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Bulletin issued at 16:02 HKT 15/Nov/2017

At 4 p.m. at the Hong Kong Observatory the air temperature was 23 degrees Celsius and the relative humidity 82 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 23 degrees;
Wong Chuk Hang 24 degrees;
Ta Kwu Ling 24 degrees;
Lau Fau Shan 24 degrees;
Tai Po 23 degrees;
Sha Tin 24 degrees;
Tuen Mun 25 degrees;
Tseung Kwan O 23 degrees;
Sai Kung 24 degrees;
Cheung Chau 23 degrees;
Chek Lap Kok 25 degrees;
Tsing Yi 24 degrees;
Shek Kong 24 degrees;
Tsuen Wan Ho Koon 23 degrees;
Tsuen Wan Shing Mun Valley 24 degrees;
Hong Kong Park 23 degrees;
Shau Kei Wan 23 degrees;
Kowloon City 23 degrees;
Happy Valley 24 degrees;
Wong Tai Sin 23 degrees;
Stanley 23 degrees;
Kwun Tong 23 degrees;
Sham Shui Po 24 degrees;
Kai Tak Runway Park 24 degrees;
Yuen Long Park 25 degrees;
Tai Mei Tuk 23 degrees.


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


Climatological Information for 15 Nov

Regional Weather in Hong Kong

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Hong Kong Climatology


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Bulletin updated at 16:15 HKT 15/Nov/2017

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

An easterly airstream is affecting the coast of Guangdong. Meanwhile, a band of clouds is covering southern China.

Weather forecast for tonight and tomorrow

Mainly cloudy. Sunny intervals tomorrow. Temperatures will range between 22 and 25 degrees. Moderate to fresh easterly winds, occasionally strong offshore at first tomorrow.

Outlook : Sunny periods on Friday. Windy with a few rain patches and temperatures falling appreciably later on Saturday. Remaining cool early next week.


(The above forecast period is valid up to 23:59 HKT tomorrow, 16/11/2017; 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 15/Nov/2017

N0 WARNING.

GENERAL SITUATION AT 142100 UTC:
AN EASTERLY AIRSTREAM IS AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 150100 UTC:

HONG KONG= E 5-6, OCNL 7. CLD. SEA UP TO 4 M. SWELL NE UP TO 2 M. TEMP 25-22 C. =
KWANGTUNG= E TO NE 6-7. RAIN PATCHES. SEA 3-4 M. SWELL NE UP TO 2 M. =
TAIWAN STRAIT= NE 6-7. RAIN PATCHES. SEA 3-4 M. SWELL NE 2 M. =
BASHI= E TO NE 6. RAIN PATCHES. SEA 3 M. SWELL NE 2 M. =
PRATAS= E TO NE 6. RAIN PATCHES. SEA 3 M. SWELL NE UP TO 2 M. =
BALINTANG= E TO NE 6. RAIN PATCHES. SEA 3 M. SWELL NE 2 M. =
SCARBOROUGH= NE 5-6. FINE. SEA 2-3 M. SWELL NE UP TO 2 M. =
PARACEL= E TO NE 6-7. RAIN PATCHES. SEA 3-4 M. SWELL NE UP TO 2 M. =
TONKIN= E TO NE 6-7. RAIN PATCHES. SEA 3-4 M. SWELL NE UP TO 2 M. =
DANANG= E TO NE 6-7. ISOL SHOWERS AND TS. SEA 3-4 M. SWELL NE 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
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    • SOUTH CHINA COASTAL WATERS
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    South China Coastal Waters

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    9-day Weather Forecast | UV Index Forecast | Weather Information for Fishermen

    Bulletin issued at 16:30 HKT 15/Nov/2017

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 4:30 p.m. on 15 November 2017

    Warnings:
    Strong winds in all areas.

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

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    East force 5 to 6, occasionally force 7.
    Moderate to rough seas.

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

    Outlook for the next 48 hours
    Northeasterly winds of force 5 to 6, force 7 later.

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

    Waglan Island Wind northeast force 5
      Visibility 13 Kilometres

    Shantou Wind east-southeast force 2
      Visibility 28 Kilometres

    Dongsha Wind northeast force 4
      Visibility 10 Kilometres

    Huangmaozhou Wind east-northeast force 5

    Macau Wind east force 2
      Visibility 14 Kilometres

    Xisha Wind east-northeast force 3
      Visibility 21 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 15/NOV/2017
    (Next update at 17:30 HKT 15/NOV/2017)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     STRONG WINDS AND SEV TURB.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     AN EASTERLY AIRSTREAM IS AFFECTING THE COAST OF
     GUANGDONG.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1000 TO 2000 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  090/10
       OFFSHORE:  090/20-25                            23-27
   B.   2000 FT:  090/15-20                            19
   C.   5000 FT:  140/10                               15
   D.  10000 FT:  260/15                               10
   E.  18000 FT:  260/20                               MS5
   F.  24000 FT:  290/30                               MS17
   G.  30000 FT:  280/40                               MS29
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      MAINLY CLOUDY. ONE OR TWO LIGHT RAIN PATCHES.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1500 FT SCT 3000 FT BKN 8000 FT.
   K. VISIBILITY    : 8 KM. TEMPO 4000 M IN RAIN.
   L. 0 DEG. C LEVEL: 16500 FT      10 DEG. C LEVEL(S) : 10000 FT
   M. TURBULENCE    : MOD TO SEV OFFSHORE AND  NEAR HILLS
   N. SEA STATE     : 3.0-4.0 M     SEA TEMPERATURE    : 25 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE TO FRESH EASTERLY WINDS. MAINLY CLOUDY.=

    ===================================================================
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 10:00 HKT on 15 Nov 17

    VHHK SIGMET Z99 VALID 150200/150210 VHHH- VHHK HONG KONG FIR THIS IS A TEST SIGMET, PLEASE DISREGARD=

    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 15/Nov/2017 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     24.0 C
Minimum Air Temperature                     22.0 C
Grass Minimum Temperature                   21.9 C
Relative Humidity                        83 - 95 Percent
Rainfall                                     0.2 mm 
Total rainfall since 1st January          2568.9 mm
Against an average of                     2352.7 mm

Other Stations                Min                  Max
King's Park                  21.7 C               24.6 C
Wong Chuk Hang               22.5 C               25.4 C
Ta Kwu Ling                  21.7 C               24.4 C
Lau Fau Shan                 21.4 C               27.4 C
Tai Po                       21.7 C               23.8 C
Sha Tin                      22.1 C               25.4 C
Tuen Mun                     21.8 C               26.1 C
Tseung Kwan O                21.4 C               23.8 C
Sai Kung                     21.9 C               24.0 C
Cheung Chau                  21.1 C               25.3 C
Chek Lap Kok                 22.5 C               27.9 C
Tsing Yi                     21.8 C               26.1 C
Shek Kong                    22.1 C               27.1 C
Tsuen Wan Ho Koon            20.9 C               26.0 C
Tsuen Wan Shing Mun Valley   21.6 C               26.1 C
Hong Kong Park               21.5 C               24.4 C
Shau Kei Wan                 21.6 C               23.5 C
Kowloon City                 21.3 C               25.2 C
Happy Valley                 21.9 C               24.9 C
Wong Tai Sin                 21.6 C               25.0 C
Stanley                      22.0 C               24.0 C
Kwun Tong                    21.4 C               23.8 C
Sham Shui Po                 21.9 C               26.6 C
Kai Tak Runway Park          22.3 C               24.4 C
Yuen Long Park               21.8 C               26.7 C
Tai Mei Tuk               21.5 C               23.6 C

Duration of sunshine (King's Park):              0.2 H
The mean UV index recorded at King's Park yesterday was 1,
the UV intensity was Low.
The maximum UV index for yesterday was 4.
Sea surface temperature (Waglan Island):        23.9 C 

Yesterday's (14 Nov 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                             0.09
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                          0.09
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 1987-2016, 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 14 Nov
     2003copy right image | Important notices | Privacy policy Last revision date: <15 Nov 2017> 

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