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Bulletin issued at 11:02 HKT 01/Oct/2016

At 11 a.m. at the Hong Kong Observatory the air temperature was 27 degrees Celsius and the relative humidity 92 per cent.
During the past hour the mean UV Index recorded at King's Park was 7. The intensity of UV radiation was high.

The air temperatures at other places were:

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

Between 9:45 and 10:45 a.m., the rainfall recorded in various regions were:

North District 0 to 3 mm;
Sai Kung 0 to 2 mm;
Tai Po 0 to 2 mm.


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


Climatological Information for 1 Oct

Regional Weather in Hong Kong

Information on Tropical Cyclones

Hong Kong Climatology


Local Weather Forecast
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Bulletin updated at 10:45 HKT 01/Oct/2016

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

A broad trough of low pressure is bringing thundery showers to the northern part of the South China Sea and the coast of Guangdong. Locally, more than 70 millimetres of rainfall were generally recorded over the urban areas and the eastern part of the New Territories this morning.

Tropical Storm Chaba has intensified into a severe tropical storm. At 10 a.m., Chaba was centred about 1350 kilometres southeast of Okinawa. It is forecast to move northwest at about 25 kilometres per hour across the western North Pacific in the general direction of the Ryukyu Islands.

Weather forecast for today

Sunny intervals with a few showers and isolated thunderstorms. Light to moderate northerly winds, becoming moderate easterlies.

Outlook : Showers tomorrow. Weather improving early next week.


(The above forecast period is valid up to 23:59 HKT today, 01/10/2016; Regular update at : around 45 minutes past each hour, 16:15 HKT and 23:15 HKT)

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MARINE FORECAST
Traditional Chinese Simplified Chinese

Marine Forecast

Weather Information for the Marine Community

Bulletin issued at 09:00 HKT 01/Oct/2016

N0 WARNING.

GENERAL SITUATION AT 302100 UTC:
AN EASTERLY AIRSTREAM IS GENERALLY AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 010100 UTC:

HONG KONG= N 4-5, BEC E 4-5. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA UP TO 2 M. TEMP 27-25 C. =
KWANGTUNG= N TO NE 4-5, BEC E TO NE 4-5. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA UP TO 2 M. =
TAIWAN STRAIT= NE 4-5, OCNL 6. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 2 M. =
BASHI= E TO SE 5-6. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 2-3 M. =
PRATAS= E TO SE 4-5. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA UP TO 2 M. =
BALINTANG= E TO SE 5-6. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 2-3 M. =
SCARBOROUGH= S TO SE 4-5. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 2 M. =
PARACEL= S TO SE 4-5. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA UP TO 2 M. =
TONKIN= NE 4-5. ISOL SHOWERS AND SQUALLY TS. SEA UP TO 2 M. =
DANANG= N TO NE 4-5. DOWN TO 2000 M IN SCT SQUALLY 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 10:25 HKT 01/Oct/2016

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 10:25 a.m. on 01 October 2016

    Weather Situation:
    A broad trough of low pressure is bringing unsettled weather to the northern part of the South China Sea and the coastal waters of Guangdong.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    North force 4 to 5, becoming east force 4 to 5.
    Isolated showers and thunderstorms.
    Moderate seas.

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

    South of Hong Kong:
    North force 4 to 5, becoming east force 4 to 5.
    Isolated showers and thunderstorms.
    Moderate seas.

    Shangchuan Dao:
    Northeast force 4 to 5.
    Isolated 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 4
      Visibility 17 Kilometres

    Shantou Wind calm
      Visibility 30 Kilometres

    Huangmaozhou Wind east-northeast force 4

    Macau Wind north force 2
      Visibility 5000 Metres

    Xisha Wind east force 2
      Visibility 30 Kilometres

  • 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 09:00 HKT 01/OCT/2016
    (Next update at 17:30 HKT 01/OCT/2016)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     ISOL CUNIM/TS AND ASSOCIATED HAZARDS.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     A BROAD TROUGH OF LOW PRESSURE IS BRINGING
     THUNDERY SHOWERS TO THE NORTHERN PART OF THE
     SOUTH CHINA SEA AND THE COAST OF GUANGDONG.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1000 TO 2000 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  090/10
                  TEMPO VRB/15G25 IN TS
       OFFSHORE:  100/10-15                            26-29
   B.   2000 FT:  110/10-15                            22
   C.   5000 FT:  140/15                               18
   D.  10000 FT:  150/15                               11
   E.  18000 FT:  170/15                               MS3
   F.  24000 FT:  180/10                               MS13
   G.  30000 FT:  180/10                               MS26
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      MAINLY CLOUDY WITH SHOWERS AND ISOLATED
      THUNDERSTORMS.  LOCALIZED MIST AT FIRST.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1000 FT SCT 1800 FT.  
      TEMPO FEW CB 800 FT  SCT 1500 FT BKN 4000 FT.
   K. VISIBILITY    : 7 KM.  TEMPO 3000 M IN SHOWERS/MIST.  
                      TEMPO 2500 M IN TS.
   L. 0 DEG. C LEVEL: 16000 FT      10 DEG. C LEVEL(S) : 10800 FT
   M. TURBULENCE    : MOD TO SEV NEAR CUNIM/TS, 
                      MOD OFFSHORE AND NEAR HILLS.
   N. SEA STATE     : 1.0-1.5 M     SEA TEMPERATURE    : 28 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE EASTERLY WINDS.  MAINLY CLOUDY WITH
     SHOWERS, ISOLATED THUNDERSTORMS 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 11:02 HKT on 01 Oct 16

    VHHK SIGMET 1 VALID 010305/010705 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N2100 E11730 - N2012 E11654 - N2036 E11600 - N2242 E11600 - N2318 E11730 - N2100 E11730 TOP FL400 MOV W 10KT 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 01/Oct/2016 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     26.4 C
Minimum Air Temperature                     24.1 C
Grass Minimum Temperature                   23.8 C
Relative Humidity                        73 - 83 Percent
Rainfall                                       0 mm 
Total rainfall since 1st January          2264.5 mm
Against an average of                     2233.1 mm

Other Stations                Min                  Max
King's Park                  23.3 C               27.5 C
Wong Chuk Hang               23.7 C               28.4 C
Ta Kwu Ling                  22.7 C               27.3 C
Lau Fau Shan                 22.3 C               26.0 C
Tai Po                       23.0 C               27.0 C
Sha Tin                      22.8 C               28.2 C
Tuen Mun                     22.9 C               26.8 C
Tseung Kwan O                21.9 C               28.8 C
Sai Kung                     23.3 C               27.9 C
Cheung Chau                  23.0 C               27.6 C
Chek Lap Kok                 23.3 C               25.5 C
Tsing Yi                     23.3 C               26.4 C
Shek Kong                    22.5 C               27.3 C
Tsuen Wan Ho Koon            21.8 C               26.1 C
Tsuen Wan Shing Mun Valley   22.7 C               27.4 C
Hong Kong Park               23.9 C               27.7 C
Shau Kei Wan                 23.9 C               28.0 C
Kowloon City                 22.8 C               29.1 C
Happy Valley                 24.0 C               28.7 C
Wong Tai Sin                 23.0 C               29.7 C
Stanley                      23.5 C               27.5 C
Kwun Tong                    23.3 C               29.1 C
Sham Shui Po                 23.3 C               28.4 C
Kai Tak Runway Park          23.9 C               28.2 C
Yuen Long Park               23.0 C               27.7 C

Duration of sunshine (King's Park):              2.5 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 7.
Sea surface temperature (Waglan Island):        28.0 C 

Yesterday's (30 Sep 2016) average ambient gamma radiation
dose rate taken outdoors in Hong Kong ranged from 0.08 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                           0.08
Tap Mun                             0.09
Kat O                               0.10
Yuen Ng Fan                         0.12
Tai Mei Tuk                         0.13
Sha Tau Kok                         0.11
Kwun Tong                           0.12
Sai Wan Ho                          0.09
King's Park                         0.15
Tsim Bei Tsui                       0.13
Cape D'Aguilar                      0.14
Chek Lap Kok                        0.15

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 30 Sep
     2003copy right image | Important notices | Privacy policy Last revision date: <01 Oct 2016> 

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