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Bulletin issued at 10:02 HKT 18/Oct/2018

At 10 a.m. at the Hong Kong Observatory the air temperature was 21 degrees Celsius and the relative humidity 94 per cent.
During the past hour the mean UV Index recorded at King's Park was 1. The intensity of UV radiation was low.

The air temperatures at other places were:

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

Between 8:45 and 9:45 a.m., the rainfall recorded in various regions were:

Tuen Mun 0 to 3 mm;
Tsuen Wan 1 to 2 mm;
Yuen Long 0 to 2 mm;
Sai Kung 0 to 2 mm;
Sha Tin 2 mm;
Wong Tai Sin 1 to 2 mm;
Sham Shui Po 1 mm;
North District 0 to 1 mm;
Tai Po 0 to 1 mm;
Yau Tsim Mong 0 to 1 mm;
Kwai Tsing 1 mm;
Kowloon City 0 to 1 mm;
Islands District 0 to 1 mm;
Kwun Tong 0 to 1 mm.


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


Climatological Information for 18 Oct

Regional Weather in Hong Kong

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Bulletin updated at 09:45 HKT 18/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 today

Cloudy with a few rain patches. It will be slightly cooler. Fresh east to northeasterly winds, occasionally strong offshore later.

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


(The above forecast period is valid up to 23:59 HKT today, 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 18/Oct/2018

GALE WARNING AREAS: TAIWAN STRAIT AND BASHI.

GENERAL SITUATION AT 172100 UTC:
THE NORTHEAST MONSOON IS AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 180100 UTC:

HONG KONG= E TO NE 6-7. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 3-4 M. SWELL N TO NE 2 M. TEMP 24-23 C. =
KWANGTUNG= E TO NE 6-7. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 3-4 M. SWELL N TO NE 2-3 M. =
TAIWAN STRAIT= 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= NE 6-7, BEC 8. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 3-4 M, BEC 6 M. SWELL N 2-3 M. =
PRATAS= E TO NE 6-7. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 3-4 M. SWELL N TO NE 2-3 M. =
BALINTANG= E TO NE 5-6, BEC 7. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 2-3 M, BEC 4 M. SWELL N 2-3 M. =
SCARBOROUGH= E TO NE 4-5, BEC 6. ISOL SHOWERS AND TS. SEA 2 M, BEC 3 M. SWELL N TO NE 2 M, 3 M LATER. =
PARACEL= NE 5-6, BEC E 7. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 2-3 M, UP TO 4 M LATER. SWELL N TO NE 2 M. =
TONKIN= NE 5-6, BEC E 5-6. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 2-3 M. SWELL N TO NE 2 M. =
DANANG= NE 4-5, BEC E 5. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 2 M. SWELL N TO NE 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
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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 09:30 HKT 18/Oct/2018

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 9:30 a.m. on 18 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:
    East to northeast force 6 to 7.
    Isolated squally showers and thunderstorms.
    Rough seas.

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

    South of Hong Kong:
    East to northeast force 6 to 7.
    Isolated squally showers and thunderstorms.
    Rough seas.

    Shangchuan Dao:
    Northeast force 5 to 6, becoming east up to force 7.
    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 northeast force 6
      Visibility 8 Kilometres

    Shantou Wind east-northeast force 2
      Visibility 17 Kilometres

    Dongsha Wind east-northeast force 3
      Visibility 10 Kilometres

    Huangmaozhou Wind east-northeast force 5

    Macau Wind north-northeast force 3
      Visibility 1600 Metres in rain

    Xisha Wind east-northeast 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 09:00 HKT 18/OCT/2018
    (Next update at 12:30 HKT 18/OCT/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 THE SOUTH
     CHINA COASTAL AREAS.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1000 TO 2000 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  040/10
                  BECMG 090/15-20
       OFFSHORE:  030/15-20
                  BECMG 090/20-25                      20-24
   B.   2000 FT:  060/15
                  BECMG 090/20-25                      17
   C.   5000 FT:  050/5                                15
   D.  10000 FT:  260/10                               8
   E.  18000 FT:  250/30                               MS3
   F.  24000 FT:  290/40                               MS14
   G.  30000 FT:  280/30                               MS29
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      CLOUDY WITH A FEW RAIN PATCHES.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1000 FT  SCT 2500 FT  BKN 8000 FT.
   K. VISIBILITY    : 7 KM.  TEMPO 4000 M IN RAIN.
   L. 0 DEG. C LEVEL: 15500 FT      10 DEG. C LEVEL(S) : 8800 FT
   M. TURBULENCE    : MOD TO SEV
   N. SEA STATE     : 2.0-3.5 M     SEA TEMPERATURE    : 25 DEG
IV.  FURTHER OUTLOOK: 
     FRESH EASTERLY WINDS, STRONG OFFSHORE.  CLOUDY
     WITH A FEW RAIN PATCHES.=

    ===================================================================
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 08:56 HKT on 18 Oct 18

    VHHK SIGMET 1 VALID 180056/180455 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N1818 E11230 - N1930 E11130 - N2006 E11130 - N2148 E11524 - N1954 E11542 - N1942 E11318 - N1818 E11230 TOP FL420 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 18/Oct/2018 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     25.2 C
Minimum Air Temperature                     21.9 C
Grass Minimum Temperature                   22.8 C
Relative Humidity                        76 - 93 Percent
Rainfall                                     1.5 mm 
Total rainfall since 1st January          2064.7 mm
Against an average of                     2306.7 mm

Other Stations                Min                  Max
King's Park                  21.4 C               25.2 C
Wong Chuk Hang               21.8 C               26.5 C
Ta Kwu Ling                  20.8 C               23.0 C
Lau Fau Shan                 20.1 C               23.0 C
Tai Po                       20.4 C               23.0 C
Sha Tin                      21.0 C               23.8 C
Tuen Mun                     20.9 C               23.7 C
Tseung Kwan O                20.8 C               25.1 C
Sai Kung                     21.2 C               23.9 C
Cheung Chau                  20.5 C               25.6 C
Chek Lap Kok                 21.6 C               24.9 C
Tsing Yi                     21.8 C               25.3 C
Shek Kong                    20.8 C               23.1 C
Tsuen Wan Ho Koon            20.1 C               23.6 C
Tsuen Wan Shing Mun Valley   20.8 C               24.3 C
Hong Kong Park               21.1 C               25.9 C
Shau Kei Wan                 20.9 C               26.9 C
Kowloon City                 21.0 C               25.0 C
Happy Valley                 22.0 C               26.4 C
Wong Tai Sin                 21.0 C               25.0 C
Stanley                      21.2 C               26.4 C
Kwun Tong                    21.1 C               25.3 C
Sham Shui Po                 21.0 C               24.8 C
Kai Tak Runway Park          21.6 C               26.2 C
Yuen Long Park               20.6 C               23.4 C
Tai Mei Tuk               20.5 C               23.6 C

Duration of sunshine (King's Park):              0 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 4.
 

Yesterday's (17 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                         0.11
Kwun Tong                           0.13
Sai Wan Ho                          0.09
King's Park                         0.15
Tsim Bei Tsui                       0.13
Cape D'Aguilar                      0.14
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 17 Oct
     2003copy right image | Important notices | Privacy policy Last revision date: <18 Oct 2018> 

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