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Bulletin issued at 16:02 HKT 17/Oct/2018

At 4 p.m. at the Hong Kong Observatory the air temperature was 23 degrees Celsius and the relative humidity 90 per cent.
During the past hour the mean UV Index recorded at King's Park was 0.4. The intensity of UV radiation was low.

The air temperatures at other places were:

King's Park 23 degrees;
Wong Chuk Hang 24 degrees;
Ta Kwu Ling 21 degrees;
Lau Fau Shan 21 degrees;
Tai Po 21 degrees;
Sha Tin 21 degrees;
Tuen Mun 21 degrees;
Tseung Kwan O 22 degrees;
Sai Kung 21 degrees;
Cheung Chau 22 degrees;
Chek Lap Kok 22 degrees;
Tsing Yi 23 degrees;
Shek Kong 21 degrees;
Tsuen Wan Ho Koon 20 degrees;
Tsuen Wan Shing Mun Valley 21 degrees;
Hong Kong Park 23 degrees;
Shau Kei Wan 23 degrees;
Kowloon City 22 degrees;
Happy Valley 25 degrees;
Wong Tai Sin 22 degrees;
Stanley 24 degrees;
Kwun Tong 23 degrees;
Sham Shui Po 21 degrees;
Kai Tak Runway Park 24 degrees;
Yuen Long Park 21 degrees;
Tai Mei Tuk 21 degrees.

Between 2:45 and 3:45 p.m., the rainfall recorded in various regions were:

Tai Po 0 to 2 mm;
Tsuen Wan 0 to 2 mm;
Tuen Mun 1 to 2 mm;
Yuen Long 0 to 2 mm;
Sha Tin 0 to 1 mm;
North District 0 to 1 mm;
Sai Kung 0 to 1 mm;
Wong Tai Sin 0 to 1 mm.


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


Climatological Information for 17 Oct

Regional Weather in Hong Kong

Information on Tropical Cyclones

Hong Kong Climatology


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Bulletin updated at 16:15 HKT 17/Oct/2018

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

The northeast monsoon is affecting the south China coast. Meanwhile, a broad band of clouds is bringing rainy weather to the region.

Weather forecast for tonight and tomorrow

Cloudy with a few rain patches. Slightly cooler with temperatures ranging between 22 and 25 degrees. Moderate northerly winds. Becoming east to northeasterlies with winds strengthening gradually tomorrow.

Outlook : Windy and there will still be a few rain patches on Friday. The weather will improve during the weekend.


(The above forecast period is valid up to 23:59 HKT tomorrow, 18/10/2018; 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 17/Oct/2018

GALE WARNING AREA: TAIWAN STRAIT.

GENERAL SITUATION AT 162100 UTC:
THE NORTHEAST MONSOON IS AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 170100 UTC:

HONG KONG= NE 5-6. ISOL SHOWERS AND TS. SEA 2-3 M. SWELL E TO NE 2 M. TEMP 26-22 C. =
KWANGTUNG= E TO NE 6-7. ISOL SHOWERS AND TS. SEA 3-4 M. SWELL E TO NE 3 M. =
TAIWAN STRAIT= NE 6-7, OCNL 8. ISOL SHOWERS AND TS. SEA UP TO 6 M. SWELL NE 3 M. =
BASHI= E TO NE 5-6. ISOL SHOWERS. SEA 2-3 M. SWELL NE 3 M. =
PRATAS= E TO NE 5-6. ISOL SHOWERS AND TS. SEA 2-3 M. SWELL NE 3 M. =
BALINTANG= E TO NE 5-6. ISOL SHOWERS. SEA 2-3 M. SWELL NE 3 M. =
SCARBOROUGH= NE 4-5. ISOL SHOWERS AND TS. SEA UP TO 2 M. SWELL NE 2 M. =
PARACEL= E TO NE 4-5, OCNL 6. ISOL SHOWERS AND TS. SEA UP TO 3 M. SWELL E TO NE 2 M. =
TONKIN= NE 5-6. ISOL SHOWERS AND TS. SEA 2-3 M. SWELL NE UP TO 2 M. =
DANANG= E TO NE 4-5. ISOL SHOWERS AND TS. SEA UP TO 2 M. SWELL E TO 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 16:30 HKT 17/Oct/2018

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 4:30 p.m. on 17 October 2018

    Warnings:
    Strong winds in all areas.

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

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    North force 5 to 6, east to northeast up to force 7 tomorrow.
    Isolated squally showers and thunderstorms.
    Moderate to rough seas.

    Nan'ao and Shanwei:
    North force 6 to 7, east to northeast force 7 tomorrow.
    Isolated squally showers and thunderstorms.
    Rough seas.

    South of Hong Kong and Shangchuan Dao:
    North force 5 to 6, east to northeast up to force 7 tomorrow.
    Isolated squally showers and thunderstorms.
    Moderate to rough seas.

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

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

    Waglan Island Wind north-northeast force 4
      Visibility 48 Kilometres

    Shantou Wind east-northeast force 2
      Visibility 5000 Metres in rain

    Dongsha Wind northeast force 1
      Visibility 10 Kilometres

    Huangmaozhou Wind north-northwest force 3

    Macau Wind north force 3
      Visibility 14 Kilometres

    Xisha Wind east force 2
      Visibility 30 Kilometres

  • Explanation of Seas or Sea Waves
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  • 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 12:30 HKT 17/OCT/2018
    (Next update at 17:30 HKT 17/OCT/2018)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     NIL.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     THE NORTHEAST MONSOON IS AFFECTING GUANGDONG.
     MEANWHILE, A BROAD BAND OF CLOUDS IS BRINGING A
     FEW RAIN PATCHES TO THE REGION.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1300 TO 2300 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  020/10
       OFFSHORE:  020/15-20                            25-23
   B.   2000 FT:  050/15                               19
   C.   5000 FT:  260/10                               16
   D.  10000 FT:  270/20                               9
   E.  18000 FT:  270/30                               MS5
   F.  24000 FT:  290/40                               MS16
   G.  30000 FT:  290/50                               MS29
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      MAINLY CLOUDY WITH A FEW RAIN PATCHES AND MIST.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1200 FT  SCT 2500 FT  BKN 10000 FT.
   K. VISIBILITY    : 7 KM.  TEMPO 3000 M IN RAIN/MIST.
   L. 0 DEG. C LEVEL: 15500 FT      10 DEG. C LEVEL(S) : 9800 FT
   M. TURBULENCE    : MOD OFFSHORE AND NEAR HILLS.
   N. SEA STATE     : 1.5-2.0 M     SEA TEMPERATURE    : 27 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE TO FRESH EAST TO NORTHEASTERLY WINDS,
     OCCASIONALLY STRONG OFFSHORE LATER.  CLOUDY WITH
     A FEW RAIN PATCHES AND MIST.=

    ===================================================================
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 02:40 HKT on 16 Oct 18

    VHHK SIGMET 1 VALID 151840/152240 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N2130 E11148 - N2200 E11330 - N2112 E11342 - N2042 E11212 - N2130 E11148 TOP FL380 MOV S 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 17/Oct/2018 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     25.8 C
Minimum Air Temperature                     23.2 C
Grass Minimum Temperature                   23.3 C
Relative Humidity                        84 - 97 Percent
Rainfall                                     8.9 mm 
Total rainfall since 1st January          2063.2 mm
Against an average of                     2304.2 mm

Other Stations                Min                  Max
King's Park                  23.0 C               26.2 C
Wong Chuk Hang               23.3 C               28.2 C
Ta Kwu Ling                  20.9 C               26.3 C
Lau Fau Shan                 21.0 C               24.8 C
Tai Po                       21.9 C               25.3 C
Sha Tin                      22.7 C               25.4 C
Tuen Mun                     22.4 C               26.1 C
Tseung Kwan O                21.6 C               25.6 C
Sai Kung                     23.1 C               25.4 C
Cheung Chau                  22.6 C               29.0 C
Chek Lap Kok                 22.7 C               27.0 C
Tsing Yi                     22.9 C               27.0 C
Shek Kong                    21.8 C               25.8 C
Tsuen Wan Ho Koon            21.5 C               25.5 C
Tsuen Wan Shing Mun Valley   22.2 C               27.9 C
Hong Kong Park               23.0 C               26.1 C
Shau Kei Wan                 22.3 C               26.5 C
Kowloon City                 22.5 C               26.4 C
Happy Valley                 23.4 C               27.2 C
Wong Tai Sin                 22.7 C               27.3 C
Stanley                      22.8 C               27.5 C
Kwun Tong                    22.8 C               25.9 C
Sham Shui Po                 22.8 C               27.2 C
Kai Tak Runway Park          23.2 C               28.1 C
Yuen Long Park               21.9 C               26.0 C
Tai Mei Tuk               21.8 C               25.2 C

Duration of sunshine (King's Park):              0.6 H
The mean UV index recorded at King's Park yesterday was 1,
the UV intensity was Low.
The maximum UV index for yesterday was 8.
 

Yesterday's (16 Oct 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                        0.15

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 16 Oct
     2003copy right image | Important notices | Privacy policy Last revision date: <17 Oct 2018> 

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