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

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Bulletin issued at 00:02 HKT 26/Aug/2016

At midnight at the Hong Kong Observatory the air temperature was 29 degrees Celsius and the relative humidity 79 per cent.

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 29 degrees;
Wong Chuk Hang 27 degrees;
Ta Kwu Ling 28 degrees;
Lau Fau Shan 29 degrees;
Tai Po 28 degrees;
Sha Tin 28 degrees;
Tuen Mun 28 degrees;
Tseung Kwan O 27 degrees;
Sai Kung 28 degrees;
Cheung Chau 28 degrees;
Chek Lap Kok 30 degrees;
Tsing Yi 27 degrees;
Shek Kong 28 degrees;
Tsuen Wan Ho Koon 27 degrees;
Tsuen Wan Shing Mun Valley 28 degrees;
Hong Kong Park 28 degrees;
Shau Kei Wan 27 degrees;
Kowloon City 29 degrees;
Happy Valley 29 degrees;
Wong Tai Sin 28 degrees;
Stanley 27 degrees;
Kwun Tong 29 degrees;
Sham Shui Po 29 degrees;
Kai Tak Runway Park 28 degrees;
Yuen Long Park 29 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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Bulletin updated at 00:00 HKT 26/Aug/2016

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

An upper-air anticyclone continued to bring generally fine weather to the coast of Guangdong yesterday. Locally, it was fine and very hot. Temperatures generally rose to above 33 degrees over the territory in the afternoon. A broad trough of low pressure will bring showers to Guangdong over the weekend.

At 11 p.m. last night, Severe Typhoon Lionrock was centred about 440 kilometres southeast of Okinawa. It is forecast to move slowly, lingering over the seas east of the Ryukyu Islands.

Weather forecast for Hong Kong (Friday, 26 Aug 2016)

Mainly fine at first. Sunny periods with some haze during the day. Very hot with temperatures ranging between 27 and 33 degrees. A few showers and thunderstorms later. Light to moderate northwesterly winds.

Outlook : More showery in the following couple of days. Mainly fine on coming Monday and Tuesday with slightly lower morning temperatures.


(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 21:00 HKT 25/Aug/2016

N0 WARNING.

GENERAL SITUATION AT 250900 UTC:
A SOUTHWESTERLY AIRSTREAM IS GENERALLY AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 251300 UTC:

HONG KONG= W TO NW 3-4. ISOL SHOWERS. TEMP 27-33 C. =
KWANGTUNG= W TO SW 4. ISOL SHOWERS AND TS. =
TAIWAN STRAIT= SW 4-5, NW 4-5 LATER. ISOL SHOWERS. SEA UP TO 2 M. =
BASHI= W 4-5, OCNL 6. ISOL SHOWERS AND TS. SEA UP TO 3 M. =
PRATAS= SW 4-5. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 2 M. =
BALINTANG= W TO SW 5-6. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 2-3 M. =
SCARBOROUGH= SW 5, BEC 6. BEC DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 2 M, BEC 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 SW 4. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. =
DANANG= W TO SW 4. 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 23:30 HKT 25/Aug/2016

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 11:30 p.m. on 25 August 2016

    Weather Situation:
    A southwesterly 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.
    Some haze, isolated showers.
    Slight to moderate seas.

    Nan'ao, Shanwei and South of Hong Kong:
    West to southwest force 4.
    Isolated showers and thunderstorms.
    Moderate seas.

    Shangchuan Dao:
    West to southwest force 4.
    Isolated squally showers and thunderstorms.
    Moderate seas.

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

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

    Waglan Island Wind west-northwest force 1
      Visibility 13 Kilometres

    Shantou Wind southwest force 1
      Visibility 20 Kilometres

    Dongsha Wind south-southeast force 2
      Visibility 10 Kilometres

    Huangmaozhou Wind southeast force 2

    Macau Wind south force 1
      Visibility 8 Kilometres

    Xisha Wind west force 3
      Visibility 17 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 17:30 HKT 25/AUG/2016
    (Next update at 01:30 HKT 26/AUG/2016)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     NIL.

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 1800 TO 0400 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  100/5-10 BEC 290/5-10
       OFFSHORE:  100/10-15 BEC 290/10                 32-27
   B.   2000 FT:  100/10-15 BEC 290/10                 25
   C.   5000 FT:  050/10                               22
   D.  10000 FT:  070/15                               14
   E.  18000 FT:  070/10                               0
   F.  24000 FT:  090/15                               MS11
   G.  30000 FT:  080/20                               MS25
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      MAINLY FINE.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 2000 FT.
   K. VISIBILITY    : 7 KM.
   L. 0 DEG. C LEVEL: 18000 FT      10 DEG. C LEVEL(S) : 13000 FT
   M. TURBULENCE    : NIL.
   N. SEA STATE     : 1.0-1.5 M     SEA TEMPERATURE    : 27 DEG

IV.  FURTHER OUTLOOK: 
     LIGHT TO MODERATE NORTHWESTERLY WINDS.  HAZY
     WITH SUNNY PERIODS.=

    ===================================================================
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 16:30 HKT on 25 Aug 16

    VHHK SIGMET 2 VALID 250830/251230 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N1836 E11530 - N1712 E11424 - N1800 E11254 - N1930 E11130 - N2000 E11130 - N1836 E11530 TOP FL450 MOV W 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
     2003copy right image | Important notices | Privacy policy Last revision date: <26 Aug 2016> 

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