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Bulletin issued at 19:02 HKT 28/Aug/2019

At 7 p.m. at the Hong Kong Observatory the air temperature was 30 degrees Celsius and the relative humidity 78 per cent.

Please be reminded that:

The Tropical Cyclone Signal No. 1 has been issued.

The air temperatures at other places were:

King's Park 30 degrees;
Wong Chuk Hang 30 degrees;
Ta Kwu Ling 30 degrees;
Lau Fau Shan 31 degrees;
Tai Po 30 degrees;
Sha Tin 30 degrees;
Tuen Mun 30 degrees;
Tseung Kwan O 29 degrees;
Sai Kung 30 degrees;
Cheung Chau 28 degrees;
Chek Lap Kok 33 degrees;
Tsing Yi 31 degrees;
Shek Kong 31 degrees;
Tsuen Wan Ho Koon 29 degrees;
Tsuen Wan Shing Mun Valley 31 degrees;
Shau Kei Wan 29 degrees;
Kowloon City 30 degrees;
Happy Valley 31 degrees;
Wong Tai Sin 30 degrees;
Stanley 29 degrees;
Kwun Tong 29 degrees;
Sham Shui Po 31 degrees;
Kai Tak Runway Park 30 degrees;
Yuen Long Park 31 degrees;
Tai Mei Tuk 29 degrees.

Here is the information on Tropical Storm Podul:
Location: 16.8 degrees north, 114.9 degrees east; Maximum sustained wind near its centre: 75 km/h.


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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Bulletin updated at 18:45 HKT 28/Aug/2019

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

Weather forecast for tonight and tomorrow

Becoming cloudy. Sunny intervals and a few squally showers tomorrow. There will be more showers and thunderstorms later. Temperatures will range between 27 and 32 degrees. Moderate easterly winds, strengthening gradually tomorrow. There will be swells.

Outlook : Showers and squally thunderstorms in the following couple of days. Showers will be heavy at times.


(The above forecast period is valid up to 23:59 HKT tomorrow, 29/08/2019; 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/2019

GALE WARNING AREAS: PRATAS, SCARBOROUGH AND PARACEL.

GENERAL SITUATION AT 272100 UTC:
FOR DETAILS ON TROPICAL STORM PODUL (1912), PLEASE REFER TO THE 3-HRLY SHIPPING WARNINGS.

MARINE FORECAST FOR 24 HOURS FROM 280100 UTC:

HONG KONG= E TO NE 4-5, 6 LATER. DOWN TO 4000 M IN SOME HAZE. SEA UP TO 2 M, 3 M LATER. SWELL E 2 M. TEMP 34-28 C. =
KWANGTUNG= E TO NE 5-6, 7 LATER. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 2-3 M, 4 M LATER. SWELL E 2 M. =
TAIWAN STRAIT= E TO NE 5-6. ISOL SHOWERS AND TS. SEA 2-3 M. =
BASHI= E TO SE 5-6. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 2-3 M. SWELL E TO NE 3-5 M. =
PRATAS= NE 6-7, BEC E TO SE 7-8. DOWN TO 500 M IN FREQ SQUALLY SHOWERS AND TS. SEA 3-4 M, BEC 4-6 M. SWELL E TO NE 3-5 M. =
BALINTANG= E TO SE 5-6, OCNL 7. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA UP TO 4 M. SWELL E TO NE 3-5 M. =
SCARBOROUGH= CYCLONIC 8-9, BEC S TO SW 7-8. DOWN TO 500 M IN FREQ SQUALLY SHOWERS AND TS. SEA 6-8 M, BEC 4-6 M. SWELL E TO NE 3-5 M, SW 3 M. =
PARACEL= N TO NW 7-8, BEC CYCLONIC 8-9. DOWN TO 500 M IN FREQ SQUALLY SHOWERS AND TS. SEA 4-6 M, BEC 6-8 M. SWELL E TO NE 3-5 M, SW 3 M. =
TONKIN= N TO NE 5-6. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 2-3 M. =
DANANG= N 4-5, BEC W TO NW 5-6. DOWN TO 500 M IN FREQ SQUALLY SHOWERS AND TS. SEA UP TO 2 M, BEC 2-3 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 19:30 HKT 28/Aug/2019

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 7:30 p.m. on 28 August 2019

    Warnings:
    Storm force winds in Shangchuan Dao. 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.

    At 7 p.m., Tropical Storm Podul with maximum sustained winds of about 75 kilometres per hour near its centre was located at 16.8 degrees north, 114.9 degrees east. It is forecast to move west or west-northwest at about 25 kilometres per hour across the central part of the South China Sea towards the vicinity of the southern part of Hainan Island.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    East force 5 to 6.
    A few squally showers. More showers and thunderstorms later.
    Moderate to rough seas.

    Nan'ao and Shanwei:
    East to southeast force 5 to 6, occasionally force 7.
    Scattered squally showers and thunderstorms.
    Moderate to rough seas.

    South of Hong Kong:
    East to northeast force 5 to 6, occasionally force 7.
    Scattered squally showers and thunderstorms.
    Moderate to rough seas.

    Shangchuan Dao:
    East to northeast force 5 to 6, occasionally force 7, up to force 10 later.
    Frequent heavy squally showers and thunderstorms.
    Moderate to rough seas, becoming high seas later.

    Outlook for the next 48 hours
    East to southeasterly winds of force 6 to 7. Frequent heavy squally showers and thunderstorms.

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

    Waglan Island Wind east-northeast force 4
      Visibility 19 Kilometres

    Shantou Wind east-southeast force 2
      Visibility 30 Kilometres

    Dongsha Wind northeast force 4
      Visibility 10 Kilometres

    Huangmaozhou Wind east force 5

    Xisha Wind northwest force 4
      Visibility 3300 Metres in rain

  • Explanation of Seas or Sea Waves
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  • Descriptive Terms of Wind Speeds
  • Visibility Readings in Hong Kong Waters
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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/2019
    (Next update at 01:30 HKT 29/AUG/2019)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     NIL
II.  SYNOPSIS OF THE WEATHER SITUATION :
     AT 5 P.M., TROPICAL STORM PODUL WAS LOCATED AT
     16.8 DEGREES NORTH, 115.5 DEGREES EAST. IT IS
     FORECAST TO MOVE WEST OR WEST-NORTHWEST AT ABOUT
     14 KNOTS ACROSS THE CENTRAL PART OF THE SOUTH
     CHINA SEA TOWARDS THE VICINITY OF THE SOUTHERN
     PART OF HAINAN ISLAND.  
     
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1800 TO 0400 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  090/5-10
                  BECMG 090/10-15
       OFFSHORE:  090/10
                  BECMG 090/15-20                      33-27
   B.   2000 FT:  030/10-15
                  BECMG 080/15-25                      24
   C.   5000 FT:  080/20-25                            21
   D.  10000 FT:  080/25-30                            12
   E.  18000 FT:  100/25-30                            MS2
   F.  24000 FT:  090/25-30                            MS12
   G.  30000 FT:  100/25                               MS25
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      BECOMING CLOUDY. ISOLATED SHOWERS TOMORROW
      MORNING.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 2000 FT.
   K. VISIBILITY    : 9 KM. TEMPO 4000 M IN SHOWERS.
   L. 0 DEG. C LEVEL: 17500 FT      10 DEG. C LEVEL(S) : 11800 FT
   M. TURBULENCE    : MOD OFFSHORE, MOD TO SEV NEAR HILLS.
   N. SEA STATE     : 1.0-3.0 M     SEA TEMPERATURE    : 27 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE TO FRESH EASTERLY WINDS, OCCASIONALLY
     STRONG OFFSHORE. SUNNY INTERVALS AND A FEW
     SQUALLY SHOWERS.=

    ===================================================================
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 18:30 HKT on 28 Aug 19

    VHHK SIGMET 4 VALID 280845/281245 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N2100 E11730 - N1642 E11400 - N1930 E11130 - N1956 E11130 - N2135 E11730 - N2100 E11730 TOP FL510 MOV WNW 14KT NC= VHHK SIGMET 5 VALID 281340/281800 VHHH- VHHK HONG KONG FIR TC PODUL PSN N1706 E11424 CB FCST AT 1340Z WI 240NM OF TC CENTRE TOP FL510 MOV WNW 14KT NC FCST AT 1800Z TC CENTRE PSN N1724 E11324=

    Please click here for more about the SIGMET

    TROPICAL CYCLONE WARNING Skip to main content
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    Tropical Cyclone Warnings

    Bulletin issued at 18:45 HKT 28/Aug/2019

    Tropical Cyclone Warning Bulletin

    Here is the latest Tropical Cyclone Warning Bulletin issued by the Hong Kong Observatory.

    The Standby Signal, No. 1 is in force.

    This means that a tropical cyclone now centred within about 800 kilometres of Hong Kong may affect us.

    At 7 p.m., Tropical Storm Podul was estimated to be about 610 kilometres south of Hong Kong (near 16.8 degrees north 114.9 degrees east) and is forecast to move west or west-northwest at about 25 kilometres per hour across the central part of the South China Sea towards the vicinity of the southern part of Hainan Island.

    According to the present forecast track, Podul will maintain a distance of over 500 kilometres from Hong Kong today, and local winds will not generally strengthen. The chance of issuing the Strong Wind Signal, No 3 today is not high.

    (Precautionary Announcements with No. 1 Signal)

    1. Every precaution should be taken. Objects likely to be blown away should be secured or taken indoors.

    2. Drains should now be cleared of leaves and rubbish. People in low-lying areas should take precautions against flooding.

    3. People planning to visit Guangdong, Macau, outlying islands or remote parts of Hong Kong should note that changes in weather may affect your trips.

    4. There will be swells. You are advised to stay away from the shoreline.

    5. Listen to radio, watch TV or browse the Hong Kong Observatory's website and mobile app for the latest information on the tropical cyclone.
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    TROPICAL CYCLONE WARNING FOR SHIPPING
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    Tropical Cyclone Warning for Shipping

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    Severe Weather Information Centre

    Bulletin issued at 18:30 HKT 28/Aug/2019


    Tropical Cyclone Warning

    At 280900 UTC, Tropical Storm Podul (1912) with central pressure 990 hectopascals was centred within 90 nautical miles of one six point eight degrees north (16.8 N) one one five point five degrees east (115.5 E) and is forecast to move west or west-northwest at about 14 knots for the next 24 hours.

    Maximum winds near the centre are estimated to be 40 knots.

    Radius of over 33 knot winds 120 nautical miles.
    Radius of over 2 metre waves 240 nautical miles.

    Forecast position and intensity at 290900 UTC
    One eight point one degrees north (18.1 N)
    One one zero point two degrees east (110.2 E)
    Maximum winds 50 knots.

    Forecast position and intensity at 300900 UTC
    One eight point two degrees north (18.2 N)
    One zero five point four degrees east (105.4 E)
    Maximum winds 45 knots.

    Forecast position and intensity at 310900 UTC
    Dissipated over land.



    The Hong Kong Observatory's tropical cyclone warnings for shipping are issued about one and a half hours after the time of observation. They incorporate additional information derived from surface and upper-air data and may therefore be slightly different from the real-time satellite or radar-based positions given in the hourly bulletins for public.

    While the forecast positions and track indicate the most likely future path of the tropical cyclone, they may deviate from the actual path taken by the storm.

    Tropical Cyclone Track
    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/2019 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     31.4 C
Minimum Air Temperature                     26.9 C
Grass Minimum Temperature                   25.9 C
Relative Humidity                        78 - 95 Percent
Rainfall                                     2.9 mm 
Total rainfall since 1st January          1976.2 mm
Against an average of                     1869.6 mm

Other Stations                Min                  Max
King's Park                  26.4 C               31.0 C
Wong Chuk Hang               25.6 C               31.4 C
Ta Kwu Ling                  25.6 C               33.1 C
Lau Fau Shan                 25.4 C               31.4 C
Tai Po                       25.7 C               30.6 C
Sha Tin                      26.2 C               32.8 C
Tuen Mun                     26.5 C               31.8 C
Tseung Kwan O                25.9 C               31.1 C
Sai Kung                     26.4 C               31.6 C
Chek Lap Kok                 27.5 C               32.5 C
Tsing Yi                     25.9 C               33.1 C
Shek Kong                    25.5 C               33.6 C
Tsuen Wan Shing Mun Valley   25.3 C               32.7 C
Shau Kei Wan                 25.8 C               30.9 C
Kowloon City                 26.4 C               32.4 C
Happy Valley                 26.0 C               32.7 C
Wong Tai Sin                 26.2 C               32.4 C
Stanley                      26.7 C               32.9 C
Kwun Tong                    26.6 C               32.2 C
Sham Shui Po                 26.7 C               33.0 C
Kai Tak Runway Park          26.5 C               30.5 C
Yuen Long Park               25.5 C               33.5 C
Tai Mei Tuk               26.1 C               31.9 C

Duration of sunshine (King's Park):              4.3 H
The mean UV index recorded at King's Park yesterday was 4,
the UV intensity was Moderate.
The maximum UV index for yesterday was 11.
 

Yesterday's (27 Aug 2019) 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                         0.13
Tai Mei Tuk                         0.11
Sha Tau Kok                         0.10
Kwun Tong                           0.12
Sai Wan Ho                          0.09
King's Park                         0.14
Tsim Bei Tsui                       0.13
Cape D'Aguilar                      0.12
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 27 Aug
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