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Bulletin issued at 13:02 HKT 23/Oct/2016

At 1 p.m. at the Hong Kong Observatory the air temperature was 28 degrees Celsius and the relative humidity 83 per cent.
During the past hour the mean UV Index recorded at King's Park was 5. The intensity of UV radiation was moderate.

The air temperatures at other places were:

King's Park 28 degrees;
Wong Chuk Hang 29 degrees;
Ta Kwu Ling 30 degrees;
Lau Fau Shan 29 degrees;
Tai Po 28 degrees;
Sha Tin 29 degrees;
Tuen Mun 30 degrees;
Tseung Kwan O 29 degrees;
Sai Kung 28 degrees;
Cheung Chau 28 degrees;
Chek Lap Kok 30 degrees;
Tsing Yi 30 degrees;
Shek Kong 30 degrees;
Tsuen Wan Ho Koon 28 degrees;
Tsuen Wan Shing Mun Valley 30 degrees;
Hong Kong Park 28 degrees;
Shau Kei Wan 28 degrees;
Kowloon City 29 degrees;
Happy Valley 30 degrees;
Wong Tai Sin 30 degrees;
Stanley 29 degrees;
Kwun Tong 29 degrees;
Sham Shui Po 31 degrees;
Kai Tak Runway Park 28 degrees;
Yuen Long Park 31 degrees.


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


Climatological Information for 23 Oct

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 23/Oct/2016

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

Showers are affecting the coastal areas of Guangdong. Locally, a few millimetres of rainfall were recorded over parts of Sai Kung this morning.

Weather forecast for this afternoon and tonight

Mainly cloudy with isolated showers. Sunny periods in the afternoon. Light winds.

Outlook : A few rain patches tomorrow. Becoming fine in the middle and latter parts of this week.


(The above forecast period is valid up to 23:59 HKT today, 23/10/2016; 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
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Marine Forecast

Weather Information for the Marine Community

Bulletin issued at 09:00 HKT 23/Oct/2016

N0 WARNING.

GENERAL SITUATION AT 222100 UTC:
A SOUTHEASTERLY AIRSTREAM IS GENERALLY AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 230100 UTC:

HONG KONG= SE 4. A FEW SHOWERS. DOWN TO 4000 M IN MIST PATCHES AT FIRST. TEMP 30-25 C. =
KWANGTUNG= SE 4-5, NE UP TO 6 IN E LATER. ISOL SHOWERS. SEA 2 M, UP TO 3 M LATER. SWELL S UP TO 2 M. =
TAIWAN STRAIT= SW 4-5, BEC NE 5-6. FINE. ISOL SHOWERS LATER. SEA 2 M, UP TO 3 M LATER. SWELL S UP TO 2 M. =
BASHI= S TO SW 5-6, NW 5 LATER. ISOL SHOWERS AND TS LATER. SEA UP TO 3 M. SWELL S UP TO 2 M. =
PRATAS= S TO SE 4-5, E 4-5 LATER. ISOL SHOWERS. SEA UP TO 2 M. SWELL S UP TO 2 M. =
BALINTANG= S 4-5, E 4-5 LATER. ISOL SHOWERS LATER. SEA UP TO 2 M. SWELL S UP TO 2 M. =
SCARBOROUGH= S TO SE 4-5, E 4-5 LATER. ISOL SHOWERS AND TS. SEA UP TO 2 M. SWELL S UP TO 2 M. =
PARACEL= SE 4-5. ISOL SHOWERS AND TS. SEA UP TO 2 M. =
TONKIN= E 4-5. ISOL SHOWERS AND TS. SEA UP TO 2 M. =
DANANG= SE 4-5. ISOL SHOWERS AND TS. SEA 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 12:30 HKT 23/Oct/2016

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 12:30 p.m. on 23 October 2016

    Warnings:
    Strong winds in Nan'ao.

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

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    Southeast force 4.
    Isolated showers and thunderstorms.
    Moderate seas.

    Nan'ao:
    Southeast force 4 to 5, becoming northeast up to force 6 later.
    Moderate seas, becoming rough later.

    Shanwei, South of Hong Kong and Shangchuan Dao:
    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 east-northeast force 2
      Visibility 9 Kilometres

    Shantou Wind west-southwest force 2
      Visibility 30 Kilometres

    Dongsha Wind east-southeast force 2
      Visibility 10 Kilometres

    Huangmaozhou Wind east-southeast force 1

    Xisha Wind northeast force 2
      Visibility 24 Kilometres

  • Explanation of Seas or Sea Waves
  • Explanation of Swells
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  • 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 09:30 HKT 23/OCT/2016
    (Next update at 17:30 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 1000 TO 2000 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  120/5-10
       OFFSHORE:  140/10                               26-31
   B.   2000 FT:  160/10                               23
   C.   5000 FT:  180/10                               19
   D.  10000 FT:  200/15                               12
   E.  18000 FT:  200/15                               -1
   F.  24000 FT:  160/10                               MS12
   G.  30000 FT:  160/10                               MS25
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL
   I. WEATHER       : 
      MAINLY FINE APART FROM A FEW SHOWERS. LOCALIZED MIST AT
      FIRST.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1500 FT
   K. VISIBILITY    : 8 KM. TEMPO 4000 M IN SHOWERS / MIST.
   L. 0 DEG. C LEVEL: 17000 FT      10 DEG. C LEVEL(S) : 11200 FT
   M. TURBULENCE    : NIL
   N. SEA STATE     : 1.0-1.5 M     SEA TEMPERATURE    : 26 DEG
IV.  FURTHER OUTLOOK: 
     LIGHT WINDS. MAINLY CLOUDY 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.

    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 13:15 HKT on 23 Oct 16

    VHHK SIGMET 1 VALID 230520/230920 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N1642 E11400 - N1642 E11400 - N1806 E11242 - N1806 E11400 - N1642 E11400 TOP FL400 MOV W 10KT 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

    There is no tropical cyclone warning for shipping*.




    *Tropical cyclone warnings for shipping are issued by the Hong Kong Observatory for tropical cyclones located within the area bounded by 105E and 125E , 10N and 30N.




    For other tropical cyclone related information, please visit the World Meteorological Organization Web Site - Severe Weather Information Centre.

    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 23/Oct/2016 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     29.4 C
Minimum Air Temperature                     26.1 C
Grass Minimum Temperature                   24.6 C
Relative Humidity                        72 - 93 Percent
Rainfall                                     1.9 mm 
Total rainfall since 1st January          2888.4 mm
Against an average of                     2320.7 mm

Other Stations                Min                  Max
King's Park                  25.5 C               29.5 C
Wong Chuk Hang               24.4 C               28.1 C
Ta Kwu Ling                  24.5 C               32.2 C
Lau Fau Shan                 25.3 C               29.8 C
Tai Po                       24.9 C               30.3 C
Sha Tin                      24.4 C               30.7 C
Tuen Mun                     26.0 C               30.7 C
Tseung Kwan O                24.5 C               30.5 C
Sai Kung                     25.3 C               29.6 C
Cheung Chau                  25.4 C               29.9 C
Chek Lap Kok                 26.8 C               31.3 C
Tsing Yi                     25.0 C               30.3 C
Shek Kong                    24.7 C               32.1 C
Tsuen Wan Ho Koon            24.4 C               28.4 C
Tsuen Wan Shing Mun Valley   24.2 C               31.5 C
Hong Kong Park               25.4 C               29.7 C
Shau Kei Wan                 25.3 C               30.2 C
Kowloon City                 25.6 C               31.7 C
Happy Valley                 25.3 C               30.0 C
Wong Tai Sin                 25.5 C               29.9 C
Stanley                      25.1 C               29.4 C
Kwun Tong                    26.1 C               31.2 C
Sham Shui Po                 26.2 C               30.5 C
Kai Tak Runway Park          26.3 C               31.3 C
Yuen Long Park               25.6 C               31.3 C

Duration of sunshine (King's Park):              5.0 H
The mean UV index recorded at King's Park yesterday was 2,
the UV intensity was Low.
The maximum UV index for yesterday was 7.
 

Yesterday's (22 Oct 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 22 Oct
     2003copy right image | Important notices | Privacy policy Last revision date: <23 Oct 2016> 

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