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Bulletin issued at 07:21 HKT 25/Jun/2018

At 7 a.m. at the Hong Kong Observatory the air temperature was 27 degrees Celsius and the relative humidity 92 per cent.

Please be reminded that:

The Thunderstorm Warning was issued at 7:20 a.m. It will remain effective until 9:00 a.m. today. A few isolated thunderstorms are expected to occur over Hong Kong.

The air temperatures at other places were:

King's Park 27 degrees;
Wong Chuk Hang 27 degrees;
Ta Kwu Ling 27 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 27 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 29 degrees;
Kowloon City 27 degrees;
Happy Valley 28 degrees;
Wong Tai Sin 27 degrees;
Stanley 28 degrees;
Kwun Tong 27 degrees;
Sham Shui Po 27 degrees;
Kai Tak Runway Park 28 degrees;
Yuen Long Park 25 degrees;
Tai Mei Tuk 26 degrees.

Between 5:45 and 6:45 a.m., the rainfall recorded in various regions were:

Tuen Mun 0 to 1 mm;
Sha Tin 0 to 1 mm;
Tai Po 0 to 1 mm;
Wong Tai Sin 0 to 1 mm.


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


Climatological Information for 25 Jun

Regional Weather in Hong Kong

Information on Tropical Cyclones

Hong Kong Climatology


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

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UV Index Forecast |  Weather Information for South China Coastal Waters

Bulletin updated at 06:45 HKT 25/Jun/2018

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

A southerly airstream is bringing showers to the coast of Guangdong and the northern part of the South China Sea. Locally, a few millimetres of rainfall were recorded at many places over the territory this morning, and rainfall even exceeded 10 millimetres over the eastern part of the New Territories.

Weather forecast for today

Mainly cloudy with occasional showers and a few thunderstorms. Sunny intervals during the day with a maximum temperature of around 30 degrees. Moderate south to southeasterly winds.

Outlook : Showers will ease off in the next couple of days. Fine and very hot in the middle and latter parts of this week.


(The above forecast period is valid up to 23:59 HKT today, 25/06/2018; 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 24/Jun/2018

N0 WARNING.

GENERAL SITUATION AT 240900 UTC:
A SOUTHERLY AIRSTREAM IS AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 241300 UTC:

HONG KONG= S TO SE 5, OCNL 6. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 3 M. SWELL S UP TO 2 M. TEMP 26-30 C. =
KWANGTUNG= S 5-6. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 2-3 M. SWELL S 2 M. =
TAIWAN STRAIT= S 4-5. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 2 M. SWELL S UP TO 2 M. =
BASHI= S TO SE 4-5. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 2 M. SWELL S UP TO 2 M. =
PRATAS= S 5, OCNL 6. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 3 M. SWELL S 2 M. =
BALINTANG= S TO SE 4-5. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 2 M. SWELL S UP TO 2 M. =
SCARBOROUGH= S TO SE 5-6. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 2-3 M. SWELL S 2 M. =
PARACEL= S 5-6, OCNL 7. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA UP TO 4 M. SWELL S 2 M. =
TONKIN= S 5-6, OCNL 7. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA UP TO 4 M. SWELL S UP TO 2 M. =
DANANG= S 5-6, OCNL 7. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA UP TO 4 M. SWELL S 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 05:30 HKT 25/Jun/2018

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 5:30 a.m. on 25 June 2018

    Warnings:
    Strong winds in all areas.

    Weather Situation:
    A southerly airstream is bringing unsettled weather to the south China coastal waters.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    South to southeast force 5, occasionally force 6.
    Scattered squally showers and thunderstorms.
    Moderate to rough seas.

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

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

    Outlook for the next 48 hours
    South to southeasterly winds of force 4 to 5, occasionally force 6. Isolated squally showers and thunderstorms.

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

    Waglan Island Wind east-southeast force 4
      Visibility 37 Kilometres

    Shantou Wind south-southwest force 1
      Visibility 30 Kilometres

    Huangmaozhou Wind southeast force 4

    Macau Wind east-southeast force 2
      Visibility 25 Kilometres

    Xisha Wind south-southwest force 3
      Visibility 14 Kilometres

  • Explanation of Seas or Sea Waves
  • Explanation of Swells
  • Descriptive Terms of Wind Speeds
  • Visibility Readings in Hong Kong Waters
  • Map showing forecast areas
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    • WEATHER FORECAST FOR LOCAL AVIATION
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    Weather Forecast for Local Aviation

    Bulletin issued at 01:30 HKT 25/JUN/2018
    (Next update at 9:00-9:30 HKT 25/JUN/2018)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     ISOL CUNIM/TS AND ASSOCIATED HAZARDS.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     A SOUTHERLY AIRSTREAM IS BRINGING UNSETTLED
     WEATHER TO THE SOUTH CHINA COASTAL WATERS.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 0200 TO 1200 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  140/10
                  TEMPO VRB/15G25 IN TS
       OFFSHORE:  150/15-20                            26-29
   B.   2000 FT:  160/15-20, OCNL 25                   22
   C.   5000 FT:  160/15-20                            18
   D.  10000 FT:  170/20                               11
   E.  18000 FT:  160/10                               MS4
   F.  24000 FT:  120/10                               MS15
   G.  30000 FT:  050/10                               MS28
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      MAINLY CLOUDY WITH SHOWERS. ISOLATED SQUALLY
      THUNDERSTORMS.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1500 FT  SCT 3000 FT.  TEMPO FEW CB 1000 FT
      SCT 2000 FT  BKN 4000 FT.
   K. VISIBILITY    : 10 KM.  TEMPO 4000 M IN SHOWERS.  TEMPO 2000 M IN TS.
   L. 0 DEG. C LEVEL: 17500 FT      10 DEG. C LEVEL(S) : 10800 FT
   M. TURBULENCE    : MOD TO SEV NEAR CUNIM/TS AND NEAR HILLS. MOD OFFSHORE.
   N. SEA STATE     : 2.0-2.5 M     SEA TEMPERATURE    : 29 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE SOUTH TO SOUTHEASTERLY WINDS. MAINLY
     CLOUDY WITH SHOWERS AND ISOLATED SQUALLY
     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 05:20 HKT on 25 Jun 18

    VHHK SIGMET 1 VALID 242120/250120 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N1806 E11342 - N1742 E11306 - N1848 E11206 - N1906 E11336 - N1806 E11342 TOP FL450 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

    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 25/Jun/2018 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     32.5 C
Minimum Air Temperature                     26.4 C
Grass Minimum Temperature                   25.4 C
Relative Humidity                        67 - 96 Percent
Rainfall                                    18.1 mm 
Total rainfall since 1st January           625.9 mm
Against an average of                     1004.9 mm

Other Stations                Min                  Max
King's Park                  25.9 C               32.3 C
Wong Chuk Hang               25.9 C               31.1 C
Ta Kwu Ling                  25.7 C               32.0 C
Lau Fau Shan                 25.0 C               31.3 C
Tai Po                       26.2 C               30.6 C
Sha Tin                      26.2 C               31.6 C
Tuen Mun                     25.4 C               31.6 C
Tseung Kwan O                25.7 C               30.7 C
Sai Kung                     26.3 C               30.1 C
Cheung Chau                  25.2 C               30.7 C
Chek Lap Kok                 27.2 C               32.6 C
Tsing Yi                     25.8 C               33.3 C
Shek Kong                    25.8 C               32.9 C
Tsuen Wan Ho Koon            24.9 C               30.4 C
Tsuen Wan Shing Mun Valley   25.4 C               31.8 C
Hong Kong Park               25.4 C               31.3 C
Shau Kei Wan                 26.2 C               30.7 C
Kowloon City                 25.4 C               30.9 C
Happy Valley                 26.1 C               32.7 C
Wong Tai Sin                 26.1 C               31.5 C
Stanley                      25.8 C               31.2 C
Kwun Tong                    26.1 C               31.1 C
Sham Shui Po                 25.4 C               32.2 C
Kai Tak Runway Park          26.4 C               30.1 C
Yuen Long Park               25.2 C               33.0 C
Tai Mei Tuk               25.8 C               32.5 C

Duration of sunshine (King's Park):              7.1 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.
 

Yesterday's (24 Jun 2018) average ambient gamma radiation
dose rate taken outdoors in Hong Kong ranged from 0.08 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                           0.08
Tap Mun                             0.08
Kat O                               0.10
Yuen Ng Fan                         0.11
Tai Mei Tuk                         0.11
Sha Tau Kok                         0.10
Kwun Tong                           0.12
Sai Wan Ho                          0.08
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 24 Jun
     2003copy right image | Important notices | Privacy policy Last revision date: <25 Jun 2018> 

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