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Bulletin issued at 00:02 HKT 17/Jun/2018

At midnight at the Hong Kong Observatory the air temperature was 28 degrees Celsius and the relative humidity 65 per cent.

The air temperatures at other places were:

King's Park 27 degrees;
Wong Chuk Hang 27 degrees;
Ta Kwu Ling 26 degrees;
Lau Fau Shan 25 degrees;
Tai Po 27 degrees;
Sha Tin 28 degrees;
Tuen Mun 27 degrees;
Tseung Kwan O 27 degrees;
Sai Kung 28 degrees;
Cheung Chau 27 degrees;
Chek Lap Kok 28 degrees;
Tsing Yi 28 degrees;
Shek Kong 27 degrees;
Tsuen Wan Ho Koon 25 degrees;
Tsuen Wan Shing Mun Valley 26 degrees;
Hong Kong Park 27 degrees;
Shau Kei Wan 27 degrees;
Kowloon City 27 degrees;
Happy Valley 28 degrees;
Wong Tai Sin 27 degrees;
Stanley 27 degrees;
Kwun Tong 27 degrees;
Sham Shui Po 27 degrees;
Kai Tak Runway Park 28 degrees;
Yuen Long Park 27 degrees;
Tai Mei Tuk 26 degrees.


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


Climatological Information for 17 Jun

Regional Weather in Hong Kong

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Bulletin updated at 00:00 HKT 17/Jun/2018

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

A fresh to strong easterly airstream affected the coast of Guangdong yesterday. Meanwhile, a broad area of low pressure brought unsettled weather to the northern and central parts of the South China Sea. Locally, it was mainly cloudy at first and became fine during the day. The easterly airstream will continue to affect the coast of Guangdong today.

At 11 p.m. last night, Tropical Storm Gaemi was centred about 920 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 Hong Kong (Sunday, 17 Jun 2018)

Mainly fine. Becoming cloudy with a few showers. 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 this week.


(The above forecast period is valid up to 23:59 HKT today, 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 21:00 HKT 16/Jun/2018

N0 WARNING.

GENERAL SITUATION AT 160900 UTC:
LOW 1000 HPA 19N 115E QSTNR INTST NC.

MARINE FORECAST FOR 24 HOURS FROM 161300 UTC:

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


  • 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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    Bulletin issued at 23:30 HKT 16/Jun/2018

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 11:30 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.

    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-northeast force 6

    Shantou Wind east force 3
      Visibility 30 Kilometres

    Huangmaozhou Wind east force 6

    Macau Wind east force 3
      Visibility 13 Kilometres

    Xisha Wind west force 3
      Visibility 7 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 21:55 HKT on 16 Jun 18

    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= VHHK SIGMET 5 VALID 161400/161800 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N2100 E11730 - N1942 E11624 - N1830 E11224 - N1918 E11136 - N2100 E11500 - N2130 E11730 - N2100 E11730 TOP FL420 STNR 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 17/Jun/2018 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     31.5 C
Minimum Air Temperature                     26.9 C
Grass Minimum Temperature                   25.2 C
Relative Humidity                        58 - 81 Percent
Rainfall                                       0 mm 
Total rainfall since 1st January           546.7 mm
Against an average of                      891.9 mm

Other Stations                Min                  Max
King's Park                  26.2 C               30.3 C
Wong Chuk Hang               26.7 C               30.3 C
Ta Kwu Ling                  25.1 C               31.9 C
Lau Fau Shan                 24.9 C               33.1 C
Tai Po                       26.8 C               31.8 C
Sha Tin                      26.8 C               31.4 C
Tuen Mun                     25.6 C               32.0 C
Tseung Kwan O                25.5 C               30.4 C
Sai Kung                     27.0 C               29.6 C
Cheung Chau                  24.6 C               29.7 C
Chek Lap Kok                 27.4 C               32.8 C
Tsing Yi                     27.3 C               31.7 C
Shek Kong                    26.4 C               32.3 C
Tsuen Wan Ho Koon            24.7 C               31.0 C
Tsuen Wan Shing Mun Valley   26.2 C               31.2 C
Hong Kong Park               26.5 C               31.6 C
Shau Kei Wan                 26.3 C               29.6 C
Kowloon City                 26.2 C               30.7 C
Happy Valley                 26.8 C               32.0 C
Wong Tai Sin                 26.6 C               30.4 C
Stanley                      26.8 C               29.9 C
Kwun Tong                    26.3 C               30.0 C
Sham Shui Po                 26.9 C               31.4 C
Kai Tak Runway Park          27.0 C               29.5 C
Yuen Long Park               25.8 C               32.7 C
Tai Mei Tuk               25.6 C               30.7 C

Duration of sunshine (King's Park):              7.3 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 10.
 

Yesterday's (16 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                           0.12
Sai Wan Ho                          0.09
King's Park                         0.14
Tsim Bei Tsui                       0.13
Cape D'Aguilar                      0.13
Chek Lap Kok                        0.13

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 16 Jun
     2003copy right image | Important notices | Privacy policy Last revision date: <17 Jun 2018> 

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