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Automatic Regional Weather Forecast in Hong Kong & Pearl River Delta Region

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Weather Information for South China Coastal Waters

Bulletin issued at 13:31 HKT 12/Sep/2016

At 1 p.m. at the Hong Kong Observatory the air temperature was 32 degrees Celsius and the relative humidity 70 per cent.
During the past hour the mean UV Index recorded at King's Park was 11. The intensity of UV radiation was extreme. The public is advised to avoid prolonged exposure under the sun to prevent damage to skin and eyes.

Tropical Cyclone Meranti is expected to edge closer to the coast of southern China mid-week this week, bringing windy weather and squally showers to the region during the Mid-Autumn Festival and the day after. There will also be swells. Please note that the change in weather may affect the outdoor activities during the Mid-Autumn Festival and the day after. Please refer to the latest weather forecast issued by the Observatory.

Please be reminded that:

The Very Hot Weather Warning was issued at 1:30 p.m. Very hot weather might cause adverse health effects. Members of the public should take care to avoid heatstroke.

The air temperatures at other places were:

King's Park 32 degrees;
Wong Chuk Hang // degrees;
Ta Kwu Ling 33 degrees;
Lau Fau Shan 33 degrees;
Tai Po 30 degrees;
Sha Tin 31 degrees;
Tuen Mun 32 degrees;
Tseung Kwan O 31 degrees;
Sai Kung 32 degrees;
Cheung Chau 29 degrees;
Chek Lap Kok 32 degrees;
Tsing Yi 31 degrees;
Shek Kong 34 degrees;
Tsuen Wan Ho Koon 31 degrees;
Tsuen Wan Shing Mun Valley 32 degrees;
Hong Kong Park 31 degrees;
Shau Kei Wan 30 degrees;
Kowloon City 32 degrees;
Happy Valley 33 degrees;
Wong Tai Sin 33 degrees;
Stanley 30 degrees;
Kwun Tong 31 degrees;
Sham Shui Po 31 degrees;
Kai Tak Runway Park 31 degrees;
Yuen Long Park 33 degrees.

Here is the information on Tropical Depression at noon:
Location: 14.0 degrees north, 111.5 degrees east.


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


Climatological Information for 12 Sep

Regional Weather in Hong Kong

Information on Tropical Cyclones

Hong Kong Climatology


Local Weather Forecast
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Bulletin updated at 12:45 HKT 12/Sep/2016

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

The anticyclone over southern China is bringing generally fine weather to the region.

At noon, Severe Typhoon Meranti was centred about 1070 kilometres east-southeast of Gaoxiong. It is forecast to move west-northwest at about 26 kilometres per hour in the general direction of the seas east of Luzon to Taiwan and continue to intensify. Meanwhile, the tropical depression over the southern part of the South China Sea was centred about 420 kilometres east-southeast of Da Nang. It is forecast to move west-northwest at about 16 kilometres per hour towards the central part of Vietnam.

Weather forecast for this afternoon and tonight

Mainly fine and hot. Light winds, becoming moderate easterly winds.

Outlook : Very hot in the next couple of days. Windy with squally showers during the Mid-Autumn Festival and the day after.


(The above forecast period is valid up to 23:59 HKT today, 12/09/2016; Regular update at : around 45 minutes past each hour, 16:15 HKT and 23:15 HKT)

Information on Tropical Cyclones

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MARINE FORECAST
Traditional Chinese Simplified Chinese

Marine Forecast

Weather Information for the Marine Community

Bulletin issued at 09:20 HKT 12/Sep/2016

N0 WARNING.

GENERAL SITUATION AT 112100 UTC:
LOW 1004 HPA 13N 113E WNW SLOWLY INTSF.

MARINE FORECAST FOR 24 HOURS FROM 120120 UTC:

HONG KONG= E 4-5. ISOL SHOWERS. SEA UP TO 2 M. TEMP 32-26 C. =
KWANGTUNG= E 4-5, 6 IN W LATER. ISOL SHOWERS AND TS IN W. SEA UP TO 3 M IN W LATER. =
TAIWAN STRAIT= NE 5-6, OCNL 7. ISOL SHOWERS. SEA 3 M. =
BASHI= E TO NE 5-6. ISOL SHOWERS AND TS. SEA 2-3 M. SWELL E TO NE 2 M. =
PRATAS= E TO NE 4-5. ISOL SHOWERS. SEA UP TO 2 M. =
BALINTANG= E TO NE 5-6. ISOL SHOWERS AND TS. SEA 2-3 M. SWELL E TO NE 2 M. =
SCARBOROUGH= SE 4, NE 4-5 LATER. ISOL SHOWERS. SEA UP TO 2 M. =
PARACEL= E 5-6, BEC 7. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 2-3 M, BEC 4 M. SWELL E 2 M. =
TONKIN= E TO NE 5-6, BEC 7. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 2-3 M, BEC 4 M. =
DANANG= E TO NE 6-7. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 3-4 M. SWELL E 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.


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    • 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 12:30 HKT 12/Sep/2016

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 12:30 p.m. on 12 September 2016

    Warnings:
    Strong winds in Shangchuan Dao.

    Weather Situation:
    An easterly airstream is affecting the south China coastal waters.

    At noon, Tropical Depression with maximum sustained winds of about 55 kilometres per hour near its centre was located at 14.0 degrees north, 111.5 degrees east. It is forecast to move west-northwest at about 16 kilometres per hour towards the central part of Vietnam. Meanwhile, Severe Typhoon Meranti with maximum sustained winds of about 175 kilometres per hour near its centre was located at 18.3 degrees north, 129.4 degrees east. It is forecast to move west-northwest at about 26 kilometres per hour in the general direction of the seas east of Luzon to Taiwan and continue to intensify.

    Area forecasts for the next 24 hours

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

    Nan'ao, Shanwei and South of Hong Kong:
    East force 4 to 5.
    Moderate seas.

    Shangchuan Dao:
    East force 4 to 5, force 6 later.
    Isolated showers and thunderstorms.
    Moderate to rough seas.

    Outlook for the next 48 hours
    Easterly winds of force 5 to 6, becoming north to northwesterly winds of force 7. Squally showers and thunderstorms.

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

    Waglan Island Wind northeast force 3
      Visibility 22 Kilometres

    Shantou Wind east force 2
      Visibility 30 Kilometres

    Dongsha Wind east-northeast force 3
      Visibility 10 Kilometres

    Huangmaozhou Wind east-northeast force 4

    Xisha Wind east force 4
      Visibility 28 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 11:15 HKT 12/SEP/2016
    (Next update at 17:30 HKT 12/SEP/2016)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     NIL.

II.  SYNOPSIS OF THE WEATHER SITUATION :
     AN EASTERLY AIRSTREAM IS AFFECTING THE SOUTH
     CHINA COASTAL AREAS.
     BESIDES, THE AREA OF LOW PRESSURE OVER THE
     SOUTHERN PART OF THE SOUTH CHINA SEA HAS
     INTENSIFIED INTO A TROPICAL DEPRESSION.  AT 10
     A.M., THE TROPICAL DEPRESSION WAS CENTRED NEAR
     13.6 DEGREES NORTH, 112.0 DEGREES EAST.  IT IS
     FORECAST TO MOVE WEST-NORTHWEST AT ABOUT 9 KNOTS
     TOWARDS THE CENTRAL PART OF VIETNAM.

III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1115 TO 2000 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  070/5-10
       OFFSHORE:  070/10-15                            29-32
   B.   2000 FT:  070/10-15                            25
   C.   5000 FT:  100/10                               20
   D.  10000 FT:  120/10                               12
   E.  18000 FT:  160/15                               MS2
   F.  24000 FT:  110/15                               MS14
   G.  30000 FT:  110/20                               MS26
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      MAINLY FINE.  ISOLATED SHOWERS LATER.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1500 FT.
   K. VISIBILITY    : 9 KM.  TEMPO 4000 M IN SHOWERS.
   L. 0 DEG. C LEVEL: 17000 FT      10 DEG. C LEVEL(S) : 11600 FT
   M. TURBULENCE    : NIL.
   N. SEA STATE     : 1.5 M         SEA TEMPERATURE    : 27 DEG

IV.  FURTHER OUTLOOK: 
     MODERATE EASTERLY WINDS, OCCASIONALLY FRESH
     OFFSHORE.  MAINLY FINE APART FROM ISOLATED
     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 12:50 HKT on 12 Sep 16

    VHHK SIGMET 1 VALID 120450/120850 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N1642 E11400 - N1906 E11154 - N1754 E11454 - N1642 E11400 TOP FL400 STNR 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

    Tropical Cyclone Warning |  Track and Positions of Tropical Cyclones
    Current Weather |  Local Weather Forecast |  9-day Weather Forecast
    South China Coastal Waters |  Marine Forecast
    Severe Weather Information Centre

    Bulletin issued at 12:30 HKT 12/Sep/2016


    Tropical Cyclone Warning

    At 120300 UTC, Tropical Depression over the South China Sea with central pressure 998 hectopascals was centred within 90 nautical miles of one four point zero degrees north (14.0 N) one one one point six degrees east (111.6 E) and is forecast to weaken and move west-northwest at about 8 knots for the next 24 hours.

    Maximum winds near the centre are estimated to be 30 knots.

    Radius of over 2 metre waves 120 nautical miles.

    Forecast position and intensity at 130300 UTC
    One five point nine degrees north (15.9 N)
    One zero seven point seven degrees east (107.7 E)
    Maximum winds 35 knots.

    Forecast position and intensity at 140300 UTC
    Dissipated over land.



    The Hong Kong Observatory's tropical cyclone warnings for shipping are issued about one and a half hours after the time of observation. They incorporate additional information derived from surface and upper-air data and may therefore be slightly different from the real-time satellite or radar-based positions given in the hourly bulletins for public.

    While the forecast positions and track indicate the most likely future path of the tropical cyclone, they may deviate from the actual path taken by the storm.

    Tropical Cyclone Track
    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 12/Sep/2016 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     31.6 C
Minimum Air Temperature                     25.9 C
Grass Minimum Temperature                   24.7 C
Relative Humidity                        73 - 96 Percent
Rainfall                                     6.6 mm 
Total rainfall since 1st January          2208.8 mm
Against an average of                     2031.2 mm

Other Stations                Min                  Max
King's Park                  25.0 C               31.6 C
Ta Kwu Ling                  24.1 C               31.9 C
Lau Fau Shan                 24.1 C               31.2 C
Tai Po                       24.3 C               30.1 C
Sha Tin                      23.8 C               30.9 C
Tuen Mun                     24.9 C               31.5 C
Tseung Kwan O                24.4 C               31.6 C
Sai Kung                     24.5 C               29.9 C
Cheung Chau                  24.8 C               29.4 C
Chek Lap Kok                 26.0 C               32.5 C
Tsing Yi                     24.8 C               32.2 C
Shek Kong                    23.7 C               33.3 C
Tsuen Wan Ho Koon            24.0 C               30.0 C
Tsuen Wan Shing Mun Valley   24.2 C               32.4 C
Hong Kong Park               24.8 C               30.9 C
Shau Kei Wan                 25.3 C               30.2 C
Kowloon City                 25.3 C               32.6 C
Happy Valley                 24.7 C               33.0 C
Wong Tai Sin                 24.7 C               33.3 C
Stanley                      25.6 C               31.4 C
Kwun Tong                    25.4 C               32.0 C
Sham Shui Po                 25.6 C               32.7 C
Kai Tak Runway Park          26.0 C               30.7 C
Yuen Long Park               23.9 C               32.4 C

Duration of sunshine (King's Park):              6.4 H
The mean UV index recorded at King's Park yesterday was 4,
the UV intensity was Moderate.
The maximum UV index for yesterday was 12.
 

Yesterday's (11 Sep 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                         0.12
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 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 11 Sep
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