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Bulletin issued at 11:02 HKT 26/Oct/2018

At 11 a.m. at the Hong Kong Observatory the air temperature was 27 degrees Celsius and the relative humidity 71 per cent.
During the past hour the mean UV Index recorded at King's Park was 4. The intensity of UV radiation was moderate.

The air temperatures at other places were:

King's Park 28 degrees;
Wong Chuk Hang 28 degrees;
Ta Kwu Ling 29 degrees;
Lau Fau Shan 26 degrees;
Tai Po 27 degrees;
Sha Tin 29 degrees;
Tuen Mun 29 degrees;
Tseung Kwan O 29 degrees;
Sai Kung 27 degrees;
Cheung Chau 29 degrees;
Chek Lap Kok 27 degrees;
Tsing Yi 27 degrees;
Shek Kong 29 degrees;
Tsuen Wan Ho Koon 27 degrees;
Tsuen Wan Shing Mun Valley 30 degrees;
Hong Kong Park 28 degrees;
Shau Kei Wan 28 degrees;
Kowloon City 30 degrees;
Happy Valley 29 degrees;
Wong Tai Sin 29 degrees;
Stanley 28 degrees;
Kwun Tong 29 degrees;
Sham Shui Po 29 degrees;
Kai Tak Runway Park 30 degrees;
Yuen Long Park 29 degrees;
Tai Mei Tuk 29 degrees.


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


Climatological Information for 26 Oct

Regional Weather in Hong Kong

Information on Tropical Cyclones

Hong Kong Climatology


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Bulletin updated at 10:45 HKT 26/Oct/2018

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

A cold front over the northern part of southern China is moving southwards. It is expected to reach the coastal areas tonight.

At 10 a.m., Super Typhoon Yutu was centred about 630 kilometres northwest of Guam. It is forecast to move west at about 22 kilometres per hour across the western North Pacific in the general direction of the seas east of Luzon.

Weather forecast for today

Fine apart from relatively low visibility in some areas. Becoming cloudy with one or two rain patches in the afternoon. Light winds, becoming moderate northerlies later.

Outlook : Winds strengthening from the north tomorrow. Fine and dry early next week, and cooler in the morning and at night.


(The above forecast period is valid up to 23:59 HKT today, 26/10/2018; 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 26/Oct/2018

GALE WARNING AREAS: TAIWAN STRAIT, BASHI AND BALINTANG.

GENERAL SITUATION AT 252100 UTC:
COLD FRONT 25N 105E 25N 110E 27N 115E S 10KT.

MARINE FORECAST FOR 24 HOURS FROM 260100 UTC:

HONG KONG= E 3-4, N TO NE UP TO 6 LATER. DOWN TO 4000 M IN MIST PATCHES OR SOME HAZE. A FEW RAIN PATCHES LATER. SEA UP TO 3 M LATER. SWELL NE UP TO 2 M. TEMP 28-24 C. =
KWANGTUNG= E 4-5, N TO NE UP TO 7 LATER. DOWN TO 4000 M IN MIST PATCHES OR SOME HAZE. RAIN PATCHES LATER. SEA UP TO 4 M. SWELL NE 2 M. =
TAIWAN STRAIT= NE 5-6, UP TO 8 LATER. RAIN PATCHES. SEA UP TO 6 M. SWELL NE UP TO 3 M. =
BASHI= NE 5-6, UP TO 8 LATER. RAIN PATCHES. SEA UP TO 6 M. SWELL NE UP TO 3 M. =
PRATAS= NE 4-5, UP TO 7 LATER. RAIN PATCHES. SEA UP TO 4 M. SWELL NE 2 M. =
BALINTANG= NE 5-6, UP TO 8 LATER. RAIN PATCHES. SEA UP TO 6 M. SWELL NE UP TO 3 M. =
SCARBOROUGH= NE 5-6. LGT RAIN PATCHES. SEA 2-3 M. SWELL NE UP TO 2 M. =
PARACEL= E 4-5, N TO NE UP TO 6 LATER. RAIN PATCHES. SEA UP TO 3 M. SWELL NE UP TO 2 M. =
TONKIN= E 4-5, N TO NE UP TO 6 LATER. ISOL SHOWER AND TS. SEA UP TO 3 M. SWELL NE UP TO 2 M. =
DANANG= E 4-5, N TO NE UP TO 6 LATER. ISOL SHOWERS AND TS. SEA UP TO 3 M. SWELL NE 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
  • 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 09:30 HKT 26/Oct/2018

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 9:30 a.m. on 26 October 2018

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

    Weather Situation:
    A cold front over the northern part of southern China is moving southwards. It is expected to reach the south China coastal waters later.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    East force 3 to 4, becoming north to northeast up to force 6 later.
    Visibility relatively low in some areas. One or two rain patches later.
    Slight to moderate seas, becoming rough later.

    Nan'ao:
    East force 4 to 5, becoming north to northeast up to force 8 later.
    Moderate seas, becoming very rough later.

    Shanwei:
    East force 4 to 5, becoming north to northeast up to force 7 later.
    Moderate seas, becoming rough later.

    South of Hong Kong and Shangchuan Dao:
    East force 4 to 5, becoming north to northeast up to force 6 later.
    Moderate seas, becoming rough later.

    Outlook for the next 48 hours
    North to northeasterly winds of force 6 to 7, occasionally force 8.

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

    Waglan Island Wind north-northeast force 1
      Visibility 12 Kilometres

    Shantou Wind south-southeast force 1
      Visibility 4500 Metres in mist

    Dongsha Wind east-northeast force 2
      Visibility 10 Kilometres

    Huangmaozhou Wind north-northeast force 2

    Macau Wind southeast force 1
      Visibility 7 Kilometres

    Xisha Wind east-northeast force 2
      Visibility 30 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 09:30 HKT 26/OCT/2018
    (Next update at 12:30 HKT 26/OCT/2018)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     NIL
II.  SYNOPSIS OF THE WEATHER SITUATION :
     A COLD FRONT OVER THE NORTHERN PART OF SOUTHERN
     CHINA IS MOVING SOUTHWARDS. IT IS EXPECTED TO
     REACH THE COASTAL AREAS TONIGHT.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1000 TO 2000 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  VRB/5
                  BECMG 360/10-15
       OFFSHORE:  060/5-10
                  BECMG 360/15-20                      25-29
   B.   2000 FT:  360/5-10
                  BECMG 020/15-20                      20
   C.   5000 FT:  360/10-15                            17
   D.  10000 FT:  300/15                               10
   E.  18000 FT:  270/25                               MS2
   F.  24000 FT:  250/25                               MS14
   G.  30000 FT:  250/20                               MS26
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      2300-2500 FT
   I. WEATHER       : 
      SUNNY PERIODS. LOCALISED MIST/HAZE. A FEW RAIN
      PATCHES LATER.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 2000 FT SCT 5000 FT.
   K. VISIBILITY    : 7 KM. TEMPO 4000 M IN MIST/HAZE/RAIN.
   L. 0 DEG. C LEVEL: 16500 FT      10 DEG. C LEVEL(S) : 10000 FT
   M. TURBULENCE    : MOD OFFSHORE AND NEAR HILLS
   N. SEA STATE     : 1.0-2.5 M     SEA TEMPERATURE    : 26 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE NORTHERLY WINDS, FRESH OFFSHORE AND ON
     HIGH GROUND. MAINLY CLOUDY WITH A FEW RAIN
     PATCHES AND LOCALISED MIST AT FIRST.=

    ===================================================================
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 12:30 HKT on 20 Oct 18

    VHHK SIGMET 1 VALID 200040/200440 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N1706 E11418 - N1642 E11400 - N1930 E11130 - N2042 E11130 - N2012 E11242 - N1706 E11418 TOP FL450 MOV WNW 10KT NC= VHHK SIGMET 2 VALID 200440/200840 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N1718 E11430 - N1642 E11400 - N1930 E11130 - N2042 E11130 - N2024 E11300 - N1718 E11430 TOP FL480 MOV NW 05KT 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 26/Oct/2018 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     27.7 C
Minimum Air Temperature                     24.4 C
Grass Minimum Temperature                   22.9 C
Relative Humidity                        70 - 84 Percent
Rainfall                                       0 mm 
Total rainfall since 1st January          2077.6 mm
Against an average of                     2323.1 mm

Other Stations                Min                  Max
King's Park                  23.5 C               27.8 C
Wong Chuk Hang               22.4 C               28.3 C
Ta Kwu Ling                  22.7 C               29.9 C
Lau Fau Shan                 22.4 C               29.3 C
Tai Po                       22.4 C               26.6 C
Sha Tin                      22.6 C               28.2 C
Tuen Mun                     23.4 C               28.6 C
Tseung Kwan O                21.8 C               27.3 C
Sai Kung                     23.0 C               26.5 C
Cheung Chau                  22.5 C               28.7 C
Chek Lap Kok                 24.2 C               28.9 C
Tsing Yi                     23.1 C               29.1 C
Shek Kong                    21.9 C               28.7 C
Tsuen Wan Ho Koon            21.3 C               28.1 C
Tsuen Wan Shing Mun Valley   21.8 C               29.7 C
Hong Kong Park               23.5 C               27.6 C
Shau Kei Wan                 22.8 C               26.3 C
Kowloon City                 23.4 C               29.1 C
Happy Valley                 23.3 C               28.5 C
Wong Tai Sin                 23.3 C               27.8 C
Stanley                      23.6 C               26.9 C
Kwun Tong                    23.6 C               26.7 C
Sham Shui Po                 23.7 C               28.8 C
Kai Tak Runway Park          24.5 C               26.7 C
Yuen Long Park               22.3 C               28.7 C
Tai Mei Tuk               23.0 C               28.5 C

Duration of sunshine (King's Park):              7.0 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 (25 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 25 Oct
     2003copy right image | Important notices | Privacy policy Last revision date: <26 Oct 2018> 

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