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Bulletin issued at 17:15 HKT 04/Oct/2016

At 5 p.m. at the Hong Kong Observatory the air temperature was 29 degrees Celsius and the relative humidity 74 per cent.
During the past hour the mean UV Index recorded at King's Park was 1. The intensity of UV radiation was low.

The air temperatures at other places were:

King's Park 29 degrees;
Wong Chuk Hang 29 degrees;
Ta Kwu Ling 29 degrees;
Lau Fau Shan 25 degrees;
Tai Po 29 degrees;
Sha Tin 29 degrees;
Tuen Mun 29 degrees;
Tseung Kwan O 27 degrees;
Sai Kung 29 degrees;
Cheung Chau 28 degrees;
Chek Lap Kok 31 degrees;
Tsing Yi 30 degrees;
Shek Kong 27 degrees;
Tsuen Wan Ho Koon 28 degrees;
Tsuen Wan Shing Mun Valley 29 degrees;
Hong Kong Park 28 degrees;
Shau Kei Wan 28 degrees;
Kowloon City 29 degrees;
Happy Valley 30 degrees;
Wong Tai Sin 29 degrees;
Stanley 28 degrees;
Kwun Tong 29 degrees;
Sham Shui Po 30 degrees;
Kai Tak Runway Park 29 degrees;
Yuen Long Park 27 degrees.

Between 3:45 and 4:45 p.m., lightning was detected within New Territories West. The rainfall recorded in various regions were:

Yuen Long 0 to 46 mm;
Tuen Mun 0 to 3 mm.


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


Climatological Information for 4 Oct

Regional Weather in Hong Kong

Information on Tropical Cyclones

Hong Kong Climatology


Local Weather Forecast
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Bulletin updated at 16:45 HKT 04/Oct/2016

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

An area of low pressure over southwest of Hong Kong is moving away from the territory gradually.

At 4 p.m., Super Typhoon Chaba was centred about 490 kilometres southwest of Nagasaki. It is forecast to move north at about 25 kilometres per hour across the East China Sea, in the general direction of Korea Peninsula.

Weather forecast for tonight and tomorrow

Mainly cloudy with a few showers. Isolated thunderstorms at first. Sunny intervals during the day tomorrow. Temperatures will range between 26 and 30 degrees. Moderate east to northeasterly winds.

Outlook : Sunny periods on Thursday. More showery towards the weekend.


(The above forecast period is valid up to 23:59 HKT tomorrow, 05/10/2016; 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 04/Oct/2016

N0 WARNING.

GENERAL SITUATION AT 032100 UTC:
LOW 1006 HPA 21N 114E QSTNR INTST NC.

MARINE FORECAST FOR 24 HOURS FROM 040100 UTC:

HONG KONG= E 4-5. ISOL SHOWERS AND TS. SEA UP TO 2 M. TEMP 30-26 C. =
KWANGTUNG= E TO NE 4-5. ISOL SHOWERS AND TS. SEA UP TO 2 M. =
TAIWAN STRAIT= NE 4-5. ISOL SHOWERS AND TS. SEA UP TO 2 M. SWELL NE 2 M. =
BASHI= E TO NE 4, OCNL 5. ISOL SHOWERS AND SQUALLY TS. SEA UP TO 2 M. SWELL NE 2-3 M. =
PRATAS= E 4, OCNL 5. ISOL SHOWERS AND TS. SEA UP TO 2 M. =
BALINTANG= E TO NE 4, OCNL 5. ISOL SHOWERS AND SQUALLY TS. SEA UP TO 2 M. SWELL NE 2-3 M. =
SCARBOROUGH= SE 4, OCNL 5. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 2 M. =
PARACEL= E TO SE 4-5. ISOL SHOWERS AND SQUALLY TS. SEA UP TO 2 M. =
TONKIN= E TO NE 4-5. ISOL SHOWERS AND TS. SEA UP TO 2 M. =
DANANG= E TO NE 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
  • 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 04/Oct/2016

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 4:30 p.m. on 04 October 2016

    Weather Situation:
    An area of low pressure is bringing unsettled weather to the coastal waters of Guangdong.

    At 4 p.m., Super Typhoon Chaba with maximum sustained winds of about 195 kilometres per hour near its centre was located at 29.9 degrees north, 125.9 degrees east. It is forecast to move north at about 25 kilometres per hour across the East China Sea.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    East to northeast force 4 to 5.
    Isolated showers and thunderstorms.
    Moderate seas.

    Nan'ao and Shanwei:
    East to northeast force 4 to 5.
    Isolated showers and thunderstorms.
    Moderate seas.

    South of Hong Kong and Shangchuan Dao:
    East to northeast force 4 to 5.
    Isolated squally showers and thunderstorms.
    Moderate seas.

    Outlook for the next 48 hours
    East to northeasterly winds of force 5 to 6. Isolated showers and thunderstorms.

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

    Waglan Island Wind east force 3
      Visibility 21 Kilometres

    Shantou Wind southeast force 2
      Visibility 30 Kilometres

    Dongsha Wind east-northeast force 3
      Visibility 10 Kilometres

    Huangmaozhou Wind east-northeast force 5

    Macau Wind east force 2
      Visibility 27 Kilometres

    Xisha Wind north force 1
      Visibility 21 Kilometres in showers

  • Explanation of Seas or Sea Waves
  • Explanation of Swells
  • Descriptive Terms of Wind Speeds
  • Visibility Readings in Hong Kong Waters
  • Map showing forecast areas
  • Tidal Information

    • WEATHER FORECAST FOR LOCAL AVIATION
    Traditional Chinese Simplified Chinese

    Weather Forecast for Local Aviation

    Bulletin issued at 17:30 HKT 04/OCT/2016
    (Next update at 01:30 HKT 05/OCT/2016)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     ISOL CUNIM/TS AND ASSOCIATED HAZARDS.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     AN AREA OF LOW PRESSURE IS BRINGING UNSETTLED
     WEATHER TO THE COASTAL WATERS OF GUANGDONG.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1800 TO 0400 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  080/5-10
                  TEMPO VRB/15G25 IN TS
       OFFSHORE:  080/10-15                            29-26
   B.   2000 FT:  080/10-15                            22
   C.   5000 FT:  060/15                               19
   D.  10000 FT:  080/10                               11
   E.  18000 FT:  250/10                               MS1
   F.  24000 FT:  240/10                               MS11
   G.  30000 FT:  220/10                               MS25
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      MAINLY CLOUDY. A FEW SHOWERS AND ISOLATED
      THUNDERSTORMS AT FIRST.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 3000 FT.  TEMPO FEW CB 1000 FT SCT 2000 FT.
   K. VISIBILITY    : 10 KM.  TEMPO 4000 M IN SHOWERS.  
                      TEMPO 2000 M IN THUNDERSTORMS.
   L. 0 DEG. C LEVEL: 17000 FT      10 DEG. C LEVEL(S) : 10800 FT
   M. TURBULENCE    : MOD TO SEV NEAR CUNIM/TS.
   N. SEA STATE     : 1.0-1.5 M     SEA TEMPERATURE    : 28 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE NORTHEASTERLY WINDS.  
     SUNNY INTERVALS AND A FEW SHOWERS.=

    ===================================================================
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 15:19 HKT on 04 Oct 16

    VHHK SIGMET 2 VALID 040720/041120 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N2112 E11318 - N2154 E11442 - N2124 E11500 - N2042 E11330 - N2112 E11318 TOP FL450 MOV W 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 04/Oct/2016 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     28.3 C
Minimum Air Temperature                     26.6 C
Grass Minimum Temperature                   26.0 C
Relative Humidity                        77 - 87 Percent
Rainfall                                     0.2 mm 
Total rainfall since 1st January          2360.2 mm
Against an average of                     2246.3 mm

Other Stations                Min                  Max
King's Park                  26.0 C               28.3 C
Ta Kwu Ling                  24.5 C               29.8 C
Lau Fau Shan                 25.1 C               32.3 C
Tai Po                       25.4 C               27.8 C
Sha Tin                      26.2 C               28.6 C
Tuen Mun                     25.5 C               30.8 C
Tseung Kwan O                25.0 C               28.2 C
Sai Kung                     26.3 C               28.6 C
Cheung Chau                  25.4 C               28.0 C
Chek Lap Kok                 26.9 C               32.2 C
Tsing Yi                     26.3 C               29.4 C
Shek Kong                    25.0 C               30.5 C
Tsuen Wan Ho Koon            24.7 C               28.4 C
Tsuen Wan Shing Mun Valley   25.0 C               30.0 C
Hong Kong Park               25.9 C               29.7 C
Shau Kei Wan                 25.6 C               29.4 C
Kowloon City                 26.0 C               29.1 C
Happy Valley                 26.7 C               29.9 C
Wong Tai Sin                 26.2 C               30.0 C
Stanley                      26.3 C               28.5 C
Kwun Tong                    26.0 C               28.9 C
Sham Shui Po                 26.4 C               29.5 C
Kai Tak Runway Park          26.6 C               29.7 C
Yuen Long Park               25.6 C               31.8 C

Duration of sunshine (King's Park):              1.2 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 (03 Oct 2016) average ambient gamma radiation
dose rate taken outdoors in Hong Kong ranged from 0.08 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                           0.08
Tap Mun                             0.09
Kat O                               0.09
Yuen Ng Fan                         0.11
Tai Mei Tuk                         0.13
Sha Tau Kok                         0.10
Kwun Tong                           0.11
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 during
the period 1987-2015, the background ambient gamma radiation
levels may vary between 0.06 and 0.30 microsievert per hour.

    2. The extent of health effects to a person as a result of
exposure to radiation is expressed by a physical quantity
called equivalent dose, in unit of sievert.  Protective
action may be required if there is an increase in the
ambient gamma dose rate above background such that the total
additional dose is expected to exceed 5000 microsieverts in
a relatively short period of time. For example, a dose of
5000 microsieverts may be reached when the ambient gamma
dose rate is 1000 microsieverts per hour (several thousand
times above background) and lasts for 5 hours.

    3. The readings of ambient gamma radiation level from
instrument are expressed in unit of gray, which is
numerically equal to the gamma dose expressed in sievert.
    Climatological Information for 03 Oct
     2003copy right image | Important notices | Privacy policy Last revision date: <04 Oct 2016> 

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