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Bulletin issued at 10:02 HKT 12/Jun/2018

At 10 a.m. at the Hong Kong Observatory the air temperature was 29 degrees Celsius and the relative humidity 85 per cent.
During the past hour the mean UV Index recorded at King's Park was 2. The intensity of UV radiation was low.

Please be reminded that:

The Thunderstorm Warning has been issued. It will remain effective until 11:30 a.m. today. A few thunderstorms are expected to occur over Hong Kong.

The air temperatures at other places were:

King's Park 29 degrees;
Wong Chuk Hang 28 degrees;
Ta Kwu Ling 29 degrees;
Lau Fau Shan 26 degrees;
Tai Po 29 degrees;
Sha Tin 29 degrees;
Tuen Mun 27 degrees;
Tseung Kwan O 29 degrees;
Sai Kung 29 degrees;
Cheung Chau 26 degrees;
Chek Lap Kok 28 degrees;
Tsing Yi 27 degrees;
Shek Kong 29 degrees;
Tsuen Wan Ho Koon 27 degrees;
Tsuen Wan Shing Mun Valley 28 degrees;
Hong Kong Park 27 degrees;
Shau Kei Wan 28 degrees;
Kowloon City 29 degrees;
Happy Valley 30 degrees;
Wong Tai Sin 29 degrees;
Stanley 29 degrees;
Kwun Tong 29 degrees;
Sham Shui Po 27 degrees;
Kai Tak Runway Park 29 degrees;
Yuen Long Park 27 degrees;
Tai Mei Tuk 29 degrees.

Between 8:45 and 9:45 a.m., lightning was detected within Lantau and New Territories West. The rainfall recorded in various regions were:

Islands District 0 to 13 mm;
Tuen Mun 0 to 6 mm;
Tsuen Wan 0 to 4 mm;
Yuen Long 0 to 3 mm;
Kwai Tsing 0 to 1 mm;
Central & Western District 0 to 1 mm;
Southern District 0 to 1 mm.


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


Climatological Information for 12 Jun

Regional Weather in Hong Kong

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Hong Kong Climatology


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Bulletin updated at 09:45 HKT 12/Jun/2018

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

A trough of low pressure is bringing showers and thunderstorms to the coast of Guangdong.

Weather forecast for today

Mainly cloudy with showers and a few thunderstorms. Light to moderate southwesterly winds.

Outlook : Weather will be unsettled with occasional showers and squally thunderstorms in the next couple of days.


(The above forecast period is valid up to 23:59 HKT today, 12/06/2018; 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 12/Jun/2018

N0 WARNING.

GENERAL SITUATION AT 112100 UTC:
A SOUTHWESTERLY AIRSTREAM IS AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 120100 UTC:

HONG KONG= S TO SW 4-5, OCNL 6. ISOL SHOWERS AND SQUALLY TS. SEA UP TO 3 M. TEMP 31-27 C. =
KWANGTUNG= S TO SW 5-6. ISOL SHOWERS AND SQUALLY TS. SEA 2-3 M. SWELL SW UP TO 2 M. =
TAIWAN STRAIT= E TO NE 5-6. ISOL SHOWERS AND TS. SEA 2-3 M. =
BASHI= W TO SW 6-7. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 3-4 M. SWELL SW 2 M. =
PRATAS= SW 5-6. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 2-3 M. SWELL SW 2 M. =
BALINTANG= W TO SW 6-7. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 3-4 M. SWELL SW 2 M. =
SCARBOROUGH= SW 5-6. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 2-3 M. SWELL SW 2-3 M. =
PARACEL= SW 6-7. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 3-4 M. SWELL SW 2-3 M. =
TONKIN= SW 6-7. ISOL SHOWERS AND SQUALLY TS. SEA 3-4 M. =
DANANG= SW 6-7. ISOL SHOWERS AND SQUALLY TS. SEA 3-4 M. SWELL SW 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 09:50 HKT 12/Jun/2018

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 9:50 a.m. on 12 June 2018

    Warnings:
    Strong winds in Hong Kong adjacent waters, Shanwei, south of Hong Kong and Shangchuan Dao.

    Weather Situation:
    A trough of low pressure is bringing unsettled weather to the south China coastal waters.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    South to southwest force 4 to 5, occasionally force 6.
    Isolated showers and squally thunderstorms. Showers will be heavy at times.
    Moderate to rough seas.

    Nan'ao:
    East force 4, becoming south to southwest force 4 to 5 later.
    Isolated showers and squally thunderstorms.
    Moderate seas.

    Shanwei:
    South to southwest force 4 to 5, occasionally force 6.
    Isolated showers and squally thunderstorms.
    Moderate to rough seas.

    South of Hong Kong and Shangchuan Dao:
    South to southwest force 5 to 6.
    Isolated showers and squally thunderstorms.
    Moderate to rough seas.

    Outlook for the next 48 hours
    Southwesterly winds of force 5 to 6, occasionally force 7. Isolated showers and squally thunderstorms.

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

    Waglan Island Wind variable force 1

    Shantou Wind east force 2
      Visibility 30 Kilometres

    Huangmaozhou Wind west force 4

    Macau Wind south force 3
      Visibility 4900 Metres in rain

    Xisha Wind southwest force 4
      Visibility 12 Kilometres

  • Explanation of Seas or Sea Waves
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  • Visibility Readings in Hong Kong Waters
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  • Tidal Information

    • WEATHER FORECAST FOR LOCAL AVIATION
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    Weather Forecast for Local Aviation

    Bulletin issued at 09:30 HKT 12/JUN/2018
    (Next update at 12:30 HKT 12/JUN/2018)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     ISOL CUNIM/TS AND ASSOCIATED HAZARDS.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     A SOUTHWESTERLY 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:  200/5-10
                  TEMPO VRB/20G30 IN TS                28-31
   B.   2000 FT:  220/10                               24
   C.   5000 FT:  190/10                               19
   D.  10000 FT:  240/15                               11
   E.  18000 FT:  300/10                               MS1
   F.  24000 FT:  310/20                               MS10
   G.  30000 FT:  220/15                               MS21
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL
   I. WEATHER       : 
      CLOUDY WITH SHOWERS AND ISOLATED THUNDERSTORMS.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1500 FT SCT 3000 FT TEMPO FEW CB 800 FT SCT
      1200 FT BKN 6000 FT
   K. VISIBILITY    : 8 KM. TEMPO 3000 M IN SHOWERS TEMPO 2000 M IN TS
   L. 0 DEG. C LEVEL: 17500 FT      10 DEG. C LEVEL(S) : 11000 FT
   M. TURBULENCE    : MOD TO SEV NEAR CUNIM/TS
   N. SEA STATE     : 0.5-1.0 M     SEA TEMPERATURE    : 27 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE SOUTH TO SOTHWESTERLY WINDS.  CLOUDY
     WITH OCCASIONAL SHOWERS AND SQUALLY
     THUNDERSTORMS.=

    ===================================================================
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 08:25 HKT on 12 Jun 18

    VHHK SIGMET 1 VALID 120025/120425 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N2030 E11706 - N1642 E11400 - N1924 E11136 - N2124 E11424 - N2030 E11706 TOP FL450 MOV E 10KT NC= VHHK SIGMET 7 VALID 112025/120025 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N1854 E11548 - N1642 E11400 - N1930 E11130 - N2124 E11130 - N2218 E11318 - N1948 E11336 - N1854 E11548 TOP FL420 MOV E 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 12/Jun/2018 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     34.3 C
Minimum Air Temperature                     28.0 C
Grass Minimum Temperature                   25.5 C
Relative Humidity                        44 - 76 Percent
Rainfall                                       0 mm 
Total rainfall since 1st January           396.3 mm
Against an average of                      818.6 mm

Other Stations                Min                  Max
King's Park                  27.8 C               34.1 C
Wong Chuk Hang               25.8 C               33.0 C
Ta Kwu Ling                  23.6 C               35.1 C
Lau Fau Shan                 25.8 C               33.7 C
Tai Po                       25.5 C               32.1 C
Sha Tin                      25.1 C               34.6 C
Tuen Mun                     26.4 C               34.3 C
Tseung Kwan O                24.3 C               34.2 C
Sai Kung                     26.5 C               33.4 C
Cheung Chau                  26.6 C               32.5 C
Chek Lap Kok                 27.6 C               34.4 C
Tsing Yi                     26.6 C               33.6 C
Shek Kong                    24.9 C               35.0 C
Tsuen Wan Ho Koon            24.7 C               32.8 C
Tsuen Wan Shing Mun Valley   24.9 C               33.8 C
Hong Kong Park               26.6 C               34.1 C
Shau Kei Wan                 27.4 C               34.0 C
Kowloon City                 27.6 C               35.0 C
Happy Valley                 26.4 C               35.3 C
Wong Tai Sin                 26.8 C               34.7 C
Stanley                      26.8 C               33.2 C
Kwun Tong                    27.6 C               34.1 C
Sham Shui Po                 26.8 C               33.6 C
Kai Tak Runway Park          27.6 C               32.8 C
Yuen Long Park               24.7 C               34.8 C
Tai Mei Tuk               26.2 C               34.2 C

Duration of sunshine (King's Park):              11.7 H
The mean UV index recorded at King's Park yesterday was 5,
the UV intensity was Moderate.
The maximum UV index for yesterday was 9.
 

Yesterday's (11 Jun 2018) 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                           0.09
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                           0.13
Sai Wan Ho                          0.08
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 in the
past, the hourly mean ambient gamma radiation dose rate may
vary between 0.06 and 0.3 microsievert per hour. (1
microsievert = 0.000001 sievert = 0.001 millisievert)

    2. Temporal variations are generally caused by changes in
meteorological conditions such as rainfall, wind and
barometric pressure.

    3. Spatial variations are generally caused by differences in
the radioactive content of local rock and soil.

    4. The data displayed is provisional. Only limited data
validation has been carried out.
    Climatological Information for 11 Jun
     2003copy right image | Important notices | Privacy policy Last revision date: <12 Jun 2018> 

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