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Bulletin issued at 11:02 HKT 13/Oct/2016

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 5. The intensity of UV radiation was moderate.

The air temperatures at other places were:

King's Park 27 degrees;
Wong Chuk Hang 27 degrees;
Ta Kwu Ling 26 degrees;
Lau Fau Shan 27 degrees;
Tai Po 25 degrees;
Sha Tin 26 degrees;
Tuen Mun 27 degrees;
Tseung Kwan O 27 degrees;
Sai Kung 26 degrees;
Cheung Chau 25 degrees;
Chek Lap Kok 27 degrees;
Tsing Yi 27 degrees;
Shek Kong 26 degrees;
Tsuen Wan Ho Koon 26 degrees;
Tsuen Wan Shing Mun Valley 27 degrees;
Hong Kong Park 28 degrees;
Shau Kei Wan 27 degrees;
Kowloon City 27 degrees;
Happy Valley 28 degrees;
Wong Tai Sin 26 degrees;
Stanley 26 degrees;
Kwun Tong 27 degrees;
Sham Shui Po 27 degrees;
Kai Tak Runway Park 27 degrees;
Yuen Long Park 26 degrees.


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


Climatological Information for 13 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 13/Oct/2016

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

The northeast monsoon is affecting southern China. The area of low pressure south of Hainan Island is bringing unsettled weather to the region and moving to Vietnam gradually. Besides, the area of low pressure east of the Philippines has intensified into a tropical depression. At 10 a.m., the tropical depression was centred about 1050 kilometres east of Manila. It is forecast to move west at about 14 kilometres per hour towards Luzon.

Weather forecast for today

Mainly cloudy with sunny periods. Moderate to fresh east to northeasterly winds, occasionally strong offshore and on high ground.

Outlook : Mainly fine in the next couple of days.


(The above forecast period is valid up to 23:59 HKT today, 13/10/2016; 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 13/Oct/2016

N0 WARNING.

GENERAL SITUATION AT 122100 UTC:
A NORTHEAST MONSOON IS GENERALLY AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 130100 UTC:

HONG KONG= E TO NE 5-6, OCNL 7. CLD. SEA 3 M. TEMP 28-25 C. =
KWANGTUNG= E TO NE 6-7. RAIN PATCHES. SEA 3-4 M. SWELL NE 2 M. =
TAIWAN STRAIT= NE 6-7. RAIN PATCHES. SEA 3-4 M. SWELL NE 2 M. =
BASHI= E TO NE 5-6, OCNL 7. ISOL SHOWERS. SEA 3 M. SWELL NE 2 M. =
PRATAS= E TO NE 6-7. ISOL SHOWERS. SEA 3-4 M. SWELL NE 2 M. =
BALINTANG= E TO NE 5-6. ISOL SHOWERS. SEA 2-3 M. SWELL NE 2 M. =
SCARBOROUGH= E TO SE 4-5, OCNL 6. ISOL SHOWERS AND TS. SEA 2 M. SWELL NE 2 M. =
PARACEL= E TO NE 6-7. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 3-4 M. SWELL NE 2 M. =
TONKIN= NE 6-7. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 3-4 M. =
DANANG= NE 6-7. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 3-4 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 10:00 HKT 13/Oct/2016

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 10:00 a.m. on 13 October 2016

    Warnings:
    Strong winds in all areas.

    Weather Situation:
    The northeast monsoon is affecting the south China coastal waters. The area of low pressure south of Hainan Island is bringing unsettled weather to the region and moving to Vietnam gradually.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    East to northeast force 5 to 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.
    Rough seas.

    Shangchuan Dao:
    East to northeast force 6 to 7.
    Scattered squally showers and thunderstorms.
    Rough seas.

    Outlook for the next 48 hours
    East to northeasterly winds of force 5 to 6, up to force 7 at first. Isolated squally showers and thunderstorms.

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

    Waglan Island Wind north-northeast force 5
      Visibility 16 Kilometres

    Shantou Wind east-northeast force 2
      Visibility 30 Kilometres

    Dongsha Wind northeast force 4
      Visibility 10 Kilometres

    Huangmaozhou Wind east-northeast force 5

    Macau Wind north force 3
      Visibility 10 Kilometres

    Xisha Wind east-northeast force 3
      Visibility 1500 Metres 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 09:00 HKT 13/OCT/2016
    (Next update at 17:30 HKT 13/OCT/2016)
    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 1000 TO 2000 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  060/15-20
       OFFSHORE:  060/20-25                            25-30
   B.   2000 FT:  060/20-25                            20
   C.   5000 FT:  090/25                               15
   D.  10000 FT:  090/20                               11
   E.  18000 FT:  110/10                               MS2
   F.  24000 FT:  060/10                               MS14
   G.  30000 FT:  300/15-20                            MS26
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL
   I. WEATHER       : 
      MAINLY CLOUDY WITH SUNNY PERIODS. LOCALIZED
      MIST AT FIRST.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 2000 FT SCT 3500 FT
   K. VISIBILITY    : 9 KM. TEMPO 4000 M IN MIST.
   L. 0 DEG. C LEVEL: 16500 FT      10 DEG. C LEVEL(S) : 10400 FT
   M. TURBULENCE    : MOD TO SEV
   N. SEA STATE     : 2.0-3.0 M     SEA TEMPERATURE    : 27 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE TO FRESH EAST TO NORTHEASTERLY WINDS,
     STRONG OFFSHORE AND ON HIGH GROUND AT FIRST.
     MAINLY CLOUDY.=

    ===================================================================
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 11:30 HKT on 13 Oct 16

    VHHK SIGMET 1 VALID 130335/130735 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N1812 E11512 - N1642 E11400 - N1930 E11130 - N2018 E11130 - N2018 E11330 - N1812 E11512 TOP FL420 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.

    The latest report on Tropical Cyclone Aere broadcast by Dr LEE TSZ CHEUNG , Senior Scientific Officer of the Hong Kong Observatory at 6:18 p.m. on 08 Oct 2016.
    Listen Listen

    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 13/Oct/2016 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     25.8 C
Minimum Air Temperature                     23.0 C
Grass Minimum Temperature                   24.2 C
Relative Humidity                        76 - 91 Percent
Rainfall                                     0.9 mm 
Total rainfall since 1st January          2395.2 mm
Against an average of                     2282.3 mm

Other Stations                Min                  Max
King's Park                  22.1 C               25.5 C
Wong Chuk Hang               22.7 C               26.4 C
Ta Kwu Ling                  20.9 C               25.0 C
Lau Fau Shan                 20.8 C               25.4 C
Tai Po                       21.2 C               24.7 C
Sha Tin                      21.7 C               25.2 C
Tuen Mun                     21.1 C               24.9 C
Tseung Kwan O                21.5 C               24.7 C
Sai Kung                     21.6 C               24.9 C
Cheung Chau                  21.8 C               24.6 C
Chek Lap Kok                 22.3 C               26.1 C
Tsing Yi                     22.4 C               26.5 C
Shek Kong                    20.9 C               25.0 C
Tsuen Wan Ho Koon            21.2 C               25.9 C
Tsuen Wan Shing Mun Valley   22.0 C               26.8 C
Hong Kong Park               22.4 C               25.7 C
Shau Kei Wan                 22.0 C               25.7 C
Kowloon City                 21.6 C               25.9 C
Happy Valley                 23.3 C               26.5 C
Wong Tai Sin                 22.0 C               26.1 C
Stanley                      22.6 C               26.2 C
Kwun Tong                    22.2 C               25.4 C
Sham Shui Po                 21.9 C               26.4 C
Kai Tak Runway Park          22.9 C               26.4 C
Yuen Long Park               21.1 C               25.2 C

Duration of sunshine (King's Park):              0.1 H
The mean UV index recorded at King's Park yesterday was 1,
the UV intensity was Low.
The maximum UV index for yesterday was 3.
 

Yesterday's (12 Oct 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                         0.14
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 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 12 Oct
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