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Bulletin issued at 10:02 HKT 23/Nov/2019

At 10 a.m. at the Hong Kong Observatory the air temperature was 24 degrees Celsius and the relative humidity 75 per cent.
During the past hour the mean UV Index recorded at King's Park was 3. The intensity of UV radiation was moderate.

The air temperatures at other places were:

King's Park 24 degrees;
Wong Chuk Hang 25 degrees;
Ta Kwu Ling 23 degrees;
Lau Fau Shan 22 degrees;
Tai Po 25 degrees;
Sha Tin 24 degrees;
Tuen Mun 24 degrees;
Tseung Kwan O 24 degrees;
Sai Kung 24 degrees;
Cheung Chau 26 degrees;
Chek Lap Kok 24 degrees;
Tsing Yi 24 degrees;
Shek Kong 24 degrees;
Tsuen Wan Ho Koon 23 degrees;
Tsuen Wan Shing Mun Valley 25 degrees;
Hong Kong Park 24 degrees;
Shau Kei Wan 24 degrees;
Kowloon City 26 degrees;
Happy Valley 25 degrees;
Wong Tai Sin 26 degrees;
Stanley 25 degrees;
Kwun Tong 25 degrees;
Sham Shui Po 26 degrees;
Kai Tak Runway Park 25 degrees;
Yuen Long Park 25 degrees;
Tai Mei Tuk 27 degrees.


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


Climatological Information for 23 Nov

Regional Weather in Hong Kong

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Hong Kong Climatology


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Bulletin updated at 09:45 HKT 23/Nov/2019

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

The northeast monsoon is bringing generally fine weather to Guangdong.

Weather forecast for today

Mainly fine. Moderate east to northeasterly winds.

Outlook : Fine tomorrow. Cloudier in the following couple of days. Slightly cooler on Tuesday.


(The above forecast period is valid up to 23:59 HKT today, 23/11/2019; 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 23/Nov/2019

N0 WARNING.

GENERAL SITUATION AT 222100 UTC:
THE NORTHEAST MONSOON IS AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 230100 UTC:

HONG KONG= E TO NE 4-5. FINE. SEA UP TO 2 M. SWELL NE 2 M. TEMP 26-21 C. =
KWANGTUNG= E TO NE 4-5. FINE. SEA UP TO 2 M. SWELL NE 2-3 M. =
TAIWAN STRAIT= NE 4-5, OCNL 6. LIGHT RAIN PATCHES. SEA UP TO 3 M. SWELL NE 2-3 M. =
BASHI= E TO NE 4-5. ISOL SHOWERS. SEA UP TO 2 M. SWELL NE 2-3 M. =
PRATAS= E TO NE 4-5. LIGHT RAIN PATCHES. SEA UP TO 2 M. SWELL NE 2-3 M. =
BALINTANG= E TO NE 4-5. ISOL SHOWERS AND TS. SEA UP TO 2 M. SWELL NE 2-3 M. =
SCARBOROUGH= NE 4-5. ISOL SHOWERS AND TS. SEA UP TO 2 M. SWELL NE 2-3 M. =
PARACEL= E TO NE 4-5. RAIN. SEA UP TO 2 M. SWELL NE 2-3 M. =
TONKIN= E 4-5. CLD. SEA UP TO 2 M. =
DANANG= E TO NE 4-5. LIGHT 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
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    • SOUTH CHINA COASTAL WATERS
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    South China Coastal Waters

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    Bulletin issued at 09:30 HKT 23/Nov/2019

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 9:30 a.m. on 23 November 2019

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

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    East to northeast force 4 to 5.
    Moderate seas.

    Nan'ao:
    Northeast force 4 to 5.
    Moderate to rough seas.

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

    Outlook for the next 48 hours
    East to northeasterly winds of force 5 to 6, force 7 to 8 later.

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

    Waglan Island Wind northeast force 3
      Visibility 45 Kilometres

    Shantou Wind west-northwest force 1
      Visibility 9 Kilometres

    Dongsha Wind north-northeast force 3
      Visibility 10 Kilometres

    Huangmaozhou Wind east force 4

    Macau Wind north-northeast force 2
      Visibility 14 Kilometres

    Xisha Wind east-northeast force 2
      Visibility 23 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 09:30 HKT 23/NOV/2019
    (Next update at 12:30 HKT 23/NOV/2019)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     NIL.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     THE NORTHEAST MONSOON IS AFFECTING THE SOUTH
     CHINA COASTAL AREAS.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1000 TO 2000 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  070/5-10
       OFFSHORE:  050/10-15                            21-27
   B.   2000 FT:  080/10-15                            16
   C.   5000 FT:  040/5                                12
   D.  10000 FT:  210/15                               11
   E.  18000 FT:  220/30                               MS3
   F.  24000 FT:  250/40                               MS16
   G.  30000 FT:  230/45                               MS31
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL
   I. WEATHER       : 
      MAINLY FINE.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 3000 FT.
   K. VISIBILITY    : 10 KM.
   L. 0 DEG. C LEVEL: 17000 FT      10 DEG. C LEVEL(S) : 11200 FT
   M. TURBULENCE    : NIL.
   N. SEA STATE     : 1.0-1.5 M     SEA TEMPERATURE    : 24 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE EAST TO NORTHEASTERLY WINDS. MAINLY
     FINE.=

    ===================================================================
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

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    Severe Weather Information Centre

    Bulletin issued at 12:30 HKT 22/Nov/2019


    Tropical Cyclone Warning

    At 220300 UTC, Severe Tropical Storm Fung-wong (1927) with central pressure 984 hectopascals was centred within 60 nautical miles of two three point three degrees north (23.3 N) one two five point one degrees east (125.1 E) and is forecast to move north or north-northeast at about 8 knots for the next 24 hours.

    Maximum winds near the centre are estimated to be 50 knots.

    Radius of over 33 knot winds 60 nautical miles.
    Radius of over 47 knot winds 30 nautical miles.
    Radius of over 2 metre waves 120 nautical miles.

    No further warnings on this Severe Tropical Storm will be issued by the Hong Kong Observatory unless it re-enters the Hong Kong area of responsibility.

    Forecast position and intensity at 230300 UTC
    Two six point three degrees north (26.3 N)
    One two five point three degrees east (125.3 E)
    Maximum winds 25 knots.

    Forecast position and intensity at 240300 UTC
    Dissipated over sea.



    The Hong Kong Observatory's tropical cyclone warnings for shipping are issued about one and a half hours after the time of observation. They incorporate additional information derived from surface and upper-air data and may therefore be slightly different from the real-time satellite or radar-based positions given in the hourly bulletins for public.

    While the forecast positions and track indicate the most likely future path of the tropical cyclone, they may deviate from the actual path taken by the storm.

    Tropical Cyclone Track
    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 23/Nov/2019 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     26.3 C
Minimum Air Temperature                     19.6 C
Grass Minimum Temperature                   16.4 C
Relative Humidity                        47 - 82 Percent
Rainfall                                       0 mm 
Total rainfall since 1st January          2382.7 mm
Against an average of                     2364.9 mm

Other Stations                Min                  Max
King's Park                  19.0 C               26.3 C
Wong Chuk Hang               16.3 C               25.5 C
Ta Kwu Ling                  12.4 C               28.8 C
Lau Fau Shan                 16.9 C               26.1 C
Tai Po                       16.3 C               27.4 C
Sha Tin                      15.2 C               27.4 C
Tuen Mun                     17.7 C               28.7 C
Tseung Kwan O                15.6 C               27.9 C
Sai Kung                     18.3 C               25.2 C
Cheung Chau                  17.8 C               27.9 C
Chek Lap Kok                 18.6 C               26.6 C
Tsing Yi                     17.1 C               27.6 C
Shek Kong                    14.2 C               28.7 C
Tsuen Wan Ho Koon            15.6 C               26.4 C
Tsuen Wan Shing Mun Valley   15.3 C               28.8 C
Shau Kei Wan                 18.6 C               27.0 C
Kowloon City                 18.8 C               29.0 C
Happy Valley                 16.8 C               27.5 C
Wong Tai Sin                 17.9 C               28.2 C
Stanley                      18.3 C               26.5 C
Kwun Tong                    18.6 C               27.8 C
Sham Shui Po                 17.0 C               28.5 C
Kai Tak Runway Park          19.0 C               26.7 C
Yuen Long Park               14.8 C               29.0 C
Tai Mei Tuk               17.2 C               28.5 C

Duration of sunshine (King's Park):              10.0 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 6.
 

Yesterday's (22 Nov 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 22 Nov
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