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Bulletin issued at 17:02 HKT 12/Oct/2018

At 5 p.m. at the Hong Kong Observatory the air temperature was 25 degrees Celsius and the relative humidity 70 per cent.
During the past hour the mean UV Index recorded at King's Park was 0.7. The intensity of UV radiation was low.

The air temperatures at other places were:

King's Park 24 degrees;
Wong Chuk Hang 24 degrees;
Ta Kwu Ling 25 degrees;
Lau Fau Shan 24 degrees;
Tai Po 24 degrees;
Sha Tin 24 degrees;
Tuen Mun 25 degrees;
Tseung Kwan O 24 degrees;
Sai Kung 25 degrees;
Cheung Chau 23 degrees;
Chek Lap Kok 25 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 24 degrees;
Shau Kei Wan 24 degrees;
Kowloon City 24 degrees;
Happy Valley 25 degrees;
Wong Tai Sin 24 degrees;
Stanley 24 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 12 Oct

Regional Weather in Hong Kong

Information on Tropical Cyclones

Hong Kong Climatology


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Bulletin updated at 16:45 HKT 12/Oct/2018

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

The northeast monsoon is affecting southern China.

Weather forecast for tonight and tomorrow

Mainly cloudy. Slightly cooler tomorrow morning with a minimum temperature of around 22 degrees. Sunny periods during the day with a maximum temperature of about 27 degrees. Moderate to fresh easterly winds, occasionally strong offshore.

Outlook : Mainly cloudy in the following couple of days. There will be showers midweek next week.


(The above forecast period is valid up to 23:59 HKT tomorrow, 13/10/2018; 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 12/Oct/2018

GALE WARNING AREAS: KWANGTUNG, TAIWAN STRAIT, BASHI, PRATAS AND BALINTANG.

GENERAL SITUATION AT 112100 UTC:
THE NORTHEAST MONSOON IS AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 120100 UTC:

HONG KONG= E TO NE 6. RAIN PATCHES. SEA 3 M. SWELL NE 2 M. TEMP 26-23 C. =
KWANGTUNG= E TO NE 6-7, OCNL 8. RAIN PATCHES. SEA UP TO 6 M. SWELL NE 2 M. =
TAIWAN STRAIT= NE 7-8. RAIN PATCHES. SEA 4-6 M. SWELL NE 2-3 M. =
BASHI= NE 6-7, OCNL 8. RAIN PATCHES. SEA UP TO 6 M. SWELL NE 2-3 M. =
PRATAS= NE 6-7, OCNL 8. RAIN PATCHES. SEA UP TO 6 M. SWELL NE 2-3 M. =
BALINTANG= NE 6-7, OCNL 8. RAIN PATCHES. SEA UP TO 6 M. SWELL NE 2-3 M. =
SCARBOROUGH= NE 6-7. CLD. SEA 3-4 M. SWELL NE 2-3 M. =
PARACEL= E TO NE 6-7. RAIN PATCHES. SEA 3-4 M. SWELL NE 2 M. =
TONKIN= E TO NE 5-6. RAIN PATCHES. SEA 2-3 M. =
DANANG= E TO NE 5-6, OCNL 7. RAIN PATCHES. SEA UP TO 4 M. SWELL NE 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
  • 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 16:30 HKT 12/Oct/2018

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 4:30 p.m. on 12 October 2018

    Warnings:
    Gale force winds in Nan'ao, Shanwei and south of Hong Kong. Strong winds in Hong Kong adjacent waters 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:
    East force 6, occasionally force 7.
    One or two rain patches.
    Rough seas.

    Nan'ao, Shanwei and South of Hong Kong:
    East to northeast force 6 to 7, occasionally force 8.
    Rough to very rough seas.

    Shangchuan Dao:
    East to northeast force 6 to 7.
    Rough seas.

    Outlook for the next 48 hours
    Easterly winds of force 5 to 6, up to force 7 at first.

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

    Waglan Island Wind east-northeast force 4
      Visibility 16 Kilometres

    Shantou Wind east force 2
      Visibility 30 Kilometres

    Dongsha Wind northeast force 4
      Visibility 10 Kilometres

    Huangmaozhou Wind east force 5

    Macau Wind north-northeast force 2
      Visibility 11 Kilometres

    Xisha Wind east-northeast force 3
      Visibility 20 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 12/OCT/2018
    (Next update at 01:30 HKT 13/OCT/2018)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     STRONG WINDS AND SEV TURB.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     THE NORTHEAST MONSOON IS AFFECTING SOUTHERN
     CHINA.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1800 TO 0400 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  080/10-15
       OFFSHORE:  090/20-25                            25-22
   B.   2000 FT:  090/15-20                            18
   C.   5000 FT:  100/5                                14
   D.  10000 FT:  270/15                               5
   E.  18000 FT:  270/25                               MS6
   F.  24000 FT:  300/30                               MS15
   G.  30000 FT:  300/45                               MS32
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      MAINLY CLOUDY.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 2000 FT  SCT 4000 FT.
   K. VISIBILITY    : 9 KM.
   L. 0 DEG. C LEVEL: 14500 FT      10 DEG. C LEVEL(S) : 8000 FT
   M. TURBULENCE    : MOD TO SEV OFFSHORE.  MOD NEAR HILLS.
   N. SEA STATE     : 3.0-4.0 M     SEA TEMPERATURE    : 27 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE TO FRESH EASTERLY WINDS, OCCASIONALLY
     STRONG OFFSHORE.  MAINLY CLOUDY WITH SUNNY
     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.

    sigmet
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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 12/Oct/2018 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     24.7 C
Minimum Air Temperature                     22.3 C
Grass Minimum Temperature                   22.3 C
Relative Humidity                        69 - 79 Percent
Rainfall                                       0 mm 
Total rainfall since 1st January          2021.6 mm
Against an average of                     2279.9 mm

Other Stations                Min                  Max
King's Park                  21.8 C               24.8 C
Wong Chuk Hang               22.3 C               25.6 C
Ta Kwu Ling                  20.7 C               23.2 C
Lau Fau Shan                 20.6 C               22.3 C
Tai Po                       20.7 C               23.7 C
Sha Tin                      21.5 C               24.2 C
Tuen Mun                     21.8 C               24.0 C
Tseung Kwan O                21.1 C               25.0 C
Sai Kung                     21.7 C               23.9 C
Cheung Chau                  20.6 C               25.3 C
Chek Lap Kok                 22.3 C               24.8 C
Tsing Yi                     22.4 C               24.8 C
Shek Kong                    20.9 C               23.3 C
Tsuen Wan Ho Koon            20.0 C               22.7 C
Tsuen Wan Shing Mun Valley   21.1 C               24.9 C
Hong Kong Park               22.0 C               24.9 C
Shau Kei Wan                 21.8 C               26.3 C
Kowloon City                 21.3 C               24.9 C
Happy Valley                 22.4 C               26.0 C
Wong Tai Sin                 21.8 C               25.2 C
Stanley                      22.6 C               26.0 C
Kwun Tong                    21.7 C               25.3 C
Sham Shui Po                 21.7 C               25.7 C
Kai Tak Runway Park          22.5 C               25.3 C
Yuen Long Park               21.2 C               23.6 C
Tai Mei Tuk               21.0 C               25.3 C

Duration of sunshine (King's Park):              0.3 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 5.
 

Yesterday's (11 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                           0.09
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                        0.15

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 11 Oct
     2003copy right image | Important notices | Privacy policy Last revision date: <12 Oct 2018> 

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