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Bulletin issued at 10:02 HKT 09/Oct/2019

At 10 a.m. at the Hong Kong Observatory the air temperature was 28 degrees Celsius and the relative humidity 70 per cent.
During the past hour the mean UV Index recorded at King's Park was 3. The intensity of UV radiation was moderate.

The air temperatures at other places were:

King's Park 28 degrees;
Wong Chuk Hang 29 degrees;
Ta Kwu Ling 29 degrees;
Lau Fau Shan 29 degrees;
Tai Po 28 degrees;
Sha Tin 29 degrees;
Tuen Mun 30 degrees;
Tseung Kwan O 28 degrees;
Sai Kung 28 degrees;
Cheung Chau 28 degrees;
Chek Lap Kok 30 degrees;
Tsing Yi 29 degrees;
Shek Kong 29 degrees;
Tsuen Wan Ho Koon 27 degrees;
Tsuen Wan Shing Mun Valley 29 degrees;
Hong Kong Park 28 degrees;
Shau Kei Wan 28 degrees;
Kowloon City 29 degrees;
Happy Valley 28 degrees;
Wong Tai Sin 28 degrees;
Stanley 28 degrees;
Kwun Tong 28 degrees;
Sham Shui Po 30 degrees;
Kai Tak Runway Park 28 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 9 Oct

Regional Weather in Hong Kong

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Bulletin updated at 09:45 HKT 09/Oct/2019

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

An anticyclone aloft is bringing mainly fine weather to southeastern China.

Weather forecast for today

Mainly fine. Moderate to fresh easterly winds, occasionally strong offshore at first.

Outlook : Mainly fine and hot apart from isolated showers in the next couple of days.


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

GALE WARNING AREA: TAIWAN STRAIT.

GENERAL SITUATION AT 082100 UTC:
AN EASTERLY AIRSTREAM IS AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 090100 UTC:

HONG KONG= E 6-7. RAIN PATCHES. SEA 3-4 M. SWELL NE 2-3 M. TEMP 30-27 C. =
KWANGTUNG= E TO NE 6-7. RAIN PATCHES. SEA 3-4 M. SWELL NE 2-3 M. =
TAIWAN STRAIT= NE 6-7, 8 AT FIRST. RAIN PATCHES. SEA 3-4 M, 6 M AT FIRST. SWELL NE 3 M. =
BASHI= E TO NE 5-6, 7 AT FIRST. RAIN PATCHES. SEA 2-3 M, 4 M AT FIRST. SWELL NE 2-3 M. =
PRATAS= E TO NE 6-7. ISOL SHOWERS. SEA 3-4 M. SWELL NE 2-3 M. =
BALINTANG= E TO NE 5-6, 7 AT FIRST. RAIN PATCHES. SEA 2-3 M, 4 M AT FIRST. SWELL NE 2-3 M. =
SCARBOROUGH= E TO NE 5-6. ISOL SHOWERS AND TS. SEA 2-3 M. SWELL NE 2 M. =
PARACEL= E TO NE 5-6. ISOL SHOWERS AND SQUALLY TS. SEA 2-3 M. =
TONKIN= E TO NE 4-5. ISOL SHOWERS AND SQUALLY TS. SEA UP TO 2 M. =
DANANG= E 4-5. ISOL SHOWERS AND SQUALLY 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.


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    • SOUTH CHINA COASTAL WATERS
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    South China Coastal Waters

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    9-day Weather Forecast | UV Index Forecast | Weather Information for Fishermen

    Bulletin issued at 09:30 HKT 09/Oct/2019

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 9:30 a.m. on 09 October 2019

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

    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 6 to 7.
    A few rain patches.
    Rough seas.

    Nan'ao:
    East to northeast force 6 to 7, occasionally force 8.
    Rough to very rough seas.

    Shanwei and South of Hong Kong:
    East to northeast force 6 to 7.
    Rough seas.

    Shangchuan Dao:
    East to northeast force 5 to 6, force 7 at first.
    Moderate to rough seas.

    Outlook for the next 48 hours
    East to northeasterly winds of force 4 to 5, force 6 at first. Isolated showers and thunderstorms later.

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

    Waglan Island Wind east-northeast force 5
      Visibility 16 Kilometres

    Shantou Wind east-southeast force 1
      Visibility 14 Kilometres

    Dongsha Wind northeast force 3
      Visibility 10 Kilometres

    Huangmaozhou Wind east-northeast force 6

    Macau Wind east-northeast force 3
      Visibility 10 Kilometres

    Xisha Wind east-northeast force 2
      Visibility 13 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 09:30 HKT 09/OCT/2019
    (Next update at 12:30 HKT 09/OCT/2019)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     STRONG WINDS AND SEV TURB.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     AN EASTERLY AIRSTREAM 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:  090/15, OCNL 20
       OFFSHORE:  090/25-30                            28-32
   B.   2000 FT:  080/15-20, OCNL 25                   21
   C.   5000 FT:  080/20                               17
   D.  10000 FT:  100/10                               10
   E.  18000 FT:  180/5-10                             MS2
   F.  24000 FT:  190/10                               MS15
   G.  30000 FT:  140/15                               MS25
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      MAINLY FINE. A FEW RAIN PATCHES.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 2500 FT.
   K. VISIBILITY    : 9 KM. TEMPO 4000 M IN RAIN PATCHES.
   L. 0 DEG. C LEVEL: 15500 FT      10 DEG. C LEVEL(S) : 10000 FT
   M. TURBULENCE    : MOD TO SEV AT LOW LEVELS.
   N. SEA STATE     : 4.0-5.5 M     SEA TEMPERATURE    : 29 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE TO FRESH EASTERLY WINDS. MAINLY FINE.=

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

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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)

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    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 09/Oct/2019 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     30.4 C
Minimum Air Temperature                     25.3 C
Grass Minimum Temperature                   24.9 C
Relative Humidity                        61 - 95 Percent
Rainfall                                     4.9 mm 
Total rainfall since 1st January          2302.8 mm
Against an average of                     2269.5 mm

Other Stations                Min                  Max
King's Park                  24.7 C               30.5 C
Wong Chuk Hang               25.7 C               30.9 C
Ta Kwu Ling                  24.2 C               32.3 C
Lau Fau Shan                 24.3 C               32.3 C
Tai Po                       24.5 C               29.9 C
Sha Tin                      25.0 C               31.2 C
Tuen Mun                     24.8 C               31.0 C
Tseung Kwan O                24.8 C               30.3 C
Sai Kung                     25.9 C               30.0 C
Cheung Chau                  24.4 C               30.6 C
Chek Lap Kok                 25.8 C               33.2 C
Tsing Yi                     24.9 C               31.7 C
Shek Kong                    23.7 C               31.7 C
Tsuen Wan Ho Koon            23.8 C               30.4 C
Tsuen Wan Shing Mun Valley   24.2 C               31.9 C
Hong Kong Park               24.6 C               31.4 C
Shau Kei Wan                 25.8 C               30.2 C
Kowloon City                 26.0 C               31.8 C
Happy Valley                 25.5 C               31.3 C
Wong Tai Sin                 26.4 C               31.6 C
Kwun Tong                    25.3 C               30.5 C
Sham Shui Po                 25.4 C               32.4 C
Kai Tak Runway Park          25.2 C               30.0 C
Yuen Long Park               23.7 C               32.5 C
Tai Mei Tuk               25.5 C               31.5 C

Duration of sunshine (King's Park):              8.4 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.
 

Yesterday's (08 Oct 2019) 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                           0.09
Tap Mun                             0.08
Kat O                               0.10
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 08 Oct
     2003copy right image | Important notices | Privacy policy Last revision date: <09 Oct 2019> 

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