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Bulletin issued at 16:02 HKT 11/Apr/2018

At 4 p.m. at the Hong Kong Observatory the air temperature was 27 degrees Celsius and the relative humidity 75 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 26 degrees;
Wong Chuk Hang 25 degrees;
Ta Kwu Ling 27 degrees;
Lau Fau Shan 26 degrees;
Tai Po 26 degrees;
Sha Tin 27 degrees;
Tuen Mun 27 degrees;
Tseung Kwan O 25 degrees;
Sai Kung 24 degrees;
Cheung Chau 25 degrees;
Chek Lap Kok 27 degrees;
Tsing Yi 26 degrees;
Shek Kong 29 degrees;
Tsuen Wan Ho Koon 25 degrees;
Tsuen Wan Shing Mun Valley 26 degrees;
Hong Kong Park 26 degrees;
Shau Kei Wan 24 degrees;
Kowloon City 27 degrees;
Happy Valley 27 degrees;
Wong Tai Sin 26 degrees;
Stanley 25 degrees;
Kwun Tong 26 degrees;
Sham Shui Po 27 degrees;
Kai Tak Runway Park 25 degrees;
Yuen Long Park 28 degrees;
Tai Mei Tuk 27 degrees.


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


Climatological Information for 11 Apr

Regional Weather in Hong Kong

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Hong Kong Climatology


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Bulletin updated at 16:15 HKT 11/Apr/2018

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

A weak ridge of high pressure is covering the coast of southeastern China.

Weather forecast for tonight and tomorrow

Mainly cloudy. Isolated showers tomorrow morning. The minimum temperature will be about 24 degrees. Hot with sunny periods during the day with a maximum temperature of around 29 degrees. Moderate south to southeasterly winds.

Outlook : Hot with sunny periods in the following couple of days. Temperatures falling on Sunday. More showers early next week and there will be thunderstorms.


(The above forecast period is valid up to 23:59 HKT tomorrow, 12/04/2018; 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 11/Apr/2018

N0 WARNING.

GENERAL SITUATION AT 102100 UTC:
AN EASTERLY AIRSTREAM IS GENERALLY AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 110100 UTC:

HONG KONG= SE 3-4. DOWN TO 4000 M IN MIST OR RAIN PATCHES. TEMP 29-24 C. =
KWANGTUNG= SE 4, OCNL 5. DOWN TO 4000 M IN MIST OR RAIN PATCHES. SEA UP TO 2 M. =
TAIWAN STRAIT= SE 4-5. DOWN TO 4000 M IN MIST OR RAIN PATCHES. SEA UP TO 2 M. =
BASHI= E TO SE 4-5, OCNL 6. ISOL SHOWERS AND TS. SEA UP TO 3 M. SWELL E TO SE UP TO 2 M. =
PRATAS= E TO SE 4-5. ISOL SHOWERS. SEA UP TO 2 M. =
BALINTANG= E TO SE 4-5, OCNL 6. ISOL SHOWERS AND TS. SEA UP TO 3 M. SWELL E TO SE UP TO 2 M. =
SCARBOROUGH= E TO NE 4, OCNL 5. FINE. SEA UP TO 2 M. =
PARACEL= SE 4, OCNL 5. DOWN TO 4000 M IN MIST PATCHES IN N. SEA UP TO 2 M. =
TONKIN= SE 4-5. DOWN TO 4000 M IN MIST PATCHES. SEA UP TO 2 M. =
DANANG= SE 4-5. DOWN TO 4000 M IN MIST PATCHES. 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
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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 16:30 HKT 11/Apr/2018

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 4:30 p.m. on 11 April 2018

    Weather Situation:
    A southerly airstream is affecting the south China coastal waters.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    South to southeast force 3 to 4.
    Mist patches, isolated showers tomorrow morning.
    Slight to moderate seas.

    Nan'ao and Shanwei:
    Southeast force 4.
    Moderate seas.

    South of Hong Kong and Shangchuan Dao:
    South 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 east-southeast force 3
      Visibility 18 Kilometres

    Shantou Wind south-southeast force 2
      Visibility 30 Kilometres

    Huangmaozhou Wind east-southeast force 3

    Macau Wind east force 2
      Visibility 14 Kilometres

    Xisha Wind southwest force 2
      Visibility 21 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 12:30 HKT 11/APR/2018
    (Next update at 17:30 HKT 11/APR/2018)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     NIL.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     A WEAK RIDGE OF HIGH PRESSURE IS COVERING THE
     COAST OF SOUTHEASTERN CHINA.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1300 TO 2300 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  140/5-10                             29-24
   B.   2000 FT:  190/10                               21
   C.   5000 FT:  240/15                               14
   D.  10000 FT:  250/20                               11
   E.  18000 FT:  260/30                               MS7
   F.  24000 FT:  270/40                               MS17
   G.  30000 FT:  280/55                               MS31
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL
   I. WEATHER       : 
      SUNNY PERIODS IN THE AFTERNOON. MAINLY CLOUDY
      TONIGHT.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1500 FT  SCT 3000 FT
   K. VISIBILITY    : 9 KM.
   L. 0 DEG. C LEVEL: 14500 FT      10 DEG. C LEVEL(S) : 10200 FT
   M. TURBULENCE    : NIL.
   N. SEA STATE     : 0.5-1.0 M     SEA TEMPERATURE    : 23 DEG
IV.  FURTHER OUTLOOK: 
     LIGHT TO MODERATE SOUTHERLY WINDS. MAINLY
     CLOUDY.  ISOLATED SHOWERS IN THE MORNING.=

    ===================================================================
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 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 11/Apr/2018 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     28.5 C
Minimum Air Temperature                     21.1 C
Grass Minimum Temperature                   19.3 C
Relative Humidity                        60 - 87 Percent
Rainfall                                       0 mm 
Total rainfall since 1st January            89.4 mm
Against an average of                      225.6 mm

Other Stations                Min                  Max
King's Park                  20.1 C               27.8 C
Wong Chuk Hang               18.7 C               26.8 C
Ta Kwu Ling                  18.0 C               28.3 C
Lau Fau Shan                 18.4 C               27.3 C
Tai Po                       19.2 C               27.0 C
Sha Tin                      18.8 C               28.0 C
Tuen Mun                     19.9 C               29.0 C
Tseung Kwan O                18.2 C               27.1 C
Sai Kung                     19.0 C               26.5 C
Cheung Chau                  20.1 C               28.4 C
Chek Lap Kok                 21.5 C               28.0 C
Tsing Yi                     19.6 C               28.4 C
Shek Kong                    17.6 C               30.3 C
Tsuen Wan Ho Koon            18.4 C               27.2 C
Tsuen Wan Shing Mun Valley   18.5 C               28.8 C
Hong Kong Park               19.7 C               27.4 C
Shau Kei Wan                 20.2 C               26.1 C
Kowloon City                 20.1 C               28.7 C
Happy Valley                 18.8 C               28.8 C
Wong Tai Sin                 19.6 C               27.8 C
Stanley                      20.2 C               26.4 C
Kwun Tong                    20.1 C               27.4 C
Sham Shui Po                 20.4 C               27.3 C
Kai Tak Runway Park          20.8 C               24.9 C
Yuen Long Park               18.0 C               28.4 C
Tai Mei Tuk               19.8 C               29.3 C

Duration of sunshine (King's Park):              8.0 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 8.
Sea surface temperature (Waglan Island):        22.5 C 

Yesterday's (10 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                        0.14

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 10 Apr
     2003copy right image | Important notices | Privacy policy Last revision date: <11 Apr 2018> 

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