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Bulletin issued at 23:02 HKT 10/Oct/2018

At 11 p.m. at the Hong Kong Observatory the air temperature was 23 degrees Celsius and the relative humidity 74 per cent.

The air temperatures at other places were:

King's Park 23 degrees;
Wong Chuk Hang 24 degrees;
Ta Kwu Ling 22 degrees;
Lau Fau Shan 22 degrees;
Tai Po 22 degrees;
Sha Tin 23 degrees;
Tuen Mun 23 degrees;
Tseung Kwan O 21 degrees;
Sai Kung 23 degrees;
Cheung Chau 21 degrees;
Chek Lap Kok 24 degrees;
Tsing Yi 23 degrees;
Shek Kong 22 degrees;
Tsuen Wan Ho Koon 21 degrees;
Tsuen Wan Shing Mun Valley 22 degrees;
Hong Kong Park 22 degrees;
Shau Kei Wan 23 degrees;
Kowloon City 23 degrees;
Happy Valley 24 degrees;
Wong Tai Sin 23 degrees;
Stanley 24 degrees;
Kwun Tong 23 degrees;
Sham Shui Po 23 degrees;
Kai Tak Runway Park 24 degrees;
Yuen Long Park 22 degrees;
Tai Mei Tuk 22 degrees.


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


Climatological Information for 10 Oct

Regional Weather in Hong Kong

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Bulletin updated at 23:15 HKT 10/Oct/2018

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

A cold front moved across the coastal areas of Guangdong in the afternoon today. Locally, there were sunny intervals at first. However, under the influence of the heavy showers associated with the cold front in the afternoon, more than 20 millimetres of rainfall were recorded over many places, and rainfall even exceeded 40 millimetres in the urban areas and Shek Kong. The northeast monsoon is expected to bring slightly cooler weather to the south China coast in the next couple of days.

Weather forecast for Hong Kong (Thursday, 11 Oct 2018)

Cloudy and slightly cooler with a few rain patches. Temperatures will range between 22 and 25 degrees. Moderate north to northeasterly winds, fresh offshore.

Outlook : Slightly cooler in the morning and at night on Friday. Sunny intervals over the weekend.


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

GALE WARNING AREA: TAIWAN STRAIT.

GENERAL SITUATION AT 100900 UTC:
COLD FRONT 20N 107E 22N 113E 24N 118E S 10KT.

MARINE FORECAST FOR 24 HOURS FROM 101300 UTC:

HONG KONG= N TO NE 4-5. RAIN PATCHES. DOWN TO 4000 M IN MIST. SEA UP TO 2 M. TEMP 22-25 C. =
KWANGTUNG= N TO NE 5-6, OCNL 7 IN E. RAIN PATCHES. SEA 2-3 M, UP TO 4 M IN E. =
TAIWAN STRAIT= NE 7-8. ISOL SHOWERS AND TS. SEA 4-6 M. SWELL NE 2-3 M. =
BASHI= NE 5-6. RAIN PATCHES. SEA 2-3 M. =
PRATAS= N TO NE 5-6. ISOL SHOWERS. SEA 2-3 M. =
BALINTANG= NE 5-6. RAIN PATCHES. SEA 2-3 M. =
SCARBOROUGH= NE 4-5. ISOL SHOWERS AND TS. SEA UP TO 2 M. =
PARACEL= N TO NE 5-6. ISOL SHOWERS AND TS. SEA 2-3 M. =
TONKIN= N TO NE 5-6, OCNL 7. ISOL SHOWERS. SEA UP TO 4 M. =
DANANG= N TO NE 5-6. ISOL SHOWERS. SEA 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.


  • 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
    9-day Weather Forecast | UV Index Forecast | Weather Information for Fishermen

    Bulletin issued at 23:30 HKT 10/Oct/2018

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 11:30 p.m. on 10 October 2018

    Warnings:
    Strong winds in Nan'ao, Shanwei, south of Hong Kong and Shangchuan Dao.

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

    Area forecasts for the next 24 hours

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

    Nan'ao and Shanwei:
    North to northeast force 5 to 6, occasionally force 7.
    Moderate to rough seas.

    South of Hong Kong and Shangchuan Dao:
    North to northeast force 5 to 6.
    Moderate to rough seas.

    Outlook for the next 48 hours
    East to northeasterly winds of force 6 to 7.

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

    Waglan Island Wind north-northeast force 4
      Visibility 11 Kilometres

    Shantou Wind southwest force 1
      Visibility 7 Kilometres in drizzle

    Dongsha Wind northeast force 3
      Visibility 10 Kilometres

    Huangmaozhou Wind north-northeast force 4

    Macau Wind north force 2
      Visibility 4200 Metres in mist

    Xisha Wind northeast force 2
      Visibility 29 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 10/OCT/2018
    (Next update at 01:30 HKT 11/OCT/2018)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     NIL
II.  SYNOPSIS OF THE WEATHER SITUATION :
     A COLD FRONT IS MOVING ACROSS THE COASTAL AREAS
     OF GUANGDONG. THE ASSOCIATED NORTHEAST MONSOON
     IS AFFECTING THE REGION GRADUALLY.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1800 TO 0400 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  020/10-15
       OFFSHORE:  010/15-20                            23-21
   B.   2000 FT:  010/15-20                            21
   C.   5000 FT:  040/10                               14
   D.  10000 FT:  260/15                               7
   E.  18000 FT:  270/30                               MS4
   F.  24000 FT:  260/35                               MS15
   G.  30000 FT:  280/45                               MS28
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL
   I. WEATHER       : 
      CLOUDY WITH A FEW RAIN PATCHES. LOCALISED MIST.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1000 FT SCT 3000 FT
   K. VISIBILITY    : 7 KM. TEMPO 2500 M IN RAIN/MIST.
   L. 0 DEG. C LEVEL: 15500 FT      10 DEG. C LEVEL(S) : 8800 FT
   M. TURBULENCE    : MOD OFFSHORE AND  NEAR HILLS
   N. SEA STATE     : 2.0-2.5 M     SEA TEMPERATURE    : 27 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE NORTH TO NORTHEASTERLY WINDS, FRESH
     OFFSHORE.  CLOUDY 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.

    The latest significant weather information
    issued by the Hong Kong Observatory at 10:00 HKT on 02 Oct 18

    VHHK SIGMET 1 VALID 020200/020600 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N1800 E11506 - N1642 E11400 - N1754 E11254 - N1800 E11506 TOP FL400 MOV W 5KT NC=

    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 10/Oct/2018 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     29.3 C
Minimum Air Temperature                     25.1 C
Grass Minimum Temperature                   23.8 C
Relative Humidity                        69 - 89 Percent
Rainfall                                     0.6 mm 
Total rainfall since 1st January          1978.8 mm
Against an average of                     2270.3 mm

Other Stations                Min                  Max
King's Park                  24.3 C               29.0 C
Wong Chuk Hang               23.4 C               28.6 C
Ta Kwu Ling                  22.1 C               30.1 C
Lau Fau Shan                 22.8 C               30.0 C
Tai Po                       23.5 C               29.8 C
Sha Tin                      23.6 C               29.6 C
Tuen Mun                     23.7 C               29.7 C
Tseung Kwan O                22.8 C               28.4 C
Sai Kung                     24.5 C               28.3 C
Cheung Chau                  23.6 C               31.0 C
Chek Lap Kok                 24.9 C               30.4 C
Tsing Yi                     25.0 C               29.5 C
Shek Kong                    22.1 C               30.1 C
Tsuen Wan Ho Koon            22.1 C               28.4 C
Tsuen Wan Shing Mun Valley   22.5 C               29.4 C
Hong Kong Park               23.7 C               27.8 C
Shau Kei Wan                 23.0 C               27.7 C
Kowloon City                 24.0 C               29.4 C
Happy Valley                 24.3 C               29.5 C
Wong Tai Sin                 24.4 C               28.5 C
Stanley                      24.3 C               29.1 C
Kwun Tong                    24.3 C               28.8 C
Sham Shui Po                 24.4 C               29.9 C
Kai Tak Runway Park          24.2 C               28.1 C
Yuen Long Park               22.1 C               29.9 C
Tai Mei Tuk               24.1 C               31.2 C

Duration of sunshine (King's Park):              4.5 H
The mean UV index recorded at King's Park yesterday was 2,
the UV intensity was Low.
The maximum UV index for yesterday was 6.
 

Yesterday's (09 Oct 2018) 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                               0.10
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                         0.14
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 09 Oct
     2003copy right image | Important notices | Privacy policy Last revision date: <10 Oct 2018> 

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