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Bulletin issued at 01:02 HKT 19/Aug/2019

At 1 a.m. at the Hong Kong Observatory the air temperature was 27 degrees Celsius and the relative humidity 89 per cent.

The air temperatures at other places were:

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


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


Climatological Information for 19 Aug

Regional Weather in Hong Kong

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Bulletin updated at 00:45 HKT 19/Aug/2019

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

An unstable southwesterly airstream brought thundery showers to the coast of Guangdong and the northern part of the South China Sea yesterday. Locally, there were sunny intervals yesterday morning, and the weather gradually became cloudy with showers and squally thunderstorms. Showers were heavier in the afternoon. More than 10 millimetres of rainfall were generally recorded over the territory. A trough of low pressure is expected to bring heavy showers and squally thunderstorms to the south China coast in the next couple of days.

Weather forecast for Hong Kong

Cloudy with a few showers. Showers will become more frequent with thunderstorms. Temperatures will range between 26 and 30 degrees. Moderate south to southwesterly winds.

Outlook : There will still be showers and thunderstorms in the following couple of days. The weather will improve and it will be very hot towards the weekend.


(The above forecast period is valid up to 23:59 HKT today, 19/08/2019; 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 18/Aug/2019

N0 WARNING.

GENERAL SITUATION AT 180900 UTC:
A SOUTHWESTERLY AIRSTREAM IS AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 181300 UTC:

HONG KONG= S TO SW 4-5, OCNL 6. DOWN TO 1000 M IN SCT HEAVY SQUALLY SHOWERS AND TS. SEA UP TO 3 M. SWELL SW 2 M. TEMP 26-30 C. =
KWANGTUNG= S TO SW 4-5, OCNL 6. DOWN TO 1000 M IN SCT HEAVY SQUALLY SHOWERS AND TS. SEA UP TO 3 M. SWELL SW 2 M. =
TAIWAN STRAIT= SW 5-6. DOWN TO 1000 M IN SCT HEAVY SQUALLY SHOWERS AND TS. SEA 2-3 M. SWELL SW 2 M. =
BASHI= W TO SW 5-6. DOWN TO 1000 M IN SCT HEAVY SQUALLY SHOWERS AND TS. SEA 2-3 M. SWELL SW 2 M. =
PRATAS= SW 4-5, OCNL 6. DOWN TO 1000 M IN SCT HEAVY SQUALLY SHOWERS AND TS. SEA UP TO 3 M. SWELL SW 2 M. =
BALINTANG= W TO SW 5-6. DOWN TO 1000 M IN SCT HEAVY SQUALLY SHOWERS AND TS. SEA 2-3 M. SWELL SW 2 M. =
SCARBOROUGH= SW 4-5. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 2 M. SWELL SW 2 M. =
PARACEL= S TO SW 4-5, OCNL 6. DOWN TO 1000 M IN SCT HEAVY SQUALLY SHOWERS AND TS. SEA UP TO 3 M. SWELL SW 2 M. =
TONKIN= SW 5-6. DOWN TO 1000 M IN SCT HEAVY SQUALLY SHOWERS AND TS. SEA 2-3 M. =
DANANG= S TO SW 4-5, OCNL 6. DOWN TO 1000 M IN SCT HEAVY SQUALLY SHOWERS AND TS. SEA UP TO 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 23:30 HKT 18/Aug/2019

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 11:30 p.m. on 18 August 2019

    Warnings:
    Strong winds in all areas.

    Weather Situation:
    An unstable southwesterly airstream is bringing thundery showers to the south China coastal waters.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    South to southwest force 4 to 5, occasionally force 6.
    Scattered heavy squally showers and thunderstorms.
    Moderate to rough seas.

    Nan'ao, Shanwei, South of Hong Kong and Shangchuan Dao:
    South to southwest force 4 to 5, occasionally force 6.
    Scattered heavy squally showers and thunderstorms.
    Moderate to rough seas.

    Outlook for the next 48 hours
    South to southwesterly winds of force 4 to 5. Scattered heavy squally showers and thunderstorms.

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

    Waglan Island Wind southwest force 3
      Visibility 24 Kilometres

    Shantou Wind west force 1
      Visibility 30 Kilometres

    Dongsha Wind southwest force 2
      Visibility 10 Kilometres

    Huangmaozhou Wind west-southwest force 3

    Xisha Wind southwest force 4
      Visibility 20 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 01:30 HKT 19/AUG/2019
    (Next update at 9:00-9:30 HKT 19/AUG/2019)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     ISOL CUNIM/TS AND ASSOCIATED HAZARDS.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     AN UNSTABLE SOUTHWESTERLY AIRSTREAM IS BRINGING
     THUNDERY SHOWERS TO THE SOUTH CHINA COAST.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 0200 TO 1200 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  190/5-10
                  TEMPO VRB/20G30 IN TS
       OFFSHORE:  220/15 OCNL 20                       26-30
   B.   2000 FT:  260/15 OCNL 20                       24
   C.   5000 FT:  270/25                               19
   D.  10000 FT:  270/25                               13
   E.  18000 FT:  320/10-15                            MS1
   F.  24000 FT:  010/15                               MS10
   G.  30000 FT:  020/15                               MS22
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL
   I. WEATHER       : 
      CLOUDY WITH SHOWERS AND SQUALLY THUNDERSTORMS.
      SHOWERS WILL BE HEAVY AT TIMES.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1500 FT
      TEMPO FEW 1000 FT SCT CB 1500 FT BKN 4000 FT
   K. VISIBILITY    : 9 KM. TEMPO 3000 M IN SHOWERS. TEMPO 1500 M IN TS.
   L. 0 DEG. C LEVEL: 17000 FT      10 DEG. C LEVEL(S) : 11400 FT
   M. TURBULENCE    : MOD TO SEV NEAR CUNIM/TS. MOD OFFSHORE AND NEAR HILLS
   N. SEA STATE     : 2.0-2.5 M     SEA TEMPERATURE    : 27 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE SOUTH TO SOUTHWESTERLY WINDS. CLOUDY
     WITH SHOWERS AND SQUALLY THUNDERSTORMS. SHOWERS
     WILL BE HEAVY AT TIMES.=

    ===================================================================
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 23:06 HKT on 18 Aug 19

    VHHK SIGMET 6 VALID 181505/181905 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N2032 E11730 - N1942 E11429 - N2015 E11320 - N2128 E11429 - N2158 E11537 - N2150 E11730 - N2032 E11730 TOP FL460 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/Aug/2019 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     31.6 C
Minimum Air Temperature                     25.0 C
Grass Minimum Temperature                   26.0 C
Relative Humidity                        74 - 93 Percent
Rainfall                                    19.0 mm 
Total rainfall since 1st January          1705.8 mm
Against an average of                     1727.8 mm

Other Stations                Min                  Max
King's Park                  24.5 C               32.0 C
Wong Chuk Hang               23.9 C               30.9 C
Ta Kwu Ling                  24.8 C               33.3 C
Lau Fau Shan                 24.3 C               31.4 C
Tai Po                       24.6 C               33.1 C
Sha Tin                      25.3 C               32.3 C
Tuen Mun                     24.8 C               32.2 C
Tseung Kwan O                24.4 C               32.8 C
Sai Kung                     25.6 C               33.4 C
Cheung Chau                  23.7 C               30.5 C
Chek Lap Kok                 25.6 C               32.5 C
Tsing Yi                     25.2 C               31.5 C
Shek Kong                    24.6 C               33.4 C
Tsuen Wan Ho Koon            24.0 C               30.3 C
Tsuen Wan Shing Mun Valley   24.5 C               32.9 C
Hong Kong Park               24.6 C               32.4 C
Shau Kei Wan                 24.1 C               32.9 C
Kowloon City                 24.5 C               32.3 C
Happy Valley                 24.6 C               33.3 C
Wong Tai Sin                 25.1 C               32.5 C
Stanley                      24.0 C               31.0 C
Kwun Tong                    24.6 C               31.9 C
Sham Shui Po                 25.1 C               32.2 C
Kai Tak Runway Park          24.3 C               32.6 C
Yuen Long Park               25.1 C               33.7 C
Tai Mei Tuk               24.8 C               33.6 C

Duration of sunshine (King's Park):              4.9 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 11.
 

Yesterday's (18 Aug 2019) 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                               0.11
Yuen Ng Fan                         0.12
Tai Mei Tuk                         0.11
Sha Tau Kok                         0.10
Kwun Tong                           0.13
Sai Wan Ho                          0.10
King's Park                         0.14
Tsim Bei Tsui                       0.13
Cape D'Aguilar                      0.13
Chek Lap Kok                        0.13

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 Aug
     2003copy right image | Important notices | Privacy policy Last revision date: <19 Aug 2019> 

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