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Bulletin issued at 03:02 HKT 07/Sep/2019

At 3 a.m. at the Hong Kong Observatory the air temperature was 28 degrees Celsius and the relative humidity 88 per cent.

The air temperatures at other places were:

King's Park 28 degrees;
Wong Chuk Hang 26 degrees;
Ta Kwu Ling 26 degrees;
Lau Fau Shan 26 degrees;
Tai Po 26 degrees;
Sha Tin 26 degrees;
Tuen Mun 27 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 26 degrees;
Tsuen Wan Ho Koon 25 degrees;
Tsuen Wan Shing Mun Valley 25 degrees;
Shau Kei Wan 27 degrees;
Kowloon City 28 degrees;
Happy Valley 27 degrees;
Wong Tai Sin 27 degrees;
Stanley 26 degrees;
Kwun Tong 27 degrees;
Sham Shui Po 27 degrees;
Kai Tak Runway Park 27 degrees;
Yuen Long Park 26 degrees;
Tai Mei Tuk 27 degrees.


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


Climatological Information for 7 Sep

Regional Weather in Hong Kong

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Hong Kong Climatology


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Bulletin updated at 02:45 HKT 07/Sep/2019

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

A continental airstream is bringing mainly fine weather to Guangdong.

At 2 a.m., Severe Typhoon Lingling was centred about 140 kilometres west of Jeju. It is forecast to move north at about 38 kilometres per hour towards the vicinity of the Korean Peninsula.

Weather forecast for today

Mainly fine apart from isolated showers. The minimum temperature will be about 27 degrees. Hot during the day with a maximum temperature of around 32 degrees in the urban areas, and a couple of degrees higher in the New Territories. Light to moderate east to northeasterly winds.

Outlook : Mainly fine and hot apart from isolated showers early next week.


(The above forecast period is valid up to 23:59 HKT today, 07/09/2019; 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 06/Sep/2019

N0 WARNING.

GENERAL SITUATION AT 060900 UTC:
LOW 1000 HPA 19N 113E QSTNR INTST NC.

MARINE FORECAST FOR 24 HOURS FROM 061300 UTC:

HONG KONG= E TO NE 4-5. ISOL SHOWERS. SEA UP TO 2 M. SWELL SW 2 M. TEMP 27-32 C. =
KWANGTUNG= E TO NE 4-5. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 2 M. SWELL SW 2-3 M, SE 2 M. =
TAIWAN STRAIT= S TO SW 4-5. ISOL SHOWERS AND TS. SEA UP TO 2 M. SWELL NE 3-5 M, SE 2 M. =
BASHI= SW 6-7. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 3-4 M. SWELL SW 3 M, SE 2 M. =
PRATAS= S TO SW 5-6. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 2-3 M. SWELL SW 3 M, SE 2M. =
BALINTANG= SW 6-7. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 3-4 M. SWELL SW 3 M. =
SCARBOROUGH= SW 5-6, OCNL 7. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA UP TO 4 M. SWELL SW 3 M. =
PARACEL= W TO SW 5-6. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 2-3 M. SWELL SW 3 M, SE 2 M. =
TONKIN= N TO NW 4-5. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 2 M. =
DANANG= W TO NW 4-5. 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.


  • Map showing the 10 forecast areas
  • Tidal Information

    • SOUTH CHINA COASTAL WATERS
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    South China Coastal Waters

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    Bulletin issued at 03:30 HKT 07/Sep/2019

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 3:30 a.m. on 07 September 2019

    Weather Situation:
    The broad trough of low pressure over the northern part of the South China Sea is bringing unsettled weather to the south China coastal waters.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    East to northeast force 4 to 5.
    Isolated showers and thunderstorms.
    Moderate seas.

    Nan'ao:
    East to southeast force 4 to 5.
    Isolated squally showers and thunderstorms.
    Moderate seas.

    Shanwei, South of Hong Kong and Shangchuan Dao:
    East to northeast force 4 to 5.
    Isolated squally showers and thunderstorms.
    Moderate seas.

    Outlook for the next 48 hours
    East to northeasterly winds of force 4 to 5, becoming south to southwesterly winds of force 4 to 5. Isolated showers and thunderstorms.

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

    Waglan Island Wind north-northeast force 2
      Visibility 21 Kilometres

    Shantou Wind west-northwest force 1
      Visibility 8 Kilometres

    Dongsha Wind south force 2
      Visibility 10 Kilometres

    Huangmaozhou Wind northeast force 2

    Macau Wind east-southeast force 1
      Visibility 45 Kilometres

    Xisha Wind west-southwest force 3
      Visibility 17 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 07/SEP/2019
    (Next update at 9:00-9:30 HKT 07/SEP/2019)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     NIL
II.  SYNOPSIS OF THE WEATHER SITUATION :
     THE BROAD TROUGH OF LOW PRESSURE OVER THE
     NORTHERN PART OF THE SOUTH CHINA SEA IS BRINGING
     UNSETTLED WEATHER TO THE SOUTH CHINA COASTAL
     AREAS.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 0200 TO 1200 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  340/5-10
       OFFSHORE:  070/10-15                            32-27
   B.   2000 FT:  070/10-15                            23
   C.   5000 FT:  040/10-15                            20
   D.  10000 FT:  040/10                               12
   E.  18000 FT:  300/15                               MS2
   F.  24000 FT:  290/20                               MS15
   G.  30000 FT:  270/20                               MS26
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL
   I. WEATHER       : 
      MAINLY FINE WITH ISOLATED SHOWERS.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 2000 FT TEMPO FEW CB 1000 FT SCT 2000 FT
   K. VISIBILITY    : 9 KM. TEMPO 4000 M IN SHOWERS.
   L. 0 DEG. C LEVEL: 16500 FT      10 DEG. C LEVEL(S) : 1100 FT
   M. TURBULENCE    : MOD NEAR HILLS
   N. SEA STATE     : 1.0-1.5 M     SEA TEMPERATURE    : 27 DEG
IV.  FURTHER OUTLOOK: 
     LIGHT TO MODERATE NORTHWESTERLY WINDS. MAINLY
     FINE WITH ISOLATED 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 03:33 HKT on 07 Sep 19

    VHHK SIGMET 4 VALID 061935/062335 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N1959 E11641 - N1755 E11459 - N1830 E11346 - N2030 E11351 - N1959 E11641 TOP FL400 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

    Tropical Cyclone Warning |  Track and Positions of Tropical Cyclones
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    Severe Weather Information Centre

    Bulletin issued at 15:30 HKT 06/Sep/2019


    Tropical Cyclone Warning

    At 060600 UTC, Super Typhoon Lingling (1913) with central pressure 930 hectopascals was centred within 30 nautical miles of two nine point six degrees north (29.6 N) one two five point two degrees east (125.2 E) and is forecast to move north at about 20 knots for the next 24 hours.

    Maximum winds near the centre are estimated to be 100 knots.

    Radius of over 33 knot winds 180 nautical miles.
    Radius of over 47 knot winds 90 nautical miles.
    Radius of over 63 knot winds 60 nautical miles.
    Radius of over 2 metre waves 240 nautical miles.

    No further warnings on this Super Typhoon will be issued by the Hong Kong Observatory unless it re-enters the Hong Kong area of responsibility.

    Forecast position and intensity at 070600 UTC
    Three seven point six degrees north (37.6 N)
    One two four point five degrees east (124.5 E)
    Maximum winds 80 knots.

    Forecast position and intensity at 080600 UTC
    Become extratropical low.



    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 07/Sep/2019 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     32.4 C
Minimum Air Temperature                     26.8 C
Grass Minimum Temperature                   26.2 C
Relative Humidity                        63 - 92 Percent
Rainfall                                     0.2 mm 
Total rainfall since 1st January          2188.3 mm
Against an average of                     1971.8 mm

Other Stations                Min                  Max
King's Park                  26.4 C               32.0 C
Wong Chuk Hang               25.8 C               32.0 C
Ta Kwu Ling                  24.8 C               33.8 C
Lau Fau Shan                 24.7 C               33.4 C
Tai Po                       25.0 C               31.1 C
Sha Tin                      25.7 C               32.4 C
Tuen Mun                     26.0 C               31.9 C
Tseung Kwan O                25.1 C               31.6 C
Sai Kung                     25.9 C               31.8 C
Cheung Chau                  25.2 C               31.3 C
Chek Lap Kok                 27.0 C               34.0 C
Tsing Yi                     26.1 C               33.5 C
Shek Kong                    24.8 C               33.7 C
Tsuen Wan Ho Koon            24.1 C               31.6 C
Tsuen Wan Shing Mun Valley   25.0 C               33.2 C
Shau Kei Wan                 25.5 C               30.8 C
Kowloon City                 26.1 C               33.1 C
Happy Valley                 25.8 C               34.1 C
Wong Tai Sin                 26.2 C               32.3 C
Stanley                      25.8 C               31.6 C
Kwun Tong                    25.9 C               31.3 C
Sham Shui Po                 26.0 C               33.6 C
Kai Tak Runway Park          26.6 C               31.3 C
Yuen Long Park               24.8 C               34.5 C
Tai Mei Tuk               25.8 C               33.0 C

Duration of sunshine (King's Park):              9.5 H
The mean UV index recorded at King's Park yesterday was 6,
the UV intensity was High.
The maximum UV index for yesterday was 11.
 

Yesterday's (06 Sep 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                        0.14

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 06 Sep
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