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Bulletin issued at 09:02 HKT 11/Oct/2018

At 9 a.m. at the Hong Kong Observatory the air temperature was 23 degrees Celsius and the relative humidity 74 per cent.
During the past hour the mean UV Index recorded at King's Park was 0.8. The intensity of UV radiation was low.

The air temperatures at other places were:

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

Between midnight and 9 a.m. the minimum temperature was 22.3 degrees Celsius at the Hong Kong Observatory.


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


Climatological Information for 11 Oct

Regional Weather in Hong Kong

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Hong Kong Climatology


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Bulletin updated at 08:45 HKT 11/Oct/2018

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

The northeast monsoon is bringing slightly cooler weather to the coastal areas of Guangdong. Locally, temperatures over most parts of the territory this morning were about four degrees lower than those of yesterday.

Weather forecast for today

Cloudy with one or two rain patches. It will be slightly cooler. The maximum temperature will be about 25 degrees during the day. Moderate north to northeasterly winds, fresh offshore.

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


(The above forecast period is valid up to 23:59 HKT today, 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 09:00 HKT 11/Oct/2018

GALE WARNING AREA: TAIWAN STRAIT.

GENERAL SITUATION AT 102100 UTC:
DISSIPATING COLD FRONT 19N 111E 22N 119E.

MARINE FORECAST FOR 24 HOURS FROM 110100 UTC:

HONG KONG= N TO NE 4-5, OCNL 6. ONE OR TWO RAIN PATCHES. SEA UP TO 3 M. TEMP 25-23 C. =
KWANGTUNG= N TO NE 5-6, 7 IN E. RAIN PATCHES. SEA 2-3 M, 4 M IN E. SWELL NE 2 M. =
TAIWAN STRAIT= NE 7-8. ISOL SHOWERS AND TS. SEA 4-6 M. SWELL NE 2-3 M. =
BASHI= NE 6-7. RAIN PATCHES. SEA 3-4 M. SWELL NE 2 M. =
PRATAS= NE 6-7. ISOL SHOWERS. SEA 3-4 M. SWELL NE 2 M. =
BALINTANG= NE 5-6, OCNL 7. RAIN PATCHES. SEA UP TO 4 M. =
SCARBOROUGH= NE 5-6. ISOL SHOWERS AND TS. SEA 2-3 M. =
PARACEL= N TO NE 5-6. ISOL SHOWERS. SEA 2-3 M. =
TONKIN= N TO NE 5-6. ISOL SHOWERS. SEA 2-3 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
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    • 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 09:30 HKT 11/Oct/2018

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 9:30 a.m. on 11 October 2018

    Warnings:
    Strong winds in all areas.

    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, occasionally force 6.
    One or two rain patches.
    Moderate to rough seas.

    Nan'ao:
    Northeast force 6 to 7.
    Rough seas.

    Shanwei:
    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 force 4
      Visibility 24 Kilometres

    Shantou Wind west force 1
      Visibility 30 Kilometres

    Dongsha Wind northeast force 4
      Visibility 10 Kilometres

    Huangmaozhou Wind northeast force 3

    Macau Wind north force 4
      Visibility 27 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 09:00 HKT 11/OCT/2018
    (Next update at 12:30 HKT 11/OCT/2018)
    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:  020/10-15
       OFFSHORE:  020/15-20                            22-26
   B.   2000 FT:  050/15-20                            18
   C.   5000 FT:  040/10                               14
   D.  10000 FT:  280/15                               7
   E.  18000 FT:  280/30                               MS5
   F.  24000 FT:  270/40                               MS15
   G.  30000 FT:  280/50                               MS29
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      CLOUDY.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 2000 FT  SCT 4000 FT.
   K. VISIBILITY    : 7 KM.
   L. 0 DEG. C LEVEL: 15000 FT      10 DEG. C LEVEL(S) : 7600 FT
   M. TURBULENCE    : MOD OFFSHORE AND NEAR HILLS.
   N. SEA STATE     : 2.0 M         SEA TEMPERATURE    : 26 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE TO FRESH NORTHEASTERLY WINDS,
     OCCASIONALLY STRONG OFFSHORE.  MAINLY CLOUDY
     WITH A FEW RAIN PATCHES AND LOCALIZED MIST.=

    ===================================================================
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 11/Oct/2018 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     29.2 C
Minimum Air Temperature                     22.5 C
Grass Minimum Temperature                   22.6 C
Relative Humidity                        70 - 96 Percent
Rainfall                                    42.8 mm 
Total rainfall since 1st January          2021.6 mm
Against an average of                     2275.8 mm

Other Stations                Min                  Max
King's Park                  22.3 C               28.4 C
Wong Chuk Hang               22.0 C               28.3 C
Ta Kwu Ling                  21.5 C               27.7 C
Lau Fau Shan                 21.6 C               29.8 C
Tai Po                       21.5 C               29.5 C
Sha Tin                      22.5 C               28.8 C
Tuen Mun                     22.6 C               30.4 C
Tseung Kwan O                21.4 C               28.9 C
Sai Kung                     22.4 C               28.1 C
Cheung Chau                  21.1 C               32.1 C
Chek Lap Kok                 22.5 C               29.7 C
Tsing Yi                     21.9 C               28.9 C
Shek Kong                    21.5 C               29.8 C
Tsuen Wan Ho Koon            20.8 C               27.6 C
Tsuen Wan Shing Mun Valley   21.5 C               29.5 C
Hong Kong Park               21.5 C               27.4 C
Shau Kei Wan                 22.2 C               28.6 C
Kowloon City                 22.1 C               28.5 C
Happy Valley                 23.1 C               29.1 C
Wong Tai Sin                 22.4 C               29.0 C
Stanley                      23.2 C               30.2 C
Kwun Tong                    22.5 C               30.4 C
Sham Shui Po                 22.5 C               29.3 C
Kai Tak Runway Park          23.0 C               28.8 C
Yuen Long Park               21.9 C               29.7 C
Tai Mei Tuk               21.4 C               30.9 C

Duration of sunshine (King's Park):              1.6 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 Oct 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                           0.10
Tap Mun                             0.10
Kat O                               0.11
Yuen Ng Fan                         0.13
Tai Mei Tuk                         0.13
Sha Tau Kok                         0.11
Kwun Tong                           0.13
Sai Wan Ho                          0.09
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 10 Oct
     2003copy right image | Important notices | Privacy policy Last revision date: <11 Oct 2018> 

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