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

Local Weather Forecast | Regional Temperature Forecast in HK
9-day Weather Forecast | UV Index Forecast
Weather Information for South China Coastal Waters

Bulletin issued at 04:02 HKT 26/Aug/2017

At 4 a.m. at the Hong Kong Observatory the air temperature was 28 degrees Celsius and the relative humidity 85 per cent.

The air temperatures at other places were:

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

Here is the information on Tropical Storm Pakhar at 3 a.m.:
Location: 16.8 degrees north, 121.0 degrees east.


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


MARINE FORECAST
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Marine Forecast

Weather Information for the Marine Community

Bulletin issued at 21:00 HKT 25/Aug/2017

GALE WARNING AREAS: KWANGTUNG, BASHI, PRATAS, BALINTANG AND SCARBOROUGH.

GENERAL SITUATION AT 250900 UTC:
FOR DETAILS ON TROPICAL STORM PAKHAR (1714), PLEASE REFER TO THE 3-HRLY SHIPPING WARNINGS.

MARINE FORECAST FOR 24 HOURS FROM 251300 UTC:

HONG KONG= E 4-5, NE UP TO 6 LATER. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 3 M. SWELL S UP TO 2 M. TEMP 28-33 C. =
KWANGTUNG= E 5-6, UP TO 9 LATER. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 2-3 M, UP TO 8 M LATER. SWELL S 2 M, SE 3 M LATER. =
TAIWAN STRAIT= NE 4-5. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 2 M. SWELL S TO SW UP TO 2 M. =
BASHI= E 6-7, UP TO 9 LATER. DOWN TO 500 M IN FRQ HEAVY SQUALLY SHOWERS AND TS. SEA 3-4 M, UP TO 8 M LATER. SWELL S TO SW UP TO 2 M, SE 3 M LATER. =
PRATAS= E TO SE 5-6, CYCLONIC UP TO 9 LATER. DOWN TO 500 M IN FRQ HEAVY SQUALLY SHOWERS AND TS. SEA 2-3 M, UP TO 8 M LATER. SWELL S TO SW UP TO 2 M, SE 3 M LATER. =
BALINTANG= E 6-7, CYCLONIC UP TO 9 LATER. DOWN TO 500 M IN FRQ HEAVY SQUALLY SHOWERS AND TS. SEA 3-4 M, UP TO 8 M LATER. SWELL S TO SW UP TO 2 M, SE 3 M LATER. =
SCARBOROUGH= NE 7-8, BEC CYCLONIC UP TO 9. DOWN TO 500 M IN FRQ HEAVY SQUALLY SHOWERS AND TS. SEA 4-6 M, BEC 8 M. SWELL S TO SW UP TO 2 M, SE 3 M LATER. =
PARACEL= E 5-6. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 2-3 M. SWELL S 2 M. =
TONKIN= E TO SE 5-6. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 2-3 M. SWELL S TO SW 2 M. =
DANANG= E 5-6. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 2-3 M. SWELL S TO SW 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 03:30 HKT 26/Aug/2017

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 3:30 a.m. on 26 August 2017

    Warnings:
    Gale force winds in Nan'ao, Shanwei and south of Hong Kong. Strong winds in Hong Kong adjacent waters and Shangchuan Dao.

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

    At 3 a.m., Tropical Storm Pakhar with maximum sustained winds of about 75 kilometres per hour near its centre was located at 16.8 degrees north, 121.0 degrees east, it is forecast to move west-northwest at about 25 kilometres per hour across Luzon.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    East force 4 to 5, becoming northeast up to force 6 later.
    Isolated squally showers and thunderstorms.
    Moderate to rough seas.

    Nan'ao, Shanwei and South of Hong Kong:
    East force 5 to 6, up to force 9 later.
    Scattered squally showers and thunderstorms.
    Moderate to rough seas, becoming high seas later.

    Shangchuan Dao:
    East force 5 to 6.
    Scattered squally showers and thunderstorms.
    Moderate to rough seas.

    Outlook for the next 48 hours
    Easterly winds of force 8 to 9, becoming cyclonic winds up to force 11. Occasional heavy squally showers and thunderstorms.

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

    Waglan Island Wind north-northeast force 2
      Visibility 23 Kilometres

    Shantou Wind west-southwest force 1
      Visibility 30 Kilometres

    Macau Wind north force 2
      Visibility 25 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
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    Weather Forecast for Local Aviation

    Bulletin issued at 01:30 HKT 26/AUG/2017
    (Next update at 9:00-9:30 HKT 26/AUG/2017)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     ISOL CUNIM/TS AND ASSOCIATED HAZARDS.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     AN EASTERLY AIRSTREAM IS AFFECTING THE SOUTH
     CHINA COASTAL AREAS.
     AT 11 P.M. LAST NIGHT, TROPICAL STORM PAKHAR WAS
     LOCATED AT 16.2 DEGREES NORTH, 121.9 DEGREES
     EAST.  IT IS FORECAST TO MOVE WEST-NORTHWEST AT
     ABOUT 12 KNOTS ACROSS LUZON.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 0200 TO 1200 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  100/5-10
                  TEMPO VRB/15G25 IN TS
       OFFSHORE:  100/10-15                            26-34
   B.   2000 FT:  110/15                               25
   C.   5000 FT:  110/15                               20
   D.  10000 FT:  100/20                               12
   E.  18000 FT:  100/20                               MS2
   F.  24000 FT:  080/25                               MS13
   G.  30000 FT:  060/20                               MS25
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      MAINLY CLOUDY WITH A FEW ISOLATED SHOWERS AND
      THUNDERSTORMS
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1500 FT  SCT 2500 FT TEMPO FEW 800 FT CB
      SCT 2000 FT
   K. VISIBILITY    : 10 KM.  TEMPO 4000 M IN SHOWERS. TEMPO 2500 M IN TS
   L. 0 DEG. C LEVEL: 17000 FT      10 DEG. C LEVEL(S) : 11400 FT
   M. TURBULENCE    : MOD TO SEV NEAR CUNIM/TS, OFFSHORE AND  NEAR HILLS
   N. SEA STATE     : 1.0-1.5 M     SEA TEMPERATURE    : 27 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE TO FRESH EAST TO NORTHEASTERLY WINDS.
     SUNNY PERIODS 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.

    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 03:30 HKT 26/Aug/2017


    Tropical Cyclone Warning

    At 251800 UTC, Tropical Storm Pakhar (1714) with central pressure 992 hectopascals was centred within 90 nautical miles of one six point seven degrees north (16.7 N) one two one point two degrees east (121.2 E) and is forecast to move northwest at about 15 knots for the next 24 hours.

    Maximum winds near the centre are estimated to be 40 knots.

    Radius of over 33 knot winds 60 nautical miles.
    Radius of over 2 metre waves 120 nautical miles.

    Forecast position and intensity at 261800 UTC
    Two zero point two degrees north (20.2 N)
    One one five point four degrees east (115.4 E)
    Maximum winds 50 knots.

    Forecast position and intensity at 271800 UTC
    Two two point five degrees north (22.5 N)
    One one zero point two degrees east (110.2 E)
    Maximum winds 45 knots.

    Forecast position and intensity at 281800 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/2017 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     32.7 C
Minimum Air Temperature                     27.8 C
Grass Minimum Temperature                   27.4 C
Relative Humidity                        72 - 93 Percent
Rainfall                                     0.1 mm 
Total rainfall since 1st January          1974.5 mm
Against an average of                     1847.6 mm

Other Stations                Min                  Max
King's Park                  27.2 C               32.3 C
Wong Chuk Hang               27.4 C               32.1 C
Ta Kwu Ling                  25.8 C               32.5 C
Lau Fau Shan                 26.1 C               32.8 C
Tai Po                       26.6 C               30.6 C
Sha Tin                      27.1 C               32.1 C
Tuen Mun                     25.8 C               31.1 C
Tseung Kwan O                26.3 C               31.9 C
Sai Kung                     27.4 C               31.3 C
Cheung Chau                  26.2 C               32.8 C
Chek Lap Kok                 27.8 C               33.9 C
Tsing Yi                     27.4 C               33.1 C
Shek Kong                    25.5 C               33.0 C
Tsuen Wan Ho Koon            25.2 C               31.0 C
Tsuen Wan Shing Mun Valley   25.8 C               32.5 C
Hong Kong Park               27.7 C               32.2 C
Shau Kei Wan                 26.1 C               31.2 C
Kowloon City                 27.2 C               32.0 C
Happy Valley                 27.8 C               32.0 C
Wong Tai Sin                 26.9 C               31.7 C
Stanley                      27.0 C               30.8 C
Kwun Tong                    27.1 C               31.1 C
Sham Shui Po                 27.7 C               32.2 C
Kai Tak Runway Park          26.4 C               30.7 C
Yuen Long Park               26.4 C               34.4 C

Duration of sunshine (King's Park):              5.9 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 (25 Aug 2017) 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                             0.08
Kat O                               0.08
Yuen Ng Fan                         0.11
Tai Mei Tuk                         0.11
Sha Tau Kok                         0.10
Kwun Tong                           0.11
Sai Wan Ho                          0.09
King's Park                         0.14
Tsim Bei Tsui                       0.12
Cape D'Aguilar                      0.13
Chek Lap Kok                        0.14

Note

      

    1. From readings taken at various locations in Hong Kong during
the period 1987-2016, 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 2017> 

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