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Bulletin issued at 21:02 HKT 09/Sep/2018

At 9 p.m. at the Hong Kong Observatory the air temperature was 27 degrees Celsius and the relative humidity 82 per cent.

The air temperatures at other places were:

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

Between 7:45 and 8:45 p.m., the rainfall recorded in various regions were:

Sai Kung 0 to 10 mm;
Kwun Tong 0 to 6 mm;
Southern District 0 to 3 mm;
Eastern District 0 to 1 mm.


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


Climatological Information for 9 Sep

Regional Weather in Hong Kong

Information on Tropical Cyclones

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Bulletin updated at 21:15 HKT 09/Sep/2018

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

The northeast monsoon is affecting Guangdong. Besides, an area of low pressure is bringing unsettled weather to the Luzon Strait.

Weather forecast for tonight and tomorrow

Mainly cloudy with a few showers. Sunny periods during the day tomorrow. Temperatures will range between 26 and 31 degrees. Moderate east to northeasterly winds, fresh offshore at first.

Outlook : Sunny periods in the following couple of days. More showery midweek this week.


(The above forecast period is valid up to 23:59 HKT tomorrow, 10/09/2018; 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 21:00 HKT 09/Sep/2018

GALE WARNING AREA: TAIWAN STRAIT.

GENERAL SITUATION AT 090900 UTC:
THE NORTHEAST MONSOON IS AFFECTING THE FORECAST AREAS. LOW 1004HPA 22N 123E SLOW MOVING INTST NC.

MARINE FORECAST FOR 24 HOURS FROM 091300 UTC:

HONG KONG= E TO NE 4-5, OCNL 6. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 2 M, UP TO 3 M. SWELL NE UP TO 2 M. TEMP 26-31 C. =
KWANGTUNG= NE 5-6, 7 IN E. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 2-3 M, 4 M IN E. SWELL NE 2 M. =
TAIWAN STRAIT= N TO NE 7-8. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 4-6 M. SWELL N TO NE 2-3 M. =
BASHI= N TO NE 5-6, OCNL 7. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA UP TO 4 M. SWELL N TO NE 2-3 M. =
PRATAS= N TO NE 5-6, OCNL 7. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 4 M. SWELL NE 2 M. =
BALINTANG= N TO NW 4-5, OCNL 6. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA UP TO 3 M. SWELL NE 2 M. =
SCARBOROUGH= N TO NE 4-5. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 2 M. SWELL NE UP TO 2 M. =
PARACEL= NE 5-6. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 2-3 M. SWELL NE 2 M. =
TONKIN= NE 5-6. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 2-3 M. SWELL NE UP TO 2 M. =
DANANG= NE 5-6. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 2-3 M. SWELL NE 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 19:30 HKT 09/Sep/2018

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 7:30 p.m. on 09 September 2018

    Warnings:
    Strong winds in all areas.

    Weather Situation:
    The northeast monsoon is affecting the south China coastal waters. Besides, an area of low pressure is bringing unsettled weather to the Luzon Strait.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    East to northeast force 4 to 5, occasionally force 6.
    Isolated squally showers and thunderstorms.
    Moderate to rough seas.

    Nan'ao and Shanwei:
    Northeast force 6 to 7.
    Isolated squally showers and thunderstorms.
    Rough seas.

    South of Hong Kong and Shangchuan Dao:
    Northeast force 5 to 6.
    Isolated squally showers and thunderstorms.
    Moderate to rough seas.

    Outlook for the next 48 hours
    North to northeasterly winds of force 6 to 7. Scattered squally showers and thunderstorms.

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

    Waglan Island Wind east force 4
      Visibility 16 Kilometres

    Shantou Wind northeast force 2
      Visibility 30 Kilometres

    Dongsha Wind north-northeast force 4
      Visibility 9 Kilometres in rain

    Huangmaozhou Wind east force 5

    Macau Wind northeast force 1
      Visibility 11 Kilometres

    Xisha Wind west-northwest force 2
      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 17:30 HKT 09/SEP/2018
    (Next update at 01:30 HKT 10/SEP/2018)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     STRONG WINDS AND SEV TURB.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     THE NORTHEAST MONSOON IS AFFECTING GUANGDONG.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1800 TO 0400 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  080/10, OCNL 15
       OFFSHORE:  080/15-20, OCNL 25                   29-25
   B.   2000 FT:  070/15, OCNL 20                      23
   C.   5000 FT:  070/10                               17
   D.  10000 FT:  330/10                               11
   E.  18000 FT:  070/10                               MS3
   F.  24000 FT:  060/15                               MS13
   G.  30000 FT:  050/10                               MS27
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      2600 - 2900 FT.
   I. WEATHER       : 
      MAINLY CLOUDY WITH A FEW SHOWERS.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 3000 FT  SCT 6000 FT.
   K. VISIBILITY    : 9 KM.  TEMPO 4000 M IN SHOWERS.
   L. 0 DEG. C LEVEL: 16500 FT      10 DEG. C LEVEL(S) : 10400 FT
   M. TURBULENCE    : MOD TO SEV OFFSHORE.  MOD NEAR HILLS.
   N. SEA STATE     : 2.0-2.5 M     SEA TEMPERATURE    : 26 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE TO FRESH EAST TO NORTHEASTERLY WINDS,
     OCCASIONALLY STRONG OFFSHORE.  SUNNY PERIODS AND
     ONE OR TWO 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 19:45 HKT on 09 Sep 18

    VHHK SIGMET 3 VALID 091150/091550 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N2100 E11730 - N1948 E11630 - N1948 E11242 - N2100 E11230 - N2100 E11436 - N2154 E11730 - N2100 E11730 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

    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 09/Sep/2018 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     29.6 C
Minimum Air Temperature                     25.6 C
Grass Minimum Temperature                   25.7 C
Relative Humidity                        69 - 96 Percent
Rainfall                                    24.6 mm 
Total rainfall since 1st January          1656.8 mm
Against an average of                     1996.6 mm

Other Stations                Min                  Max
King's Park                  25.2 C               29.8 C
Wong Chuk Hang               24.5 C               30.0 C
Ta Kwu Ling                  25.5 C               29.9 C
Lau Fau Shan                 24.7 C               27.7 C
Tai Po                       26.2 C               29.3 C
Sha Tin                      25.7 C               30.1 C
Tuen Mun                     26.3 C               29.7 C
Tseung Kwan O                24.2 C               31.0 C
Sai Kung                     26.6 C               29.8 C
Cheung Chau                  25.5 C               29.3 C
Chek Lap Kok                 26.1 C               30.9 C
Tsing Yi                     25.6 C               30.4 C
Shek Kong                    26.4 C               30.5 C
Tsuen Wan Ho Koon            24.9 C               28.4 C
Tsuen Wan Shing Mun Valley   26.0 C               30.2 C
Hong Kong Park               24.3 C               30.4 C
Shau Kei Wan                 24.6 C               31.1 C
Kowloon City                 25.5 C               30.3 C
Happy Valley                 24.9 C               31.1 C
Wong Tai Sin                 26.6 C               31.2 C
Stanley                      25.0 C               30.3 C
Kwun Tong                    25.7 C               31.0 C
Sham Shui Po                 25.5 C               30.7 C
Kai Tak Runway Park          24.5 C               31.1 C
Yuen Long Park               26.3 C               30.7 C
Tai Mei Tuk               25.7 C               31.0 C

Duration of sunshine (King's Park):              2.7 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 4.
 

Yesterday's (08 Sep 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                           0.09
Tap Mun                             0.09
Kat O                               0.10
Yuen Ng Fan                         0.12
Tai Mei Tuk                         0.12
Sha Tau Kok                         0.10
Kwun Tong                           0.13
Sai Wan Ho                          0.09
King's Park                         0.15
Tsim Bei Tsui                       0.13
Cape D'Aguilar                      0.13
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 08 Sep
     2003copy right image | Important notices | Privacy policy Last revision date: <09 Sep 2018> 

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