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

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Bulletin issued at 13:02 HKT 26/Aug/2016

At 1 p.m. at the Hong Kong Observatory the air temperature was 33 degrees Celsius and the relative humidity 63 per cent.
During the past hour the mean UV Index recorded at King's Park was 9. The intensity of UV radiation was very high.

Please be reminded that:

The Very Hot Weather Warning is now in force. 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 32 degrees;
Ta Kwu Ling 35 degrees;
Lau Fau Shan 32 degrees;
Tai Po 33 degrees;
Sha Tin 35 degrees;
Tuen Mun 34 degrees;
Tseung Kwan O 35 degrees;
Sai Kung 33 degrees;
Cheung Chau 31 degrees;
Chek Lap Kok 33 degrees;
Tsing Yi 32 degrees;
Shek Kong 34 degrees;
Tsuen Wan Ho Koon 31 degrees;
Tsuen Wan Shing Mun Valley 33 degrees;
Hong Kong Park 33 degrees;
Shau Kei Wan 32 degrees;
Kowloon City 34 degrees;
Happy Valley 34 degrees;
Wong Tai Sin 35 degrees;
Stanley 31 degrees;
Kwun Tong 34 degrees;
Sham Shui Po 33 degrees;
Kai Tak Runway Park 34 degrees;
Yuen Long Park 35 degrees.


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


Climatological Information for 26 Aug

Regional Weather in Hong Kong

Information on Tropical Cyclones

Hong Kong Climatology


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

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UV Index Forecast |  Weather Information for South China Coastal Waters

Bulletin updated at 12:45 HKT 26/Aug/2016

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

An upper-air anticyclone is bringing generally fine and very hot weather to the coast of Guangdong. Locally, temperatures over the territory generally rose to about 33 degrees around noon.

At noon, Severe Typhoon Lionrock was centred about 470 kilometres southeast of Okinawa. It is forecast to move slowly at first, lingering over the seas east of the Ryukyu Islands, and then move northeast later.

Weather forecast for this afternoon and tonight

Very hot with sunny periods and isolated showers in the afternoon. A few thunderstorms tonight. Light to moderate northwesterly winds.

Outlook : More showery in the next couple of days. Slightly lower morning temperatures on coming Monday and Tuesday.


(The above forecast period is valid up to 23:59 HKT today, 26/08/2016; 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 26/Aug/2016

N0 WARNING.

GENERAL SITUATION AT 252100 UTC:
LOW 1004 HPA 18N 114E QSTNR INTST NC

MARINE FORECAST FOR 24 HOURS FROM 260100 UTC:

HONG KONG= W TO NW 3-4. ISOL SHOWERS AND TS. TEMP 33-26 C. =
KWANGTUNG= W TO NW 4. ISOL SHOWERS AND TS. =
TAIWAN STRAIT= N TO NW 4-5. ISOL SHOWERS AND TS. SEA UP TO 2 M. =
BASHI= W 5-6. ISOL SHOWERS AND SQUALLY TS. SEA 2-3 M. =
PRATAS= SW 4-5. ISOL SHOWERS AND TS. SEA UP TO 2 M. =
BALINTANG= W 5-6. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 2-3 M. =
SCARBOROUGH= SW 5-6. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 2-3 M. =
PARACEL= W TO SW 4-5. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 2 M. =
TONKIN= W TO NW 4, BEC N 4-5. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. =
DANANG= W TO SW 4-5. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. =
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 12:30 HKT 26/Aug/2016

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 12:30 p.m. on 26 August 2016

    Weather Situation:
    A westerly airstream is generally affecting the south China coastal waters.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    West to northwest force 3 to 4.
    Isolated showers and thunderstorms.
    Slight to moderate seas.

    Nan'ao and Shanwei:
    West to southwest force 4.
    Isolated showers and thunderstorms.
    Moderate seas.

    South of Hong Kong and Shangchuan Dao:
    West to northwest force 4.
    Isolated showers and thunderstorms.
    Moderate seas.

    Outlook for the next 48 hours
    West to southwesterly winds of force 4 to 5, becoming northerly winds of force 4 to 5. Isolated squally showers and thunderstorms.

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

    Waglan Island Wind southwest force 3
      Visibility 21 Kilometres

    Shantou Wind west-southwest force 2
      Visibility 10 Kilometres

    Dongsha Wind west-southwest force 2
      Visibility 10 Kilometres

    Huangmaozhou Wind west force 2

    Macau Wind north-northeast force 1
      Visibility 12 Kilometres

    Xisha Wind west-southwest force 4
      Visibility 7 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 09:00 HKT 26/AUG/2016
    (Next update at 17:30 HKT 26/AUG/2016)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     ISOL CUNIM/TS AND ASSOCIATED HAZARDS.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     AN UPPER-AIR ANTICYCLONE IS BRINGING GENERALLY
     FINE WEATHER TO THE COAST OF GUANGDONG.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1000 TO 2000 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  290/5-10
                  TEMPO VRB/15G25 IN TS                30-34
   B.   2000 FT:  300/5-10                             25
   C.   5000 FT:  300/10                               21
   D.  10000 FT:  050/10                               12
   E.  18000 FT:  030/10                               MS2
   F.  24000 FT:  030/15                               MS13
   G.  30000 FT:  060/25                               MS26
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      SUNNY PERIODS WITH SOME HAZE DURING THE DAY. A
      FEW SHOWERS AND THUNDERSTORMS LATER.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 2500 FT. TEMPO FEW 1500 FT CB SCT 2500 FT BKN 4000 FT.
   K. VISIBILITY    : 7KM. TEMPO 4000 M IN HAZE/SHOWERS. 
                      TEMPO 2000 M IN TS.
   L. 0 DEG. C LEVEL: 19000 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    : 27 DEG
IV.  FURTHER OUTLOOK: 
     LIGHT TO MODERATE NORTHWESTERLY WINDS. MAINLY
     CLLOUDY WITH SHOWERS AND ISOLATED THUNDERSTORMS.=

    ===================================================================
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 12:00 HKT on 26 Aug 16

    VHHK SIGMET 2 VALID 260400/260800 VHHH- VHHK HONG KONG FIR EMBD TS FCST S OF N1830 TOP FL400 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

    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 21:30 HKT 19/Aug/2016


    Tropical Cyclone Warning

    At 191200 UTC, Tropical Storm Dianmu (1608) with central pressure 988 hectopascals was centred within 60 nautical miles of two zero point eight degrees north (20.8 N) one zero five point four degrees east (105.4 E) and is forecast to weaken and move west at about 14 knots for the next 24 hours.

    Maximum winds near the centre are estimated to be 35 knots.

    Radius of over 33 knot winds 60 nautical miles over eastern semicircle, 30 nautical miles elsewhere.
    Radius of over 2 metre waves 150 nautical miles.

    No further warnings on this Tropical Storm will be issued by the Hong Kong Observatory unless re-intensification takes place.

    Forecast position and intensity at 201200 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 26/Aug/2016 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     34.4 C
Minimum Air Temperature                     28.1 C
Grass Minimum Temperature                   27.1 C
Relative Humidity                        62 - 88 Percent
Rainfall                                       0 mm 
Total rainfall since 1st January          1929.0 mm
Against an average of                     1847.6 mm

Other Stations                Min                  Max
King's Park                  27.2 C               33.4 C
Wong Chuk Hang               26.6 C               34.2 C
Ta Kwu Ling                  25.5 C               34.7 C
Lau Fau Shan                 26.3 C               34.8 C
Tai Po                       26.7 C               32.6 C
Sha Tin                      26.3 C               34.6 C
Tuen Mun                     26.5 C               34.4 C
Tseung Kwan O                26.2 C               34.4 C
Sai Kung                     27.1 C               33.7 C
Cheung Chau                  26.6 C               31.1 C
Chek Lap Kok                 28.1 C               34.7 C
Tsing Yi                     26.7 C               33.7 C
Tsuen Wan Ho Koon            25.1 C               33.2 C
Tsuen Wan Shing Mun Valley   25.7 C               34.5 C
Hong Kong Park               27.4 C               33.9 C
Shau Kei Wan                 26.8 C               32.4 C
Kowloon City                 27.4 C               33.8 C
Happy Valley                 27.4 C               35.5 C
Wong Tai Sin                 27.4 C               35.8 C
Stanley                      27.4 C               33.1 C
Kwun Tong                    27.6 C               32.9 C
Sham Shui Po                 27.7 C               34.1 C
Kai Tak Runway Park          27.6 C               32.6 C
Yuen Long Park               25.7 C               35.5 C

Duration of sunshine (King's Park):              10.7 H
The mean UV index recorded at King's Park yesterday was 5,
the UV intensity was Moderate.
The maximum UV index for yesterday was 11.
 

Yesterday's (25 Aug 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                         0.12
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                        0.14

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 25 Aug
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