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Bulletin issued at 22:31 HKT 01/Jun/2018

At 10 p.m. at the Hong Kong Observatory the air temperature was 28 degrees Celsius and the relative humidity 83 per cent.

The air temperatures at other places were:

King's Park 27 degrees;
Wong Chuk Hang 28 degrees;
Ta Kwu Ling 28 degrees;
Lau Fau Shan 27 degrees;
Tai Po 27 degrees;
Sha Tin 27 degrees;
Tuen Mun 29 degrees;
Tseung Kwan O 27 degrees;
Sai Kung 27 degrees;
Cheung Chau 27 degrees;
Chek Lap Kok 29 degrees;
Tsing Yi 28 degrees;
Shek Kong 28 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 27 degrees;
Stanley 27 degrees;
Kwun Tong 27 degrees;
Sham Shui Po 28 degrees;
Kai Tak Runway Park 27 degrees;
Yuen Long Park 28 degrees;
Tai Mei Tuk 27 degrees.

Between 8:45 and 9:45 p.m., lightning was detected within Hong Kong and Kowloon.


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


Climatological Information for 1 Jun

Regional Weather in Hong Kong

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Bulletin updated at 21:45 HKT 01/Jun/2018

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

An easterly airstream is affecting the coast of Guangdong.

Weather forecast for tonight and tomorrow

Mainly cloudy with one or two showers. Isolated thunderstorms at first. Sunny intervals tomorrow. Temperatures will range between 28 and 32 degrees. Moderate easterly winds, occasionally fresh offshore.

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


(The above forecast period is valid up to 23:59 HKT tomorrow, 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 21:00 HKT 01/Jun/2018

GALE WARNING AREA: TAIWAN STRAIT.

GENERAL SITUATION AT 010900 UTC:
AN EASTERLY AIRSTREAM IS AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 011300 UTC:

HONG KONG= E 5-6. ISOL SHOWERS AND TS. SEA 2-3 M. TEMP 28-32 C. =
KWANGTUNG= E 5-6, OCNL 7 AT FIRST. ISOL SHOWERS AND TS. SEA 2-3 M, UP TO 4 M AT FIRST. SWELL NE UP TO 2 M. =
TAIWAN STRAIT= NE 6-7, 8 AT FIRST. ISOL SHOWERS AND TS. SEA 3-4 M, 6 M AT FIRST. SWELL NE 2-3 M. =
BASHI= E 5-6, 7 AT FIRST. ISOL SHOWERS AND TS. SEA 2-3 M, 4 M AT FIRST. SWELL NE UP TO 2 M. =
PRATAS= E 5-6, OCNL 7 AT FIRST. ISOL SHOWERS AND TS. SEA 2-3 M, UP TO 4 M AT FIRST. SWELL NE UP TO 2 M. =
BALINTANG= E 5-6, 7 AT FIRST. ISOL SHOWERS AND TS. SEA 2-3 M, 4 M AT FIRST. SWELL NE UP TO 2 M. =
SCARBOROUGH= E TO SE 5. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 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
  • 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 19:30 HKT 01/Jun/2018

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 7:30 p.m. on 01 June 2018

    Warnings:
    Strong winds in Hong Kong adjacent waters, Nan'ao, Shanwei and south of Hong Kong.

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

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    East force 5 to 6.
    Isolated showers and thunderstorms.
    Moderate to rough seas.

    Nan'ao and Shanwei:
    East force 5 to 6, occasionally force 7 at first.
    Isolated showers and thunderstorms.
    Moderate to rough seas.

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

    Shangchuan Dao:
    East force 4 to 5.
    Isolated showers and thunderstorms.
    Moderate seas.

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

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

    Waglan Island Wind east-northeast force 5
      Visibility 14 Kilometres

    Shantou Wind east-northeast force 3
      Visibility 30 Kilometres

    Huangmaozhou Wind east-southeast force 4

    Macau Wind east force 2
      Visibility 40 Kilometres

    Xisha Wind northeast force 2
      Visibility 27 Kilometres

  • 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 01/JUN/2018
    (Next update at 01:30 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 SOUTH
     CHINA COASTAL AREAS.
     
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1800 TO 0400 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  100/10-15
                  TEMPO VRB/15G25 IN TS
       OFFSHORE:  080/15-20, OCNL 25                   32-27
   B.   2000 FT:  160/15-20
                  BEC 090/15-20                        25
   C.   5000 FT:  120/10                               19
   D.  10000 FT:  050/10
                  BEC 150/10                           12
   E.  18000 FT:  070/10                               MS4
   F.  24000 FT:  010/10                               MS14
   G.  30000 FT:  040/10                               MS27
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL
   I. WEATHER       : 
      MAINLY CLOUDY. A FEW SHOWERS AND ISOLATED THUNDERSTORMS.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 2500 FT. 
      TEMPO FEW 800 CB 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: 16500 FT      10 DEG. C LEVEL(S) : 11800 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, OCCASIONALLY
     STRONG OFFSHORE.  SUNNY INTERVALS. 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 22:16 HKT on 01 Jun 18

    VHHK SIGMET 1 VALID 011415/011815 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N2212 E11406 - N2206 E11424 - N2142 E11412 - N2154 E11312 - N2218 E11318 - N2218 E11324 - N2212 E11406 TOP FL400 MOV E 10KT NC= VHHK SIGMET 2 VALID 011415/011815 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N2212 E11406 - N2206 E11424 - N2142 E11412 - N2154 E11312 - N2218 E11318 - N2218 E11324 - N2212 E11406 TOP FL400 MOV W 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 01/Jun/2018 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     34.8 C
Minimum Air Temperature                     28.9 C
Grass Minimum Temperature                   27.6 C
Relative Humidity                        53 - 84 Percent
Rainfall                                       0 mm 
Total rainfall since 1st January           175.0 mm
Against an average of                      640.8 mm

Other Stations                Min                  Max
King's Park                  28.2 C               34.5 C
Wong Chuk Hang               27.6 C               33.3 C
Ta Kwu Ling                  26.2 C               37.5 C
Lau Fau Shan                 28.0 C               35.9 C
Tai Po                       27.9 C               37.8 C
Sha Tin                      28.3 C               35.7 C
Tuen Mun                     28.3 C               35.9 C
Tseung Kwan O                27.2 C               36.4 C
Sai Kung                     27.8 C               35.0 C
Cheung Chau                  27.3 C               35.1 C
Chek Lap Kok                 29.6 C               36.2 C
Tsing Yi                     28.3 C               34.4 C
Shek Kong                    28.0 C               37.0 C
Tsuen Wan Ho Koon            26.5 C               33.9 C
Tsuen Wan Shing Mun Valley   28.0 C               34.3 C
Hong Kong Park               28.4 C               34.5 C
Shau Kei Wan                 28.3 C               35.6 C
Kowloon City                 28.3 C               35.9 C
Happy Valley                 28.3 C               35.3 C
Wong Tai Sin                 28.4 C               34.7 C
Stanley                      27.8 C               31.8 C
Kwun Tong                    28.6 C               35.7 C
Sham Shui Po                 28.2 C               33.9 C
Kai Tak Runway Park          28.4 C               35.3 C
Tai Mei Tuk               28.1 C               37.4 C

Duration of sunshine (King's Park):              11.9 H
The mean UV index recorded at King's Park yesterday was 6,
the UV intensity was High.
The maximum UV index for yesterday was 11.
Sea surface temperature (Waglan Island):        25.9 C 

Yesterday's (31 May 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                         0.11
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 31 May
     2003copy right image | Important notices | Privacy policy Last revision date: <01 Jun 2018> 

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