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Bulletin issued at 01:02 HKT 24/Oct/2019

At 1 a.m. at the Hong Kong Observatory the air temperature was 25 degrees Celsius and the relative humidity 75 per cent.

The air temperatures at other places were:

King's Park 25 degrees;
Wong Chuk Hang 25 degrees;
Ta Kwu Ling 23 degrees;
Lau Fau Shan 24 degrees;
Tai Po 25 degrees;
Sha Tin 24 degrees;
Tuen Mun 24 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 24 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 24 Oct

Regional Weather in Hong Kong

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Bulletin updated at 00:45 HKT 24/Oct/2019

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

An easterly airstream affected the coast of Guangdong yesterday. Locally, it was mainly fine. Besides, pressure over Guangdong is rising. The northeast monsoon is expected to reach the coast of Guangdong in the morning. With the northeast monsoon persisting over Guangdong in the next few days, it will be generally fine over the region.

Weather forecast for Hong Kong

Becoming cloudy. One or two rain patches in the 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 with a maximum temperature of 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 today, 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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Bulletin issued at 21:00 HKT 23/Oct/2019

N0 WARNING.

GENERAL SITUATION AT 230900 UTC:
AN NORTHEAST MONSOON IS GENERALLY AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 231300 UTC:

HONG KONG= E TO NE 4-5. RAIN PATCHES. SEA UP TO 2 M. TEMP 23-27 C. =
KWANGTUNG= E TO NE 4-5. ISOL SHOWERS. SEA UP TO 2 M. =
TAIWAN STRAIT= NE 4-5, OCNL 6. RAIN PATCHES. SEA UP TO 3 M. SWELL NE 2 M. =
BASHI= E TO NE 4-5. RAIN PATCHES. SEA UP TO 2 M. SWELL NE 2 M. =
PRATAS= NE 4-5, OCNL 6. ISOL SHOWERS. SEA UP TO 3 M. SWELL NE 2 M. =
BALINTANG= E TO NE 4-5. RAIN PATCHES. SEA UP TO 2 M. SWELL NE 2 M. =
SCARBOROUGH= NE 4-5. ISOL SHOWERS AND TS. SEA UP TO 2 M. SWELL NE 2 M. =
PARACEL= E TO NE 4-5. ISOL SHOWERS. SEA UP TO 2 M. =
TONKIN= SE 4-5, BEC NE 4-5. ISOL SHOWERS AND TS. SEA UP TO 2 M. =
DANANG= E TO SE 4-5. ISOL SHOWERS AND TS. 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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    9-day Weather Forecast | UV Index Forecast | Weather Information for Fishermen

    Bulletin issued at 23:30 HKT 23/Oct/2019

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 11:30 p.m. on 23 October 2019

    Weather Situation:
    Pressure over Guangdong is rising. The northeast monsoon is expected to reach the coastal waters of Guangdong in the morning.

    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-northeast force 4
      Visibility 40 Kilometres

    Shantou Wind east force 2
      Visibility 26 Kilometres

    Huangmaozhou Wind east force 5

    Macau Wind east force 3
      Visibility 16 Kilometres

    Xisha Wind east-northeast force 1
      Visibility 25 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 24/OCT/2019
    (Next update at 9:00-9:30 HKT 24/OCT/2019)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     NIL
II.  SYNOPSIS OF THE WEATHER SITUATION :
     PRESSURE OVER GUANGDONG IS RISING. THE NORTHEAST
     MONSOON IS EXPECTED TO REACH THE COAST OF
     GUANGDONG IN THE MORNING.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 0200 TO 1200 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  100/05-10
                  BECMG 040/10
       OFFSHORE:  080/15-20                            24-28
   B.   2000 FT:  090/10-15, OCNL 20 IN S              20
   C.   5000 FT:  060/5-10                             16
   D.  10000 FT:  310/10                               8
   E.  18000 FT:  300/25                               MS1
   F.  24000 FT:  310/30                               MS14
   G.  30000 FT:  300/35                               MS26
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL
   I. WEATHER       : 
      MAINLY CLOUDY WITH A FEW RAIN PATCHES.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 2500 FT SCT 4000 FT.
   K. VISIBILITY    : 8 KM. TEMPO 4000 M IN RAIN.
   L. 0 DEG. C LEVEL: 16500 FT      10 DEG. C LEVEL(S) : 9200 FT
   M. TURBULENCE    : MOD OFFSHORE AND NEAR HILLS.
   N. SEA STATE     : 2.0-2.5 M     SEA TEMPERATURE    : 27 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE EAST TO NORTHEASTERLY WINDS. BRIGHT
     PERIODS.=

    ===================================================================
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 24/Oct/2019 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     28.7 C
Minimum Air Temperature                     23.5 C
Grass Minimum Temperature                   22.2 C
Relative Humidity                        59 - 80 Percent
Rainfall                                       0 mm 
Total rainfall since 1st January          2382.7 mm
Against an average of                     2322.3 mm

Other Stations                Min                  Max
King's Park                  22.7 C               27.5 C
Wong Chuk Hang               21.3 C               27.4 C
Ta Kwu Ling                  19.9 C               29.1 C
Lau Fau Shan                 20.7 C               29.8 C
Tai Po                       21.5 C               27.0 C
Sha Tin                      20.8 C               28.0 C
Tuen Mun                     22.3 C               28.3 C
Tseung Kwan O                20.6 C               27.8 C
Sai Kung                     21.9 C               26.3 C
Cheung Chau                  21.8 C               28.8 C
Chek Lap Kok                 23.6 C               29.6 C
Tsing Yi                     23.2 C               28.6 C
Shek Kong                    19.7 C               29.1 C
Tsuen Wan Ho Koon            19.9 C               27.7 C
Tsuen Wan Shing Mun Valley   20.7 C               28.7 C
Hong Kong Park               22.3 C               27.7 C
Shau Kei Wan                 23.0 C               26.9 C
Kowloon City                 22.3 C               28.9 C
Happy Valley                 21.7 C               28.6 C
Wong Tai Sin                 22.5 C               27.7 C
Stanley                      23.7 C               27.1 C
Kwun Tong                    22.4 C               27.1 C
Sham Shui Po                 22.2 C               29.3 C
Kai Tak Runway Park          23.7 C               27.2 C
Yuen Long Park               19.7 C               29.9 C
Tai Mei Tuk               21.7 C               28.6 C

Duration of sunshine (King's Park):              10.2 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 (23 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 23 Oct
     2003copy right image | Important notices | Privacy policy Last revision date: <24 Oct 2019> 

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