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Bulletin issued at 15:02 HKT 29/Aug/2019

At 3 p.m. at the Hong Kong Observatory the air temperature was 28 degrees Celsius and the relative humidity 91 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 4:30 p.m. today. Isolated squally thunderstorms are expected to occur over Hong Kong.

The air temperatures at other places were:

King's Park 28 degrees;
Wong Chuk Hang 28 degrees;
Ta Kwu Ling 29 degrees;
Lau Fau Shan 28 degrees;
Tai Po 27 degrees;
Sha Tin 28 degrees;
Tuen Mun 27 degrees;
Tseung Kwan O 28 degrees;
Sai Kung 28 degrees;
Cheung Chau 27 degrees;
Chek Lap Kok 29 degrees;
Tsing Yi 28 degrees;
Shek Kong 28 degrees;
Tsuen Wan Ho Koon 27 degrees;
Tsuen Wan Shing Mun Valley 27 degrees;
Shau Kei Wan 27 degrees;
Kowloon City 28 degrees;
Happy Valley 30 degrees;
Wong Tai Sin 28 degrees;
Stanley 28 degrees;
Kwun Tong 28 degrees;
Sham Shui Po 28 degrees;
Kai Tak Runway Park 28 degrees;
Yuen Long Park 28 degrees;
Tai Mei Tuk 28 degrees.

Between 1:45 and 2:45 p.m., lightning was detected over all regions. The rainfall recorded in various regions were:

Islands District 0 to 17 mm;
Kwun Tong 7 to 11 mm;
Sai Kung 0 to 11 mm;
Tsuen Wan 6 to 11 mm;
Kwai Tsing 3 to 10 mm;
Wong Tai Sin 5 to 8 mm;
Eastern District 4 to 7 mm;
Kowloon City 4 to 7 mm;
Central & Western District 3 to 7 mm;
Sha Tin 3 to 7 mm;
Wan Chai 3 to 6 mm;
Sham Shui Po 4 to 6 mm;
Tuen Mun 0 to 5 mm;
Yau Tsim Mong 5 mm;
Southern District 0 to 4 mm;
Tai Po 0 to 4 mm;
Yuen Long 0 to 3 mm;
North District 0 to 1 mm.

Here is the information on Tropical Storm Podul at noon:
Location: 17.6 degrees north, 110.3 degrees east.


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

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Bulletin updated at 14:45 HKT 29/Aug/2019

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

The outer rainbands of Tropical Storm Podul are affecting the northern part of the South China Sea and the south China coast.

At noon, Podul was centred about 660 kilometres southwest of Hong Kong. It is forecast to move west at about 25 kilometres per hour across the seas south of Hainan Island.

Weather forecast for this afternoon and tonight

Mainly cloudy with occasional showers and a few squally thunderstorms. Moderate to fresh easterly winds, occasionally strong offshore at first. There will be swells.

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


(The above forecast period is valid up to 23:59 HKT today, 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 29/Aug/2019

STORM WARNING AREAS: PARACEL, TONKIN AND DANANG.

GENERAL SITUATION AT 282100 UTC:
FOR DETAILS ON TROPICAL STORM PODUL (1912), PLEASE REFER TO THE 3-HRLY SHIPPING WARNINGS.

MARINE FORECAST FOR 24 HOURS FROM 290100 UTC:

HONG KONG= E 5-6, OCNL 7. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 4 M. SWELL E 2-3 M. TEMP 32-27 C. =
KWANGTUNG= E TO SE 6-7. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 3-4 M. SWELL E TO NE 3-5 M. =
TAIWAN STRAIT= NE 5-6, BEC S 4-5. 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= 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. =
BALINTANG= 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. =
SCARBOROUGH= S TO SW 5-6. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 2-3 M. SWELL SW 3-5 M. =
PARACEL= CYCLONIC 8-9, BEC 10. DOWN TO 500 M IN FREQ HEAVY SQUALLY SHOWERS AND TS. SEA 6-8 M, BEC 10 M. SWELL SW 3-5 M. =
TONKIN= N TO NW 6-7, BEC 9-10 IN S. DOWN TO 500 M IN FREQ HEAVY SQUALLY SHOWERS AND TS. SEA 3-4 M, BEC 10 M. =
DANANG= N TO NW 6-7, BEC CYCLONIC 9-10. DOWN TO 500 M IN FREQ HEAVY SQUALLY SHOWERS AND TS. SEA 3-4 M, BEC 8-10 M. SWELL SW 3-5 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 12:30 HKT 29/Aug/2019

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 12:30 p.m. on 29 August 2019

    Warnings:
    Gale 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 noon, Tropical Storm Podul with maximum sustained winds of about 85 kilometres per hour near its centre was located at 17.6 degrees north, 110.3 degrees east.It is forecast to move west at about 25 kilometres per hour across the seas south of Hainan Island.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    East force 5 to 6, occasionally force 7.
    A few squally showers and thunderstorms.
    Moderate to rough seas.

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

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

    Shangchuan Dao:
    East force 6 to 7, force 8 to 9 in south.
    Frequent heavy squally showers and thunderstorms.
    High seas.

    Outlook for the next 48 hours
    Southeasterly winds of force 5 to 6. Scattered squally showers and thunderstorms.

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

    Waglan Island Wind east-northeast force 6
      Visibility 23 Kilometres

    Shantou Wind east-southeast force 2
      Visibility 30 Kilometres

    Huangmaozhou Wind east-southeast force 5

    Macau Wind east force 3
      Visibility 26 Kilometres

    Xisha Wind south-southwest force 6
      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/2019
    (Next update at 17:30 HKT 29/AUG/2019)
    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 :
     AT NOON., TROPICAL STORM PODUL WAS LOCATED AT
     17.6 DEGREES NORTH, 110.3 DEGREES EAST. IT IS
     FORECAST TO MOVE WEST AT ABOUT 14 KNOTS ACROSS
     THE SEAS SOUTH OF HAINAN ISLAND.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1300 TO 2300 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  090/15
                  TEMPO VRB/20G30 IN TS
       OFFSHORE:  090/20-25                            33-27
   B.   2000 FT:  090/20-25                            24
   C.   5000 FT:  110/30                               20
   D.  10000 FT:  110/25                               12
   E.  18000 FT:  110/25                               MS1
   F.  24000 FT:  100/25                               MS12
   G.  30000 FT:  060/30                               MS24
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      MAINLY CLOUDY. ISOLATED SQUALLY SHOWERS AND
      THUNDERSTORMS. SUNNY INTERVALS IN THE AFTERNOON.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 2000 FT SCT 4000 FT TEMPO FEW CB 1200 FT
      SCT 1200 FT BKN 5000 FT
   K. VISIBILITY    : 9 KM. TEMPO 4000 M IN SHOWERS. TEMPO 2000 IN TS
   L. 0 DEG. C LEVEL: 17500 FT      10 DEG. C LEVEL(S) : 12800 FT
   M. TURBULENCE    : MOD TO SEV.
   N. SEA STATE     : 3.0-4.0 M     SEA TEMPERATURE    : 25 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE TO FRESH EAST TO SOUTHEASTERLY WINDS,
     OCCASIONALLY STRONG OFFSHORE AT FIRST. MAINLY
     CLOUDY. ISOLATED SHOWERS AND 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 15:11 HKT on 29 Aug 19

    VHHK SIGMET 2 VALID 290710/291110 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N2034 E11130 - N2130 E11130 - N2400 E11730 - N2217 E11730 - N2034 E11130 TOP FL400 MOV W 15KT 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

    Tropical Cyclone Warning |  Track and Positions of Tropical Cyclones
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    Bulletin issued at 15:30 HKT 29/Aug/2019


    Tropical Cyclone Warning

    At 290600 UTC, Tropical Storm Podul (1912) with central pressure 988 hectopascals was centred within 90 nautical miles of one seven point five degrees north (17.5 N) one zero nine point eight degrees east (109.8 E) and is forecast to move west at about 12 knots for the next 24 hours.

    Maximum winds near the centre are estimated to be 45 knots.

    Radius of over 33 knot winds 90 nautical miles.
    Radius of over 2 metre waves 240 nautical miles.

    Forecast position and intensity at 300600 UTC
    One seven point seven degrees north (17.7 N)
    One zero four point eight degrees east (104.8 E)
    Maximum winds 30 knots.

    Forecast position and intensity at 310600 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 29/Aug/2019 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     33.8 C
Minimum Air Temperature                     27.2 C
Grass Minimum Temperature                   25.9 C
Relative Humidity                        64 - 88 Percent
Rainfall                                       0 mm 
Total rainfall since 1st January          1976.2 mm
Against an average of                     1878.0 mm

Other Stations                Min                  Max
King's Park                  26.7 C               34.3 C
Wong Chuk Hang               24.9 C               34.4 C
Ta Kwu Ling                  24.7 C               35.9 C
Lau Fau Shan                 25.6 C               34.1 C
Tai Po                       25.2 C               32.8 C
Sha Tin                      25.6 C               35.1 C
Tuen Mun                     25.7 C               34.5 C
Tseung Kwan O                24.6 C               34.6 C
Sai Kung                     26.2 C               34.2 C
Cheung Chau                  26.1 C               34.2 C
Chek Lap Kok                 27.2 C               34.4 C
Tsing Yi                     25.4 C               35.2 C
Shek Kong                    24.5 C               34.9 C
Tsuen Wan Ho Koon            24.0 C               32.1 C
Tsuen Wan Shing Mun Valley   24.0 C               35.2 C
Shau Kei Wan                 26.9 C               34.3 C
Kowloon City                 26.9 C               34.8 C
Happy Valley                 25.7 C               35.6 C
Wong Tai Sin                 25.8 C               35.8 C
Stanley                      25.5 C               35.3 C
Kwun Tong                    26.8 C               34.8 C
Sham Shui Po                 26.3 C               35.5 C
Kai Tak Runway Park          26.5 C               34.2 C
Yuen Long Park               25.1 C               36.2 C
Tai Mei Tuk               25.7 C               33.9 C

Duration of sunshine (King's Park):              10.2 H
The mean UV index recorded at King's Park yesterday was 5,
the UV intensity was Moderate.
The maximum UV index for yesterday was 10.
 

Yesterday's (28 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                         0.10
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                        0.14

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
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