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Bulletin issued at 17:02 HKT 22/Oct/2016

At 5 p.m. at the Hong Kong Observatory the air temperature was 29 degrees Celsius and the relative humidity 72 per cent.
During the past hour the mean UV Index recorded at King's Park was 0.8. The intensity of UV radiation was low.

The air temperatures at other places were:

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


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


Climatological Information for 22 Oct

Regional Weather in Hong Kong

Information on Tropical Cyclones

Hong Kong Climatology


Local Weather Forecast
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Local Weather Forecast

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

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Bulletin updated at 16:45 HKT 22/Oct/2016

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

A southerly airstream is bringing showers to the coast of Guangdong.

Weather forecast for tonight and tomorrow

Mainly cloudy with one or two showers. Sunny periods tomorrow. Temperatures will range between 26 and 30 degrees. Light to moderate south to southwesterly winds.

Outlook : A few rain patches on Monday. Becoming fine in the following couple of days.


(The above forecast period is valid up to 23:59 HKT tomorrow, 23/10/2016; Regular update at : around 45 minutes past each hour, 16:15 HKT and 23:15 HKT)

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Weather Information for Aviation

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MARINE FORECAST
Traditional Chinese Simplified Chinese

Marine Forecast

Weather Information for the Marine Community

Bulletin issued at 09:00 HKT 22/Oct/2016

N0 WARNING.

GENERAL SITUATION AT 212100 UTC:
A SOUTHERLY AIRSTREAM IS GENERALLY AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 220100 UTC:

HONG KONG= SW 4-5, UP TO 6 AT FIRST. ISOL SHOWERS AND TS. SEA 2 M, UP TO 3 M AT FIRST. SWELL E 2-3 M, S 3 M. TEMP 30-25 C. =
KWANGTUNG= S TO SW 4-5, UP TO 6 AT FIRST. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 2 M, UP TO 3 M AT FIRST. SWELL E TO NE 3-5 M, S TO SW 5-7 M. =
TAIWAN STRAIT= S TO SW 5-6. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 2-3 M. SWELL S 5 M. =
BASHI= S TO SW 4-5, UP TO 6 AT FIRST. ISOL SHOWERS AND TS. SEA 2 M, UP TO 3 M AT FIRST. SWELL S TO SW 3-5 M. =
PRATAS= S TO SW 4-5, UP TO 6 AT FIRST. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 2 M, UP TO 3 M AT FIRST. SWELL E TO NE 3 M, S TO SW 5-7 M. =
BALINTANG= S 4-5, UP TO 6 AT FIRST. ISOL SHOWERS AND TS. SEA 2 M, UP TO 3 M AT FIRST. SWELL S TO SW 3-5 M. =
SCARBOROUGH= S 4-5, UP TO 6 AT FIRST. ISOL SHOWERS AND TS. SEA 2 M, UP TO 3 M AT FIRST. SWELL S TO SW 2-3 M. =
PARACEL= SW 4-5, BEC SE UP TO 6. ISOL SHOWERS AND TS. SEA 2 M, BEC 3 M. SWELL E TO NE 3-5 M, S TO SW 5-7 M. =
TONKIN= SW 4-5, BEC SE 4-5. ISOL SHOWERS AND TS. SEA UP TO 2 M. =
DANANG= SW 4-5, BEC SE 4-5. ISOL SHOWERS AND TS. SEA 2 M. SWELL E TO 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 16:30 HKT 22/Oct/2016

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 4:30 p.m. on 22 October 2016

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

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    South to southwest force 4.
    One or two showers.
    Moderate seas.

    Nan'ao:
    South to southwest force 4 to 5.
    Isolated showers and thunderstorms.
    Moderate seas.

    Shanwei and South of Hong Kong:
    South force 4 to 5.
    Isolated showers and thunderstorms.
    Moderate seas.

    Shangchuan Dao:
    South to southeast force 4 to 5.
    Isolated showers and thunderstorms.
    Moderate seas.

    Outlook for the next 48 hours
    East to southeasterly winds of force 4 to 5. Isolated showers and thunderstorms.

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

    Waglan Island Wind southwest force 2
      Visibility 16 Kilometres

    Shantou Wind southwest force 2
      Visibility 30 Kilometres

    Dongsha Wind south force 2
      Visibility 10 Kilometres

    Huangmaozhou Wind south force 1

    Macau Wind south-southeast force 2
      Visibility 13 Kilometres

    Xisha Wind south-southwest force 2
      Visibility 30 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 22/OCT/2016
    (Next update at 01:30 HKT 23/OCT/2016)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     NIL.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     A SOUTHERLY AIRSTREAM IS AFFECTING THE SOUTH
     CHINA COASTAL AREAS.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1800 TO 0400 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  180/5-10
       OFFSHORE:  180/10                               29-26
   B.   2000 FT:  200/10-15                            22
   C.   5000 FT:  180/15                               18
   D.  10000 FT:  200/15-20                            11
   E.  18000 FT:  220/15                               0
   F.  24000 FT:  200/10                               MS10
   G.  30000 FT:  200/10                               MS26
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      MAINLY CLOUDY WITH A FEW SHOWERS AT FIRST.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1500 FT SCT 4000 FT
   K. VISIBILITY    : 9 KM. TEMPO 4000 M IN SHOWERS.
   L. 0 DEG. C LEVEL: 18000 FT      10 DEG. C LEVEL(S) : 12400 FT
   M. TURBULENCE    : MOD NEAR HILLS AT FIRST
   N. SEA STATE     : 1.0-1.5 M     SEA TEMPERATURE    : 26 DEG
IV.  FURTHER OUTLOOK: 
     LIGHT WIND. SUNNY PERIODS WITH A FEW SHOWERS.
     LOCALISED MIST AT FIRST.=

    ===================================================================
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
    Traditional Chinese Simplified Chinese

    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 22:00 HKT on 21 Oct 16

    VHHK SIGMET 7 VALID 211400/211700 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N2206 E11300 - N2230 E11342 - N2342 E11730 - N2254 E11730 - N2112 E11254 - N2206 E11300 TOP FL400 MOV N 15KT WKN=

    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 21/Oct/2016


    Tropical Cyclone Warning

    Severe Tropical Storm Haima (1622) has weakened into a Tropical Storm with central pressure 988 hectopascals. At 211200 UTC, it was centred within 30 nautical miles of two four point three degrees north (24.3 N) one one four point nine degrees east (114.9 E) and is forecast to move north or north-northeast at about 15 knots for the next 12 hours.

    Maximum winds near the centre are estimated to be 45 knots.

    Radius of over 33 knot winds 90 nautical miles.
    Radius of over 2 metre waves 180 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 221200 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 22/Oct/2016 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     28.0 C
Minimum Air Temperature                     24.4 C
Grass Minimum Temperature                   24.6 C
Relative Humidity                        74 - 95 Percent
Rainfall                                    72.5 mm 
Total rainfall since 1st January          2886.5 mm
Against an average of                     2319.5 mm

Other Stations                Min                  Max
King's Park                  24.1 C               28.3 C
Wong Chuk Hang               23.9 C               28.0 C
Ta Kwu Ling                  24.3 C               26.9 C
Lau Fau Shan                 24.2 C               27.0 C
Tai Po                       23.8 C               27.1 C
Sha Tin                      24.3 C               27.6 C
Tuen Mun                     24.9 C               27.4 C
Tseung Kwan O                24.1 C               27.0 C
Sai Kung                     24.5 C               29.0 C
Cheung Chau                  23.9 C               26.9 C
Chek Lap Kok                 25.3 C               28.2 C
Tsing Yi                     23.9 C               28.5 C
Shek Kong                    24.4 C               26.6 C
Tsuen Wan Ho Koon            23.5 C               26.4 C
Tsuen Wan Shing Mun Valley   23.8 C               28.6 C
Hong Kong Park               23.9 C               27.8 C
Shau Kei Wan                 23.8 C               28.1 C
Kowloon City                 23.8 C               28.1 C
Happy Valley                 25.2 C               28.6 C
Wong Tai Sin                 24.1 C               28.0 C
Stanley                      24.1 C               29.3 C
Kwun Tong                    24.4 C               27.8 C
Sham Shui Po                 24.0 C               28.9 C
Kai Tak Runway Park          24.7 C               28.5 C
Yuen Long Park               24.8 C               27.1 C

Duration of sunshine (King's Park):              0 H
The mean UV index recorded at King's Park yesterday was 0.2,
the UV intensity was Low.
The maximum UV index for yesterday was 0.7.
 

Yesterday's (21 Oct 2016) average ambient gamma radiation
dose rate taken outdoors in Hong Kong ranged from 0.10 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                           0.10
Tap Mun                             0.10
Kat O                               0.10
Yuen Ng Fan                         0.14
Tai Mei Tuk                         0.14
Sha Tau Kok                         0.12
Kwun Tong                           0.13
Sai Wan Ho                          0.11
King's Park                         0.15
Tsim Bei Tsui                       0.14
Cape D'Aguilar                      0.15
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 21 Oct
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