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Bulletin issued at 17:02 HKT 27/Oct/2016

At 5 p.m. at the Hong Kong Observatory the air temperature was 29 degrees Celsius and the relative humidity 73 per cent.
During the past hour the mean UV Index recorded at King's Park was 0.7. The intensity of UV radiation was low.

The air temperatures at other places were:

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


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


Climatological Information for 27 Oct

Regional Weather in Hong Kong

Information on Tropical Cyclones

Hong Kong Climatology


Local Weather Forecast
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Bulletin updated at 16:45 HKT 27/Oct/2016

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

An upper-air anticyclone is bringing generally fine weather to southern China. Locally, it was sunny today. Temperatures over the territory rose to 30 degrees or above in the afternoon.

Weather forecast for tonight and tomorrow

Mainly fine. Temperatures will range between 25 and 30 degrees. Light to moderate easterly winds.

Outlook : Becoming cooler and winds will strengthen in the following few days.


(The above forecast period is valid up to 23:59 HKT tomorrow, 28/10/2016; Regular update at : around 45 minutes past each hour, 16:15 HKT and 23:15 HKT)

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MARINE FORECAST
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Marine Forecast

Weather Information for the Marine Community

Bulletin issued at 09:00 HKT 27/Oct/2016

N0 WARNING.

GENERAL SITUATION AT 262100 UTC:
AN EASTERLY AIRSTREAM IS AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 270100 UTC:

HONG KONG= E 4-5. FINE. SEA UP TO 2 M. TEMP 30-25 C. =
KWANGTUNG= E TO NE 4-5. FINE. SEA UP TO 2 M. =
TAIWAN STRAIT= NE 4-5. FINE. SEA UP TO 2 M. =
BASHI= E 5-6. ISOL SHOWERS. SEA 2-3 M. =
PRATAS= E 4-5, OCNL 6. FINE. SEA 2 M. =
BALINTANG= E 5-6. ISOL SHOWERS. SEA 2-3 M. =
SCARBOROUGH= E TO NE 4-5. ISOL SHOWERS. SEA UP TO 2 M. =
PARACEL= E 4-5. ISOL SHOWERS. SEA UP TO 2 M. =
TONKIN= E 4-5. ISOL SHOWERS. SEA UP TO 2 M. =
DANANG= E 4-5. ISOL SHOWERS. 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 16:30 HKT 27/Oct/2016

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 4:30 p.m. on 27 October 2016

    Warnings:
    Strong winds in Nan'ao, Shanwei and south of Hong Kong.

    Weather Situation:
    An easterly airstream is affecting the coastal waters of Guangdong.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    East force 4 to 5.
    Moderate seas.

    Nan'ao and Shanwei:
    East to northeast force 4 to 5, becoming force 6 later.
    Moderate seas, becoming rough seas later.

    South of Hong Kong:
    East force 4 to 5, becoming force 6 later.
    Moderate seas, becoming rough seas later.

    Shangchuan Dao:
    East force 4 to 5.
    Moderate seas.

    Outlook for the next 48 hours
    East to northeasterly winds of force 5 to 6, becoming force 7. Isolated showers and thunderstorms later.

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

    Waglan Island Wind east-northeast force 2
      Visibility 28 Kilometres

    Shantou Wind west-southwest force 2
      Visibility 24 Kilometres

    Dongsha Wind east-northeast force 3
      Visibility 10 Kilometres

    Huangmaozhou Wind east-northeast force 2

    Macau Wind east force 2
      Visibility 21 Kilometres

    Xisha Wind east-northeast 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 27/OCT/2016
    (Next update at 01:30 HKT 28/OCT/2016)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     NIL
II.  SYNOPSIS OF THE WEATHER SITUATION :
     AN EASTERLY AIRSTREAM IS AFFECTING THE COASTAL
     AREAS 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
       OFFSHORE:  080/10-15                            29-26
   B.   2000 FT:  120/10-15                            23
   C.   5000 FT:  120/15                               19
   D.  10000 FT:  150/15                               14
   E.  18000 FT:  140/15-20                            MS4
   F.  24000 FT:  160/10                               MS17
   G.  30000 FT:  210/15                               MS33
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      MAINLY FINE.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 2500 FT.
   K. VISIBILITY    : 9 KM.
   L. 0 DEG. C LEVEL: 17000 FT      10 DEG. C LEVEL(S) : 12000 FT
   M. TURBULENCE    : NIL
   N. SEA STATE     : 1.0-1.5 M     SEA TEMPERATURE    : 27 DEG
IV.  FURTHER OUTLOOK: 
     LIGHT TO MODERATE EASTERLY WINDS. MAINLY FINE.=

    ===================================================================
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 02:44 HKT on 24 Oct 16

    VHHK SIGMET 6 VALID 231845/232245 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N1942 E11624 - N1700 E11412 - N2100 E11312 - N2124 E11436 - N1942 E11624 TOP FL400 MOV NW 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 27/Oct/2016 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     30.0 C
Minimum Air Temperature                     25.7 C
Grass Minimum Temperature                   25.0 C
Relative Humidity                        71 - 93 Percent
Rainfall                                       0 mm 
Total rainfall since 1st January          2888.4 mm
Against an average of                     2326.1 mm

Other Stations                Min                  Max
King's Park                  24.9 C               30.4 C
Wong Chuk Hang               23.8 C               29.6 C
Ta Kwu Ling                  23.7 C               30.9 C
Lau Fau Shan                 23.9 C               32.0 C
Tai Po                       24.3 C               29.3 C
Sha Tin                      24.0 C               30.0 C
Tuen Mun                     24.7 C               30.7 C
Tseung Kwan O                24.0 C               29.8 C
Sai Kung                     24.5 C               29.2 C
Cheung Chau                  24.9 C               29.5 C
Chek Lap Kok                 26.3 C               32.0 C
Tsing Yi                     24.4 C               31.6 C
Shek Kong                    23.3 C               30.5 C
Tsuen Wan Ho Koon            22.9 C               28.3 C
Tsuen Wan Shing Mun Valley   23.1 C               30.0 C
Hong Kong Park               25.0 C               29.2 C
Shau Kei Wan                 24.7 C               29.1 C
Kowloon City                 24.7 C               30.4 C
Happy Valley                 25.0 C               30.4 C
Wong Tai Sin                 24.7 C               31.2 C
Stanley                      25.3 C               28.7 C
Kwun Tong                    25.3 C               30.5 C
Sham Shui Po                 25.4 C               31.1 C
Kai Tak Runway Park          26.0 C               29.1 C
Yuen Long Park               23.6 C               32.0 C

Duration of sunshine (King's Park):              8.5 H
The mean UV index recorded at King's Park yesterday was 3,
the UV intensity was Moderate.
The maximum UV index for yesterday was 8.
Sea surface temperature (Waglan Island):        27.5 C 

Yesterday's (26 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                             0.08
Kat O                               0.09
Yuen Ng Fan                         0.11
Tai Mei Tuk                         0.12
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 26 Oct
     2003copy right image | Important notices | Privacy policy Last revision date: <27 Oct 2016> 

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