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Bulletin issued at 09:02 HKT 30/Sep/2016

At 9 a.m. at the Hong Kong Observatory the air temperature was 25 degrees Celsius and the relative humidity 76 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 25 degrees;
Wong Chuk Hang 25 degrees;
Ta Kwu Ling 24 degrees;
Lau Fau Shan 23 degrees;
Tai Po 24 degrees;
Sha Tin 24 degrees;
Tuen Mun 24 degrees;
Tseung Kwan O 25 degrees;
Sai Kung 25 degrees;
Cheung Chau 25 degrees;
Chek Lap Kok 24 degrees;
Tsing Yi 25 degrees;
Shek Kong 24 degrees;
Tsuen Wan Ho Koon 23 degrees;
Tsuen Wan Shing Mun Valley 24 degrees;
Hong Kong Park 25 degrees;
Shau Kei Wan 25 degrees;
Kowloon City 25 degrees;
Happy Valley 26 degrees;
Wong Tai Sin 25 degrees;
Stanley 25 degrees;
Kwun Tong 25 degrees;
Sham Shui Po 25 degrees;
Kai Tak Runway Park 26 degrees;
Yuen Long Park 24 degrees.

Between midnight and 9 a.m. the minimum temperature was 24.1 degrees Celsius at the Hong Kong Observatory.


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


Climatological Information for 30 Sep

Regional Weather in Hong Kong

Information on Tropical Cyclones

Hong Kong Climatology


Local Weather Forecast
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Bulletin updated at 08:45 HKT 30/Sep/2016

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

The northeast monsoon is bringing appreciably cooler weather to Guangdong. Locally, temperatures over the territory this morning were generally three to four degrees lower than those of yesterday. Meanwhile, rainbands are affecting the northern part of the South China Sea.

At 8 a.m., Tropical Storm Chaba was centred about 480 kilometres north of Yap. It is forecast to move west-northwest at about 18 kilometres per hour across the western North Pacific in the general direction of the seas east of Taiwan.

Weather forecast for today

Mainly cloudy with one or two showers. Cooler in the morning. Sunny periods during the day with a maximum temperature of about 28 degrees. Moderate northerly winds.

Outlook : Mainly cloudy with a few showers over the weekend.


(The above forecast period is valid up to 23:59 HKT today, 30/09/2016; 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 30/Sep/2016

N0 WARNING.

GENERAL SITUATION AT 292100 UTC:
LOW 1006 HPA 17N 113E QSTNR INTST NC.

MARINE FORECAST FOR 24 HOURS FROM 300100 UTC:

HONG KONG= N 4-5. ISOL SHOWERS. SEA UP TO 2 M. TEMP 28-24 C. =
KWANGTUNG= N 4-5, S TO SE 4-5 IN E. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS IN E. SEA UP TO 2 M. =
TAIWAN STRAIT= S 5-6, NE 4-5 LATER. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 2-3 M. =
BASHI= SE 4-5, BEC E 5-6. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 2-3 M. =
PRATAS= S TO SE 4-5, E 5 LATER. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA UP TO 2 M. =
BALINTANG= E TO SE 4-5. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 2 M. =
SCARBOROUGH= S 4-5. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 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 TS. SEA UP TO 2 M. =
DANANG= N 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 09:30 HKT 30/Sep/2016

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 9:30 a.m. on 30 September 2016

    Weather Situation:
    The northeast monsoon is affecting the south China coastal waters. Meanwhile, a trough of low pressure is bringing unsettled weather to the northern part of the South China Sea and the coastal waters of eastern Guangdong.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    North force 4 to 5.
    A few showers.
    Moderate seas.

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

    South of Hong Kong:
    North force 4 to 5.
    Scattered squally showers and thunderstorms.
    Moderate seas.

    Shangchuan Dao:
    North to 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 north force 2
      Visibility 11 Kilometres

    Shantou Wind south force 1
      Visibility 1900 Metres in showers

    Huangmaozhou Wind northwest force 4

    Macau Wind north-northwest force 2
      Visibility 19 Kilometres

    Xisha Wind west-southwest 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 09:30 HKT 30/SEP/2016
    (Next update at 17:30 HKT 30/SEP/2016)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     ISOL CUNIM/TS AND ASSOCIATED HAZARDS.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     THE NORTHEAST MONSOON IS AFFECTING THE COASTAL
     AREAS OF GUANGDONG.
     
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1000 TO 2000 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  350/10
                  TEMPO VRB/15G25 IN TS
       OFFSHORE:  350/10-15                            24-28
   B.   2000 FT:  350/10-15                            20
   C.   5000 FT:  200/10                               15
   D.  10000 FT:  180/20                               11
   E.  18000 FT:  180/10                               MS4
   F.  24000 FT:  180/10                               MS13
   G.  30000 FT:  090/10                               MS28
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      3200 - 4000 FT
   I. WEATHER       : 
      MAINLY CLOUDY WITH  A FEW ISOLATED SHOWERS . A
      FEW ISOLATED THUNDERSTORMS TO THE SOUTH.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 2000 FT SCT 3500 FT TEMPO FEW CB 800 FT SCT
      1200 FT BKN 5000 FT
   K. VISIBILITY    : 9 KM.  TEMPO 4000 M IN SHOWERS.
                     TEMPO 2000 M IN TS.
   L. 0 DEG. C LEVEL: 16500 FT      10 DEG. C LEVEL(S) : 11600 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 NORTHERLY WINDS. MAINLY CLOUDY WITH 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 07:40 HKT on 30 Sep 16

    VHHK SIGMET 9 VALID 292340/300340 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N2100 E11730 - N1900 E11548 - N1836 E11254 - N2224 E11442 - N2336 E11730 - N2100 E11730 TOP FL450 MOV N 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 30/Sep/2016 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     28.9 C
Minimum Air Temperature                     24.9 C
Grass Minimum Temperature                   24.6 C
Relative Humidity                        63 - 78 Percent
Rainfall                                     0.7 mm 
Total rainfall since 1st January          2264.5 mm
Against an average of                     2226.7 mm

Other Stations                Min                  Max
King's Park                  23.9 C               28.5 C
Wong Chuk Hang               24.7 C               29.3 C
Ta Kwu Ling                  23.1 C               28.4 C
Lau Fau Shan                 23.1 C               28.6 C
Tai Po                       23.4 C               28.7 C
Sha Tin                      23.6 C               29.0 C
Tuen Mun                     23.7 C               29.1 C
Tseung Kwan O                23.0 C               27.9 C
Sai Kung                     24.1 C               29.2 C
Cheung Chau                  23.4 C               28.1 C
Chek Lap Kok                 24.4 C               29.8 C
Tsing Yi                     24.0 C               29.3 C
Shek Kong                    23.1 C               28.6 C
Tsuen Wan Ho Koon            22.3 C               27.7 C
Tsuen Wan Shing Mun Valley   23.0 C               28.4 C
Hong Kong Park               24.3 C               28.8 C
Shau Kei Wan                 24.3 C               29.1 C
Kowloon City                 23.5 C               28.3 C
Happy Valley                 25.1 C               29.4 C
Wong Tai Sin                 23.7 C               28.9 C
Stanley                      24.6 C               29.0 C
Kwun Tong                    24.1 C               29.0 C
Sham Shui Po                 24.1 C               29.2 C
Kai Tak Runway Park          24.6 C               29.3 C
Yuen Long Park               23.7 C               29.2 C

Duration of sunshine (King's Park):              1.1 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 3.
Sea surface temperature (Waglan Island):        28.0 C 

Yesterday's (29 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                         0.10
Kwun Tong                           0.12
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 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 29 Sep
     2003copy right image | Important notices | Privacy policy Last revision date: <30 Sep 2016> 

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