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Bulletin updated at 09:00 HKT 02/Jun/2018

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

An easterly airstream is affecting the coast of Guangdong. Besides, an area of low pressure is bringing unsettled weather to the southern part of the South China Sea.

Weather forecast for today

Sunny periods and isolated showers. Hot during the day with a maximum temperature of about 32 degrees. Moderate easterly winds, fresh offshore at first.

Outlook : Temperatures dropping slightly in the next couple of days. Squally showers midweek next week.


(The above forecast period is valid up to 23:59 HKT today, 02/06/2018; 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 02/Jun/2018

N0 WARNING.

GENERAL SITUATION AT 012100 UTC:
AN EASTERLY AIRSTREAM IS AFFECTING THE FORECAST AREAS. LOW 1002HPA 11N 113E NW 6KT INTSF.

MARINE FORECAST FOR 24 HOURS FROM 020100 UTC:

HONG KONG= E 5-6, OCNL 7. ISOL SHOWERS. SEA UP TO 4 M. SWELL E UP TO 2 M. TEMP 32-28 C. =
KWANGTUNG= E 5-6, OCNL 7. ISOL SHOWERS AND TS. SEA UP TO 4 M. SWELL E 2 M. =
TAIWAN STRAIT= NE 6, OCNL 7. ISOL SHOWERS. SEA UP TO 4 M. SWELL NE 2-3 M. =
BASHI= E 5-6, OCNL 7. ISOL SHOWERS AND TS. SEA UP TO 4 M. SWELL NE 2-3 M. =
PRATAS= E 5-6, OCNL 7. ISOL SHOWERS AND TS. SEA UP TO 4 M. SWELL NE 2 M. =
BALINTANG= E 5-6. ISOL SHOWERS AND TS. SEA 2-3 M. SWELL NE 2 M. =
SCARBOROUGH= E TO SE 5. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 2 M. =
PARACEL= E 4-5, OCNL 6. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 3 M. =
TONKIN= E 4-5. ISOL SHOWERS AND TS. SEA UP TO 2 M. =
DANANG= E 4-5. ISOL SHOWERS AND TS. SEA 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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    • WEATHER FORECAST FOR LOCAL AVIATION
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    Weather Forecast for Local Aviation

    Bulletin issued at 09:30 HKT 02/JUN/2018
    (Next update at 12:30 HKT 02/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. BESIDES, AN AREA OF LOW PRESSURE IS
     BRINGING UNSETTLED WEATHER TO THE SOUTHERN PART
     OF THE SOUTH CHINA SEA.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1000 TO 2000 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  090/10-15
                  TEMPO VRB/15G25 IN TS
       OFFSHORE:  080/15-20, OCNL 25                   29-33
   B.   2000 FT:  100/15-20                            23
   C.   5000 FT:  110/10                               17
   D.  10000 FT:  110/5                                12
   E.  18000 FT:  210/5                                MS2
   F.  24000 FT:  350/5                                MS12
   G.  30000 FT:  150/5                                MS24
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL
   I. WEATHER       : 
      SUNNY PERIODS. ISOLATED SHOWERS AND
      THUNDERSTORMS.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1500 FT SCT 3000 FT. TEMPO FEW CB 800 FT
      SCT 1200 FT BKN 5000 FT.
   K. VISIBILITY    : 10 KM. TEMPO 4000 M IN SHOWERS. TEMPO 2500 M IN TS
   L. 0 DEG. C LEVEL: 17000 FT      10 DEG. C LEVEL(S) : 11400 FT
   M. TURBULENCE    : MOD TO SEV
   N. SEA STATE     : 2.0-3.5 M     SEA TEMPERATURE    : 25 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE TO FRESH EASTERLY WINDS, OCCASIONALLY
     STRONG OFFSHORE.  MAINLY CLOUDY. A FEW SHOWERS
     AND ISOLATED 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 07:27 HKT on 02 Jun 18

    VHHK SIGMET 5 VALID 012330/020330 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N1830 E11530 - N1812 E11436 - N1848 E11324 - N1918 E11324 - N1936 E11618 - N1830 E11530 TOP FL400 STNR NC=

    Please click here for more about the SIGMET

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    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 02/Jun/2018 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     35.1 C
Minimum Air Temperature                     27.8 C
Grass Minimum Temperature                   27.3 C
Relative Humidity                        56 - 83 Percent
Rainfall                                       0 mm 
Total rainfall since 1st January           175.0 mm
Against an average of                      650.8 mm

Other Stations                Min                  Max
King's Park                  27.1 C               35.1 C
Wong Chuk Hang               27.1 C               33.1 C
Ta Kwu Ling                  25.9 C               36.2 C
Lau Fau Shan                 26.7 C               33.9 C
Tai Po                       26.7 C               32.9 C
Sha Tin                      27.1 C               34.5 C
Tuen Mun                     27.7 C               35.2 C
Tseung Kwan O                26.4 C               34.8 C
Sai Kung                     27.1 C               33.8 C
Cheung Chau                  27.0 C               34.5 C
Chek Lap Kok                 28.5 C               35.9 C
Tsing Yi                     27.4 C               34.4 C
Shek Kong                    27.1 C               35.7 C
Tsuen Wan Ho Koon            25.8 C               33.0 C
Tsuen Wan Shing Mun Valley   26.5 C               34.1 C
Hong Kong Park               27.2 C               33.9 C
Shau Kei Wan                 26.4 C               34.1 C
Kowloon City                 26.7 C               35.4 C
Happy Valley                 27.6 C               34.5 C
Wong Tai Sin                 26.8 C               33.6 C
Stanley                      27.0 C               33.9 C
Kwun Tong                    26.3 C               34.6 C
Sham Shui Po                 27.7 C               33.2 C
Kai Tak Runway Park          27.0 C               31.2 C
Yuen Long Park               26.9 C               35.0 C
Tai Mei Tuk               26.9 C               36.5 C

Duration of sunshine (King's Park):              5.2 H
The mean UV index recorded at King's Park yesterday was 4,
the UV intensity was Moderate.
The maximum UV index for yesterday was 10.
Sea surface temperature (Waglan Island):        26.6 C 

Yesterday's (01 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 01 Jun
     2003copy right image | Important notices | Privacy policy Last revision date: <02 Jun 2018> 

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