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Bulletin issued at 21:02 HKT 29/Sep/2018

At 9 p.m. at the Hong Kong Observatory the air temperature was 28 degrees Celsius and the relative humidity 55 per cent.

Please be reminded that:

The Fire Danger Warning is Red and the fire risk is extreme.

The air temperatures at other places were:

King's Park 28 degrees;
Wong Chuk Hang 27 degrees;
Ta Kwu Ling 25 degrees;
Lau Fau Shan 27 degrees;
Tai Po 27 degrees;
Sha Tin 28 degrees;
Tuen Mun 28 degrees;
Tseung Kwan O 26 degrees;
Sai Kung 28 degrees;
Cheung Chau 25 degrees;
Chek Lap Kok 29 degrees;
Tsing Yi 28 degrees;
Shek Kong 26 degrees;
Tsuen Wan Ho Koon 26 degrees;
Tsuen Wan Shing Mun Valley 27 degrees;
Hong Kong Park 27 degrees;
Shau Kei Wan 28 degrees;
Kowloon City 27 degrees;
Happy Valley 28 degrees;
Wong Tai Sin 28 degrees;
Stanley 28 degrees;
Kwun Tong 27 degrees;
Sham Shui Po 28 degrees;
Kai Tak Runway Park 28 degrees;
Yuen Long Park 27 degrees;
Tai Mei Tuk 27 degrees.


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


Climatological Information for 29 Sep

Regional Weather in Hong Kong

Information on Tropical Cyclones

Hong Kong Climatology


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Bulletin updated at 20:45 HKT 29/Sep/2018

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

The northeast monsoon is affecting southern China.

At 8 p.m., Severe Typhoon Trami was centred about 180 kilometres north-northeast of Okinawa. It is forecast to move northeast at about 40 kilometres per hour across the vicinity of the Ryukyu Islands.

Weather forecast for tonight and tomorrow

Mainly fine and dry. The minimum temperature will be about 24 degrees overnight. The maximum temperature will be about 31 degrees tomorrow. Moderate north to northeasterly winds.

Outlook : Mainly fine in the following couple of days. Isolated showers in the morning on National Day holiday.


(The above forecast period is valid up to 23:59 HKT tomorrow, 30/09/2018; 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 29/Sep/2018

N0 WARNING.

GENERAL SITUATION AT 290900 UTC:
SEVERE TYPHOON TRAMI (1824) 950 HPA 27N 128E NE 22KT INTST NC.

MARINE FORECAST FOR 24 HOURS FROM 291300 UTC:

HONG KONG= N TO NE 4-5. FINE. SEA UP TO 2 M. SWELL E UP TO 2 M. TEMP 24-31 C. =
KWANGTUNG= N TO NE 5-6. FINE. SEA 2-3 M. SWELL E TO NE 2-3 M. =
TAIWAN STRAIT= N TO NE 6-7. FINE. SEA 3-4 M. SWELL NE 3-5 M. =
BASHI= N TO NE 6-7. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 3-4 M. SWELL NE 3-5 M. =
PRATAS= N TO NE 5-6. ISOL SHOWERS. SEA 2-3 M. SWELL NE 3 M. =
BALINTANG= N TO NE 6-7. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 3-4 M. SWELL NE 3-5 M. =
SCARBOROUGH= N 5-6. ISOL SHOWERS AND TS. SEA 2-3 M. SWELL NE 2-3 M. =
PARACEL= N TO NE 4-5. ISOL SHOWERS AND TS. SEA UP TO 2 M. SWELL E TO NE 2-3 M. =
TONKIN= N TO NE 4-5, OCNL 6. ISOL SHOWERS AND TS. SEA UP TO 3 M. =
DANANG= N TO NE 4-5. ISOL SHOWERS AND TS. SEA UP TO 2 M. SWELL E 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 19:30 HKT 29/Sep/2018

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 7:30 p.m. on 29 September 2018

    Warnings:
    Strong winds in Nan'ao and Shanwei.

    Weather Situation:
    The northeast monsoon is affecting the south China coastal waters.

    At 7 p.m., Severe Typhoon Trami with maximum sustained winds of about 155 kilometres per hour near its centre was located near 27.6 degrees north, 128.2 degrees east. It is forecast to move northeast at about 40 kilometres per hour across the vicinity of the Ryukyu Islands.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    North to northeast force 4 to 5.
    Moderate seas.

    Nan'ao and Shanwei:
    North to northeast force 5 to 6.
    Moderate to rough seas.

    South of Hong Kong and Shangchuan Dao:
    North to northeast force 5.
    Moderate seas.

    Outlook for the next 48 hours
    East to northeasterly winds of force 5 to 6, occasionally force 7 . Isolated showers and thunderstorms.

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

    Waglan Island Wind north force 3
      Visibility 31 Kilometres

    Shantou Wind east-southeast force 1
      Visibility 30 Kilometres

    Dongsha Wind north force 3
      Visibility 10 Kilometres

    Huangmaozhou Wind north-northwest force 4

    Macau Wind north force 3
      Visibility 16 Kilometres

    Xisha Wind north-northeast force 2
      Visibility 14 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 17:30 HKT 29/SEP/2018
    (Next update at 01:30 HKT 30/SEP/2018)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     NIL
II.  SYNOPSIS OF THE WEATHER SITUATION :
     THE NORTHEAST MONSOON IS AFFECTING THE SOUTH
     CHINA COASTAL AREAS.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1800 TO 0400 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  360/10-15                            30-24
   B.   2000 FT:  360/15-20                            21
   C.   5000 FT:  030/10                               16
   D.  10000 FT:  030/10                               12
   E.  18000 FT:  010/10                               MS3
   F.  24000 FT:  310/10                               MS14
   G.  30000 FT:  360/10                               MS28
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      MAINLY FINE.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 3500 FT.
   K. VISIBILITY    : 10 KM.
   L. 0 DEG. C LEVEL: 17500 FT      10 DEG. C LEVEL(S) : 11600 FT
   M. TURBULENCE    : MOD TO SEV NEAR HILLS
   N. SEA STATE     : 1.0-1.5 M     SEA TEMPERATURE    : 27 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE NORTH TO NORTHEASTERLY WINDS. MAINLY
     FINE.=

    ===================================================================
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 09:35 HKT on 25 Sep 18

    VHHK SIGMET 1 VALID 250140/250540 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N2018 E11330 - N1930 E11136 - N1936 E11130 - N2130 E11130 - N2224 E11342 - N2018 E11330 TOP FL400 STNR NC= VHHK SIGMET 3 VALID 242140/250140 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N2036 E11130 - N2130 E11130 - N2212 E11306 - N1836 E11518 - N1748 E11436 - N2036 E11130 TOP FL400 MOV SW 10KT 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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     2003copy right image | Important notices | Privacy policy Last revision date: <29 Sep 2018> 
    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 29/Sep/2018 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     31.3 C
Minimum Air Temperature                     25.8 C
Grass Minimum Temperature                   24.5 C
Relative Humidity                        57 - 84 Percent
Rainfall                                       0 mm 
Total rainfall since 1st January          1973.3 mm
Against an average of                     2216.3 mm

Other Stations                Min                  Max
King's Park                  25.1 C               30.4 C
Wong Chuk Hang               24.6 C               31.0 C
Ta Kwu Ling                  22.9 C               30.5 C
Lau Fau Shan                 23.8 C               28.9 C
Tai Po                       24.1 C               31.1 C
Sha Tin                      25.2 C               30.6 C
Tuen Mun                     24.0 C               30.5 C
Tseung Kwan O                23.9 C               31.7 C
Sai Kung                     25.7 C               29.8 C
Cheung Chau                  23.8 C               32.6 C
Chek Lap Kok                 25.6 C               29.9 C
Tsing Yi                     24.6 C               30.8 C
Shek Kong                    23.9 C               31.6 C
Tsuen Wan Ho Koon            23.1 C               29.5 C
Tsuen Wan Shing Mun Valley   23.7 C               31.3 C
Hong Kong Park               25.2 C               30.7 C
Shau Kei Wan                 25.1 C               32.0 C
Kowloon City                 24.9 C               30.9 C
Happy Valley                 25.5 C               32.1 C
Wong Tai Sin                 25.4 C               31.1 C
Stanley                      25.1 C               30.8 C
Kwun Tong                    24.7 C               31.0 C
Sham Shui Po                 25.3 C               31.0 C
Kai Tak Runway Park          25.4 C               30.9 C
Yuen Long Park               24.4 C               31.3 C
Tai Mei Tuk               24.1 C               31.5 C

Duration of sunshine (King's Park):              5.9 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 7.
 

Yesterday's (28 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                           0.09
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                         0.14
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 28 Sep
     2003copy right image | Important notices | Privacy policy Last revision date: <29 Sep 2018> 

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