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Bulletin issued at 00:02 HKT 28/Nov/2018

At midnight at the Hong Kong Observatory the air temperature was 19 degrees Celsius and the relative humidity 95 per cent.

The air temperatures at other places were:

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

Between 10:45 and 11:45 p.m., the rainfall recorded in various regions were:

Islands District 0 to 1 mm;
Sai Kung 0 to 1 mm;
Southern District 0 to 1 mm.


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


Climatological Information for 28 Nov

Regional Weather in Hong Kong

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Bulletin updated at 00:00 HKT 28/Nov/2018

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

The northeast monsoon affected southern China yesterday. A broad band of clouds brought rainy weather to the northern part of the South China Sea and the south China coast. Locally, it was cloudy. There were bright periods in the morning and rain after midday. More than 10 millimetres of rainfall were recorded over most parts of the territory. The monsoon is expected to bring slightly cooler weather to southern China today and tomorrow. Under the influence of the cloud band, there will still be rain over the northern part of the South China Sea and the south China coast today. Besides, Tropical Cyclone Man-yi weakened into an area of low pressure over the western North Pacific yesterday.

Weather forecast for Hong Kong (Wednesday, 28 Nov 2018)

Cloudy with rain. Rain will ease off later. Slightly cooler with temperatures ranging between 18 and 21 degrees. Moderate northeasterly winds.

Outlook : The weather will improve on Thursday. Temperatures rising in the following few days.


(The above forecast period is valid up to 23:59 HKT today, 28/11/2018; 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 27/Nov/2018

N0 WARNING.

GENERAL SITUATION AT 270900 UTC:
THE NORTHEAST MONSOON IS AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 271300 UTC:

HONG KONG= NE 4-5, OCNL 6. RAIN. SEA UP TO 3 M. SWELL NE UP TO 2 M. TEMP 18-21 C. =
KWANGTUNG= NE 6-7. ISOL SHOWERS AND TS. SEA 3-4 M. SWELL NE 2 M. =
TAIWAN STRAIT= NE 6-7. RAIN PATCHES. SEA 3-4 M. SWELL NE 2 M. =
BASHI= E 6-7. RAIN PATCHES. SEA 3-4 M. SWELL E TO NE 2-3 M. =
PRATAS= E TO NE 6-7. RAIN PATCHES. SEA 3-4 M. SWELL NE 2-3 M. =
BALINTANG= E 6-7. RAIN PATCHES. SEA 3-4 M. SWELL E TO NE 2-3 M. =
SCARBOROUGH= E TO NE 5-6. RAIN PATCHES. SEA 2-3 M. SWELL NE 2 M. =
PARACEL= NE 6-7. ISOL SHOWERS AND TS. SEA 3-4 M. SWELL NE 2-3 M. =
TONKIN= NE 5-6. ISOL SHOWERS. SEA 2-3 M. =
DANANG= NE 6-7. ISOL SHOWERS AND TS. SEA 3-4 M. SWELL NE 2-3 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

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    Bulletin issued at 23:30 HKT 27/Nov/2018

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 11:30 p.m. on 27 November 2018

    Warnings:
    Strong winds in all areas.

    Weather Situation:
    The northeast monsoon is affecting the south China coastal waters.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    Northeast force 4 to 5, occasionally force 6.
    Some rain.
    Moderate to rough seas.

    Nan'ao, Shanwei and South of Hong Kong:
    Northeast force 6 to 7.
    Rough seas.

    Shangchuan Dao:
    Northeast force 6 to 7.
    Isolated showers and thunderstorms.
    Rough seas.

    Outlook for the next 48 hours
    East to northeasterly winds of force 6 to 7. Isolated showers and thunderstorms.

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

    Waglan Island Wind east-northeast force 4

    Shantou Wind south-southeast force 1
      Visibility 5000 Metres in rain

    Dongsha Wind northeast force 3
      Visibility 10 Kilometres

    Huangmaozhou Wind northeast force 4

    Xisha Wind east-northeast force 2
      Visibility 18 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 27/NOV/2018
    (Next update at 01:30 HKT 28/NOV/2018)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     NIL
II.  SYNOPSIS OF THE WEATHER SITUATION :
     THE NORTHEAST MONSOON IS AFFECTING SOUTHERN
     CHINA. MEANWHILE, A BROAD BAND OF CLOUDS IS
     BRINGING RAINY WEATHER TO THE NORTHERN PART OF
     THE SOUTH CHINA SEA AND THE SOUTH CHINA COAST.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1800 TO 0400 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  040/5-10
       OFFSHORE:  040/15, OCNL 20                      20-18
   B.   2000 FT:  050/15, OCNL 20                      15
   C.   5000 FT:  140/15                               13
   D.  10000 FT:  250/20                               8
   E.  18000 FT:  260/40                               MS4
   F.  24000 FT:  230/50                               MS16
   G.  30000 FT:  240/50                               MS27
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      CLOUDY WITH RAIN.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1500 FT SCT 3500 FT.
   K. VISIBILITY    : 7 KM. TEMPO 2500 M IN RAIN
   L. 0 DEG. C LEVEL: 15000 FT      10 DEG. C LEVEL(S) : 7600 FT
   M. TURBULENCE    : MOD OFFSHORE AND  NEAR HILLS
   N. SEA STATE     : 1.0-2.5 M     SEA TEMPERATURE    : 23 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE NORTHEASTERLY WINDS.  MAINLY CLOUDY
     WITH RAIN PATCHES.=

    ===================================================================
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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     2003copy right image | Important notices | Privacy policy Last revision date: <27 Nov 2018> 
    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 28/Nov/2018 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     22.5 C
Minimum Air Temperature                     19.0 C
Grass Minimum Temperature                   18.2 C
Relative Humidity                        70 - 96 Percent
Rainfall                                    16.3 mm 
Total rainfall since 1st January          2143.3 mm
Against an average of                     2368.2 mm

Other Stations                Min                  Max
King's Park                  18.5 C               23.0 C
Wong Chuk Hang               18.6 C               22.8 C
Ta Kwu Ling                  16.0 C               22.2 C
Lau Fau Shan                 17.7 C               22.0 C
Tai Po                       18.3 C               21.5 C
Sha Tin                      18.8 C               22.3 C
Tuen Mun                     18.6 C               21.7 C
Tseung Kwan O                18.2 C               22.6 C
Sai Kung                     18.7 C               22.7 C
Cheung Chau                  18.4 C               22.0 C
Chek Lap Kok                 19.2 C               22.9 C
Tsing Yi                     18.9 C               22.8 C
Shek Kong                    17.5 C               22.6 C
Tsuen Wan Ho Koon            17.9 C               21.0 C
Tsuen Wan Shing Mun Valley   18.1 C               22.1 C
Hong Kong Park               18.4 C               23.0 C
Shau Kei Wan                 18.1 C               22.4 C
Kowloon City                 18.2 C               22.7 C
Happy Valley                 18.9 C               23.4 C
Wong Tai Sin                 18.8 C               22.7 C
Stanley                      18.5 C               22.4 C
Kwun Tong                    18.3 C               22.2 C
Sham Shui Po                 18.7 C               23.3 C
Kai Tak Runway Park          18.8 C               22.7 C
Tai Mei Tuk               18.1 C               22.9 C

Duration of sunshine (King's Park):              0.2 H
The mean UV index recorded at King's Park yesterday was 1,
the UV intensity was Low.
The maximum UV index for yesterday was 4.
 

Yesterday's (27 Nov 2018) 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                               0.10
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 27 Nov
     2003copy right image | Important notices | Privacy policy Last revision date: <28 Nov 2018> 

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