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Bulletin issued at 18:02 HKT 30/Jan/2019

At 6 p.m. at the Hong Kong Observatory the air temperature was 20 degrees Celsius and the relative humidity 68 per cent.
During the past hour the mean UV Index recorded at King's Park was 0.1. The intensity of UV radiation was low.

The air temperatures at other places were:

King's Park 20 degrees;
Wong Chuk Hang 20 degrees;
Ta Kwu Ling 21 degrees;
Lau Fau Shan 21 degrees;
Tai Po 20 degrees;
Sha Tin 20 degrees;
Tuen Mun 20 degrees;
Tseung Kwan O 20 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 20 degrees;
Tsuen Wan Shing Mun Valley 21 degrees;
Hong Kong Park 20 degrees;
Shau Kei Wan 19 degrees;
Kowloon City 20 degrees;
Happy Valley 20 degrees;
Wong Tai Sin 21 degrees;
Stanley 20 degrees;
Kwun Tong 20 degrees;
Sham Shui Po 21 degrees;
Kai Tak Runway Park 20 degrees;
Yuen Long Park 21 degrees;
Tai Mei Tuk 20 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

Information on Tropical Cyclones

Hong Kong Climatology


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Bulletin updated at 17:45 HKT 30/Jan/2019

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

Pressure is rising over northern China. The northeast monsoon is expected to reach the south China coast tomorrow night.

Weather forecast for tonight and tomorrow

Mainly cloudy. Visibility relatively low tomorrow. One or two light rain patches in the morning. The minimum temperature will be about 19 degrees. Warm with sunny periods during the day with a maximum temperature of around 24 degrees. Light to moderate northeasterly winds.

Outlook : Cooler on Friday and Saturday. Becoming humid with fog early next week.


(The above forecast period is valid up to 23:59 HKT tomorrow, 31/01/2019; 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 09:00 HKT 30/Jan/2019

N0 WARNING.

GENERAL SITUATION AT 292100 UTC:
AN EASTERLY AIRSTREAM IS AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 300100 UTC:

HONG KONG= E 4-5. DOWN TO 1000 M IN MIST OR LGT RAIN PATCHES TOMORROW MORNING. SEA UP TO 2 M. SWELL E UP TO 2 M. TEMP 21-19 C. =
KWANGTUNG= E TO SE 4-5, OCNL 6. DOWN TO 500 M IN FOG OR LGT RAIN PATCHES TOMORROW MORNING. SEA UP TO 3 M. SWELL E TO NE 2 M. =
TAIWAN STRAIT= E TO NE 4-5, SE 4-5 LATER. DOWN TO 500 M IN FOG OR LGT RAIN PATCHES. SEA UP TO 2 M. SWELL NE UP TO 2 M. =
BASHI= E TO SE 5-6, OCNL 7. LGT RAIN PATCHES. SEA UP TO 4 M. SWELL NE 2 M. =
PRATAS= E TO SE 5-6. LGT RAIN PATCHES. SEA 2-3 M. SWELL NE 2 M. =
BALINTANG= E TO SE 5-6, OCNL 7. LGT RAIN PATCHES. SEA UP TO 4 M. SWELL NE 2 M. =
SCARBOROUGH= E 4-5, UP TO 6 AT FIRST. FINE. SEA 2 M, UP TO 3 M AT FIRST. SWELL NE 2 M. =
PARACEL= E 4-5, OCNL 6. FINE. SEA UP TO 3 M. SWELL NE 2 M. =
TONKIN= E TO SE 4-5. MIST PATCHES. DOWN TO 500 M IN FOG OR LGT RAIN PATCHES TOMORROW MORNING. SEA UP TO 2 M. =
DANANG= E TO SE 4-5, OCNL 6. LGT 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
  • Tidal Information

    • 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 16:30 HKT 30/Jan/2019

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 4:30 p.m. on 30 January 2019

    Warnings:
    Fog in Nan'ao and Shanwei.

    Weather Situation:
    An easterly airstream is affecting the south China coastal waters. Meanwhile, pressure is rising over northern China. The northeast monsoon is expected to reach the south China coastal waters tomorrow night.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    Northeast force 4 to 5.
    A few light rain patches tomorrow morning, visibility relatively low in some areas.
    Moderate seas.

    Nan'ao and Shanwei:
    East to northeast force 4 to 5.
    Fog patches tomorrow morning.
    Moderate seas.

    South of Hong Kong and Shangchuan Dao:
    East to northeast force 4 to 5.
    Moderate seas.

    Outlook for the next 48 hours
    Northeasterly winds of force 4 to 5, becoming northerly winds of force 6 to 7. Fog patches.

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

    Waglan Island Wind north-northeast force 4
      Visibility 14 Kilometres

    Shantou Wind east-northeast force 2
      Visibility 29 Kilometres

    Dongsha Wind east force 2
      Visibility 10 Kilometres

    Huangmaozhou Wind northeast force 4

    Macau Wind east-northeast force 1
      Visibility 18 Kilometres

    Xisha Wind east force 4
      Visibility 29 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 30/JAN/2019
    (Next update at 01:30 HKT 31/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. MEANWHILE, PRESSURE IS
     RISING OVER NORTHERN CHINA. THE NORTHEAST
     MONSOON IS EXPECTED TO REACH THE SOUTH CHINA
     COASTAL AREAS TOMORROW NIGHT.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1800 TO 0400 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  080/5-10
       OFFSHORE:  070/15 OCNL 20                       22-19
   B.   2000 FT:  120/10-15                            16
   C.   5000 FT:  160/15                               11
   D.  10000 FT:  260/25                               11
   E.  18000 FT:  240/50                               MS3
   F.  24000 FT:  250/50                               MS15
   G.  30000 FT:  240/50                               MS28
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL
   I. WEATHER       : 
      MAINLY CLOUDY.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 3000 FT SCT 4500 FT
   K. VISIBILITY    : 8 KM.
   L. 0 DEG. C LEVEL: 16000 FT      10 DEG. C LEVEL(S) : 5400, 8400, 11000 FT
   M. TURBULENCE    : MOD OFFSHORE
   N. SEA STATE     : 1.0-2.0 M     SEA TEMPERATURE    : 19 DEG
IV.  FURTHER OUTLOOK: 
     LIGHT TO MODERATE NORTHEASTERLY WINDS. MAINLY
     CLOUDY, SUNNY PERIONDS DURING THE DAY. ONE OR
     TWO LIGHT RAIN PATCHES IN THE MORNING. LOCALISED
     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)

    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 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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