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Bulletin issued at 00:02 HKT 30/Jan/2019

At midnight at the Hong Kong Observatory the air temperature was 18 degrees Celsius and the relative humidity 85 per cent.

The air temperatures at other places were:

King's Park 17 degrees;
Wong Chuk Hang 18 degrees;
Ta Kwu Ling 17 degrees;
Lau Fau Shan 15 degrees;
Tai Po 17 degrees;
Sha Tin 17 degrees;
Tuen Mun 17 degrees;
Tseung Kwan O 17 degrees;
Sai Kung 18 degrees;
Cheung Chau 17 degrees;
Chek Lap Kok 19 degrees;
Tsing Yi 17 degrees;
Shek Kong 15 degrees;
Tsuen Wan Ho Koon 17 degrees;
Tsuen Wan Shing Mun Valley 17 degrees;
Hong Kong Park 18 degrees;
Shau Kei Wan 17 degrees;
Kowloon City 17 degrees;
Happy Valley 17 degrees;
Wong Tai Sin 18 degrees;
Stanley 17 degrees;
Kwun Tong 17 degrees;
Sham Shui Po 17 degrees;
Kai Tak Runway Park 18 degrees;
Yuen Long Park 15 degrees;
Tai Mei Tuk 17 degrees.


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


Climatological Information for 30 Jan

Regional Weather in Hong Kong

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Bulletin updated at 00:00 HKT 30/Jan/2019

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

The northeast monsoon brought generally fine weather to the coast of southeastern China yesterday. Locally, it was mainly fine. The weather was dry during the day. The monsoon is expected to moderate gradually today and tomorrow, it will be mild over the coast of Guangdong. A replenishment of the monsoon will bring cooler weather to southern China again in the latter part of this week.

Weather forecast for Hong Kong (Wednesday, 30 Jan 2019)

Mainly fine at first. Becoming cloudy during the day. Temperatures will range between 18 and 21 degrees. Moderate easterly winds, occasionally fresh offshore at first.

Outlook : Visibility relatively low on Thursday. Warm during the day. It will be cooler in the following couple of days. Becoming humid with fog early next week.


(The above forecast period is valid up to 23:59 HKT today, 30/01/2019; 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 29/Jan/2019

N0 WARNING.

GENERAL SITUATION AT 290900 UTC:
AN EASTERLY AIRSTREAM IS AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 291300 UTC:

HONG KONG= E 4-5, OCNL 6. FINE. SEA UP TO 3 M. SWELL E UP TO 2 M. TEMP 18-21 C. =
KWANGTUNG= E 5-6. FINE. SEA 2-3 M. SWELL E TO NE 2 M. =
TAIWAN STRAIT= E TO NE 4-5, UP TO 6 AT FIRST. DOWN TO 4000 M IN MORNING MIST PATCHES. SEA 2 M, UP TO 3 M AT FIRST. SWELL NE UP TO 2 M. =
BASHI= E 5-6, OCNL 7. FINE. SEA UP TO 4 M. SWELL NE 2 M. =
PRATAS= E 5-6. FINE. SEA 2-3 M. SWELL NE 2 M. =
BALINTANG= E 5-6, OCNL 7. FINE. SEA UP TO 4 M. SWELL NE 2 M. =
SCARBOROUGH= E 5-6, UP TO 7 AT FIRST. FINE. SEA 2-3 M, UP TO 4 M AT FIRST. SWELL NE 2 M. =
PARACEL= E 5-6. FINE. SEA 2-3 M. SWELL NE 2 M. =
TONKIN= E TO SE 4-5. DOWN TO 4000 M IN MIST OR LGT RAIN PATCHES. SEA UP TO 2 M. =
DANANG= E 4-5, OCNL 6. RAIN PATCHES. SEA UP TO 3 M. SWELL NE 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

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    Bulletin issued at 23:30 HKT 29/Jan/2019

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 11:30 p.m. on 29 January 2019

    Warnings:
    Strong winds in all areas.

    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.
    Moderate to rough seas.

    Nan'ao, Shanwei and South of Hong Kong:
    East force 5 to 6.
    Moderate to rough seas.

    Shangchuan Dao:
    East force 4 to 5, occasionally force 6.
    Moderate to rough seas.

    Outlook for the next 48 hours
    Easterly winds of force 5 to 6, becoming northerly winds of force 6 to 7 later. Fog patches on Thursday.

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

    Waglan Island Wind northeast force 4
      Visibility 12 Kilometres

    Shantou Wind east-northeast force 2
      Visibility 22 Kilometres

    Dongsha Wind east-northeast force 3
      Visibility 10 Kilometres

    Huangmaozhou Wind east-northeast force 4

    Xisha Wind east-northeast force 3
      Visibility 28 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 17:30 HKT 29/JAN/2019
    (Next update at 01:30 HKT 30/JAN/2019)
    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 1800 TO 0400 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  090/10-15
       OFFSHORE:  090/15-20                            21-18
   B.   2000 FT:  120/15-20                            16
   C.   5000 FT:  140/15                               10
   D.  10000 FT:  240/20                               12
   E.  18000 FT:  250/40                               MS3
   F.  24000 FT:  240/45                               MS14
   G.  30000 FT:  240/50                               MS27
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      1700-2500 FT
   I. WEATHER       : 
      MAINLY FINE.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 3000 FT.
   K. VISIBILITY    : 10 KM.
   L. 0 DEG. C LEVEL: 15500 FT      10 DEG. C LEVEL(S) : 5000, 8600, 11200 FT
   M. TURBULENCE    : MOD OFFSHORE AND NEAR HILLS
   N. SEA STATE     : 2.0-2.5 M     SEA TEMPERATURE    : 19 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE EASTERLY WINDS, FRESH OFFSHORE AT
     FIRST.  BECOMING CLOUDY. BRIGHT PERIODS DURING
     THE DAY.=

    ===================================================================
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
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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 30/Jan/2019 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     20.5 C
Minimum Air Temperature                     16.9 C
Grass Minimum Temperature                   13.7 C
Relative Humidity                        60 - 85 Percent
Rainfall                                       0 mm 
Total rainfall since 1st January             4.7 mm
Against an average of                       23.5 mm

Other Stations                Min                  Max
King's Park                  15.8 C               20.8 C
Wong Chuk Hang               13.7 C               21.5 C
Ta Kwu Ling                  12.9 C               23.1 C
Lau Fau Shan                 13.8 C               25.6 C
Tai Po                       13.7 C               21.4 C
Sha Tin                      12.6 C               21.1 C
Tuen Mun                     14.8 C               21.5 C
Tseung Kwan O                13.3 C               20.7 C
Sai Kung                     14.5 C               19.3 C
Cheung Chau                  14.5 C               22.8 C
Chek Lap Kok                 15.4 C               23.4 C
Tsing Yi                     14.6 C               22.9 C
Shek Kong                    12.1 C               23.9 C
Tsuen Wan Ho Koon            13.5 C               23.1 C
Tsuen Wan Shing Mun Valley   13.1 C               22.6 C
Hong Kong Park               15.5 C               21.3 C
Shau Kei Wan                 16.3 C               19.5 C
Kowloon City                 16.1 C               22.8 C
Happy Valley                 13.8 C               21.4 C
Wong Tai Sin                 15.2 C               21.5 C
Stanley                      16.8 C               20.0 C
Kwun Tong                    16.3 C               19.3 C
Sham Shui Po                 16.1 C               22.2 C
Kai Tak Runway Park          17.1 C               19.5 C
Yuen Long Park               12.3 C               25.4 C
Tai Mei Tuk               15.1 C               23.6 C

Duration of sunshine (King's Park):              9.8 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 7.
 

Yesterday's (29 Jan 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                           0.12
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 29 Jan
     2003copy right image | Important notices | Privacy policy Last revision date: <30 Jan 2019> 

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