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Bulletin issued at 15:02 HKT 10/Oct/2018

At 3 p.m. at the Hong Kong Observatory the air temperature was 24 degrees Celsius and the relative humidity 96 per cent.
During the past hour the mean UV Index recorded at King's Park was 0.5. The intensity of UV radiation was low.

Please be reminded that:

The Thunderstorm Warning has been issued. It will remain effective until 4:00 p.m. today. Isolated thunderstorms are expected to occur over Southern Waters and Islands of Hong Kong.

The air temperatures at other places were:

King's Park 23 degrees;
Wong Chuk Hang 23 degrees;
Ta Kwu Ling 24 degrees;
Lau Fau Shan 22 degrees;
Tai Po 23 degrees;
Sha Tin 23 degrees;
Tuen Mun 23 degrees;
Tseung Kwan O 24 degrees;
Sai Kung 23 degrees;
Cheung Chau 23 degrees;
Chek Lap Kok 24 degrees;
Tsing Yi 23 degrees;
Shek Kong 22 degrees;
Tsuen Wan Ho Koon 22 degrees;
Tsuen Wan Shing Mun Valley 23 degrees;
Hong Kong Park 23 degrees;
Shau Kei Wan 23 degrees;
Kowloon City 23 degrees;
Happy Valley 23 degrees;
Wong Tai Sin 23 degrees;
Stanley 25 degrees;
Kwun Tong 23 degrees;
Sham Shui Po 23 degrees;
Kai Tak Runway Park 23 degrees;
Yuen Long Park 22 degrees;
Tai Mei Tuk 23 degrees.

Between 1:45 and 2:45 p.m., lightning was detected within New Territories East, Hong Kong and Kowloon. The rainfall recorded in various regions were:

Wan Chai 33 to 45 mm;
Central & Western District 5 to 39 mm;
Islands District 0 to 39 mm;
Southern District 0 to 38 mm;
Sha Tin 9 to 25 mm;
Sai Kung 0 to 23 mm;
Kowloon City 6 to 23 mm;
Yau Tsim Mong 21 mm;
Eastern District 4 to 19 mm;
Tai Po 6 to 19 mm;
Kwun Tong 13 to 18 mm;
Kwai Tsing 5 to 18 mm;
Yuen Long 0 to 13 mm;
Sham Shui Po 6 to 11 mm;
Tsuen Wan 3 to 10 mm;
Wong Tai Sin 6 mm;
North District 0 to 2 mm;
Tuen Mun 0 to 1 mm.


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


Climatological Information for 10 Oct

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 10/Oct/2018

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

A cold front is moving across the coastal areas of Guangdong. The associated thundery showers are affecting the region. Locally, thundery showers in the afternoon brought more than 20 millimetres of rainfall to many places, and rainfall even exceeded 40 millimetres over the urban areas and Shek Kong.

Weather forecast for this afternoon and tonight

Cloudy and slightly cooler. There will be occasional showers and isolated thunderstorms. Moderate north to northeasterly winds.

Outlook : Slightly cooler with a few rain patches in the next couple of days.


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

GALE WARNING AREA: TAIWAN STRAIT.

GENERAL SITUATION AT 092100 UTC:
COLD FRONT 22N 106E 24N 113E 25N 116E S 10KT.

MARINE FORECAST FOR 24 HOURS FROM 100100 UTC:

HONG KONG= NE 3-4, BEC 5. ISOL SHOWERS AND TS. SEA BEC 2 M. TEMP 29-22 C. =
KWANGTUNG= NE 4-5, BEC 6. ISOL SHOWERS AND TS. SEA UP TO 2 M, BEC 3 M. =
TAIWAN STRAIT= NE 5-6, BEC 7-8. ISOL SHOWERS. SEA 2-3 M, BEC 4-6 M. =
BASHI= NE 4-5, BEC 6. ISOL SHOWERS. SEA UP TO 2 M, BEC 3 M. =
PRATAS= NE 4-5, BEC 6. ISOL SHOWERS. SEA UP TO 2 M, BEC 3 M. =
BALINTANG= NE 4-5, BEC 6. ISOL SHOWERS. SEA UP TO 2 M, BEC 3 M. =
SCARBOROUGH= NE 4-5. ISOL SHOWERS. SEA UP TO 2 M. =
PARACEL= NE 4-5, UP TO 6 LATER. ISOL SHOWERS AND TS. SEA UP TO 2 M, BEC 3 M. =
TONKIN= N TO NE 5-6. ISOL SHOWERS AND TS. SEA 2-3 M. =
DANANG= NE 4-5, BEC 6. ISOL SHOWERS AND TS. SEA UP TO 2 M, BEC 3 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
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    • 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 12:30 HKT 10/Oct/2018

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 12:30 p.m. on 10 October 2018

    Warnings:
    Strong winds in Nan'ao, Shanwei, south of Hong Kong and Shangchuan Dao.

    Weather Situation:
    A cold front over Guangdong is moving southwards gradually. It is expected to reach the south China coastal waters later today.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    Northeast force 3 to 4, becoming force 5.
    Isolated showers and thunderstorms.
    Slight to moderate seas.

    Nan'ao and Shanwei:
    Northeast force 5 to 6, becoming force 7.
    Moderate to rough seas.

    South of Hong Kong and Shangchuan Dao:
    Northeast force 4 to 5, becoming force 6.
    Isolated showers and thunderstorms.
    Moderate seas, becoming rough.

    Outlook for the next 48 hours
    Northeasterly winds of force 6 to 7. Isolated showers and thunderstorms.

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

    Waglan Island Wind east-northeast force 2
      Visibility 16 Kilometres

    Shantou Wind east-northeast force 2
      Visibility 28 Kilometres

    Dongsha Wind north-northeast force 3
      Visibility 10 Kilometres

    Huangmaozhou Wind east force 2

    Macau Wind east force 1
      Visibility 11 Kilometres

    Xisha Wind east-northeast force 2
      Visibility 26 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 14:00 HKT 10/OCT/2018
    (Next update at 17:30 HKT 10/OCT/2018)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     ISOL CUNIM/TS AND ASSOCIATED HAZARDS.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     A COLD FRONT IS MOVING ACROSS THE COASTAL AREAS
     OF GUANGDONG. THE ASSOCIATED THUNDERY SHOWERS
     ARE AFFECTING THE REGION.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1400 TO 2300 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  010/10-15
                  TEMPO VRB/15G25 IN TS
       OFFSHORE:  030/10-15                            26-24
   B.   2000 FT:  010/10-15                            20
   C.   5000 FT:  080/10                               15
   D.  10000 FT:  010/5                                8
   E.  18000 FT:  240/20                               MS4
   F.  24000 FT:  270/35                               MS15
   G.  30000 FT:  270/30                               MS28
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL
   I. WEATHER       : 
      CLOUDY WITH OCCASIONAL SHOWERS AND ISOLATED
      THUNDERSTORMS. LOCALISED MIST.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 2000 FT SCT 4000 FT TEMPO FEW CB 800 FT SCT
      1200 FT BKN 4000 FT
   K. VISIBILITY    : 7 KM. TEMPO 3000 M IN SHOWERS/MIST. TEMPO 2000 M IN TS
   L. 0 DEG. C LEVEL: 15500 FT      10 DEG. C LEVEL(S) : 8800 FT
   M. TURBULENCE    : MOD TO SEV NEAR CUNIM/TS
   N. SEA STATE     : 1.0-1.5 M     SEA TEMPERATURE    : 27 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE NORTH TO NORTHEASTERLY WINDS. MAINLY
     CLOUDY WITH A FEW 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 10:00 HKT on 02 Oct 18

    VHHK SIGMET 1 VALID 020200/020600 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N1800 E11506 - N1642 E11400 - N1754 E11254 - N1800 E11506 TOP FL400 MOV W 5KT 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/Oct/2018 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     29.3 C
Minimum Air Temperature                     25.1 C
Grass Minimum Temperature                   23.8 C
Relative Humidity                        69 - 89 Percent
Rainfall                                     0.6 mm 
Total rainfall since 1st January          1978.8 mm
Against an average of                     2270.3 mm

Other Stations                Min                  Max
King's Park                  24.3 C               29.0 C
Wong Chuk Hang               23.4 C               28.6 C
Ta Kwu Ling                  22.1 C               30.1 C
Lau Fau Shan                 22.8 C               30.0 C
Tai Po                       23.5 C               29.8 C
Sha Tin                      23.6 C               29.6 C
Tuen Mun                     23.7 C               29.7 C
Tseung Kwan O                22.8 C               28.4 C
Sai Kung                     24.5 C               28.3 C
Cheung Chau                  23.6 C               31.0 C
Chek Lap Kok                 24.9 C               30.4 C
Tsing Yi                     25.0 C               29.5 C
Shek Kong                    22.1 C               30.1 C
Tsuen Wan Ho Koon            22.1 C               28.4 C
Tsuen Wan Shing Mun Valley   22.5 C               29.4 C
Hong Kong Park               23.7 C               27.8 C
Shau Kei Wan                 23.0 C               27.7 C
Kowloon City                 24.0 C               29.4 C
Happy Valley                 24.3 C               29.5 C
Wong Tai Sin                 24.4 C               28.5 C
Stanley                      24.3 C               29.1 C
Kwun Tong                    24.3 C               28.8 C
Sham Shui Po                 24.4 C               29.9 C
Kai Tak Runway Park          24.2 C               28.1 C
Yuen Long Park               22.1 C               29.9 C
Tai Mei Tuk               24.1 C               31.2 C

Duration of sunshine (King's Park):              4.5 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 6.
 

Yesterday's (09 Oct 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                           0.12
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 Oct
     2003copy right image | Important notices | Privacy policy Last revision date: <10 Oct 2018> 

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