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Bulletin issued at 01:02 HKT 05/Feb/2019

At 1 a.m. at the Hong Kong Observatory the air temperature was 20 degrees Celsius and the relative humidity 87 per cent.

The air temperatures at other places were:

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


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


Climatological Information for 5 Feb

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Bulletin updated at 00:45 HKT 05/Feb/2019

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

Locally, winds were weak for most of the day yesterday and there were coastal fog in the morning. Visibility at Waglan Island once fell below 1000 metres. It was warm with sunny periods during the day. Temperatures over most parts of the territory rose to 25 degrees or above. With a fresh easterly airstream affected the coast of Guangdong, it was windier over the region last night. A humid maritime airstream is expected to affect the south China coast in the middle and latter parts of this week. It will be warm over the region and there will be fog in the morning and at night.

Weather forecast for Hong Kong

Mainly cloudy. One or two light rain patches and relatively low visibility in the morning and at night. Sunny periods during the day. Temperatures will range between 19 and 23 degrees. Moderate easterly winds, fresh offshore at first.

Outlook : Warm with sunny periods for the rest of this week and there will be coastal fog in the morning and at night.


(The above forecast period is valid up to 23:59 HKT today, 05/02/2019; 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 04/Feb/2019

GALE WARNING AREA: TAIWAN STRAIT.

GENERAL SITUATION AT 040900 UTC:
AN EASTERLY AIRSTREAM IS AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 041300 UTC:

HONG KONG= E TO SE 4-5, OCNL 6. DOWN TO 2000 M IN MIST OR LGT RAIN PATCHES. SEA UP TO 3 M. TEMP 19-23 C. =
KWANGTUNG= E TO SE 4-5, E TO NE UP TO 7 IN E. DOWN TO 500 M IN FOG OR LGT RAIN PATCHES. SEA 2-4 M. SWELL E UP TO 2 M. =
TAIWAN STRAIT= NE 6-7, 8 AT FIRST. LGT RAIN PATCHES. DOWN TO 4000 M IN MORNING MIST PATCHES. SEA 3-4 M, 6 M AT FIRST. SWELL E TO NE 2-3 M. =
BASHI= E TO NE 5-6, OCNL 7. LGT RAIN PATCHES. SEA UP TO 4 M. SWELL E TO NE 2-3 M. =
PRATAS= E TO NE 5-6, OCNL 7. LGT RAIN PATCHES. SEA UP TO 4 M. SWELL E TO NE 2 M. =
BALINTANG= E 5-6. LGT RAIN PATCHES. SEA 2-3 M. SWELL E TO NE 2 M. =
SCARBOROUGH= E TO NE 4-5, OCNL 6. FINE. SEA UP TO 3 M. SWELL NE UP TO 2 M. =
PARACEL= E TO SE 4-5, OCNL 6. DOWN TO 500 M IN FOG PATCHES. SEA UP TO 3 M. SWELL E UP TO 2 M. =
TONKIN= E TO SE 4-5. DOWN TO 500 M IN FOG OR LGT RAIN PATCHES. SEA UP TO 2 M. =
DANANG= E TO SE 4-5. DOWN TO 500 M IN FOG 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 23:30 HKT 04/Feb/2019

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 11:30 p.m. on 04 February 2019

    Warnings:
    Strong winds in Hong Kong adjacent waters, Nan'ao, Shanwei and south of Hong Kong. Fog in 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 4 to 5, occasionally force 6.
    A few light rain and mist patches.
    Moderate to rough seas.

    Nan'ao and Shanwei:
    East to northeast force 5 to 6, occasionally force 7.
    Moderate to rough seas.

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

    Shangchuan Dao:
    East 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. Fog patches.

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

    Waglan Island Wind east-northeast force 5
      Visibility 6 Kilometres

    Shantou Wind east-northeast force 2
      Visibility 18 Kilometres

    Dongsha Wind north-northeast force 3
      Visibility 10 Kilometres

    Huangmaozhou Wind east force 6

    Macau Wind south-southeast force 2
      Visibility 6 Kilometres

    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 05/FEB/2019
    (Next update at 9:00-9:30 HKT 05/FEB/2019)
    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 0200 TO 1200 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  090/10-15, OCNL 20
       OFFSHORE:  090/15-20, OCNL 25                   19-24
   B.   2000 FT:  120/15-20                            17
   C.   5000 FT:  220/10                               13
   D.  10000 FT:  240/30                               11
   E.  18000 FT:  240/55                               MS5
   F.  24000 FT:  240/70                               MS17
   G.  30000 FT:  260/75                               MS29
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      MAINLY CLOUDY. A FEW LIGHT RAIN PATCHES AND LOCALIZED MIST
      IN THE MORNING. SUNNY PERIODS DURING THE DAY,
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1500 FT.
   K. VISIBILITY    : 8 KM. TEMPO 4000 M IN MIST.
   L. 0 DEG. C LEVEL: 15000 FT      
      10 DEG. C LEVEL(S) : 6800, 8600, 10200 FT
   M. TURBULENCE    : MOD TO SEV OFFSHORE. MOD NEAR HILLS.
   N. SEA STATE     : 1.5-2.5 M     SEA TEMPERATURE    : 19 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE EASTERLY WINDS, FRESH OFFSHORE. SUNNY PERIODS.
     A FEW LIGHT RAIN PATCHES AND LOCALIZED MIST AT NIGHT.=

    ===================================================================
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 00:40 HKT 05/Feb/2019 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     25.5 C
Minimum Air Temperature                     19.5 C
Grass Minimum Temperature                   17.2 C
Relative Humidity                        69 - 91 Percent
Rainfall                                       0 mm 
Total rainfall since 1st January             4.7 mm
Against an average of                       28.4 mm

Other Stations                Min                  Max
King's Park                  18.8 C               26.1 C
Wong Chuk Hang               17.3 C               25.9 C
Ta Kwu Ling                  15.7 C               28.2 C
Lau Fau Shan                 17.6 C               24.7 C
Tai Po                       17.8 C               25.2 C
Sha Tin                      16.8 C               26.5 C
Tuen Mun                     18.2 C               27.1 C
Tseung Kwan O                17.6 C               26.6 C
Sai Kung                     17.7 C               23.9 C
Cheung Chau                  18.4 C               26.2 C
Chek Lap Kok                 18.9 C               25.8 C
Tsing Yi                     18.3 C               26.5 C
Shek Kong                    16.5 C               27.4 C
Tsuen Wan Ho Koon            17.5 C               26.0 C
Tsuen Wan Shing Mun Valley   17.5 C               27.3 C
Hong Kong Park               18.8 C               26.0 C
Shau Kei Wan                 18.3 C               25.2 C
Kowloon City                 18.8 C               28.1 C
Happy Valley                 17.5 C               27.2 C
Wong Tai Sin                 18.5 C               28.0 C
Stanley                      18.1 C               23.9 C
Kwun Tong                    18.3 C               26.7 C
Sham Shui Po                 18.9 C               26.6 C
Kai Tak Runway Park          18.7 C               25.0 C
Yuen Long Park               16.7 C               26.8 C
Tai Mei Tuk               18.4 C               27.5 C

Duration of sunshine (King's Park):              7.4 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.
 

Yesterday's (04 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                          0.10
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 04 Feb
     2003copy right image | Important notices | Privacy policy Last revision date: <05 Feb 2019> 

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