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Bulletin issued at 19:02 HKT 16/Jun/2018

At 7 p.m. at the Hong Kong Observatory the air temperature was 28 degrees Celsius and the relative humidity 73 per cent.

A fresh to strong easterly airstream will affect the coast of Guangdong tonight and tomorrow. Meanwhile, the broad area of low pressure over the central and northern parts of the South China Sea may further develop. Locally, there will be occasional strong winds offshore. Weather will become unsettled with a few showers tomorrow. The members of the public should be on the alert and be aware of the changes in the local weather when engaging in outdoor activities on Father's Day and Tuen Ng Festival.

The air temperatures at other places were:

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


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


Climatological Information for 16 Jun

Regional Weather in Hong Kong

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Hong Kong Climatology


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

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Bulletin updated at 18:45 HKT 16/Jun/2018

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

A fresh to strong easterly airstream is affecting the coast of Guangdong. Meanwhile, a broad area of low pressure is bringing unsettled weather to the northern and central parts of the South China Sea.

Tropical Depression Gaemi has intensified into a tropical storm. At 7 p.m., Gaemi was centred about 980 kilometres south-southwest of Osaka. It is forecast to move northeast at about 30 kilometres per hour across the western North Pacific and evolve into an extratropical cyclone gradually.

Weather forecast for tonight and tomorrow

Mainly fine. Becoming cloudy with a few showers tomorrow. There will be isolated thunderstorms later. Temperatures will range between 26 and 30 degrees. Moderate to fresh east to northeasterly winds, occasionally strong offshore.

Outlook : The weather will be unsettled with occasional showers on Tuen Ng Festival. Hot with sunny periods in the middle and latter parts of next week.


(The above forecast period is valid up to 23:59 HKT tomorrow, 17/06/2018; 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 16/Jun/2018

GALE WARNING AREAS: TAIWAN STRAIT AND PRATAS.

GENERAL SITUATION AT 152100 UTC:
LOW 1002 HPA 18N 112E QSTNR INTST NC.

MARINE FORECAST FOR 24 HOURS FROM 160100 UTC:

HONG KONG= E TO NE 5-6, OCNL 7. ISOL SHOWERS. SEA UP TO 4 M. SWELL SW 2 M. TEMP 30-26 C. =
KWANGTUNG= E TO NE 6-7. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 3-4 M. SWELL SW 2 M. =
TAIWAN STRAIT= NE 6-7, OCNL 8. ISOL SHOWERS. SEA UP TO 6 M. SWELL NE 2-3 M. =
BASHI= S TO SW 6-7. ISOL SHOWERS AND TS. SEA 3-4 M. SWELL SW 2-3 M. =
PRATAS= S TO SW 6-7, OCNL 8. ISOL SHOWERS AND TS. SEA UP TO 6 M. SWELL SW 2-3 M. =
BALINTANG= S TO SW 6-7. ISOL SHOWERS AND TS. SEA 3-4 M. SWELL SW 2-3 M. =
SCARBOROUGH= S TO SW 6-7. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 3-4 M. SWELL SW 2-3 M. =
PARACEL= W TO NW 6-7. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 3-4 M. SWELL SW 2-3 M. =
TONKIN= W TO NW 5-6. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 2-3 M. SWELL SW UP TO 2 M. =
DANANG= W TO SW 5-6, OCNL 7. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA UP TO 4 M. SWELL SW 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.


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    • SOUTH CHINA COASTAL WATERS
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    South China Coastal Waters

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    Bulletin issued at 19:30 HKT 16/Jun/2018

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 7:30 p.m. on 16 June 2018

    Warnings:
    Strong winds in all areas.

    Weather Situation:
    An easterly airstream is affecting the south China coastal waters. Meanwhile, a broad area of low pressure is bringing unsettled weather to the region.

    Tropical Depression Gaemi has intensified into a Tropical Storm. At 7 p.m., Gaemi with maximum sustained winds of about 65 kilometres per hour near its centre was located near 27.3 degrees north, 129.9 degrees east. It is forecast to move northeast at about 30 kilometres per hour across the western North Pacific and evolve into an extratropical cyclone gradually.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    East to northeast force 6 to 7, becoming west to southwest force 5 to 6 later.
    Isolated showers and thunderstorms.
    Rough seas.

    Nan'ao and Shanwei:
    East to northeast force 6 to 7, becoming south to southwest force 6 to 7 later.
    Scattered squally showers and thunderstorms.
    Rough seas.

    South of Hong Kong and Shangchuan Dao:
    Northeast force 6 to 7, becoming southwest force 6 to 7 later.
    Scattered squally showers and thunderstorms.
    Rough seas.

    Outlook for the next 48 hours
    Southwesterly winds of force 6 to 7. Scattered squally showers and thunderstorms.

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

    Waglan Island Wind east force 6

    Shantou Wind east force 2
      Visibility 30 Kilometres

    Huangmaozhou Wind east force 7

    Macau Wind east force 2
      Visibility 18 Kilometres

    Xisha Wind north-northwest force 2
      Visibility 8 Kilometres in showers

  • 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 17:30 HKT 16/JUN/2018
    (Next update at 01:30 HKT 17/JUN/2018)
    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.  MEANWHILE, A BROAD TROUGH OF LOW
     PRESSURE IS BRINGING UNSETTLED WEATHER TO THE
     NORTHERN AND CENTRAL PARTS OF THE SOUTH CHINA
     SEA.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1800 TO 0400 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  090/10-15
       OFFSHORE:  090/20-25                            31-26
   B.   2000 FT:  080/20                               23
   C.   5000 FT:  080/30                               20
   D.  10000 FT:  050/10                               12
   E.  18000 FT:  140/10                               MS1
   F.  24000 FT:  040/10                               MS10
   G.  30000 FT:  040/20                               MS25
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      3200 - 3500 FT.
   I. WEATHER       : 
      MAINLY CLOUDY WITH A FEW SHOWERS.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 2000 FT  SCT 4000 FT.
   K. VISIBILITY    : 10 KM.  TEMPO 4000 M IN SHOWERS.
   L. 0 DEG. C LEVEL: 17500 FT      10 DEG. C LEVEL(S) : 11350 FT
   M. TURBULENCE    : MOD TO SEV AT LOW LEVELS
   N. SEA STATE     : 2.0-3.0 M     SEA TEMPERATURE    : 26 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE TO FRESH NORTHEASTERLY 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 18:00 HKT on 16 Jun 18

    VHHK SIGMET 2 VALID 160615/161015 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N1900 E11406 - N1830 E11530 - N1642 E11400 - N1900 E11200 - N1906 E11348 - N1900 E11406 TOP FL420 MOV N 10KT NC= VHHK SIGMET 3 VALID 161000/161400 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N2030 E11706 - N1900 E11554 - N1836 E11218 - N1930 E11130 - N2030 E11130 - N2048 E11606 - N2030 E11706 TOP FL420 MOV N 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

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    Bulletin issued at 03:30 HKT 16/Jun/2018


    Tropical Cyclone Warning

    At 151800 UTC, Tropical Depression Gaemi (1806) with central pressure 992 hectopascals was centred within 90 nautical miles of two five point nine degrees north (25.9 N) one two five point six degrees east (125.6 E) and is forecast to move northeast at about 15 knots for the next 12 hours.

    Maximum winds near the centre are estimated to be 30 knots.

    Radius of over 2 metre waves 120 nautical miles.

    No further warnings on this Tropical Depression will be issued by the Hong Kong Observatory unless it re-enters the Hong Kong area of responsibility.

    Forecast position and intensity at 161800 UTC
    Become extratropical low.



    The Hong Kong Observatory's tropical cyclone warnings for shipping are issued about one and a half hours after the time of observation. They incorporate additional information derived from surface and upper-air data and may therefore be slightly different from the real-time satellite or radar-based positions given in the hourly bulletins for public.

    While the forecast positions and track indicate the most likely future path of the tropical cyclone, they may deviate from the actual path taken by the storm.

    Tropical Cyclone Track
    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 16/Jun/2018 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     29.1 C
Minimum Air Temperature                     25.7 C
Grass Minimum Temperature                   24.4 C
Relative Humidity                        70 - 86 Percent
Rainfall                                     0.2 mm 
Total rainfall since 1st January           546.7 mm
Against an average of                      869.7 mm

Other Stations                Min                  Max
King's Park                  25.3 C               29.3 C
Wong Chuk Hang               24.7 C               28.3 C
Ta Kwu Ling                  24.1 C               29.6 C
Lau Fau Shan                 24.2 C               28.9 C
Tai Po                       24.1 C               28.7 C
Sha Tin                      25.2 C               29.5 C
Tuen Mun                     24.9 C               29.5 C
Tseung Kwan O                23.5 C               29.5 C
Sai Kung                     25.2 C               29.2 C
Cheung Chau                  24.2 C               29.2 C
Chek Lap Kok                 26.0 C               30.1 C
Tsing Yi                     25.9 C               29.8 C
Shek Kong                    24.0 C               29.1 C
Tsuen Wan Ho Koon            23.6 C               27.0 C
Tsuen Wan Shing Mun Valley   24.6 C               29.0 C
Hong Kong Park               25.3 C               28.8 C
Shau Kei Wan                 24.8 C               29.2 C
Kowloon City                 24.9 C               29.5 C
Happy Valley                 25.2 C               29.9 C
Wong Tai Sin                 25.1 C               29.6 C
Stanley                      25.1 C               30.4 C
Kwun Tong                    24.9 C               29.0 C
Sham Shui Po                 25.2 C               29.3 C
Kai Tak Runway Park          25.4 C               29.0 C
Yuen Long Park               24.9 C               30.1 C
Tai Mei Tuk               24.5 C               31.3 C

Duration of sunshine (King's Park):              3.0 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 6.
 

Yesterday's (15 Jun 2018) average ambient gamma radiation
dose rate taken outdoors in Hong Kong ranged from 0.09 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                          0.09
King's Park                         0.14
Tsim Bei Tsui                       0.13
Cape D'Aguilar                      0.13
Chek Lap Kok                        0.13

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 15 Jun
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