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

At 7 a.m. at the Hong Kong Observatory the air temperature was 20 degrees Celsius and the relative humidity 89 per cent.

The air temperatures at other places were:

King's Park 19 degrees;
Wong Chuk Hang 18 degrees;
Ta Kwu Ling 16 degrees;
Lau Fau Shan 18 degrees;
Tai Po 18 degrees;
Sha Tin 17 degrees;
Tuen Mun 18 degrees;
Tseung Kwan O 18 degrees;
Sai Kung 18 degrees;
Cheung Chau 19 degrees;
Chek Lap Kok 19 degrees;
Tsing Yi 18 degrees;
Shek Kong 17 degrees;
Tsuen Wan Ho Koon 17 degrees;
Tsuen Wan Shing Mun Valley 17 degrees;
Hong Kong Park 19 degrees;
Shau Kei Wan 19 degrees;
Kowloon City 19 degrees;
Happy Valley 19 degrees;
Wong Tai Sin 19 degrees;
Stanley 19 degrees;
Kwun Tong 20 degrees;
Sham Shui Po 19 degrees;
Kai Tak Runway Park 19 degrees;
Yuen Long Park 17 degrees;
Tai Mei Tuk 19 degrees.


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


Climatological Information for 4 Feb

Regional Weather in Hong Kong

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Hong Kong Climatology


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Bulletin updated at 06:45 HKT 04/Feb/2019

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

Winds are weak over the coast of Guangdong. Locally, there was coastal fog this morning. Visibility over Waglan Island fell below 1000 metres. Besides, pressure over southeastern China is rising. A fresh easterly airstream is expected to reach the coast of Guangdong tonight.

Weather forecast for today

Coastal fog in the morning and sunny periods during the day. The maximum temperature will be about 25 degrees. Light winds, becoming moderate to fresh easterly winds tonight and there will be one or two light rain patches.

Outlook : Warm with occasional sunshine and coastal fog patches in the next few days. However, it will be windier at first on Lunar New Year's Day.


(The above forecast period is valid up to 23:59 HKT today, 04/02/2019; 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 03/Feb/2019

N0 WARNING.

GENERAL SITUATION AT 030900 UTC:
AN EASTERLY AIRSTREAM IS GENERALLY AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 031300 UTC:

HONG KONG= E TO SE 4, E 5 LATER. DOWN TO 500 M IN FOG OR LGT RAIN PATCHES. SEA UP TO 2 M LATER. TEMP 20-25 C. =
KWANGTUNG= E 4-5, BEC NE 6-7 IN E. DOWN TO 500 M IN FOG OR LGT RAIN PATCHES. SEA UP TO 2 M, BEC 3-4 M IN E. SWELL E UP TO 2 M. =
TAIWAN STRAIT= SE 4-5, BEC NE 6-7. DOWN TO 500 M IN FOG OR LGT RAIN PATCHES AT FIRST. SEA UP TO 2 M, BEC 3-4 M. SWELL E TO NE UP TO 2 M. =
BASHI= SE 5-6, NE 5-6 LATER. LGT RAIN PATCHES. SEA 2-3 M. SWELL E 2 M. =
PRATAS= E 4-5, NE 5-6 LATER. DOWN TO 2000 M IN MIST PATCHES AT FIRST. SEA UP TO 2 M, 3 M LATER. SWELL E 2 M. =
BALINTANG= E TO SE 5-6. LGT RAIN PATCHES. SEA 2-3 M. SWELL E 2 M. =
SCARBOROUGH= NE 4-5. FINE. SEA UP TO 2 M. SWELL E TO NE UP TO 2 M. =
PARACEL= E 4-5. DOWN TO 2000 M IN MIST PATCHES. SEA UP TO 2 M. SWELL E UP TO 2 M. =
TONKIN= E TO SE 4, OCNL 5. DOWN TO 500 M IN FOG OR LGT RAIN PATCHES. SEA UP TO 2 M. =
DANANG= E TO SE 4-5. DOWN TO 2000 M IN MIST OR LGT RAIN PATCHES. SEA UP TO 2 M. SWELL E 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.


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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 05:30 HKT 04/Feb/2019

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 5:30 a.m. on 04 February 2019

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

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

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    East to southeast force 3 to 4, becoming east force 5.
    A few light rain patches. Fog patches at first.
    Moderate seas.

    Nan'ao:
    East force 4 to 5, becoming northeast force 6 to 7.
    Moderate seas, becoming rough.

    Shanwei:
    East force 4 to 5, becoming northeast force 6.
    Moderate seas, becoming rough.

    South of Hong Kong:
    East force 4 to 5.
    Fog patches at first.
    Moderate seas.

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

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

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

    Waglan Island Wind variable force 1
      Visibility 3100 Metres

    Shantou Wind west force 1
      Visibility 1600 Metres in mist

    Dongsha Wind calm
      Visibility 10 Kilometres

    Huangmaozhou Wind west-northwest force 2

    Macau Wind west force 1
      Visibility 4900 Metres in mist

    Xisha Wind east force 2
      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 04/FEB/2019
    (Next update at 9:00-9:30 HKT 04/FEB/2019)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     FOG.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     WINDS ARE LIGHT OVER THE COAST OF GUANGDONG.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 0200 TO 1200 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  VRB/5                                19-23
   B.   2000 FT:  010/5                                18
   C.   5000 FT:  080/5-10                             13
   D.  10000 FT:  250/25                               12
   E.  18000 FT:  260/40                               MS4
   F.  24000 FT:  240/60                               MS18
   G.  30000 FT:  260/60                               MS28
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL
   I. WEATHER       : 
      MAINLY CLOUDY. LOCALIZED MIST/FOG.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 2500 FT SCT 4000 FT
   K. VISIBILITY    : 7 KM. TEMPO 3000 M IN MIST. TEMPO 800 M IN FOG.
   L. 0 DEG. C LEVEL: 16000 FT      10 DEG. C LEVEL(S) : 6600,7200,11000 FT
   M. TURBULENCE    : NIL
   N. SEA STATE     : 1.0-1.5 M     SEA TEMPERATURE    : 19 DEG
IV.  FURTHER OUTLOOK: 
     LIGHT WINDS, BECOMING MODERATE EASTERLY WINDS
     LATER. SUNNY PERIODS. LOCALIZED MIST/HAZE.=

    ===================================================================
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)

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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 04/Feb/2019 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     25.3 C
Minimum Air Temperature                     19.6 C
Grass Minimum Temperature                   17.8 C
Relative Humidity                        69 - 91 Percent
Rainfall                                      Trace 
Total rainfall since 1st January             4.7 mm
Against an average of                       27.8 mm

Other Stations                Min                  Max
King's Park                  18.8 C               25.8 C
Wong Chuk Hang               18.4 C               25.1 C
Ta Kwu Ling                  18.6 C               27.8 C
Lau Fau Shan                 17.8 C               25.4 C
Tai Po                       18.5 C               23.9 C
Sha Tin                      18.2 C               26.0 C
Tuen Mun                     18.9 C               26.7 C
Tseung Kwan O                18.2 C               25.8 C
Sai Kung                     18.7 C               23.1 C
Cheung Chau                  18.5 C               26.2 C
Chek Lap Kok                 19.4 C               26.4 C
Tsing Yi                     19.4 C               26.0 C
Shek Kong                    18.4 C               27.1 C
Tsuen Wan Ho Koon            18.6 C               26.0 C
Tsuen Wan Shing Mun Valley   19.0 C               27.8 C
Hong Kong Park               19.0 C               25.0 C
Shau Kei Wan                 18.9 C               24.3 C
Kowloon City                 18.8 C               27.6 C
Happy Valley                 18.8 C               26.9 C
Wong Tai Sin                 19.4 C               26.8 C
Stanley                      18.9 C               23.5 C
Kwun Tong                    18.9 C               27.0 C
Sham Shui Po                 19.5 C               26.0 C
Kai Tak Runway Park          19.3 C               23.7 C
Yuen Long Park               18.5 C               27.8 C
Tai Mei Tuk               18.8 C               27.1 C

Duration of sunshine (King's Park):              7.8 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 8.
 

Yesterday's (03 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 03 Feb
     2003copy right image | Important notices | Privacy policy Last revision date: <04 Feb 2019> 

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