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Bulletin issued at 18:02 HKT 05/Oct/2019

At 6 p.m. at the Hong Kong Observatory the air temperature was 30 degrees Celsius and the relative humidity 65 per cent.
During the past hour the mean UV Index recorded at King's Park was 0.1. The intensity of UV radiation was low.

Please be reminded that:

The Fire Danger Warning is Yellow and the fire risk is high.

The air temperatures at other places were:

King's Park 30 degrees;
Wong Chuk Hang 29 degrees;
Ta Kwu Ling 30 degrees;
Lau Fau Shan 29 degrees;
Tai Po 29 degrees;
Sha Tin 30 degrees;
Tuen Mun 30 degrees;
Tseung Kwan O 28 degrees;
Sai Kung 29 degrees;
Cheung Chau 28 degrees;
Chek Lap Kok 30 degrees;
Tsing Yi 29 degrees;
Shek Kong 30 degrees;
Tsuen Wan Ho Koon 28 degrees;
Tsuen Wan Shing Mun Valley 29 degrees;
Hong Kong Park 29 degrees;
Shau Kei Wan 29 degrees;
Kowloon City 30 degrees;
Happy Valley 29 degrees;
Wong Tai Sin 30 degrees;
Kwun Tong 29 degrees;
Sham Shui Po 29 degrees;
Kai Tak Runway Park 29 degrees;
Yuen Long Park 30 degrees;
Tai Mei Tuk 29 degrees.


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


Climatological Information for 5 Oct

Regional Weather in Hong Kong

Information on Tropical Cyclones

Hong Kong Climatology


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Bulletin updated at 17:45 HKT 05/Oct/2019

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

Showers triggered by high temperatures are affecting Guangdong. Meanwhile, pressure over the coast of southeastern China is rising, an easterly airstream is expected to reach the coast of Guangdong overnight.

Weather forecast for tonight and tomorrow

Becoming cloudy with a few showers. Temperatures will range between 25 and 29 degrees tomorrow. Showers will increase later and there will be squally thunderstorms. Light winds, strengthening from the east tomorrow.

Outlook : Still some showers, windier and slightly cooler on Chung Yeung Festival. Showers will ease off in the following couple of days.


(The above forecast period is valid up to 23:59 HKT tomorrow, 06/10/2019; 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 09:00 HKT 05/Oct/2019

N0 WARNING.

GENERAL SITUATION AT 042100 UTC:
AN NORTHEASTERLY AIRSTREAM IS GENERALLY AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 050100 UTC:

HONG KONG= E TO NE 4. ISOL SHOWERS. TEMP 32-26 C. =
KWANGTUNG= E TO NE 4-5, OCNL 6. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 3 M. =
TAIWAN STRAIT= NE 4-5, 6-7 LATER. ISOL SHOWERS AND TS. SEA UP TO 2 M, 3-4 M LATER. =
BASHI= E TO NE 4-5, 6 LATER. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 2-3 M. =
PRATAS= E TO NE 4-5, 6 LATER. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 2-3 M. =
BALINTANG= E TO NE 4-5, 6 LATER. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 2-3 M. =
SCARBOROUGH= NE 4-5, 6 LATER. ISOL SHOWERS AND TS. SEA 2-3 M. =
PARACEL= E TO NE 4-5. ISOL SHOWERS AND TS. SEA UP TO 2 M. =
TONKIN= E TO NE 4-5. ISOL SHOWERS AND TS. SEA UP TO 2 M. =
DANANG= E TO NE 4-5. ISOL SHOWERS AND TS. SEA 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 05/Oct/2019

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 4:30 p.m. on 05 October 2019

    Warnings:
    Strong winds in all areas.

    Weather Situation:
    An easterly airstream is expected to reach the coastal waters of Guangdong overnight.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    East force 4, becoming force 5 to 6.
    A few showers, squally thunderstorms later.
    Moderate seas, becoming rough.

    Nan'ao and Shanwei:
    East to northeast force 5, becoming force 6 to 7.
    Scattered showers and squally thunderstorms.
    Moderate seas, becoming rough.

    South of Hong Kong:
    East force 5, becoming force 6 to 7.
    Scattered showers and squally thunderstorms.
    Moderate seas, becoming rough.

    Shangchuan Dao:
    East to northeast force 4 to 5, force 6 later.
    Isolated showers and squally thunderstorms.
    Moderate seas, becoming rough later.

    Outlook for the next 48 hours
    East to northeasterly winds of force 5 to 6, force 7 at first. Scattered showers and squally thunderstorms.

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

    Waglan Island Wind south force 2

    Shantou Wind southeast force 2
      Visibility 20 Kilometres

    Huangmaozhou Wind south force 1

    Macau Wind east-southeast force 1
      Visibility 19 Kilometres

    Xisha Wind north-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 17:30 HKT 05/OCT/2019
    (Next update at 01:30 HKT 06/OCT/2019)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     ISOL CUNIM/TS AND ASSOCIATED HAZARDS.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     SHOWERS TRIGGERED BY HIGH TEMPERATURES ARE
     AFFECTING GUANGDONG. MEANWHILE, PRESSURE OVER
     THE COAST OF SOUTHEASTERN CHINA IS RISING, AN
     EASTERLY AIRSTREAM IS EXPECTED TO REACH THE
     COAST OF GUANGDONG OVERNIGHT.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1800 TO 0400 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  170/5-10
                  BECMG 090/10
                  TEMPO VRB/15G25 IN TS                31-26
   B.   2000 FT:  090/10                               24
   C.   5000 FT:  080/15                               18
   D.  10000 FT:  060/25                               10
   E.  18000 FT:  070/20                               MS5
   F.  24000 FT:  100/20                               MS16
   G.  30000 FT:  150/25                               MS30
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL
   I. WEATHER       : 
      MAINLY FINE. 
      ISOLATED SHOWERS AND THUNDERSTORMS AT FIRST.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 3000 FT. TEMPO FEW CB 1000 FT SCT 2000 FT.
   K. VISIBILITY    : 10 KM. TEMPO 4000 M IN SHOWERS. TEMPO 2500 M IN TS.
   L. 0 DEG. C LEVEL: 15500 FT      10 DEG. C LEVEL(S) : 10000 FT
   M. TURBULENCE    : MOD TO SEV NEAR CUNIM/TS
   N. SEA STATE     : 0.5-1.0 M     SEA TEMPERATURE    : 29 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE TO FRESH EASTERLY WINDS, OCCASIONALLY
     STRONG OFFSHORE AND ON HIGH GROUND. 
     MAINLY CLOUDY WITH SHOWERS AND ISOLATED THUNDERSTORMS.=

    ===================================================================
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.

    There is no Significant Weather Information (SIGMET)

    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 05/Oct/2019 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     31.3 C
Minimum Air Temperature                     26.9 C
Grass Minimum Temperature                   24.7 C
Relative Humidity                        61 - 77 Percent
Rainfall                                       0 mm 
Total rainfall since 1st January          2233.2 mm
Against an average of                     2248.4 mm

Other Stations                Min                  Max
King's Park                  25.9 C               30.9 C
Wong Chuk Hang               24.1 C               31.1 C
Ta Kwu Ling                  21.3 C               33.2 C
Lau Fau Shan                 24.4 C               31.5 C
Tai Po                       23.7 C               30.8 C
Sha Tin                      23.6 C               32.6 C
Tuen Mun                     25.1 C               32.2 C
Tseung Kwan O                23.9 C               31.6 C
Sai Kung                     24.6 C               32.2 C
Cheung Chau                  24.5 C               34.5 C
Chek Lap Kok                 25.8 C               33.4 C
Tsing Yi                     24.4 C               31.8 C
Shek Kong                    22.6 C               34.0 C
Tsuen Wan Ho Koon            22.8 C               30.7 C
Tsuen Wan Shing Mun Valley   23.1 C               33.1 C
Hong Kong Park               25.5 C               31.4 C
Shau Kei Wan                 25.4 C               30.9 C
Kowloon City                 25.9 C               33.3 C
Wong Tai Sin                 25.8 C               33.0 C
Kwun Tong                    26.0 C               32.4 C
Sham Shui Po                 25.6 C               34.1 C
Kai Tak Runway Park          26.1 C               31.8 C
Yuen Long Park               23.2 C               33.1 C
Tai Mei Tuk               25.1 C               34.8 C

Duration of sunshine (King's Park):              8.0 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 7.
 

Yesterday's (04 Oct 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                           0.12
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 04 Oct
     2003copy right image | Important notices | Privacy policy Last revision date: <05 Oct 2019> 

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