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Bulletin issued at 18:02 HKT 08/Aug/2018

At 6 p.m. at the Hong Kong Observatory the air temperature was 31 degrees Celsius and the relative humidity 72 per cent.
During the past hour the mean UV Index recorded at King's Park was 0.7. The intensity of UV radiation was low.

Please be reminded that:

The Very Hot Weather Warning is now in force. Very hot weather might cause adverse health effects. Members of the public should take care to avoid heatstroke.

The air temperatures at other places were:

King's Park 31 degrees;
Wong Chuk Hang 31 degrees;
Ta Kwu Ling 31 degrees;
Lau Fau Shan 31 degrees;
Tai Po 31 degrees;
Sha Tin 31 degrees;
Tuen Mun 31 degrees;
Tseung Kwan O 31 degrees;
Sai Kung 31 degrees;
Cheung Chau 30 degrees;
Chek Lap Kok 33 degrees;
Tsing Yi 31 degrees;
Tsuen Wan Ho Koon 29 degrees;
Tsuen Wan Shing Mun Valley 30 degrees;
Hong Kong Park 30 degrees;
Shau Kei Wan 30 degrees;
Kowloon City 30 degrees;
Happy Valley 32 degrees;
Wong Tai Sin 31 degrees;
Stanley 30 degrees;
Kwun Tong 30 degrees;
Sham Shui Po 31 degrees;
Kai Tak Runway Park 30 degrees;
Yuen Long Park 32 degrees;
Tai Mei Tuk 30 degrees.


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


Climatological Information for 8 Aug

Regional Weather in Hong Kong

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Hong Kong Climatology


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

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Bulletin updated at 17:45 HKT 08/Aug/2018

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

An anticyclone aloft is bringing mainly fine and very hot weather to southeastern China. Locally, temperatures over most parts of the territory rose to 33 degrees or above in the afternoon. Meanwhile, a broad area of low pressure over the central part of the South China Sea is bringing unsettled weather to the region.

Besides, Tropical Depression Yagi has intensified into a tropical storm. At 4 p.m., Yagi was centred about 950 kilometres southeast of Okinawa. It is forecast to move north at about 12 kilometres across the western North Pacific.

Weather forecast for tonight and tomorrow

Mainly cloudy. The minimum temperature will be about 27 degrees. Very hot with sunny periods tomorrow. The maximum temperature will be around 33 degrees. There will be isolated showers. More showers later. Moderate to fresh easterly winds.

Outlook : The weather will be unsettled with showers and squally thunderstorms on Friday and over the weekend.


(The above forecast period is valid up to 23:59 HKT tomorrow, 09/08/2018; 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 08/Aug/2018

N0 WARNING.

GENERAL SITUATION AT 072100 UTC:
AN EASTERLY AIRSTREAM IS GENERALLY AFFECTING THE FORECAST AREAS. LOW 1000HPA 16N 114E N SLOWLY INTST NC

MARINE FORECAST FOR 24 HOURS FROM 080100 UTC:

HONG KONG= E 4-5. ISOL SHOWERS AND TS. SEA UP TO 2 M. TEMP 33-27 C. =
KWANGTUNG= E 4-5, OCNL 6. ISOL SHOWERS AND TS. SEA UP TO 3 M. =
TAIWAN STRAIT= E TO NE 4-5. ISOL SHOWERS AND TS. SEA UP TO 2 M. =
BASHI= E 4-5. ISOL SHOWERS. SEA UP TO 2 M. SWELL E UP TO 2 M. =
PRATAS= E 4-5. ISOL SHOWERS AND TS. SEA UP TO 2 M. SWELL E UP TO 2 M. =
BALINTANG= E 4-5. ISOL SHOWERS. SEA UP TO 2 M. SWELL E UP TO 2 M. =
SCARBOROUGH= SE 5-6. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 2-3 M. SWELL SW 2 M. =
PARACEL= E TO NE 4-5, OCNL 6. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 3 M. =
TONKIN= E TO NE 4-5. ISOL SHOWERS AND TS. SEA UP TO 2 M. =
DANANG= W TO NW 4-5. DOWN TO 4000 M IN ISOL SQUALLY 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 16:30 HKT 08/Aug/2018

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 4:30 p.m. on 08 August 2018

    Warnings:
    Strong winds in all areas.

    Weather Situation:
    An easterly airstream is affecting the south China coastal waters. Besides, a broad area of low pressure over the central part of the South China Sea is bringing unsettled weather to the region.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    East force 4 to 5, occasionally force 6.
    Isolated squally showers and thunderstorms.
    Moderate to rough seas.

    Nan'ao and Shanwei:
    East force 4 to 5, occasionally force 6.
    Isolated squally showers and thunderstorms.
    Moderate to rough seas.

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

    Outlook for the next 48 hours
    East to southeasterly winds of force 5 to 6, becoming southerly winds of force 6 to 7 later. Scattered squally showers and thunderstorms.

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

    Waglan Island Wind east-northeast force 5
      Visibility 31 Kilometres

    Shantou Wind southeast force 3
      Visibility 30 Kilometres

    Dongsha Wind east force 3
      Visibility 10 Kilometres

    Huangmaozhou Wind east force 6

    Macau Wind north-northeast force 2
      Visibility 22 Kilometres

    Xisha Wind northeast force 3
      Visibility 22 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 08/AUG/2018
    (Next update at 01:30 HKT 09/AUG/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.  MEANWHILE, A BROAD AREA OF
     LOW PRESSURE OVER THE CENTRAL PART OF THE SOUTH
     CHINA SEA IS BRINGING UNSETTLED WEATHER TO THE
     REGION.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1800 TO 0400 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  090/10-15
                  TEMPO VRB/15G25 IN TS
       OFFSHORE:  090/20-25                            32-27
   B.   2000 FT:  120/20-25                            24
   C.   5000 FT:  080/15                               20
   D.  10000 FT:  090/15                               11
   E.  18000 FT:  110/10                               MS3
   F.  24000 FT:  120/5                                MS12
   G.  30000 FT:  200/5                                MS27
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      MAINLY CLOUDY. ISOLATED SHOWERS AND
      THUNDERSTORMS AT FIRST.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 2500 FT  SCT 4000 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) : 10600 FT
   M. TURBULENCE    : MOD TO SEV NEAR CUNIM/TS, OFFSHORE AND  NEAR HILLS
   N. SEA STATE     : 3.0-4.0 M     SEA TEMPERATURE    : 29 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE TO FRESH EASTERLY WINDS. SUNNY PERIODS.
     ISOLATED SHOWERS. MORE SHOWERS LATER.=

    ===================================================================
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 06:18 HKT on 08 Aug 18

    VHHK SIGMET 1 VALID 071820/072220 VHHH- VHHK HONG KONG FIR EMBD TS FCST S OF N1830 TOP FL450 STNR NC= VHHK SIGMET 2 VALID 072220/080220 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N1812 E11518 - N1642 E11400 - N1900 E11200 - N1942 E11400 - N1812 E11518 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 08/Aug/2018 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     34.2 C
Minimum Air Temperature                     28.4 C
Grass Minimum Temperature                   27.1 C
Relative Humidity                        65 - 84 Percent
Rainfall                                       0 mm 
Total rainfall since 1st January           989.2 mm
Against an average of                     1570.5 mm

Other Stations                Min                  Max
King's Park                  28.0 C               33.3 C
Wong Chuk Hang               26.8 C               33.1 C
Ta Kwu Ling                  25.5 C               34.7 C
Lau Fau Shan                 25.0 C               33.1 C
Tai Po                       27.0 C               32.9 C
Sha Tin                      26.6 C               32.8 C
Tuen Mun                     25.8 C               31.5 C
Tseung Kwan O                26.0 C               34.1 C
Sai Kung                     27.6 C               31.9 C
Cheung Chau                  26.6 C               32.3 C
Chek Lap Kok                 26.2 C               34.6 C
Tsing Yi                     25.4 C               33.1 C
Tsuen Wan Ho Koon            24.6 C               30.6 C
Tsuen Wan Shing Mun Valley   25.3 C               33.3 C
Hong Kong Park               27.4 C               33.3 C
Shau Kei Wan                 27.4 C               31.7 C
Kowloon City                 27.9 C               33.1 C
Happy Valley                 27.7 C               35.1 C
Wong Tai Sin                 27.4 C               33.1 C
Stanley                      27.9 C               33.2 C
Kwun Tong                    27.9 C               33.4 C
Sham Shui Po                 27.4 C               31.2 C
Kai Tak Runway Park          28.1 C               31.6 C
Yuen Long Park               26.0 C               34.5 C
Tai Mei Tuk               27.5 C               34.4 C

Duration of sunshine (King's Park):              5.1 H
The mean UV index recorded at King's Park yesterday was 3,
the UV intensity was Moderate.
The maximum UV index for yesterday was 11.
 

Yesterday's (07 Aug 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                           0.09
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                         0.14
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 07 Aug
     2003copy right image | Important notices | Privacy policy Last revision date: <08 Aug 2018> 

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