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Bulletin issued at 16:02 HKT 05/Apr/2018

At 4 p.m. at the Hong Kong Observatory the air temperature was 26 degrees Celsius and the relative humidity 69 per cent.
During the past hour the mean UV Index recorded at King's Park was 3. The intensity of UV radiation was moderate.

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 27 degrees;
Wong Chuk Hang 26 degrees;
Ta Kwu Ling 27 degrees;
Lau Fau Shan 26 degrees;
Tai Po 27 degrees;
Sha Tin 27 degrees;
Tuen Mun 27 degrees;
Tseung Kwan O 27 degrees;
Sai Kung 25 degrees;
Cheung Chau 25 degrees;
Chek Lap Kok 26 degrees;
Tsing Yi 26 degrees;
Shek Kong 29 degrees;
Tsuen Wan Ho Koon 26 degrees;
Tsuen Wan Shing Mun Valley 27 degrees;
Hong Kong Park 26 degrees;
Shau Kei Wan 25 degrees;
Kowloon City 27 degrees;
Happy Valley 27 degrees;
Wong Tai Sin 27 degrees;
Stanley 26 degrees;
Kwun Tong 26 degrees;
Sham Shui Po 27 degrees;
Kai Tak Runway Park 24 degrees;
Yuen Long Park 29 degrees;
Tai Mei Tuk 27 degrees.


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


Climatological Information for 5 Apr

Regional Weather in Hong Kong

Information on Tropical Cyclones

Hong Kong Climatology


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Local Weather Forecast

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 16:15 HKT 05/Apr/2018

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

The weather is generally fine over the coast of southeastern China. Locally, temperatures over most parts of the territory rose to 28 degrees or above in the afternoon. Besides, a cold front has formed over central China and moved southwards gradually. It is expected to move across the coast of Guangdong later tomorrow.

Weather forecast for tonight and tomorrow

Becoming cloudy. A few showers tomorrow and relatively low visibility at first. The maximum temperature will be around 27 degrees. Light to moderate southeasterly winds, strengthening from the north later. Temperatures will fall significantly to a minimum of about 18 degrees tomorrow night.

Outlook : The weather will improve gradually during the weekend. It will be cool in the morning and very dry during the day. Mainly fine early next week and temperatures will rise.


(The above forecast period is valid up to 23:59 HKT tomorrow, 06/04/2018; 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 05/Apr/2018

GALE WARNING AREA: TONKIN.

GENERAL SITUATION AT 042100 UTC:
TROUGH 29N 106E 27N 110E 27N 112E 28N 115E 28N 122E S 5KT.

MARINE FORECAST FOR 24 HOURS FROM 050100 UTC:

HONG KONG= E TO SE 4. DOWN TO 4000 M IN MIST PATCHES. ISOL SHOWERS. TEMP 30-18 C. =
KWANGTUNG= E TO SE 4-5. DOWN TO 4000 M IN MIST PATCHES. ISOL SHOWERS. SEA UP TO 2 M. =
TAIWAN STRAIT= SE 4-5. DOWN TO 500 M IN FOG OR RAIN PATCHES. SEA UP TO 2 M. =
BASHI= E TO SE 5, OCNL 6. ISOL SHOWERS AT FIRST. SEA UP TO 3 M. SWELL E TO NE UP TO 2 M. =
PRATAS= E 4-5. FINE. ISOL SHOWERS AT FIRST. SEA UP TO 2 M. SWELL E TO NE UP TO 2 M. =
BALINTANG= E TO SE 5, OCNL 6. ISOL SHOWERS AT FIRST. SEA UP TO 3 M. SWELL E TO NE 2 M. =
SCARBOROUGH= E TO NE 4-5. ISOL SHOWERS AND TS. SEA UP TO 2 M. SWELL NE UP TO 2 M. =
PARACEL= E TO SE 4-5. FINE. SEA UP TO 2 M. =
TONKIN= SE 4-5, N 7-8 LATER. DOWN TO 4000 M IN MIST PATCHES. ISOL SHOWERS AND TS LATER. SEA 2 M, 4-6 M LATER. =
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
  • 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 05/Apr/2018

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 4:30 p.m. on 05 April 2018

    Warnings:
    Gale force winds in all areas.

    Weather Situation:
    A southeasterly airstream is affecting the south China coastal waters. Besides, a cold front has formed over central China and moved southwards gradually. It is expected to move across the south China coastal waters later tomorrow.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    East to southeast force 3 to 4, becoming north force 7 to 8 later.
    Mist patches. Isolated showers.
    Slight to moderate seas, becoming rough to very rough later.

    Nan'ao, Shanwei, South of Hong Kong and Shangchuan Dao:
    East to southeast force 4, occasionally force 5, becoming north force 7 to 8 later.
    Moderate seas, becoming rough to very rough later.

    Outlook for the next 48 hours
    North to northeasterly winds of force 7 to 8. Isolated showers and thunderstorms.

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

    Waglan Island Wind east force 1
      Visibility 28 Kilometres

    Shantou Wind southeast force 2
      Visibility 30 Kilometres

    Dongsha Wind east force 2
      Visibility 10 Kilometres

    Huangmaozhou Wind east-southeast force 3

    Macau Wind east force 2
      Visibility 18 Kilometres

    Xisha Wind north-northeast force 1
      Visibility 27 Kilometres

  • Explanation of Seas or Sea Waves
  • Explanation of Swells
  • Descriptive Terms of Wind Speeds
  • Visibility Readings in Hong Kong Waters
  • Map showing forecast areas
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    • WEATHER FORECAST FOR LOCAL AVIATION
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    Weather Forecast for Local Aviation

    Bulletin issued at 12:30 HKT 05/APR/2018
    (Next update at 17:30 HKT 05/APR/2018)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     NIL.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     A RIDGE OF HIGH PRESSURE IS BRINGING GENERALLY
     FINE WEATHER TO 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:  130/5-10
       OFFSHORE:  120/10-15                            30-24
   B.   2000 FT:  140/10-15                            18
   C.   5000 FT:  180/10                               16
   D.  10000 FT:  270/10                               10
   E.  18000 FT:  260/30                               MS7
   F.  24000 FT:  270/40                               MS18
   G.  30000 FT:  270/55                               MS32
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      4800-5000 FT
   I. WEATHER       : 
      MAINLY FINE APART FROM ONE OR TWO ISOLATED
      SHOWERS.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1500 FT. SCT 3500 FT
   K. VISIBILITY    : 9 KM.
   L. 0 DEG. C LEVEL: 16400 FT      10 DEG. C LEVEL(S) : 10000 FT
   M. TURBULENCE    : MOD NEAR HILLS
   N. SEA STATE     : 1.0-1.5 M     SEA TEMPERATURE    : 22 DEG
IV.  FURTHER OUTLOOK: 
     LIGHT TO MODERATE EASTERLY WINDS.  MAINLY
     CLOUDY. LOCALISED MIST.=

    ===================================================================
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 12:37 HKT on 20 Mar 18

    VHHK SIGMET 1 VALID 200040/200440 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N2100 E11730 - N1948 E11630 - N1800 E11254 - N1930 E11130 - N1948 E11130 - N2130 E11730 - N2100 E11730 TOP FL380 MOV ENE 20KT NC= VHHK SIGMET 2 VALID 200440/200840 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N2130 E11730 - N1706 E11336 - N1842 E11212 - N2324 E11730 - N2130 E11730 TOP FL350 MOV E 20KT WKN=

    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 05/Apr/2018 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     28.5 C
Minimum Air Temperature                     22.6 C
Grass Minimum Temperature                   20.7 C
Relative Humidity                        65 - 88 Percent
Rainfall                                       0 mm 
Total rainfall since 1st January            89.4 mm
Against an average of                      180.7 mm

Other Stations                Min                  Max
King's Park                  21.3 C               28.7 C
Wong Chuk Hang               19.8 C               27.2 C
Ta Kwu Ling                  17.6 C               30.2 C
Lau Fau Shan                 19.9 C               26.7 C
Tai Po                       20.2 C               27.1 C
Sha Tin                      19.7 C               28.2 C
Tuen Mun                     20.4 C               29.0 C
Tseung Kwan O                19.5 C               28.2 C
Sai Kung                     20.4 C               27.1 C
Cheung Chau                  21.0 C               28.0 C
Chek Lap Kok                 22.0 C               29.4 C
Tsing Yi                     20.7 C               28.1 C
Shek Kong                    18.6 C               29.2 C
Tsuen Wan Ho Koon            19.4 C               27.2 C
Tsuen Wan Shing Mun Valley   19.5 C               28.4 C
Hong Kong Park               21.0 C               27.9 C
Shau Kei Wan                 21.2 C               27.0 C
Kowloon City                 21.2 C               28.1 C
Happy Valley                 20.1 C               29.3 C
Wong Tai Sin                 21.2 C               28.0 C
Stanley                      20.8 C               27.0 C
Kwun Tong                    21.2 C               28.5 C
Sham Shui Po                 21.6 C               27.4 C
Kai Tak Runway Park          21.8 C               25.6 C
Yuen Long Park               19.0 C               29.0 C
Tai Mei Tuk               20.9 C               29.8 C

Duration of sunshine (King's Park):              10.5 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):        22.5 C 

Yesterday's (04 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 04 Apr
     2003copy right image | Important notices | Privacy policy Last revision date: <05 Apr 2018> 

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