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Bulletin issued at 09:02 HKT 10/Apr/2018

At 9 a.m. at the Hong Kong Observatory the air temperature was 23 degrees Celsius and the relative humidity 80 per cent.
During the past hour the mean UV Index recorded at King's Park was 2. The intensity of UV radiation was low.

The air temperatures at other places were:

King's Park 24 degrees;
Wong Chuk Hang 25 degrees;
Ta Kwu Ling 24 degrees;
Lau Fau Shan 22 degrees;
Tai Po 23 degrees;
Sha Tin 23 degrees;
Tuen Mun 24 degrees;
Tseung Kwan O 23 degrees;
Sai Kung 25 degrees;
Cheung Chau 25 degrees;
Chek Lap Kok 25 degrees;
Tsing Yi 24 degrees;
Shek Kong 25 degrees;
Tsuen Wan Ho Koon 22 degrees;
Tsuen Wan Shing Mun Valley 25 degrees;
Hong Kong Park 23 degrees;
Shau Kei Wan 24 degrees;
Kowloon City 24 degrees;
Happy Valley 24 degrees;
Wong Tai Sin 24 degrees;
Stanley 23 degrees;
Kwun Tong 24 degrees;
Sham Shui Po 24 degrees;
Kai Tak Runway Park 23 degrees;
Yuen Long Park 25 degrees;
Tai Mei Tuk 25 degrees.

Between midnight and 9 a.m. the minimum temperature was 21.1 degrees Celsius at the Hong Kong Observatory.


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


Climatological Information for 10 Apr

Regional Weather in Hong Kong

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Hong Kong Climatology


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Bulletin updated at 08:45 HKT 10/Apr/2018

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

An easterly airstream is affecting the coastal areas of Guangdong. Locally, temperatures over the territory this morning were generally two to three degrees higher than those of yesterday.

Weather forecast for today

Mainly fine. Hot during the day with a maximum temperature of about 28 degrees. Light to moderate east to southeasterly winds.

Outlook : Sunny periods in the next couple of days. Hot during the day.


(The above forecast period is valid up to 23:59 HKT today, 10/04/2018; 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 09:00 HKT 10/Apr/2018

N0 WARNING.

GENERAL SITUATION AT 092100 UTC:
AN EASTERLY AIRSTREAM IS GENERALLY AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 100100 UTC:

HONG KONG= E TO SE 3-4. FINE. DOWN TO 4000 M IN MIST PATCHES LATER. SWELL E TO NE UP TO 2 M. TEMP 28-23 C. =
KWANGTUNG= E TO SE 4, OCNL 5. DOWN TO 2000 M IN MIST OR RAIN PATCHES. SEA UP TO 2 M. SWELL E TO NE 2 M. =
TAIWAN STRAIT= E TO SE 4, OCNL 5. DOWN TO 2000 M IN MIST OR RAIN PATCHES. SEA UP TO 2 M. SWELL NE UP TO 2 M. =
BASHI= E TO SE 4-5, 6 AT FIRST. ISOL SHOWERS. SEA UP TO 2 M, 3 M AT FIRST. SWELL E TO NE 2 M. =
PRATAS= E TO SE 4, OCNL 5. ISOL SHOWERS. SEA UP TO 2 M. SWELL E TO NE 2 M. =
BALINTANG= E TO SE 4-5, 6 AT FIRST. ISOL SHOWERS. SEA UP TO 2 M, 3 M AT FIRST. SWELL E TO NE 2 M. =
SCARBOROUGH= E TO NE 4, OCNL 5. FINE. SEA UP TO 2 M. SWELL NE 2 M. =
PARACEL= E TO SE 4, OCNL 5. DOWN TO 2000 M IN MIST OR RAIN PATCHES IN N. SEA UP TO 2 M. SWELL E TO NE 2 M. =
TONKIN= SE 4, OCNL 5. DOWN TO 2000 M IN MIST OR RAIN PATCHES. SEA UP TO 2 M. SWELL E TO NE UP TO 2 M. =
DANANG= E TO SE 4-5. DOWN TO 2000 M IN MIST OR RAIN PATCHES IN N. SEA UP TO 2 M. SWELL E TO NE 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
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    • 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 09:30 HKT 10/Apr/2018

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 9:30 a.m. on 10 April 2018

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

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    East to southeast force 3 to 4.
    Mist patches later.
    Slight to moderate seas.

    Nan'ao, Shanwei, South of Hong Kong and Shangchuan Dao:
    East to southeast force 4, occasionally force 5.
    Moderate seas.

    Outlook for the next 48 hours
    South to southeasterly winds of force 4 to 5, occasionally force 6 .

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

    Waglan Island Wind northeast force 3
      Visibility 15 Kilometres

    Shantou Wind west-northwest force 1
      Visibility 13 Kilometres

    Huangmaozhou Wind east force 4

    Macau Wind east-southeast force 1
      Visibility 10 Kilometres

    Xisha Wind east-northeast force 2
      Visibility 15 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 09:00 HKT 10/APR/2018
    (Next update at 12:30 HKT 10/APR/2018)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     NIL.
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:  090/5-10
       OFFSHORE:  120/10 OCNL 15                       23-28
   B.   2000 FT:  150/10-15                            18
   C.   5000 FT:  180/10                               13
   D.  10000 FT:  250/20                               9
   E.  18000 FT:  280/30                               MS5
   F.  24000 FT:  270/40                               MS29
   G.  30000 FT:  270/65                               MS31
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      4800-5000 FT
   I. WEATHER       : 
      MAINLY FINE.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 2000 FT.
   K. VISIBILITY    : 9 KM.
   L. 0 DEG. C LEVEL: 14500 FT      10 DEG. C LEVEL(S) : 9400 FT
   M. TURBULENCE    : NIL
   N. SEA STATE     : 0.5-1.5 M     SEA TEMPERATURE    : 23 DEG
IV.  FURTHER OUTLOOK: 
     LIGHT TO MODERATE EAST TO SOUTHEASTERLY 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.

    The latest significant weather information
    issued by the Hong Kong Observatory at 14:15 HKT on 07 Apr 18

    VHHK SIGMET 1 VALID 070615/071015 VHHH- VHHK HONG KONG FIR SEV ICE OBS N OF N2030 AND E OF E11230 FL140/200 MOV E 10KT 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 10/Apr/2018 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     26.5 C
Minimum Air Temperature                     19.0 C
Grass Minimum Temperature                   17.0 C
Relative Humidity                        64 - 86 Percent
Rainfall                                       0 mm 
Total rainfall since 1st January            89.4 mm
Against an average of                      216.4 mm

Other Stations                Min                  Max
King's Park                  17.5 C               25.7 C
Wong Chuk Hang               15.9 C               25.9 C
Ta Kwu Ling                  12.8 C               26.9 C
Lau Fau Shan                 15.3 C               26.1 C
Tai Po                       15.8 C               24.2 C
Sha Tin                      14.6 C               25.9 C
Tuen Mun                     16.2 C               26.2 C
Tseung Kwan O                15.0 C               23.6 C
Sai Kung                     16.0 C               23.4 C
Cheung Chau                  17.0 C               27.0 C
Chek Lap Kok                 18.2 C               27.1 C
Tsing Yi                     16.9 C               27.2 C
Shek Kong                    14.1 C               27.4 C
Tsuen Wan Ho Koon            15.1 C               25.7 C
Tsuen Wan Shing Mun Valley   15.0 C               27.2 C
Hong Kong Park               17.6 C               24.5 C
Shau Kei Wan                 17.7 C               23.8 C
Kowloon City                 17.6 C               25.8 C
Happy Valley                 16.6 C               26.1 C
Wong Tai Sin                 17.2 C               25.4 C
Stanley                      17.9 C               24.4 C
Kwun Tong                    18.0 C               24.2 C
Sham Shui Po                 17.5 C               25.9 C
Yuen Long Park               14.5 C               27.5 C
Tai Mei Tuk               16.5 C               26.3 C

Duration of sunshine (King's Park):              10.7 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):        22.1 C 

Yesterday's (09 Apr 2018) average ambient gamma radiation
dose rate taken outdoors in Hong Kong ranged from 0.08 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                           0.08
Tap Mun                             0.09
Kat O                               0.11
Yuen Ng Fan                         0.12
Tai Mei Tuk                         0.12
Sha Tau Kok                         0.10
Kwun Tong                           0.12
Sai Wan Ho                          0.09
King's Park                         0.15
Tsim Bei Tsui                       0.13
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 09 Apr
     2003copy right image | Important notices | Privacy policy Last revision date: <10 Apr 2018> 

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