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Bulletin issued at 21:02 HKT 19/Oct/2018

At 9 p.m. at the Hong Kong Observatory the air temperature was 24 degrees Celsius and the relative humidity 79 per cent.

Please be reminded that:

The Strong Monsoon Signal has been issued.

The air temperatures at other places were:

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


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


Climatological Information for 19 Oct

Regional Weather in Hong Kong

Information on Tropical Cyclones

Hong Kong Climatology


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Bulletin updated at 20:45 HKT 19/Oct/2018

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

A strong easterly airstream is affecting the coast of Guangdong.

Weather forecast for tonight and tomorrow

Mainly cloudy. There will be a few light rain patches at first. The minimum temperature will be about 23 degrees. Sunny intervals tomorrow with a maximum temperature of around 26 degrees. Fresh easterly winds, strong offshore at first.

Outlook : There will be sunny periods and temperatures will rise gradually early next week.


(The above forecast period is valid up to 23:59 HKT tomorrow, 20/10/2018; 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 21:00 HKT 19/Oct/2018

GALE WARNING AREAS: HONG KONG, KWANGTUNG, TAIWAN STRAIT, BASHI, PRATAS, BALINTANG, SCARBOROUGH AND PARACEL.

GENERAL SITUATION AT 190900 UTC:
AN EASTERLY AIRSTREAM IS AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 191300 UTC:

HONG KONG= E 7-8. A FEW RAIN PATCHES. SEA 4-6 M. SWELL NE 2-3 M. TEMP 23-26 C. =
KWANGTUNG= E 7-8. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 4-6 M. SWELL NE 2-3 M. =
TAIWAN STRAIT= NE 7-8. RAIN PATCHES. SEA 4-6 M. SWELL NE 3 M. =
BASHI= NE 7-8. ISOL SHOWERS AND TS. SEA 4-6 M. SWELL NE 2-3 M. =
PRATAS= E TO NE 7-8. ISOL SHOWERS AND TS. SEA 4-6 M. SWELL NE 2-3 M. =
BALINTANG= NE 7-8. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 4-6 M. SWELL NE 2-3 M. =
SCARBOROUGH= E TO NE 6-7, UP TO 8 LATER. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 3-4 M, UP TO 6 M LATER. SWELL NE 2-3 M. =
PARACEL= E 6-7, OCNL 8. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 6 M. SWELL NE 2-3 M. =
TONKIN= E 5-6. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 2-3 M. SWELL NE 2 M. =
DANANG= E 5-6, OCNL 7. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 4 M. SWELL NE 2-3 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
  • 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 19/Oct/2018

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 7:30 p.m. on 19 October 2018

    Warnings:
    Gale force winds in all areas.

    Weather Situation:
    An easterly airstream is affecting the south China coastal waters.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    East force 7 to 8.
    A few rain patches.
    Rough to very rough seas.

    Nan'ao and Shanwei:
    East force 7 to 8.
    Rough to very rough seas.

    South of Hong Kong:
    East force 7 to 8.
    Isolated squally showers and thunderstorms.
    Rough to very rough seas.

    Shangchuan Dao:
    East force 6 to 7, occasionally force 8.
    Isolated squally showers and thunderstorms.
    Rough to very rough seas.

    Outlook for the next 48 hours
    Easterly winds of force 5 to 6, occasionally force 7.

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

    Waglan Island Wind east-northeast force 6
      Visibility 11 Kilometres

    Shantou Wind east-northeast force 2
      Visibility 27 Kilometres

    Huangmaozhou Wind east force 8

    Macau Wind east-northeast force 4
      Visibility 10 Kilometres

    Xisha Wind east force 2
      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 17:30 HKT 19/OCT/2018
    (Next update at 01:30 HKT 20/OCT/2018)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     GALE FORCE WINDS.  SEV TURB.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     A STRONG EASTERLY AIRSTREAM IS AFFECTING THE
     COAST OF GUANGDONG.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1800 TO 0400 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  080/15, OCNL 20
       OFFSHORE:  080/25-30, OCNL 35                   26-22
   B.   2000 FT:  100/25-30                            18
   C.   5000 FT:  120/15                               16
   D.  10000 FT:  230/10                               8
   E.  18000 FT:  280/25                               MS4
   F.  24000 FT:  290/30                               MS16
   G.  30000 FT:  290/35                               MS30
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      2700 - 3100 FT.
   I. WEATHER       : 
      MAINLY CLOUDY WITH A FEW RAIN PATCHES.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 2000 FT  SCT 4000 FT.
   K. VISIBILITY    : 9 KM.  TEMPO 4000 M IN RAIN.
   L. 0 DEG. C LEVEL: 16000 FT      10 DEG. C LEVEL(S) : 8400 FT
   M. TURBULENCE    : MOD TO SEV.
   N. SEA STATE     : 3.5-5.0 M     SEA TEMPERATURE    : 26 DEG
IV.  FURTHER OUTLOOK: 
     FRESH EASTERLY WINDS, STRONG OFFSHORE AT FIRST.
     MAINLY CLOUDY WITH A FEW RAIN PATCHES AT FIRST.
     SUNNY INTERVALS DURING THE DAY.=

    ===================================================================
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 20:40 HKT on 19 Oct 18

    VHHK SIGMET 3 VALID 190840/191240 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N1900 E11554 - N1730 E11442 - N1724 E11342 - N1730 E11318 - N1924 E11136 - N2018 E11342 - N1900 E11554 TOP FL400 STNR WKN= VHHK SIGMET 4 VALID 191240/191640 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N1924 E11136 - N1800 E11248 - N1730 E11442 - N1848 E11542 - N1936 E11400 - N1924 E11136 TOP FL400 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 19/Oct/2018 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     23.9 C
Minimum Air Temperature                     20.9 C
Grass Minimum Temperature                   21.4 C
Relative Humidity                        78 - 96 Percent
Rainfall                                    12.6 mm 
Total rainfall since 1st January          2077.3 mm
Against an average of                     2309.7 mm

Other Stations                Min                  Max
King's Park                  20.3 C               23.6 C
Wong Chuk Hang               20.9 C               24.1 C
Ta Kwu Ling                  19.6 C               23.5 C
Lau Fau Shan                 19.2 C               24.7 C
Tai Po                       20.0 C               22.9 C
Sha Tin                      20.5 C               24.0 C
Tuen Mun                     19.7 C               23.1 C
Tseung Kwan O                20.2 C               23.6 C
Sai Kung                     20.5 C               24.5 C
Cheung Chau                  20.3 C               23.0 C
Chek Lap Kok                 20.3 C               25.3 C
Tsing Yi                     21.0 C               24.2 C
Shek Kong                    19.7 C               23.5 C
Tsuen Wan Ho Koon            19.9 C               22.7 C
Tsuen Wan Shing Mun Valley   20.4 C               23.6 C
Hong Kong Park               20.6 C               24.2 C
Shau Kei Wan                 20.1 C               24.1 C
Kowloon City                 20.1 C               23.5 C
Happy Valley                 21.0 C               24.4 C
Wong Tai Sin                 20.6 C               24.0 C
Stanley                      21.0 C               24.2 C
Kwun Tong                    20.4 C               23.7 C
Sham Shui Po                 20.5 C               23.8 C
Kai Tak Runway Park          20.9 C               24.5 C
Yuen Long Park               19.4 C               23.4 C
Tai Mei Tuk               19.9 C               22.8 C

Duration of sunshine (King's Park):              0.2 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 (18 Oct 2018) average ambient gamma radiation
dose rate taken outdoors in Hong Kong ranged from 0.10 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                           0.10
Tap Mun                             0.10
Kat O                               0.11
Yuen Ng Fan                         0.12
Tai Mei Tuk                         0.13
Sha Tau Kok                         0.11
Kwun Tong                           0.13
Sai Wan Ho                          0.10
King's Park                         0.15
Tsim Bei Tsui                       0.14
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 18 Oct
     2003copy right image | Important notices | Privacy policy Last revision date: <19 Oct 2018> 

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