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Bulletin issued at 03:02 HKT 11/Nov/2018

At 3 a.m. at the Hong Kong Observatory the air temperature was 23 degrees Celsius and the relative humidity 83 per cent.

The air temperatures at other places were:

King's Park 22 degrees;
Wong Chuk Hang 23 degrees;
Ta Kwu Ling 21 degrees;
Lau Fau Shan 21 degrees;
Tai Po 22 degrees;
Sha Tin 21 degrees;
Tuen Mun 21 degrees;
Tseung Kwan O 22 degrees;
Sai Kung 22 degrees;
Cheung Chau 22 degrees;
Chek Lap Kok 23 degrees;
Tsing Yi 23 degrees;
Shek Kong 23 degrees;
Tsuen Wan Ho Koon 20 degrees;
Tsuen Wan Shing Mun Valley 22 degrees;
Hong Kong Park 23 degrees;
Shau Kei Wan 22 degrees;
Kowloon City 22 degrees;
Happy Valley 23 degrees;
Wong Tai Sin 22 degrees;
Stanley 23 degrees;
Kwun Tong 22 degrees;
Sham Shui Po 23 degrees;
Kai Tak Runway Park 23 degrees;
Yuen Long Park 20 degrees;
Tai Mei Tuk 21 degrees.


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


Climatological Information for 11 Nov

Regional Weather in Hong Kong

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Bulletin updated at 02:45 HKT 11/Nov/2018

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

A fresh easterly airstream is affecting the coast of Guangdong.

Weather forecast for today

Mainly cloudy. One or two light rain patches in the morning and at night. Sunny periods during the day. Temperatures will range between 23 and 26 degrees. Moderate to fresh easterly winds.

Outlook : Sunny periods in the following couple of days. Windy with light rain in the middle and latter parts of this week.


(The above forecast period is valid up to 23:59 HKT today, 11/11/2018; 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 10/Nov/2018

GALE WARNING AREAS: TAIWAN STRAIT, BASHI, BALINTANG AND SCARBOROUGH.

GENERAL SITUATION AT 100900 UTC:
AN EASTERLY AIRSTREAM IS AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 101300 UTC:

HONG KONG= E 5-6, OCNL 7. LGT RAIN PATCHES IN THE MORNING AND AT NIGHT. SEA UP TO 4 M. SWELL E TO NE 2 M. TEMP 23-26 C. =
KWANGTUNG= E TO NE 6-7. LGT RAIN PATCHES. SEA 3-4 M. SWELL E TO NE 2-3 M. =
TAIWAN STRAIT= NE 7-8. LGT RAIN PATCHES. SEA 4-6 M. SWELL NE 2-3 M. =
BASHI= E TO NE 6-7, OCNL 8. LGT RAIN PATCHES. SEA UP TO 6 M. SWELL E TO NE 2-3 M. =
PRATAS= E 6-7. LGT RAIN PATCHES. SEA 3-4 M. SWELL E TO NE 2-3 M. =
BALINTANG= E 7-8. LGT RAIN PATCHES. SEA 4-6 M. SWELL E TO NE 2-3 M. =
SCARBOROUGH= E TO NE 6-7, OCNL 8. FINE. SEA UP TO 6 M. SWELL E TO NE 2-3 M. =
PARACEL= E 5-6, OCNL 7. LGT RAIN PATCHES. SEA UP TO 4 M. SWELL E 2-3 M. =
TONKIN= E 5-6. LGT RAIN PATCHES. SEA 2-3 M. SWELL E UP TO 2 M. =
DANANG= E 5-6. LGT RAIN PATCHES. SEA 2-3 M. SWELL E 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
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    Bulletin issued at 03:30 HKT 11/Nov/2018

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 3:30 a.m. on 11 November 2018

    Warnings:
    Strong winds in all areas.

    Weather Situation:
    An easterly airstream is affecting the coastal waters of Guangdong.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    East force 5 to 6.
    A few light rain patches in the morning and at night.
    Moderate to rough seas.

    Nan'ao:
    East to northeast force 6 to 7.
    Rough seas.

    Shanwei and South of Hong Kong:
    East force 6 to 7.
    Rough seas.

    Shangchuan Dao:
    East force 5 to 6, occasionally force 7.
    Moderate to rough seas.

    Outlook for the next 48 hours
    East to northeasterly winds of force 5 to 6, becoming force 7 later.

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

    Waglan Island Wind northeast force 5
      Visibility 11 Kilometres

    Shantou Wind south-southwest force 1
      Visibility 6 Kilometres

    Dongsha Wind east force 3
      Visibility 10 Kilometres

    Huangmaozhou Wind east force 5

    Macau Wind north-northeast force 2
      Visibility 6 Kilometres

    Xisha Wind east-northeast force 2
      Visibility 21 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 11/NOV/2018
    (Next update at 9:00-9:30 HKT 11/NOV/2018)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     STRONG WINDS AND SEV TURB.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     A FRESH TO STRONG EASTERLY AIRSTREAM IS
     AFFECTING THE COAST OF GUANGDONG.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 0200 TO 1200 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  090/10-15
       OFFSHORE:  090/20-25                            22-27
   B.   2000 FT:  090/20-25                            19
   C.   5000 FT:  150/15                               17
   D.  10000 FT:  190/10                               10
   E.  18000 FT:  270/25                               MS5
   F.  24000 FT:  270/35                               MS16
   G.  30000 FT:  270/55                               MS27
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      3700-4400 FT
   I. WEATHER       : 
      MAINLY CLOUDY. ONE OR TWO LIGHT RAIN PATCHES IN
      THE MORNING. SUNNY PERIODS DURING THE DAY.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 2000 FT SCT 5000 FT
   K. VISIBILITY    : 10 KM. TEMPO 4000 M IN RAIN.
   L. 0 DEG. C LEVEL: 14500 FT      10 DEG. C LEVEL(S) : 7800, 9200, 10200 FT
   M. TURBULENCE    : MOD TO SEV OFFSHORE AND NEAR HILLS
   N. SEA STATE     : 3.0-4.0 M     SEA TEMPERATURE    : 25 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE TO FRESH EASTERLY WINDS. SUNNY PERIODS.
     ONE OR TWO LIGHT RAIN PATCHES 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 00:15 HKT 11/Nov/2018 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     25.4 C
Minimum Air Temperature                     23.4 C
Grass Minimum Temperature                   22.0 C
Relative Humidity                        71 - 82 Percent
Rainfall                                      Trace 
Total rainfall since 1st January          2086.0 mm
Against an average of                     2348.4 mm

Other Stations                Min                  Max
King's Park                  22.6 C               25.2 C
Wong Chuk Hang               22.9 C               26.2 C
Ta Kwu Ling                  22.7 C               26.7 C
Lau Fau Shan                 21.3 C               27.8 C
Tai Po                       22.3 C               23.8 C
Sha Tin                      22.8 C               26.0 C
Tuen Mun                     22.2 C               26.5 C
Tseung Kwan O                22.7 C               25.8 C
Sai Kung                     23.3 C               24.3 C
Cheung Chau                  22.1 C               27.9 C
Chek Lap Kok                 23.5 C               27.0 C
Tsing Yi                     23.5 C               25.4 C
Shek Kong                    22.9 C               26.4 C
Tsuen Wan Ho Koon            21.2 C               24.8 C
Tsuen Wan Shing Mun Valley   22.9 C               26.0 C
Hong Kong Park               23.3 C               24.4 C
Shau Kei Wan                 22.7 C               23.7 C
Kowloon City                 22.5 C               26.5 C
Happy Valley                 23.1 C               25.9 C
Wong Tai Sin                 23.0 C               26.2 C
Stanley                      22.7 C               25.3 C
Kwun Tong                    22.5 C               24.6 C
Sham Shui Po                 23.2 C               27.0 C
Kai Tak Runway Park          23.2 C               24.6 C
Yuen Long Park               21.6 C               26.5 C
Tai Mei Tuk               22.5 C               26.2 C

Duration of sunshine (King's Park):              0.8 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 (10 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                           0.12
Sai Wan Ho                          0.09
King's Park                         0.15
Tsim Bei Tsui                       0.13
Cape D'Aguilar                      0.13
Chek Lap Kok                        0.14

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 10 Nov
     2003copy right image | Important notices | Privacy policy Last revision date: <11 Nov 2018> 

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