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Bulletin issued at 13:02 HKT 03/Dec/2017

At 1 p.m. at the Hong Kong Observatory the air temperature was 23 degrees Celsius and the relative humidity 68 per cent.
During the past hour the mean UV Index recorded at King's Park was 5. The intensity of UV radiation was moderate.

Please be reminded that:

The Fire Danger Warning is Yellow and the fire risk is high.

The air temperatures at other places were:

King's Park 23 degrees;
Wong Chuk Hang 24 degrees;
Ta Kwu Ling 24 degrees;
Lau Fau Shan 23 degrees;
Tai Po 23 degrees;
Sha Tin 23 degrees;
Tuen Mun 24 degrees;
Tseung Kwan O 24 degrees;
Sai Kung 21 degrees;
Cheung Chau 22 degrees;
Chek Lap Kok 22 degrees;
Tsing Yi 24 degrees;
Shek Kong 25 degrees;
Tsuen Wan Ho Koon 22 degrees;
Tsuen Wan Shing Mun Valley 25 degrees;
Hong Kong Park 24 degrees;
Shau Kei Wan 22 degrees;
Kowloon City 24 degrees;
Happy Valley 22 degrees;
Wong Tai Sin 24 degrees;
Stanley 21 degrees;
Kwun Tong 23 degrees;
Sham Shui Po 24 degrees;
Kai Tak Runway Park 23 degrees;
Yuen Long Park 24 degrees;
Tai Mei Tuk 24 degrees.


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


Climatological Information for 3 Dec

Regional Weather in Hong Kong

Information on Tropical Cyclones

Hong Kong Climatology


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Local Weather Forecast

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

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UV Index Forecast |  Weather Information for South China Coastal Waters

Bulletin updated at 12:45 HKT 03/Dec/2017

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

The northeast monsoon is bringing generally fine weather to the south China coast.

Weather forecast for this afternoon and tonight

Mainly fine. Dry in the afternoon. Moderate northeasterly winds.

Outlook : Mainly fine and dry in the next couple of days. Cool in the morning midweek this week.


(The above forecast period is valid up to 23:59 HKT today, 03/12/2017; 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 03/Dec/2017

GALE WARNING AREAS: TAIWAN STRAIT AND PRATAS.

GENERAL SITUATION AT 022100 UTC:
THE NORTHEAST MONSOON IS AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 030100 UTC:

HONG KONG= NE 5, OCNL 6. FINE. SEA UP TO 3 M. SWELL NE 2 M. TEMP 24-19 C. =
KWANGTUNG= NE 6-7. FINE. SEA 3-4 M. SWELL NE 2-3 M. =
TAIWAN STRAIT= NE 6-7, OCNL 8. FINE. SEA UP TO 6 M. SWELL NE 3-4 M. =
BASHI= N TO NE 6-7. ISOL SHOWERS AND TS. SEA 3-4 M. SWELL NE 3-4 M. =
PRATAS= NE 6-7, OCNL 8. FINE. SEA UP TO 6 M. SWELL NE 3-4 M. =
BALINTANG= N TO NE 6-7. ISOL SHOWERS AND TS. SEA 3-4 M. SWELL NE 3-4 M. =
SCARBOROUGH= NE 6-7. ISOL SHOWERS AND TS. SEA 3-4 M. SWELL NE 3-4 M. =
PARACEL= NE 6-7. ISOL SHOWERS AND TS. SEA 3-4 M. SWELL NE 3-4 M. =
TONKIN= NE 6-7. FINE. SEA 3-4 M. SWELL NE 2 M. =
DANANG= NE 6-7. ISOL SHOWERS AND TS. SEA 3-4 M. SWELL NE 2-3 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
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    • 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 03/Dec/2017

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 12:30 p.m. on 03 December 2017

    Warnings:
    Strong winds in all areas.

    Weather Situation:
    The northeast monsoon is affecting the south China coastal waters.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    Northeast force 5, occasionally force 6.
    Moderate to rough seas.

    Nan'ao, Shanwei, South of Hong Kong and Shangchuan Dao:
    Northeast force 6 to 7.
    Rough seas.

    Outlook for the next 48 hours
    North to northeasterly winds of force 6 to 7.

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

    Waglan Island Wind east-northeast force 3
      Visibility 13 Kilometres

    Shantou Wind east-northeast force 2
      Visibility 26 Kilometres

    Dongsha Wind northeast force 5
      Visibility 10 Kilometres

    Huangmaozhou Wind east-northeast force 4

    Macau Wind north-northeast force 2
      Visibility 10 Kilometres

    Xisha Wind northeast force 3
      Visibility 14 Kilometres

  • Explanation of Seas or Sea Waves
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    • WEATHER FORECAST FOR LOCAL AVIATION
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    Weather Forecast for Local Aviation

    Bulletin issued at 09:30 HKT 03/DEC/2017
    (Next update at 17:30 HKT 03/DEC/2017)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     NIL
II.  SYNOPSIS OF THE WEATHER SITUATION :
     THE NORTHEAST MONSOON 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:  030/5-10
       OFFSHORE:  040/10-15                            18-24
   B.   2000 FT:  060/15                               15
   C.   5000 FT:  070/10                               16
   D.  10000 FT:  270/15                               4
   E.  18000 FT:  260/40                               MS5
   F.  24000 FT:  270/50                               MS16
   G.  30000 FT:  280/55                               MS28
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      3800-5000 FT.
   I. WEATHER       : 
      MAINLY FINE.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 3500 FT.
   K. VISIBILITY    : 10 KM.
   L. 0 DEG. C LEVEL: 15500 FT      10 DEG. C LEVEL(S) : 7800 FT
   M. TURBULENCE    : MOD OFFSHORE AND NEAR HILLS
   N. SEA STATE     : 1.0-1.5 M     SEA TEMPERATURE    : 22 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE NORTHEASTERLY 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 20:11 HKT on 01 Dec 17

    VHHK SIGMET 4 VALID 010820/011220 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N1642 E11400 - N1736 E11312 - N1812 E11512 - N1642 E11400 TOP FL450 MOV W 05KT NC= VHHK SIGMET 5 VALID 011220/011620 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N1806 E11506 - N1642 E11400 - N1712 E11330 - N1818 E11448 - N1806 E11506 TOP FL420 MOV W 05KT 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

    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 03/Dec/2017 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     22.9 C
Minimum Air Temperature                     17.5 C
Grass Minimum Temperature                   17.7 C
Relative Humidity                        62 - 85 Percent
Rainfall                                       0 mm 
Total rainfall since 1st January          2572.1 mm
Against an average of                     2372.0 mm

Other Stations                Min                  Max
King's Park                  17.0 C               24.0 C
Wong Chuk Hang               17.6 C               24.3 C
Ta Kwu Ling                  15.7 C               23.9 C
Lau Fau Shan                 16.0 C               23.5 C
Tai Po                       16.4 C               23.2 C
Sha Tin                      17.0 C               23.9 C
Tuen Mun                     17.2 C               24.6 C
Tseung Kwan O                16.8 C               24.4 C
Sai Kung                     16.8 C               22.2 C
Cheung Chau                  16.6 C               23.6 C
Chek Lap Kok                 17.5 C               23.3 C
Tsing Yi                     17.6 C               24.2 C
Shek Kong                    16.3 C               25.8 C
Tsuen Wan Ho Koon            15.2 C               23.7 C
Tsuen Wan Shing Mun Valley   16.6 C               25.4 C
Hong Kong Park               17.9 C               24.8 C
Shau Kei Wan                 17.3 C               23.7 C
Kowloon City                 16.6 C               25.0 C
Happy Valley                 18.1 C               25.2 C
Wong Tai Sin                 16.9 C               24.9 C
Stanley                      17.8 C               22.5 C
Kwun Tong                    16.9 C               24.2 C
Sham Shui Po                 17.3 C               24.9 C
Kai Tak Runway Park          17.7 C               23.5 C
Yuen Long Park               16.6 C               25.6 C
Tai Mei Tuk               16.2 C               23.7 C

Duration of sunshine (King's Park):              8.5 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 5.
Sea surface temperature (Waglan Island):        22.3 C 

Yesterday's (02 Dec 2017) average ambient gamma radiation
dose rate taken outdoors in Hong Kong ranged from 0.08 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                           0.08
Tap Mun                             0.09
Kat O                               0.10
Yuen Ng Fan                         0.12
Tai Mei Tuk                         0.12
Sha Tau Kok                         0.10
Kwun Tong                           0.12
Sai Wan Ho                          0.10
King's Park                         0.15
Tsim Bei Tsui                       0.13
Cape D'Aguilar                      0.14
Chek Lap Kok                        0.15

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 02 Dec
     2003copy right image | Important notices | Privacy policy Last revision date: <03 Dec 2017> 

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