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Bulletin issued at 04:02 HKT 28/Aug/2019

At 4 a.m. at the Hong Kong Observatory the air temperature was 27 degrees Celsius and the relative humidity 85 per cent.

The air temperatures at other places were:

King's Park 27 degrees;
Wong Chuk Hang 25 degrees;
Ta Kwu Ling 25 degrees;
Lau Fau Shan 26 degrees;
Tai Po 25 degrees;
Sha Tin 26 degrees;
Tuen Mun 26 degrees;
Tseung Kwan O 25 degrees;
Sai Kung 27 degrees;
Cheung Chau 26 degrees;
Chek Lap Kok 28 degrees;
Tsing Yi 26 degrees;
Shek Kong 25 degrees;
Tsuen Wan Ho Koon 25 degrees;
Tsuen Wan Shing Mun Valley 24 degrees;
Shau Kei Wan 27 degrees;
Kowloon City 28 degrees;
Happy Valley 26 degrees;
Wong Tai Sin 26 degrees;
Stanley 25 degrees;
Kwun Tong 27 degrees;
Sham Shui Po 27 degrees;
Kai Tak Runway Park 27 degrees;
Yuen Long Park 25 degrees;
Tai Mei Tuk 26 degrees.

Here is the information on Tropical Depression Podul at 3 a.m.:
Location: 16.6 degrees north, 119.8 degrees east.


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


Climatological Information for 28 Aug

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Bulletin updated at 03:45 HKT 28/Aug/2019

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

An anticyclone aloft is bringing generally fine weather to southeastern China.

At 3 a.m., Tropical Depression Podul was centred about 260 kilometres north-northwest of Manila. It is forecast to move west-northwest at about 30 kilometres per hour across the central part of the South China Sea.

Weather forecast for today

Mainly fine. The minimum temperature will be about 27 degrees. It will be hazy. Very hot during the day. The maximum temperature will be around 34 degrees in the urban areas, and a couple of degrees higher in the New Territories. Light to moderate easterly winds.

Outlook : The weather will become unsettled and windier in the following couple of days.


(The above forecast period is valid up to 23:59 HKT today, 28/08/2019; 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 21:00 HKT 27/Aug/2019

GALE WARNING AREAS: SCARBOROUGH AND PARACEL.

GENERAL SITUATION AT 270900 UTC:
FOR DETAILS ON TROPICAL DEPRESSION PODUL (1912), PLEASE REFER TO THE 3-HRLY SHIPPING WARNINGS.

MARINE FORECAST FOR 24 HOURS FROM 271300 UTC:

HONG KONG= SE 4, BEC E TO NE 4-5. ISOL SHOWERS. DOWN TO 4000 M IN SOME HAZE. SEA UP TO 2 M. TEMP 28-34 C. =
KWANGTUNG= SE 4-5, BEC E TO NE 5-6. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 2 M, BEC 2-3 M. =
TAIWAN STRAIT= N TO NE 5-6. ISOL SHOWERS. SEA 2-3 M. =
BASHI= E TO NE 6-7, SE 7 LATER. DOWN TO 1000 M IN OCNL SQUALLY SHOWERS AND TS. SEA 3-4 M. SWELL E TO NE 3 M. =
PRATAS= NE 6-7, SE 7 LATER. DOWN TO 500 M IN FREQ SQUALLY SHOWERS AND TS. SEA 3-4 M. SWELL E TO NE 2 M. =
BALINTANG= E TO NE 6-7, SE 7 LATER. DOWN TO 500 M IN FREQ SQUALLY SHOWERS AND TS. SEA 3-4 M. SWELL E TO NE 3 M. =
SCARBOROUGH= N TO NE 6-7, BEC CYCLONIC 8. DOWN TO 500 M IN FREQ SQUALLY SHOWERS AND TS. SEA 3-4 M, BEC 6 M. SWELL NE 3 M, S 2 M. =
PARACEL= SE 4-5, BEC N TO NW 7-8. DOWN TO 500 M IN FREQ SQUALLY SHOWERS AND TS. SEA UP TO 2 M, BEC 4-6 M. SWELL S 2 M. =
TONKIN= S TO SE 4-5, N TO NW 4-5 LATER. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 2 M. =
DANANG= SE 4-5, W TO NW 4-5 LATER. 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.


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    • SOUTH CHINA COASTAL WATERS
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    South China Coastal Waters

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    Bulletin issued at 03:30 HKT 28/Aug/2019

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 3:30 a.m. on 28 August 2019

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

    Weather Situation:
    A southeasterly airstream is affecting the south China coastal waters.

    At 3 a.m., Tropical Depression Podul with maximum sustained winds of about 55 kilometres per hour near its centre was located at 16.6 degrees north, 119.8 degrees east. It is forecast to move west-northwest at about 30 kilometres per hour across the central part of the South China Sea.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    Southeast force 4, becoming east to northeast force 4 to 5.
    Some haze.
    Moderate seas.

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

    South of Hong Kong:
    Southeast force 4 to 5, becoming east to northeast force 5 to 6.
    Isolated squally showers and thunderstorms.
    Moderate seas, becoming rough.

    Shangchuan Dao:
    Southeast force 4 to 5, becoming north to northeast force 5 to 6.
    Isolated squally showers and thunderstorms.
    Moderate seas, becoming rough.

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

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

    Waglan Island Wind north-northwest force 2
      Visibility 24 Kilometres

    Shantou Wind west force 1
      Visibility 30 Kilometres

    Dongsha Wind north-northeast force 3
      Visibility 10 Kilometres

    Huangmaozhou Wind north-northeast force 2

    Macau Wind east force 1
      Visibility 23 Kilometres

    Xisha Wind east-northeast force 1
      Visibility 30 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 01:30 HKT 28/AUG/2019
    (Next update at 9:00-9:30 HKT 28/AUG/2019)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     NIL
II.  SYNOPSIS OF THE WEATHER SITUATION :
     AT 11 P.M. LAST NIGHT, TROPICAL DEPRESSION PODUL
     WAS LOCATED AT 16.1 DEGREES NORTH, 123.0 DEGREES
     EAST. IT IS FORECAST TO MOVE WEST-NORTHWEST AT
     ABOUT 16 KNOTS TOWARDS AND ACROSS LUZON.
     
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 0200 TO 1200 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  100/5-10
       OFFSHORE:  110/10                               28-33
   B.   2000 FT:  120/10                               25
   C.   5000 FT:  090/10                               20
   D.  10000 FT:  110/10                               13
   E.  18000 FT:  090/25                               1
   F.  24000 FT:  090/25                               MS11
   G.  30000 FT:  090/15                               MS24
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      MAINLY FINE WITH ISOLATED SHOWERS. LOCALISED
      HAZE.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1500 FT SCT 3000 FT
   K. VISIBILITY    : 9 KM. TEMPO 4000 M IN SHOWERS/HAZE.
   L. 0 DEG. C LEVEL: 18500 FT      10 DEG. C LEVEL(S) : 11800 FT
   M. TURBULENCE    : NIL.
   N. SEA STATE     : 0.5-1.0 M     SEA TEMPERATURE    : 26 DEG
IV.  FURTHER OUTLOOK: 
     LIGHT TO MODERATE EASTERLY WINDS. MAINLY FINE
     WITH ISOLATED SHOWERS. LOCALISED HAZE.=

    ===================================================================
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.

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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.

    There is no Significant Weather Information (SIGMET)

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    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

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    Bulletin issued at 03:30 HKT 28/Aug/2019


    Tropical Cyclone Warning

    At 271800 UTC, Tropical Depression Podul (1912) with central pressure 998 hectopascals was centred within 90 nautical miles of one six point six degrees north (16.6 N) one two zero point six degrees east (120.6 E) and is forecast to move west-northwest at about 16 knots for the next 24 hours.

    Maximum winds near the centre are estimated to be 30 knots.

    Radius of over 2 metre waves 240 nautical miles.

    Forecast position and intensity at 281800 UTC
    One seven point two degrees north (17.2 N)
    One one three point eight degrees east (113.8 E)
    Maximum winds 40 knots.

    Forecast position and intensity at 291800 UTC
    One eight point three degrees north (18.3 N)
    One zero nine point two degrees east (109.2 E)
    Maximum winds 55 knots.

    Forecast position and intensity at 301800 UTC
    One eight point eight degrees north (18.8 N)
    One zero four point three degrees east (104.3 E)
    Maximum winds 45 knots.

    Forecast position and intensity at 311800 UTC
    One nine point four degrees north (19.4 N)
    One zero two point zero degrees east (102.0 E)
    Maximum winds 25 knots.

    Forecast position and intensity at 011800 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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