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Bulletin issued at 19:02 HKT 23/Oct/2019

At 7 p.m. at the Hong Kong Observatory the air temperature was 25 degrees Celsius and the relative humidity 72 per cent.

The air temperatures at other places were:

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


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


Climatological Information for 23 Oct

Regional Weather in Hong Kong

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Bulletin updated at 18:45 HKT 23/Oct/2019

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

Pressure over southern China is rising. A moderate northeast monsoon is expected to reach the coast of Guangdong overnight.

Weather forecast for tonight and tomorrow

Becoming cloudy. One or two rain patches tomorrow morning. The minimum temperature will be about 23 degrees in the urban areas, and a couple of degrees lower in the New Territories. Bright periods during the day. The maximum temperature will be around 27 degrees. Moderate east to northeasterly winds.

Outlook : Sunny periods in the following few days.


(The above forecast period is valid up to 23:59 HKT tomorrow, 24/10/2019; 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/Oct/2019

N0 WARNING.

GENERAL SITUATION AT 222100 UTC:
AN EASTERLY AIRSTREAM IS GENERALLY AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 230100 UTC:

HONG KONG= E 4-5. ISOL SHOWERS. SEA UP TO 2 M. TEMP 29-24 C. =
KWANGTUNG= E TO NE 4-5. ISOL SHOWERS. SEA UP TO 2 M. =
TAIWAN STRAIT= NE 4-5, OCNL 6. ISOL SHOWERS. SEA UP TO 3 M. SWELL NE 2 M. =
BASHI= E TO NE 4-5. ISOL SHOWERS. SEA UP TO 2 M. SWELL NE 2 M. =
PRATAS= E TO NE 4-5, OCNL 6. ISOL SHOWERS. SEA UP TO 3 M. SWELL NE 2 M. =
BALINTANG= E TO NE 4-5. ISOL SHOWERS. SEA UP TO 2 M. SWELL NE 2 M. =
SCARBOROUGH= NE 4-5. ISOL SHOWERS. SEA UP TO 2 M. SWELL NE 2 M. =
PARACEL= E TO NE 4-5. RAIN PATCHES. SEA UP TO 2 M. =
TONKIN= SE 4-5, NE 4-5 LATER. RAIN PATCHES. SEA UP TO 2 M. =
DANANG= E TO SE 4-5. 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 19:30 HKT 23/Oct/2019

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 7:30 p.m. on 23 October 2019

    Weather Situation:
    Pressure over southern China is rising. The northeast monsoon is expected to reach the coastal waters of Guangdong overnight.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    East to northeast force 4 to 5.
    A few rain patches.
    Moderate seas.

    Nan'ao:
    Northeast force 4 to 5.
    Moderate 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 4 to 5, occasionally force 6.

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

    Waglan Island Wind east force 4
      Visibility 42 Kilometres

    Shantou Wind east-southeast force 2
      Visibility 28 Kilometres

    Dongsha Wind north force 4
      Visibility 9 Kilometres in rain

    Huangmaozhou Wind east force 4

    Macau Wind east force 2
      Visibility 17 Kilometres

    Xisha Wind northeast force 2
      Visibility 24 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 23/OCT/2019
    (Next update at 01:30 HKT 24/OCT/2019)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     NIL
II.  SYNOPSIS OF THE WEATHER SITUATION :
     PRESSURE OVER SOUTHERN CHINA IS RISING. A
     MODERATE NORTHEAST MONSOON IS EXPECTED TO REACH
     THE COAST OF GUANGDONG OVERNIGHT.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1800 TO 0400 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  070/10-15
       OFFSHORE:  080/15-20                            27-23
   B.   2000 FT:  090/10-15                            19
   C.   5000 FT:  060/10                               17
   D.  10000 FT:  280/10                               8
   E.  18000 FT:  290/25                               MS1
   F.  24000 FT:  290/30                               MS14
   G.  30000 FT:  290/35                               MS27
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      BECOMING CLOUDY. A FEW RAIN PATCHES IN THE
      MORNING.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 2500 FT SCT 3500 FT.
   K. VISIBILITY    : 10 KM. TEMPO 4000 M IN RAIN.
   L. 0 DEG. C LEVEL: 17500 FT      10 DEG. C LEVEL(S) : 9000 FT
   M. TURBULENCE    : MOD OFFSHORE AND NEAR HILLS.
   N. SEA STATE     : 1.0-1.5 M     SEA TEMPERATURE    : 27 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE EAST TO NORTHEASTERLY WINDS. CLOUDY
     PERIODS WITH A FEW 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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    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 23/Oct/2019 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     28.0 C
Minimum Air Temperature                     23.4 C
Grass Minimum Temperature                   22.1 C
Relative Humidity                        56 - 79 Percent
Rainfall                                       0 mm 
Total rainfall since 1st January          2382.7 mm
Against an average of                     2320.7 mm

Other Stations                Min                  Max
King's Park                  22.5 C               27.1 C
Wong Chuk Hang               19.9 C               27.5 C
Ta Kwu Ling                  17.8 C               28.0 C
Lau Fau Shan                 20.2 C               29.3 C
Tai Po                       20.4 C               26.5 C
Sha Tin                      19.7 C               27.4 C
Tuen Mun                     21.3 C               28.4 C
Tseung Kwan O                20.2 C               27.2 C
Sai Kung                     21.5 C               26.1 C
Cheung Chau                  21.6 C               28.2 C
Chek Lap Kok                 23.0 C               29.5 C
Tsing Yi                     21.4 C               27.8 C
Shek Kong                    18.8 C               28.2 C
Tsuen Wan Ho Koon            19.8 C               27.0 C
Tsuen Wan Shing Mun Valley   19.3 C               27.8 C
Hong Kong Park               21.7 C               27.7 C
Shau Kei Wan                 22.1 C               26.0 C
Kowloon City                 22.2 C               28.7 C
Happy Valley                 20.5 C               28.0 C
Wong Tai Sin                 21.9 C               26.9 C
Stanley                      23.8 C               26.9 C
Kwun Tong                    22.3 C               26.3 C
Sham Shui Po                 21.8 C               28.5 C
Kai Tak Runway Park          23.6 C               26.3 C
Yuen Long Park               19.1 C               28.7 C
Tai Mei Tuk               22.2 C               27.9 C

Duration of sunshine (King's Park):              9.9 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 (22 Oct 2019) average ambient gamma radiation
dose rate taken outdoors in Hong Kong ranged from 0.09 to
0.14 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                         0.11
Sha Tau Kok                         0.10
Kwun Tong                           0.12
Sai Wan Ho                          0.09
King's Park                         0.14
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 22 Oct
     2003copy right image | Important notices | Privacy policy Last revision date: <23 Oct 2019> 

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