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Bulletin issued at 12:16 HKT 29/Aug/2018

At noon at the Hong Kong Observatory the air temperature was 29 degrees Celsius and the relative humidity 78 per cent.
During the past hour the mean UV Index recorded at King's Park was 3. The intensity of UV radiation was moderate.

Please be reminded that:

The Thunderstorm Warning has been issued. It will remain effective until 2:30 p.m. today. Isolated thunderstorms are expected to occur over Hong Kong.

The air temperatures at other places were:

King's Park 29 degrees;
Wong Chuk Hang 28 degrees;
Ta Kwu Ling 25 degrees;
Lau Fau Shan 26 degrees;
Tai Po 26 degrees;
Sha Tin 29 degrees;
Tuen Mun 28 degrees;
Tseung Kwan O 29 degrees;
Sai Kung 28 degrees;
Cheung Chau 27 degrees;
Chek Lap Kok 29 degrees;
Tsing Yi 29 degrees;
Shek Kong 25 degrees;
Tsuen Wan Ho Koon 26 degrees;
Tsuen Wan Shing Mun Valley 27 degrees;
Hong Kong Park 28 degrees;
Shau Kei Wan 29 degrees;
Kowloon City 29 degrees;
Happy Valley 29 degrees;
Wong Tai Sin 29 degrees;
Stanley 28 degrees;
Kwun Tong 29 degrees;
Sham Shui Po 29 degrees;
Kai Tak Runway Park 29 degrees;
Yuen Long Park 27 degrees;
Tai Mei Tuk 26 degrees.

Between 10:45 and 11:45 a.m., the rainfall recorded in various regions were:

Yuen Long 0 to 18 mm;
Tai Po 0 to 17 mm;
North District 0 to 15 mm;
Tsuen Wan 0 to 11 mm;
Tuen Mun 0 to 6 mm;
Kwai Tsing 0 to 6 mm;
Sai Kung 0 to 3 mm;
Kwun Tong 0 to 2 mm;
Kowloon City 0 to 1 mm;
Islands District 0 to 1 mm.

3.7 millimetres of rainfall were recorded at the Hong Kong Observatory between midnight last night and midday today.


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


Climatological Information for 29 Aug

Regional Weather in Hong Kong

Information on Tropical Cyclones

Hong Kong Climatology


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UV Index Forecast |  Weather Information for South China Coastal Waters

Bulletin updated at 11:45 HKT 29/Aug/2018

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

A trough of low pressure is bringing thundery showers to the coast of Guangdong and the northern part of the South China Sea. Locally, more than 10 millimetres of rainfall were recorded over parts of the New Territories in the past few hours.

Weather forecast for this afternoon and tonight

Cloudy with occasional showers and a few squally thunderstorms. Showers will be heavy at times. Moderate to fresh south to southwesterly winds.

Outlook : Still heavy showers at first tomorrow. Showers easing off gradually with sunny intervals in the following couple of days.


(The above forecast period is valid up to 23:59 HKT today, 29/08/2018; 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 29/Aug/2018

GALE WARNING AREAS: KWANGTUNG AND TAIWAN STRAIT.

GENERAL SITUATION AT 282100 UTC:
TROUGH 21N 107E 23N 113E 25N 119E QSTNR.

MARINE FORECAST FOR 24 HOURS FROM 290100 UTC:

HONG KONG= S TO SW 5-6. DOWN TO 1000 M IN SCT HEAVY SQUALLY SHOWERS AND TS. SEA 2-3 M. SWELL SW UP TO 2 M. TEMP 28-25 C. =
KWANGTUNG= S TO SW 6-7, OCNL 8 IN E. DOWN TO 1000 M IN SCT HEAVY SQUALLY SHOWERS AND TS. SEA 3-4 M, UP TO 6 M IN E. SWELL S TO SW 2-3 M. =
TAIWAN STRAIT= S 6-7, OCNL 8. DOWN TO 1000 M IN SCT HEAVY SQUALLY SHOWERS AND TS. SEA UP TO 6 M. SWELL S TO SW 2-3 M. =
BASHI= S 5-6, OCNL 7. DOWN TO 1000 M IN SCT HEAVY SQUALLY SHOWERS AND TS. SEA UP TO 4 M. SWELL S TO SW 2-3 M. =
PRATAS= S TO SW 6-7. DOWN TO 1000 M IN SCT HEAVY SQUALLY SHOWERS AND TS. SEA 3-4 M. SWELL S TO SW 2-3 M. =
BALINTANG= S 5-6, OCNL 7. DOWN TO 1000 M IN SCT HEAVY SQUALLY SHOWERS AND TS. SEA UP TO 4 M. SWELL S TO SW 2-3 M. =
SCARBOROUGH= S 5-6, OCNL 7. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA UP TO 4 M. SWELL S TO SW 2-3 M. =
PARACEL= S TO SW 6-7. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 3-4 M. SWELL SW 2-3 M. =
TONKIN= S TO SW 5-6, OCNL 7. DOWN TO 1000 M IN SCT HEAVY SQUALLY SHOWERS AND TS. SEA UP TO 4 M. SWELL S 2 M. =
DANANG= S TO SW 5-6, OCNL 7. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 4 M. SWELL SW 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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    • SOUTH CHINA COASTAL WATERS
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    South China Coastal Waters

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    Bulletin issued at 12:30 HKT 29/Aug/2018

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 12:30 p.m. on 29 August 2018

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

    Weather Situation:
    A trough of low pressure is bringing unsettled weather to the south China coastal waters.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    South to southwest force 5 to 6.
    Scattered heavy squally showers and thunderstorms.
    Moderate to rough seas.

    Nan'ao:
    South to southwest force 6 to 7, occasionally force 8.
    Scattered heavy squally showers and thunderstorms.
    Rough to very rough seas.

    Shanwei, South of Hong Kong and Shangchuan Dao:
    South to southwest force 6 to 7.
    Scattered heavy squally showers and thunderstorms.
    Rough seas.

    Outlook for the next 48 hours
    Southerly winds of force 5 to 6, up to force 7 in east at first. Scattered squally showers and thunderstorms.

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

    Waglan Island Wind southwest force 6

    Shantou Wind southeast force 2
      Visibility 4300 Metres in showers

    Dongsha Wind southwest force 4
      Visibility 10 Kilometres

    Huangmaozhou Wind south force 4

    Macau Wind south-southwest force 3
      Visibility 21 Kilometres

    Xisha Wind southwest force 5
      Visibility 13 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 12:30 HKT 29/AUG/2018
    (Next update at 17:30 HKT 29/AUG/2018)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     CUNIM/TS AND ASSOCIATED HAZARDS.
     STRONG WINDS AND SEV TURB.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     A TROUGH OF LOW PRESSURE IS BRINGING UNSETTLED
     WEATHER TO THE SOUTH CHINA COASTAL AREAS.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1300 TO 2300 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  200/10-15
                  TEMPO VRB/20G30 IN TS
       OFFSHORE:  210/15-20, OCNL 25                   31-26
   B.   2000 FT:  210/15-20, OCNL 25                   23
   C.   5000 FT:  230/20-25                            18
   D.  10000 FT:  260/20                               11
   E.  18000 FT:  250/15                               MS1
   F.  24000 FT:  250/10                               MS10
   G.  30000 FT:  050/15                               MS23
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      CLOUDY WITH OCCASIONAL SHOWERS AND A FEW
      SQUALLY
 THUNDERSTORMS. SHOWERS WILL BE HEAVY
      AT TIMES.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1200 FT  SCT 2500 FT  BKN 8000 FT.  
      TEMPO FEW CB 800 FT  SCT 1500 FT  BKN 4000 FT.
   K. VISIBILITY    : 8 KM.  TEMPO 3000 M IN SHOWERS. 
                      TEMPO 1500 M IN TS.
   L. 0 DEG. C LEVEL: 16500 FT      10 DEG. C LEVEL(S) : 10800 FT
   M. TURBULENCE    : MOD TO SEV NEAR CUNIM/TS, OFFSHORE AND NEAR HILLS
   N. SEA STATE     : 2.0-3.0 M     SEA TEMPERATURE    : 27 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE TO FRESH SOUTH TO SOUTHWESTERLY WINDS,
     OCCASIONALLY STRONG OFFSHORE AND ON HIGH GROUND.
     CLOUDY WITH SHOWERS AND A FEW SQUALLY

     THUNDERSTORMS. SHOWERS WILL BE HEAVY AT TIMES.=

    ===================================================================
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 10:20 HKT on 29 Aug 18

    VHHK SIGMET 1 VALID 290230/290630 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N2100 E11730 - N1906 E11600 - N1912 E11248 - N2124 E11130 - N2130 E11130 - N2400 E11730 - N2100 E11730 TOP FL450 STNR NC= VHHK SIGMET 6 VALID 282230/290230 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N2100 E11730 - N1942 E11624 - N1906 E11600 - N1918 E11212 - N2048 E11212 - N2312 E11730 - N2100 E11730 TOP FL430 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 29/Aug/2018 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     29.2 C
Minimum Air Temperature                     25.2 C
Grass Minimum Temperature                   24.3 C
Relative Humidity                        80 - 97 Percent
Rainfall                                    71.6 mm 
Total rainfall since 1st January          1553.2 mm
Against an average of                     1878.0 mm

Other Stations                Min                  Max
King's Park                  24.9 C               29.7 C
Wong Chuk Hang               24.1 C               28.6 C
Ta Kwu Ling                  24.4 C               29.6 C
Lau Fau Shan                 23.9 C               30.2 C
Tai Po                       25.1 C               28.0 C
Sha Tin                      24.9 C               30.1 C
Tuen Mun                     24.5 C               30.0 C
Tseung Kwan O                24.4 C               28.8 C
Sai Kung                     25.1 C               28.5 C
Cheung Chau                  24.1 C               26.9 C
Chek Lap Kok                 25.3 C               30.4 C
Tsing Yi                     25.0 C               30.4 C
Shek Kong                    24.6 C               30.6 C
Tsuen Wan Ho Koon            24.1 C               27.4 C
Tsuen Wan Shing Mun Valley   24.8 C               29.5 C
Hong Kong Park               24.2 C               28.9 C
Shau Kei Wan                 24.5 C               28.1 C
Kowloon City                 24.4 C               30.8 C
Happy Valley                 24.9 C               30.1 C
Wong Tai Sin                 24.7 C               31.3 C
Stanley                      23.9 C               27.8 C
Kwun Tong                    24.7 C               30.9 C
Sham Shui Po                 24.7 C               30.7 C
Kai Tak Runway Park          24.9 C               28.5 C
Yuen Long Park               24.4 C               31.9 C
Tai Mei Tuk               24.3 C               29.3 C

Duration of sunshine (King's Park):              1.2 H
The mean UV index recorded at King's Park yesterday was 2,
the UV intensity was Low.
The maximum UV index for yesterday was 8.
 

Yesterday's (28 Aug 2018) average ambient gamma radiation
dose rate taken outdoors in Hong Kong ranged from 0.10 to
0.16 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                           0.10
Tap Mun                             0.10
Kat O                               0.10
Yuen Ng Fan                         0.13
Tai Mei Tuk                         0.13
Sha Tau Kok                         0.11
Kwun Tong                           0.13
Sai Wan Ho                          0.10
King's Park                         0.16
Tsim Bei Tsui                       0.14
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 28 Aug
     2003copy right image | Important notices | Privacy policy Last revision date: <29 Aug 2018> 

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