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Bulletin issued at 18:02 HKT 28/Aug/2018

At 6 p.m. at the Hong Kong Observatory the air temperature was 26 degrees Celsius and the relative humidity 95 per cent.
During the past hour the mean UV Index recorded at King's Park was 0.1. The intensity of UV radiation was low.

Please be reminded that:

The Thunderstorm Warning has been issued. It will remain effective until 7:00 p.m. today. A few squally thunderstorms are expected to occur over Hong Kong.

The air temperatures at other places were:

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

Between 4:45 and 5:45 p.m., the rainfall recorded in various regions were:

Islands District 0 to 10 mm;
Sai Kung 0 to 6 mm;
Tsuen Wan 2 to 4 mm;
Kwai Tsing 1 to 4 mm;
Tuen Mun 1 to 3 mm;
Yuen Long 0 to 3 mm;
Tai Po 0 to 2 mm;
Central & Western District 0 to 2 mm;
Southern District 0 to 1 mm;
Sham Shui Po 1 mm;
Wong Tai Sin 0 to 1 mm;
Sha Tin 0 to 1 mm;
Yau Tsim Mong 0 to 1 mm;
North District 0 to 1 mm;
Kowloon City 0 to 1 mm;
Eastern District 0 to 1 mm;
Kwun Tong 0 to 1 mm.


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


Climatological Information for 28 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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UV Index Forecast |  Weather Information for South China Coastal Waters

Bulletin updated at 17:45 HKT 28/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 30 millimetres of rainfall were recorded over most parts of the territory in the afternoon, and rainfall even exceeded 70 millimetres over the northern part of the New Territories.

Weather forecast for tonight and tomorrow

Cloudy to overcast with heavy showers and squally thunderstorms. Temperatures will range between 25 and 28 degrees. Moderate to fresh southwesterly winds, occasionally strong offshore and on high ground.

Outlook : Still heavy showers and squally thunderstorms on Thursday. Showers easing off gradually with sunny intervals in the following couple of days.


(The above forecast period is valid up to 23:59 HKT tomorrow, 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 28/Aug/2018

GALE WARNING AREAS: KWANGTUNG AND TAIWAN STRAIT.

GENERAL SITUATION AT 272100 UTC:
TROUGH 21N 109E 23N 114E 24N 119E QSTNR.

MARINE FORECAST FOR 24 HOURS FROM 280100 UTC:

HONG KONG= S TO SW 4-5, BEC 6. DOWN TO 1000 M IN SCT HEAVY SQUALLY SHOWERS AND TS. SEA UP TO 2 M, BEC 3 M. SWELL SW UP TO 2 M. TEMP 29-25 C. =
KWANGTUNG= 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 SW 2-3 M. =
TAIWAN STRAIT= S 7-8. DOWN TO 1000 M IN SCT HEAVY SQUALLY SHOWERS AND TS. SEA 4-6 M. SWELL S TO SW 2-3 M. =
BASHI= 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. =
PRATAS= S TO SW 6-7. DOWN TO 1000 M IN SCT HEAVY SQUALLY SHOWERS AND TS. SEA 3-4 M. SWELL SW 2-3 M. =
BALINTANG= 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. =
SCARBOROUGH= S TO SW 6-7. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 3-4 M. SWELL SW 2-3 M. =
PARACEL= SW 6-7. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 3-4 M. SWELL SW 2-3 M. =
TONKIN= W 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= 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.


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    • SOUTH CHINA COASTAL WATERS
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    South China Coastal Waters

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    9-day Weather Forecast | UV Index Forecast | Weather Information for Fishermen

    Bulletin issued at 16:30 HKT 28/Aug/2018

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 4:30 p.m. on 28 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:
    Southwest force 5 to 6, occasionally force 7.
    Scattered heavy squally showers and thunderstorms.
    Moderate to rough seas.

    Nan'ao:
    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:
    Southwest force 6 to 7.
    Scattered heavy squally showers and thunderstorms.
    Rough seas.

    Outlook for the next 48 hours
    South to southwesterly winds of force 6 to 7, up to force 8 in east. Scattered heavy squally showers and thunderstorms.

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

    Waglan Island Wind west force 2

    Shantou Wind east-northeast force 1
      Visibility 30 Kilometres

    Huangmaozhou Wind west-southwest force 3

    Macau Wind southeast force 1
      Visibility 2700 Metres in rain

    Xisha Wind southwest force 5
      Visibility 11 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 28/AUG/2018
    (Next update at 01:30 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 THUNDERY
     SHOWERS TO THE COAST OF GUANGDONG AND THE
     NORTHERN PART OF THE SOUTH CHINA SEA.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1800 TO 0400 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  210/10-15
                  TEMPO VRB/25G35 IN TS
       OFFSHORE:  210/15-20, OCNL 25                   27-24
   B.   2000 FT:  210/15-20, OCNL 25                   22
   C.   5000 FT:  220/20                               19
   D.  10000 FT:  230/20                               11
   E.  18000 FT:  120/10                               MS1
   F.  24000 FT:  080/15                               MS12
   G.  30000 FT:  070/15                               MS24
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      CLOUDY TO OVERCAST WITH HEAVY SHOWERS AND
      SQUALLY THUNDERSTORMS.
   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    : 7 KM.  TEMPO 3000 M IN SHOWERS.
                      TEMPO 1500 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, OFFSHORE
                      AND NEAR HILLS.
   N. SEA STATE     : 2.0-3.0 M     SEA TEMPERATURE    : 27 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE TO FRESH SOUTHWESTERLY WINDS,
     OCCASIONALLY STRONG OFFSHORE AND ON HIGH GROUND.
     CLOUDY TO OVERCAST WITH HEAVY SHOWERS AND
     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 18:25 HKT on 28 Aug 18

    VHHK SIGMET 2 VALID 280630/281030 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N2100 E11730 - N1642 E11400 - N1700 E11342 - N1936 E11348 - N2136 E11148 - N2400 E11730 - N2100 E11730 TOP FL450 STNR NC= VHHK SIGMET 3 VALID 281030/281430 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N2100 E11730 - N1830 E11530 - N2030 E11230 - N2218 E11330 - N2336 E11630 - N2348 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 28/Aug/2018 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     29.9 C
Minimum Air Temperature                     25.2 C
Grass Minimum Temperature                   24.5 C
Relative Humidity                        74 - 95 Percent
Rainfall                                    27.3 mm 
Total rainfall since 1st January          1481.6 mm
Against an average of                     1869.6 mm

Other Stations                Min                  Max
King's Park                  24.7 C               30.2 C
Wong Chuk Hang               24.5 C               28.9 C
Ta Kwu Ling                  24.8 C               29.6 C
Lau Fau Shan                 23.9 C               28.6 C
Tai Po                       24.9 C               29.6 C
Sha Tin                      25.1 C               30.8 C
Tuen Mun                     24.5 C               29.1 C
Tseung Kwan O                24.5 C               30.0 C
Sai Kung                     24.9 C               29.7 C
Cheung Chau                  24.3 C               28.4 C
Chek Lap Kok                 25.0 C               30.6 C
Tsing Yi                     24.7 C               29.7 C
Shek Kong                    24.7 C               30.2 C
Tsuen Wan Ho Koon            24.0 C               27.7 C
Tsuen Wan Shing Mun Valley   24.5 C               29.5 C
Hong Kong Park               24.3 C               29.1 C
Shau Kei Wan                 24.6 C               30.5 C
Kowloon City                 24.5 C               30.6 C
Happy Valley                 24.9 C               30.5 C
Wong Tai Sin                 24.8 C               30.0 C
Stanley                      24.5 C               29.0 C
Kwun Tong                    24.7 C               30.7 C
Sham Shui Po                 24.7 C               30.3 C
Kai Tak Runway Park          24.7 C               31.1 C
Yuen Long Park               24.5 C               29.4 C
Tai Mei Tuk               24.5 C               30.3 C

Duration of sunshine (King's Park):              1.8 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 7.
 

Yesterday's (27 Aug 2018) average ambient gamma radiation
dose rate taken outdoors in Hong Kong ranged from 0.09 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                           0.10
Tap Mun                             0.10
Kat O                               0.10
Yuen Ng Fan                         0.13
Tai Mei Tuk                         0.12
Sha Tau Kok                         0.11
Kwun Tong                           0.13
Sai Wan Ho                          0.09
King's Park                         0.15
Tsim Bei Tsui                       0.14
Cape D'Aguilar                      0.14
Chek Lap Kok                        0.15

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 27 Aug
     2003copy right image | Important notices | Privacy policy Last revision date: <28 Aug 2018> 

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