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Bulletin issued at 00:02 HKT 04/Jun/2018

At midnight at the Hong Kong Observatory the air temperature was 29 degrees Celsius and the relative humidity 82 per cent.

The air temperatures at other places were:

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

Here is the information on Tropical Depression at 11:00 p.m. yesterday:
Location: 15.3 degrees north, 110.8 degrees east.


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


Climatological Information for 4 Jun

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Bulletin updated at 00:00 HKT 04/Jun/2018

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

An easterly airstream affected the coast of Guangdong yesterday. Locally, it was mainly cloudy with one or two showers. The weather was hot with sunny periods during the day. Under the influence of an easterly airstream, there will be a few showers over the coast of Guangdong today.

At 11 p.m. last night, the tropical depression over the central part of the South China Sea was centred about 240 kilometres southwest of Xisha. It is forecast to move north at about 10 kilometres per hour towards the vicinity of Hainan Island.

Weather forecast for Hong Kong (Monday, 4 Jun 2018)

Mainly cloudy with a few showers. The minimum temperature will be about 27 degrees. Hot with sunny intervals during the day. The maximum temperature will be around 32 degrees. Moderate easterly winds, occasionally fresh offshore.

Outlook : There will be squally showers and thunderstorms in the following couple of days.


(The above forecast period is valid up to 23:59 HKT today, 04/06/2018; 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 03/Jun/2018

N0 WARNING.

GENERAL SITUATION AT 030900 UTC:
FOR DETAILS ON TROPICAL DEPRESSION OVER CENTRAL PART OF THE SOUTH CHINA SEA, PLEASE REFER TO THE 3-HRLY SHIPPING WARNINGS.

MARINE FORECAST FOR 24 HOURS FROM 031300 UTC:

HONG KONG= E 5-6. ISOL SHOWERS. SEA 2-3 M. SWELL E TO SE 2 M. TEMP 27-32 C. =
KWANGTUNG= E 5-6. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 2-3 M. SWELL E TO SE 2 M, 3 M LATER. =
TAIWAN STRAIT= NE 4-5, OCNL 6. ISOL SHOWERS. SEA UP TO 3 M. SWELL NE 2 M. =
BASHI= E TO SE 4-5. ISOL SHOWERS AND TS. SEA UP TO 2 M. SWELL E 2 M, SE 2 M LATER. =
PRATAS= E TO SE 5-6. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 2-3 M. SWELL E 2 M, SE 2 M LATER. =
BALINTANG= E TO SE 4-5. ISOL SHOWERS AND TS. SEA UP TO 2 M. SWELL E 2 M, SE 2 M LATER. =
SCARBOROUGH= S TO SW 5-6. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 2-3 M. SWELL SE UP TO 3 M, SW UP TO 3 M LATER. =
PARACEL= CYCLONIC 6-7. DOWN TO 500 M IN FRQ HEAVY SQUALLY SHOWERS AND TS. SEA 3-4 M. SWELL SE 3 M, SW 3 M LATER. =
TONKIN= N TO NE 5-6. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 2-3 M. SWELL SE 2 M. =
DANANG= N TO NW 6-7. DOWN TO 500 M IN FRQ HEAVY SQUALLY SHOWERS AND TS. SEA 3-4 M. SWELL SE UP TO 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 23:30 HKT 03/Jun/2018

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 11:30 p.m. on 03 June 2018

    Warnings:
    Strong winds in all areas.

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

    At 11 p.m., the tropical depression over the central part of the South China Sea with maximum sustained winds of about 45 kilometres per hour near its centre was located at 15.3 degrees north, 110.8 degrees east. It is forecast to move north at about 10 kilometres per hour towards the vicinity of Hainan Island.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    East force 5 to 6.
    A few showers.
    Moderate to rough seas.

    Nan'ao and Shanwei:
    East force 5 to 6.
    Isolated showers and thunderstorms.
    Moderate to rough seas.

    South of Hong Kong:
    East force 5 to 6.
    Scattered squally showers and thunderstorms.
    Moderate to rough seas.

    Shangchuan Dao:
    East force 5 to 6, becoming force 7 later.
    Occasional squally showers and thunderstorms.
    Moderate to rough seas.

    Outlook for the next 48 hours
    East to southeasterly winds of force 6 to 7. Occasional squally showers and thunderstorms.

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

    Waglan Island Wind east force 4
      Visibility 21 Kilometres

    Shantou Wind east force 2
      Visibility 30 Kilometres

    Huangmaozhou Wind east-southeast force 5

    Macau Wind east force 2
      Visibility 13 Kilometres

    Xisha Wind east-northeast force 1
      Visibility 12 Kilometres in showers

  • Explanation of Seas or Sea Waves
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  • Visibility Readings in Hong Kong Waters
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    • WEATHER FORECAST FOR LOCAL AVIATION
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    Weather Forecast for Local Aviation

    Bulletin issued at 18:30 HKT 03/JUN/2018
    (Next update at 01:30 HKT 04/JUN/2018)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     STRONG WINDS AND SEV TURB.
     ISOL CUNIM/TS AND ASSOCIATED HAZARDS.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     AN EASTERLY AIRSTREAM IS AFFECTING THE COAST OF
     GUANGDONG.
     AT 4 P.M., THE TROPICAL DEPRESSION OVER THE
     CENTRAL PART OF THE SOUTH CHINA SEA WAS LOCATED
     AT 14.6 DEGREES NORTH, 111.1 DEGREES EAST. IT IS
     FORECAST TO MOVE NORTH AT ABOUT 6 KNOTS TOWARDS
     THE VICINITY OF HAINAN ISLAND.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1830 TO 0400 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  090/10-15
                  TEMPO VRB/15G25 IN TS
       OFFSHORE:  080/15-20, OCNL 25                   31-27
   B.   2000 FT:  120/20-25                            22
   C.   5000 FT:  110/15                               19
   D.  10000 FT:  140/10                               12
   E.  18000 FT:  150/10                               MS3
   F.  24000 FT:  180/10                               MS13
   G.  30000 FT:  270/10                               MS26
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      2900-3400 FT
   I. WEATHER       : 
      MAINLY CLOUDY WITH ISOLATED SHOWERS AND
      THUNDERSTORMS.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 2500 FT SCT 6000 FT. TEMPO FEW CB 1500 SCT
      2500 BKN 4000.
   K. VISIBILITY    : 10 KM. TEMPO 4000 M IN SHOWERS. TEMPO 2500 M IN TS.
   L. 0 DEG. C LEVEL: 16500 FT      10 DEG. C LEVEL(S) : 11000 FT
   M. TURBULENCE    : MOD TO SEV
   N. SEA STATE     : 2.0-3.0 M     SEA TEMPERATURE    : 27 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE TO FRESH EASTERLY WINDS, OCNL STRONG
     OFFSHORE. MAINLY CLOUDY WITH ISOLATED 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 22:45 HKT on 03 Jun 18

    VHHK SIGMET 4 VALID 031100/031500 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N1942 E11624 - N1642 E11400 - N1806 E11242 - N1918 E11306 - N1942 E11624 TOP FL420 STNR NC= VHHK SIGMET 5 VALID 031500/031900 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N1642 E11400 - N1830 E11224 - N1854 E11300 - N1906 E11554 - N1642 E11400 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

    Tropical Cyclone Warning |  Track and Positions of Tropical Cyclones
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    South China Coastal Waters |  Marine Forecast
    Severe Weather Information Centre

    Bulletin issued at 00:30 HKT 04/Jun/2018


    Tropical Cyclone Warning

    At 031500 UTC, Tropical Depression over the central part of South China Sea with central pressure 1000 hectopascals was centred within 90 nautical miles of one five point four degrees north (15.4 N) one one zero point seven degrees east (110.7 E) and is forecast to move north at about 5 knots for the next 24 hours.

    Maximum winds near the centre are estimated to be 25 knots.

    Radius of over 2 metre waves 120 nautical miles.

    Forecast position and intensity at 041500 UTC
    One seven point two degrees north (17.2 N)
    One one zero point seven degrees east (110.7 E)
    Maximum winds 30 knots.

    Forecast position and intensity at 051500 UTC
    One eight point seven degrees north (18.7 N)
    One one zero point five degrees east (110.5 E)
    Maximum winds 40 knots.

    Forecast position and intensity at 061500 UTC
    One nine point five degrees north (19.5 N)
    One one zero point four degrees east (110.4 E)
    Maximum winds 35 knots.

    Forecast position and intensity at 071500 UTC
    Two zero point two degrees north (20.2 N)
    One one zero point one degrees east (110.1 E)
    Maximum winds 35 knots.

    Forecast position and intensity at 081500 UTC
    Two one point zero degrees north (21.0 N)
    One one zero point one degrees east (110.1 E)
    Maximum winds 35 knots.



    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 04/Jun/2018 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     32.6 C
Minimum Air Temperature                     27.3 C
Grass Minimum Temperature                   26.7 C
Relative Humidity                        62 - 82 Percent
Rainfall                                      Trace 
Total rainfall since 1st January           175.0 mm
Against an average of                      668.3 mm

Other Stations                Min                  Max
King's Park                  26.6 C               32.1 C
Wong Chuk Hang               27.1 C               31.0 C
Ta Kwu Ling                  26.6 C               33.8 C
Lau Fau Shan                 25.3 C               35.4 C
Tai Po                       26.6 C               31.0 C
Sha Tin                      26.7 C               32.3 C
Tuen Mun                     26.2 C               32.3 C
Tseung Kwan O                26.4 C               31.2 C
Sai Kung                     26.5 C               30.3 C
Cheung Chau                  26.4 C               32.3 C
Chek Lap Kok                 27.9 C               33.9 C
Tsing Yi                     27.3 C               32.9 C
Shek Kong                    26.8 C               33.9 C
Tsuen Wan Ho Koon            25.3 C               31.4 C
Tsuen Wan Shing Mun Valley   26.5 C               31.8 C
Hong Kong Park               26.4 C               31.1 C
Shau Kei Wan                 26.3 C               31.0 C
Kowloon City                 26.5 C               33.1 C
Happy Valley                 27.0 C               31.9 C
Wong Tai Sin                 26.1 C               31.1 C
Stanley                      26.7 C               30.3 C
Kwun Tong                    26.0 C               29.8 C
Sham Shui Po                 27.2 C               32.5 C
Kai Tak Runway Park          26.7 C               29.8 C
Yuen Long Park               26.3 C               32.5 C
Tai Mei Tuk               26.3 C               34.0 C

Duration of sunshine (King's Park):              8.3 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 11.
Sea surface temperature (Waglan Island):        28.1 C 

Yesterday's (03 Jun 2018) 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                           0.09
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                          0.08
King's Park                         0.15
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 03 Jun
     2003copy right image | Important notices | Privacy policy Last revision date: <04 Jun 2018> 

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