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Bulletin issued at 07:02 HKT 29/Apr/2018

At 7 a.m. at the Hong Kong Observatory the air temperature was 24 degrees Celsius and the relative humidity 87 per cent.

The air temperatures at other places were:

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


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


Climatological Information for 29 Apr

Regional Weather in Hong Kong

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Hong Kong Climatology


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Bulletin updated at 06:45 HKT 29/Apr/2018

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

A broad band of clouds is covering southern China.

Weather forecast for today

Mainly cloudy with one or two showers. Visibility relatively low in some areas at first. Sunny intervals during the day with a maximum temperature of about 28 degrees. Moderate east to southeasterly winds.

Outlook : Hot with sunny periods in the next couple of days.


(The above forecast period is valid up to 23:59 HKT today, 29/04/2018; 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 21:00 HKT 28/Apr/2018

N0 WARNING.

GENERAL SITUATION AT 280900 UTC:
AN EASTERLY AIRSTREAM IS AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 281300 UTC:

HONG KONG= E TO SE 4-5, OCNL 6. DOWN TO 2000 M IN MIST PATCHES. ISOL SHOWERS LATER. SEA UP TO 3 M. TEMP 24-28 C. =
KWANGTUNG= E TO SE 4-5, OCNL 6. DOWN TO 2000 M IN MIST PATCHES. ISOL SHOWERS AND TS. SEA UP TO 3 M. SWELL E UP TO 2 M. =
TAIWAN STRAIT= E TO NE 5-6, SE 4-5 LATER. DOWN TO 2000 M IN MIST OR RAIN PATCHES. SEA 2-3 M. SWELL NE UP TO 2 M. =
BASHI= E 5-6. ISOL SHOWERS. SEA 2-3 M. SWELL NE 2 M. =
PRATAS= E 4-5, OCNL 6. ISOL SHOWERS. SEA UP TO 3 M. SWELL E TO NE 2 M. =
BALINTANG= E 5-6. ISOL SHOWERS AND TS. SEA 2-3 M. SWELL NE 2 M. =
SCARBOROUGH= E 4-5. ISOL SHOWERS AND TS. SEA UP TO 2 M. SWELL NE 2 M. =
PARACEL= E TO SE 4-5. ISOL SHOWERS AND TS. SEA UP TO 2 M. SWELL E UP TO 2 M. =
TONKIN= E TO SE 4-5. DOWN TO 2000 M IN MIST PATCHES. ISOL SHOWERS AND TS. SEA UP TO 2 M. =
DANANG= E TO SE 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 05:30 HKT 29/Apr/2018

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 5:30 a.m. on 29 April 2018

    Warnings:
    Strong winds in Nan'ao, Shanwei and south of Hong Kong.

    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 4 to 5.
    One or two showers. Mist patches.
    Moderate seas.

    Nan'ao and Shanwei:
    East force 4 to 5, occasionally force 6.
    Moderate to rough seas.

    South of Hong Kong:
    East to southeast force 4 to 5, occasionally force 6.
    Moderate to rough seas.

    Shangchuan Dao:
    East to southeast force 4 to 5.
    Isolated showers and thunderstorms.
    Moderate seas.

    Outlook for the next 48 hours
    Southeasterly winds of force 4 to 5.

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

    Waglan Island Wind east-northeast force 4
      Visibility 6 Kilometres

    Shantou Wind north force 1
      Visibility 10 Kilometres

    Huangmaozhou Wind east force 4

    Macau Wind east force 2
      Visibility 3400 Metres in mist

    Xisha Wind east force 2
      Visibility 8 Kilometres

  • Explanation of Seas or Sea Waves
  • Explanation of Swells
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  • Visibility Readings in Hong Kong Waters
  • Map showing forecast areas
  • Tidal Information

    • WEATHER FORECAST FOR LOCAL AVIATION
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    Weather Forecast for Local Aviation

    Bulletin issued at 01:30 HKT 29/APR/2018
    (Next update at 9:00-9:30 HKT 29/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 0200 TO 1200 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  090/10-15                            22-27
   B.   2000 FT:  120/10-15                            19
   C.   5000 FT:  120/10                               16
   D.  10000 FT:  240/15                               10
   E.  18000 FT:  250/20                               MS4
   F.  24000 FT:  260/20                               MS15
   G.  30000 FT:  270/40                               MS30
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      MAINLY CLOUDY WITH A FEW ISOLATED SHOWERS AND
      LOCALIZED MIST
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 2000 FT  SCT 3500 FT.
   K. VISIBILITY    : 7 KM.  TEMPO 4000 M IN SHOWERS/MIST.
   L. 0 DEG. C LEVEL: 16500 FT      10 DEG. C LEVEL(S) : 10000 FT
   M. TURBULENCE    : MOD AT LOW LEVELS
   N. SEA STATE     : 1.0-1.5 M     SEA TEMPERATURE    : 23 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE EAST TO SOUTHEASTERLY WINDS.  SUNNY
     INTERVALS.=

    ===================================================================
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 17:47 HKT on 26 Apr 18

    VHHK SIGMET 2 VALID 260555/260955 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N1948 E11254 - N1906 E11148 - N1930 E11130 - N2130 E11130 - N2212 E11312 - N1948 E11254 TOP FL380 MOV ENE 10KT NC= VHHK SIGMET 3 VALID 260955/261355 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N1954 E11242 - N1918 E11142 - N1930 E11130 - N2130 E11130 - N2206 E11306 - N2212 E11324 - N1954 E11242 TOP FL380 MOV ENE 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 29/Apr/2018 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     26.4 C
Minimum Air Temperature                     23.1 C
Grass Minimum Temperature                   22.6 C
Relative Humidity                        75 - 90 Percent
Rainfall                                     0.1 mm 
Total rainfall since 1st January           117.5 mm
Against an average of                      323.7 mm

Other Stations                Min                  Max
King's Park                  22.7 C               26.5 C
Wong Chuk Hang               22.8 C               26.3 C
Ta Kwu Ling                  23.1 C               27.4 C
Lau Fau Shan                 22.7 C               28.5 C
Tai Po                       23.1 C               25.2 C
Sha Tin                      22.9 C               26.8 C
Tuen Mun                     22.9 C               27.6 C
Tseung Kwan O                22.1 C               25.7 C
Sai Kung                     22.7 C               25.4 C
Cheung Chau                  22.8 C               27.3 C
Chek Lap Kok                 23.4 C               29.3 C
Tsing Yi                     23.6 C               27.1 C
Shek Kong                    23.3 C               28.1 C
Tsuen Wan Ho Koon            22.1 C               26.6 C
Tsuen Wan Shing Mun Valley   23.0 C               26.9 C
Hong Kong Park               22.7 C               25.7 C
Shau Kei Wan                 22.3 C               25.1 C
Kowloon City                 22.5 C               27.2 C
Happy Valley                 23.0 C               26.1 C
Wong Tai Sin                 22.5 C               26.3 C
Stanley                      22.2 C               25.9 C
Kwun Tong                    22.3 C               25.8 C
Sham Shui Po                 23.2 C               27.2 C
Kai Tak Runway Park          23.0 C               25.8 C
Yuen Long Park               23.6 C               28.3 C
Tai Mei Tuk               22.7 C               25.6 C

Duration of sunshine (King's Park):              0.7 H
The mean UV index recorded at King's Park yesterday was 2,
the UV intensity was Low.
The maximum UV index for yesterday was 7.
Sea surface temperature (Waglan Island):        23.4 C 

Yesterday's (28 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                               0.10
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 28 Apr
     2003copy right image | Important notices | Privacy policy Last revision date: <29 Apr 2018> 

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