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Bulletin issued at 17:02 HKT 08/Oct/2017

At 5 p.m. at the Hong Kong Observatory the air temperature was 29 degrees Celsius and the relative humidity 72 per cent.
During the past hour the mean UV Index recorded at King's Park was 0.8. 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 29 degrees;
Wong Chuk Hang 30 degrees;
Ta Kwu Ling 29 degrees;
Lau Fau Shan 30 degrees;
Tai Po 29 degrees;
Sha Tin 29 degrees;
Tuen Mun 30 degrees;
Tseung Kwan O 29 degrees;
Sai Kung 29 degrees;
Cheung Chau 28 degrees;
Chek Lap Kok 31 degrees;
Tsing Yi 30 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 28 degrees;
Kowloon City 29 degrees;
Happy Valley 30 degrees;
Wong Tai Sin 29 degrees;
Stanley 29 degrees;
Kwun Tong 29 degrees;
Sham Shui Po 29 degrees;
Kai Tak Runway Park 29 degrees;
Yuen Long Park 31 degrees;
Tai Mei Tuk 28 degrees.


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


Climatological Information for 8 Oct

Regional Weather in Hong Kong

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Hong Kong Climatology


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Automatic Regional Weather Forecast in Hong Kong & Pearl River Delta Region

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UV Index Forecast |  Weather Information for South China Coastal Waters

Bulletin updated at 16:45 HKT 08/Oct/2017

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

The northeast monsoon continues to affect the coast of Guangdong. Besides, an area of low pressure over the central part of the South China Sea is bringing unsettled weather to the region.

Weather forecast for tonight and tomorrow

Mainly cloudy. A few showers tomorrow. Sunny intervals during the day. Temperatures will range between 27 and 30 degrees. Moderate to fresh east to northeasterly winds, occasionally strong offshore.

Outlook : Sunny periods and one or two showers in the following couple of days.


(The above forecast period is valid up to 23:59 HKT tomorrow, 09/10/2017; 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 08/Oct/2017

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

GENERAL SITUATION AT 072100 UTC:
THE NORTHEAST MONSOON IS AFFECTING THE FORECAST AREAS. LOW 1004 HPA 16N 122E W 10KT INTST NC.

MARINE FORECAST FOR 24 HOURS FROM 080100 UTC:

HONG KONG= E TO NE 5-6, OCNL 7. ISOL SHOWERS. SEA 2-4 M. SWELL E TO NE 2 M. TEMP 32-27 C. =
KWANGTUNG= E TO NE 6-7, OCNL 8. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 3-5 M. SWELL NE 2 M. =
TAIWAN STRAIT= NE 7-8. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 4-6 M. SWELL NE 2-3 M. =
BASHI= E TO NE 7-8. DOWN TO 1000 M IN SCT HEAVY SQUALLY SHOWERS AND TS. SEA 4-6 M. SWELL NE 2-3 M. =
PRATAS= NE 7-8. DOWN TO 1000 M IN SCT HEAVY SQUALLY SHOWERS AND TS. SEA 4-6 M. SWELL NE 2-3 M. =
BALINTANG= E TO NE 7-8. DOWN TO 1000 M IN SCT HEAVY SQUALLY SHOWERS AND TS. SEA 4-6 M. SWELL NE 2-3 M. =
SCARBOROUGH= E TO NE 6-7, 8 IN N. DOWN TO 1000 M IN SCT HEAVY SQUALLY SHOWERS AND TS. SEA 3-4 M, 6 M IN N. SWELL NE 2-3 M. =
PARACEL= E TO NE 6-7. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 3-4 M. SWELL NE 2-3 M. =
TONKIN= E TO NE 5-6. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 2-3 M. =
DANANG= E TO NE 4-5, OCNL 6. DOWN TO 4000 M IN ISOL 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 16:30 HKT 08/Oct/2017

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 4:30 p.m. on 08 October 2017

    Warnings:
    Gale force winds in Nan'ao, Shanwei, south of Hong Kong and Shangchuan Dao. Strong winds in Hong Kong adjacent waters.

    Weather Situation:
    The northeast monsoon continues to affect the south China coastal waters. Besides, an area of low pressure is bringing unsettled weather to the central part of the South China Sea.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    East to northeast force 5 to 6, occasionally force 7.
    Isolated showers.
    Moderate to rough seas.

    Nan'ao:
    East to northeast force 7 to 8.
    Scattered squally showers and thunderstorms in south.
    Rough to very rough seas.

    Shanwei and South of Hong Kong:
    East to northeast force 6 to 7, occasionally force 8.
    Scattered squally showers and thunderstorms in south.
    Rough to very rough seas.

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

    Outlook for the next 48 hours
    East to northeasterly winds of force 6 to 7, up to force 8 in east at first. Scattered squally showers and thunderstorms.

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

    Waglan Island Wind east force 5

    Shantou Wind east-northeast force 3
      Visibility 30 Kilometres

    Dongsha Wind east-northeast force 5
      Visibility 10 Kilometres

    Macau Wind north-northeast force 2
      Visibility 11 Kilometres

    Xisha Wind east-northeast force 3
      Visibility 13 Kilometres

  • Explanation of Seas or Sea Waves
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  • Visibility Readings in Hong Kong Waters
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    • WEATHER FORECAST FOR LOCAL AVIATION
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    Weather Forecast for Local Aviation

    Bulletin issued at 17:30 HKT 08/OCT/2017
    (Next update at 01:30 HKT 09/OCT/2017)
    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 THE COAST
     OF GUANGDONG.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1800 TO 0400 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  080/10-15
       OFFSHORE:  080/20-25                            30-29
   B.   2000 FT:  080/20-25                            23
   C.   5000 FT:  090/20-25                            19
   D.  10000 FT:  090/25-30                            11
   E.  18000 FT:  090/25                               MS3
   F.  24000 FT:  080/20                               MS13
   G.  30000 FT:  060/15                               MS27
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      MAINLY CLOUDY.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 2500 FT.
   K. VISIBILITY    : 10 KM.
   L. 0 DEG. C LEVEL: 17000 FT      10 DEG. C LEVEL(S) : 11800 FT
   M. TURBULENCE    : MOD TO SEV OFFSHORE AND  NEAR HILLS
   N. SEA STATE     : 2.5-3.0 M     SEA TEMPERATURE    : 28 DEG
IV.  FURTHER OUTLOOK: 
     SUNNY INTERVALS WITH A FEW SHOWERS TOMORROW.
     MODERATE TO FRESH EASTERLY WINDS, OCCASIONALLY
     STRONG OFFSHORE.=

    ===================================================================
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 15:12 HKT on 08 Oct 17

    VHHK SIGMET 1 VALID 080315/080715 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N2100 E11730 - N1830 E11530 - N1830 E11242 - N2030 E11242 - N2100 E11730 TOP FL450 MOV W 15KT NC= VHHK SIGMET 2 VALID 080715/081115 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N2100 E11730 - N1642 E11400 - N1812 E11242 - N2018 E11342 - N2206 E11730 - N2100 E11730 TOP FL450 MOV W 15KT 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 08/Oct/2017 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     31.7 C
Minimum Air Temperature                     27.9 C
Grass Minimum Temperature                   27.1 C
Relative Humidity                        62 - 81 Percent
Rainfall                                       0 mm 
Total rainfall since 1st January          2461.2 mm
Against an average of                     2269.3 mm

Other Stations                Min                  Max
King's Park                  27.5 C               31.7 C
Wong Chuk Hang               28.3 C               32.0 C
Ta Kwu Ling                  26.5 C               33.1 C
Lau Fau Shan                 25.5 C               33.3 C
Tai Po                       27.7 C               30.9 C
Sha Tin                      28.1 C               31.7 C
Tuen Mun                     27.3 C               32.9 C
Tseung Kwan O                27.4 C               32.4 C
Sai Kung                     28.2 C               30.9 C
Cheung Chau                  27.2 C               31.3 C
Chek Lap Kok                 28.6 C               34.1 C
Tsing Yi                     28.1 C               32.3 C
Shek Kong                    28.0 C               32.5 C
Tsuen Wan Ho Koon            25.9 C               30.7 C
Tsuen Wan Shing Mun Valley   27.4 C               31.7 C
Hong Kong Park               27.9 C               32.3 C
Shau Kei Wan                 27.6 C               30.7 C
Kowloon City                 27.3 C               32.0 C
Happy Valley                 28.2 C               32.7 C
Wong Tai Sin                 27.6 C               31.9 C
Stanley                      27.8 C               30.5 C
Kwun Tong                    27.4 C               31.5 C
Sham Shui Po                 28.0 C               33.0 C
Kai Tak Runway Park          28.3 C               30.9 C
Yuen Long Park               27.9 C               33.6 C
Tai Mei Tuk               26.7 C               31.8 C

Duration of sunshine (King's Park):              8.5 H
The mean UV index recorded at King's Park yesterday was 4,
the UV intensity was Moderate.
The maximum UV index for yesterday was 9.
Sea surface temperature (Waglan Island):        29.4 C 

Yesterday's (07 Oct 2017) average ambient gamma radiation
dose rate taken outdoors in Hong Kong ranged from 0.08 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                           0.08
Tap Mun                             0.09
Kat O                               0.08
Yuen Ng Fan                         0.11
Tai Mei Tuk                         0.12
Sha Tau Kok                         0.10
Kwun Tong                           0.11
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 during
the period 1987-2016, the background ambient gamma radiation
levels may vary between 0.06 and 0.30 microsievert per hour.

    2. The extent of health effects to a person as a result of
exposure to radiation is expressed by a physical quantity
called equivalent dose, in unit of sievert.  Protective
action may be required if there is an increase in the
ambient gamma dose rate above background such that the total
additional dose is expected to exceed 5000 microsieverts in
a relatively short period of time. For example, a dose of
5000 microsieverts may be reached when the ambient gamma
dose rate is 1000 microsieverts per hour (several thousand
times above background) and lasts for 5 hours.

    3. The readings of ambient gamma radiation level from
instrument are expressed in unit of gray, which is
numerically equal to the gamma dose expressed in sievert.
    Climatological Information for 07 Oct
     2003copy right image | Important notices | Privacy policy Last revision date: <08 Oct 2017> 

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