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Bulletin issued at 04:02 HKT 10/Sep/2018

At 4 a.m. at the Hong Kong Observatory the air temperature was 24 degrees Celsius and the relative humidity 89 per cent.

The air temperatures at other places were:

King's Park 24 degrees;
Wong Chuk Hang 24 degrees;
Ta Kwu Ling 25 degrees;
Lau Fau Shan 24 degrees;
Tai Po 25 degrees;
Sha Tin 25 degrees;
Tuen Mun 25 degrees;
Tseung Kwan O 23 degrees;
Sai Kung 25 degrees;
Cheung Chau 23 degrees;
Chek Lap Kok 26 degrees;
Tsing Yi 25 degrees;
Shek Kong 25 degrees;
Tsuen Wan Ho Koon 24 degrees;
Tsuen Wan Shing Mun Valley 24 degrees;
Hong Kong Park 23 degrees;
Shau Kei Wan 24 degrees;
Kowloon City 25 degrees;
Happy Valley 25 degrees;
Wong Tai Sin 25 degrees;
Stanley 25 degrees;
Kwun Tong 25 degrees;
Sham Shui Po 25 degrees;
Kai Tak Runway Park 26 degrees;
Yuen Long Park 25 degrees;
Tai Mei Tuk 24 degrees.


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


Climatological Information for 10 Sep

Regional Weather in Hong Kong

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Bulletin updated at 03:45 HKT 10/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 today

Mainly cloudy with a few showers. Sunny periods during the day. Temperatures will range between 24 and 31 degrees. Moderate to fresh east to northeasterly winds, occasionally strong 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 today, 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

    Current Weather | Local Weather Forecast | Regional Temperature Forecast in HK
    9-day Weather Forecast | UV Index Forecast | Weather Information for Fishermen

    Bulletin issued at 03:30 HKT 10/Sep/2018

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 3:30 a.m. on 10 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-northeast force 4
      Visibility 46 Kilometres

    Shantou Wind southwest force 1
      Visibility 30 Kilometres

    Huangmaozhou Wind east force 6

    Macau Wind east-northeast force 2
      Visibility 17 Kilometres

    Xisha Wind calm
      Visibility 30 Kilometres

  • Explanation of Seas or Sea Waves
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  • Visibility Readings in Hong Kong Waters
  • Map showing forecast areas
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    • WEATHER FORECAST FOR LOCAL AVIATION
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    Weather Forecast for Local Aviation

    Bulletin issued at 01:30 HKT 10/SEP/2018
    (Next update at 9:00-9:30 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 0200 TO 1200 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  060/10-15
       OFFSHORE:  080/15-20, OCNL 25                   25-31
   B.   2000 FT:  080/10-15, OCNL 20                   23
   C.   5000 FT:  060/10                               17
   D.  10000 FT:  340/10                               10
   E.  18000 FT:  040/10                               MS3
   F.  24000 FT:  020/10                               MS12
   G.  30000 FT:  060/15                               MS25
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      MAINLY CLOUDY WITH A FEW SHOWERS. SUNNY PERIODS DURING
      THE DAY.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 2000 FT  SCT 4000 FT.
   K. VISIBILITY    : 9 KM. TEMPO 4000 M IN SHOWERS.
   L. 0 DEG. C LEVEL: 16500 FT      10 DEG. C LEVEL(S) : 10000 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 NORTHEASTERLY WINDS, OCCASIONALLY FRESH OFFSHORE.
     SUNNY PERIODS. A FEW 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 03:50 HKT on 10 Sep 18

    VHHK SIGMET 4 VALID 091550/091950 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N2030 E11130 - N1930 E11130 - N1800 E11506 - N2000 E11642 - N2030 E11500 - N2030 E11130 TOP FL400 MOV SW 05KT NC= VHHK SIGMET 5 VALID 091950/092350 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N2112 E11130 - N1930 E11130 - N1830 E11218 - N1830 E11430 - N2000 E11530 - N2130 E11330 - N2112 E11130 TOP FL420 MOV SW 05KT 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 10/Sep/2018 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     30.5 C
Minimum Air Temperature                     24.6 C
Grass Minimum Temperature                   24.7 C
Relative Humidity                        64 - 96 Percent
Rainfall                                    16.7 mm 
Total rainfall since 1st January          1673.5 mm
Against an average of                     2010.5 mm

Other Stations                Min                  Max
King's Park                  24.0 C               29.4 C
Wong Chuk Hang               24.1 C               30.0 C
Ta Kwu Ling                  23.6 C               30.8 C
Lau Fau Shan                 24.1 C               30.4 C
Tai Po                       24.9 C               28.8 C
Sha Tin                      24.8 C               30.4 C
Tuen Mun                     25.4 C               30.7 C
Tseung Kwan O                23.6 C               30.5 C
Sai Kung                     24.5 C               29.3 C
Cheung Chau                  23.9 C               28.4 C
Chek Lap Kok                 26.3 C               30.4 C
Tsing Yi                     24.6 C               30.8 C
Shek Kong                    24.5 C               31.2 C
Tsuen Wan Ho Koon            23.1 C               28.4 C
Tsuen Wan Shing Mun Valley   24.4 C               30.2 C
Hong Kong Park               23.9 C               29.8 C
Shau Kei Wan                 23.8 C               29.6 C
Kowloon City                 24.2 C               30.8 C
Happy Valley                 24.5 C               30.8 C
Wong Tai Sin                 24.4 C               31.8 C
Stanley                      24.5 C               29.4 C
Kwun Tong                    24.2 C               30.5 C
Sham Shui Po                 24.9 C               31.1 C
Kai Tak Runway Park          24.6 C               29.4 C
Yuen Long Park               25.1 C               31.7 C
Tai Mei Tuk               24.4 C               29.9 C

Duration of sunshine (King's Park):              1.7 H
The mean UV index recorded at King's Park yesterday was 3,
the UV intensity was Moderate.
The maximum UV index for yesterday was 9.
 

Yesterday's (09 Sep 2018) average ambient gamma radiation
dose rate taken outdoors in Hong Kong ranged from 0.09 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                           0.10
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                         0.14
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 09 Sep
     2003copy right image | Important notices | Privacy policy Last revision date: <10 Sep 2018> 

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