visibility 3500 Metres in mist

    Dongsha Wind east force 1
      Visibility 10 Kilometres

    Huangmaozhou Wind southwest force 2

    Macau Wind south force 2
      Visibility 7 Kilometres

    Xisha Wind south 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 01:30 HKT 07/FEB/2019
    (Next update at 9:00-9:30 HKT 07/FEB/2019)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     FOG.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     A SOUTHEASTERLY AIRSTREAM IS AFFECTING THE SOUTH
     CHINA COASTAL AREAS.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 0200 TO 1200 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  140/5-10
       OFFSHORE:  160/10-15                            21-24
   B.   2000 FT:  180/15-20                            17
   C.   5000 FT:  230/20                               14
   D.  10000 FT:  260/30                               10
   E.  18000 FT:  260/50                               MS5
   F.  24000 FT:  290/60                               MS15
   G.  30000 FT:  290/70                               MS30
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL
   I. WEATHER       : 
      MAINLY CLOUDY WITH A FEW LIGHT RAIN PATCHES.
      LOCALISED MIST/FOG.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1000 FT SCT 3500 FT
   K. VISIBILITY    : 7 KM. TEMPO 2000 M IN MIST/RAIN. TEMPO 800 M IN FOG
   L. 0 DEG. C LEVEL: 16500 FT      10 DEG. C LEVEL(S) : 6600, 6800, 10000 FT
   M. TURBULENCE    : MOD NEAR HILLS.
   N. SEA STATE     : 1.0-1.5 M     SEA TEMPERATURE    : 19 DEG
IV.  FURTHER OUTLOOK: 
     LIGHT TO MODERATE SOUTHEASTERLY WINDS. SUNNY
     PERIODS, A FEW LIGHT RAIN PATCHES LATER.
     LOCALIZED MIST/FOG .=

    ===================================================================
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.

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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.

    There is no Significant Weather Information (SIGMET)

    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 07/Feb/2019 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     24.9 C
Minimum Air Temperature                     20.5 C
Grass Minimum Temperature                   18.6 C
Relative Humidity                        77 - 92 Percent
Rainfall                                       0 mm 
Total rainfall since 1st January             4.7 mm
Against an average of                       32.5 mm

Other Stations                Min                  Max
King's Park                  19.7 C               25.3 C
Wong Chuk Hang               20.1 C               25.2 C
Ta Kwu Ling                  19.0 C               27.2 C
Lau Fau Shan                 18.9 C               28.3 C
Tai Po                       19.5 C               25.6 C
Sha Tin                      19.7 C               26.7 C
Tuen Mun                     20.4 C               26.5 C
Tseung Kwan O                19.5 C               25.6 C
Sai Kung                     19.8 C               23.3 C
Cheung Chau                  19.5 C               25.8 C
Chek Lap Kok                 21.1 C               26.6 C
Tsing Yi                     20.4 C               26.4 C
Shek Kong                    18.2 C               27.7 C
Tsuen Wan Ho Koon            19.8 C               25.6 C
Tsuen Wan Shing Mun Valley   20.6 C               27.1 C
Hong Kong Park               19.6 C               24.2 C
Shau Kei Wan                 19.3 C               24.0 C
Kowloon City                 19.4 C               27.1 C
Happy Valley                 20.1 C               25.3 C
Wong Tai Sin                 20.1 C               26.8 C
Stanley                      19.3 C               23.6 C
Kwun Tong                    19.8 C               26.2 C
Sham Shui Po                 20.7 C               26.8 C
Kai Tak Runway Park          19.5 C               23.4 C
Yuen Long Park               19.0 C               27.3 C
Tai Mei Tuk               19.6 C               27.1 C

Duration of sunshine (King's Park):              3.7 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.
 

Yesterday's (06 Feb 2019) average ambient gamma radiation
dose rate taken outdoors in Hong Kong ranged from 0.09 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                           0.09
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                           0.13
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 06 Feb
     2003copy right image | Important notices | Privacy policy Last revision date: <07 Feb 2019> 

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