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Weather Information for South China Coastal Waters

Bulletin issued at 01:02 HKT 26/Apr/2018

At 1 a.m. at the Hong Kong Observatory the air temperature was 23 degrees Celsius and the relative humidity 90 per cent.

The air temperatures at other places were:

King's Park 22 degrees;
Wong Chuk Hang 23 degrees;
Ta Kwu Ling 22 degrees;
Lau Fau Shan 21 degrees;
Tai Po 23 degrees;
Sha Tin 23 degrees;
Tuen Mun 22 degrees;
Tseung Kwan O 23 degrees;
Sai Kung 23 degrees;
Cheung Chau 22 degrees;
Chek Lap Kok 23 degrees;
Tsing Yi 22 degrees;
Shek Kong 22 degrees;
Tsuen Wan Ho Koon 21 degrees;
Tsuen Wan Shing Mun Valley 22 degrees;
Hong Kong Park 23 degrees;
Shau Kei Wan 22 degrees;
Kowloon City 21 degrees;
Happy Valley 23 degrees;
Wong Tai Sin 22 degrees;
Stanley 23 degrees;
Kwun Tong 22 degrees;
Sham Shui Po 22 degrees;
Kai Tak Runway Park 23 degrees;
Yuen Long Park 22 degrees;
Tai Mei Tuk 23 degrees.

Between 11:45 p.m. and 0:45 a.m., the rainfall recorded in various regions were:

Yuen Long 0 to 6 mm;
Sha Tin 0 to 4 mm;
Tsuen Wan 0 to 4 mm;
Tai Po 0 to 3 mm;
North District 0 to 2 mm;
Kwai Tsing 0 to 1 mm.


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


Climatological Information for 26 Apr

Regional Weather in Hong Kong

Information on Tropical Cyclones

Hong Kong Climatology


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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 00:45 HKT 26/Apr/2018

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

A broad band of clouds covered the south China coast and the northern part of the South China Sea yesterday. Meanwhile, showers affected the coast of Guangdong. Locally, it was cloudy with isolated showers. A band of rain-bearing clouds is expected to cover the coastal areas of Guangdong today and tomorrow.

Weather forecast for Hong Kong

Mainly cloudy with isolated showers. Temperatures will range between 23 and 26 degrees. Moderate easterly winds.

Outlook : Cloudy with isolated showers on Friday. The weather will improve gradually over the weekend. Mainly fine and hot early next week.


(The above forecast period is valid up to 23:59 HKT today, 26/04/2018; 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 25/Apr/2018

N0 WARNING.

GENERAL SITUATION AT 250900 UTC:
AN EASTERLY AIRSTREAM IS AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 251300 UTC:

HONG KONG= E 5, OCNL 6. ISOL SHOWERS AND TS. SEA UP TO 3 M. TEMP 23-26 C. =
KWANGTUNG= E TO NE 5-6. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 2-3 M. SWELL NE UP TO 2 M. =
TAIWAN STRAIT= NE 5-6. ISOL SHOWERS. SEA 2-3 M. SWELL NE 2 M. =
BASHI= E TO NE 5-6. ISOL SHOWERS AND TS. SEA 2-3 M. SWELL NE 2-3 M. =
PRATAS= E TO NE 5-6. ISOL SHOWERS AND TS. SEA 2-3 M. SWELL NE 2 M. =
BALINTANG= E TO NE 5-6. ISOL SHOWERS AND TS. SEA 2-3 M. SWELL NE 2 M. =
SCARBOROUGH= E TO NE 4-5. ISOL SHOWERS. SEA UP TO 2 M. SWELL NE UP TO 2 M. =
PARACEL= E TO SE 4-5. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS IN N. SEA UP TO 2 M. SWELL NE UP TO 2 M. =
TONKIN= E TO NE 4-5. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA UP TO 2 M. =
DANANG= SE 4-5. DOWN TO 2000 M IN SCT SQUALLY 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 23:30 HKT 25/Apr/2018

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 11:30 p.m. on 25 April 2018

    Warnings:
    Strong winds in Hong Kong adjacent waters, 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 force 5, occasionally force 6.
    Isolated showers and thunderstorms.
    Moderate to rough seas.

    Nan'ao and Shanwei:
    East to northeast force 5 to 6.
    Isolated showers and thunderstorms.
    Moderate to rough seas.

    South of Hong Kong:
    East force 5 to 6.
    Isolated squally showers and thunderstorms.
    Moderate to rough seas.

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

    Outlook for the next 48 hours
    East to southeasterly winds of force 5 to 6. Isolated showers and thunderstorms.

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

    Waglan Island Wind east force 5
      Visibility 12 Kilometres

    Shantou Wind east-northeast force 2
      Visibility 17 Kilometres

    Huangmaozhou Wind east force 5

    Macau Wind east force 2
      Visibility 4000 Metres in mist

    Xisha Wind east-northeast force 1
      Visibility 25 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
  • Tidal Information

    • WEATHER FORECAST FOR LOCAL AVIATION
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    Weather Forecast for Local Aviation

    Bulletin issued at 01:30 HKT 26/APR/2018
    (Next update at 9:00-9:30 HKT 26/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
       OFFSHORE:  090/15-20                            23-21
   B.   2000 FT:  090/15-20                            19
   C.   5000 FT:  270/10                               17
   D.  10000 FT:  290/10                               10
   E.  18000 FT:  250/15                               MS5
   F.  24000 FT:  230/20                               MS15
   G.  30000 FT:  250/20                               MS29
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      CLOUDY WITH A FEW SHOWERS.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1500 FT  SCT 3500 FT  BKN 8000 FT. TEMPO
      FEW CB 800 FT SCT 1500 FT BKN 4000FT.
   K. VISIBILITY    : 7 KM.  TEMPO 4000 M IN SHOWERS.
   L. 0 DEG. C LEVEL: 16000 FT      10 DEG. C LEVEL(S) : 10000 FT
   M. TURBULENCE    : MOD AT LOW LEVELS
   N. SEA STATE     : 2.0-2.5 M     SEA TEMPERATURE    : 23 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE EASTERLY WINDS.  MAINLY CLOUDY WITH A
     FEW ISOLATED SHOWERS.=

    ===================================================================
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 13:40 HKT on 25 Apr 18

    VHHK SIGMET 1 VALID 250145/250545 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N2042 E11518 - N2012 E11524 - N1900 E11154 - N1930 E11130 - N2130 E11130 - N2130 E11148 - N2042 E11518 TOP FL420 MOV E 10KT NC= VHHK SIGMET 3 VALID 250540/250940 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N2106 E11336 - N2042 E11518 - N2000 E11518 - N1942 E11130 - N2130 E11130 - N2218 E11330 - N2106 E11336 TOP FL370 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 26/Apr/2018 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     24.7 C
Minimum Air Temperature                     23.3 C
Grass Minimum Temperature                   22.4 C
Relative Humidity                        72 - 84 Percent
Rainfall                                      Trace 
Total rainfall since 1st January           117.1 mm
Against an average of                      308.2 mm

Other Stations                Min                  Max
King's Park                  22.7 C               24.2 C
Wong Chuk Hang               21.9 C               24.2 C
Ta Kwu Ling                  20.9 C               24.1 C
Lau Fau Shan                 21.2 C               23.6 C
Tai Po                       21.5 C               23.2 C
Sha Tin                      22.8 C               24.2 C
Tuen Mun                     21.8 C               24.1 C
Tseung Kwan O                21.3 C               23.4 C
Sai Kung                     22.6 C               24.3 C
Cheung Chau                  21.0 C               22.6 C
Chek Lap Kok                 23.1 C               25.7 C
Tsing Yi                     22.5 C               24.3 C
Shek Kong                    22.0 C               24.1 C
Tsuen Wan Ho Koon            20.7 C               22.7 C
Tsuen Wan Shing Mun Valley   21.4 C               23.7 C
Hong Kong Park               22.1 C               23.7 C
Shau Kei Wan                 21.3 C               23.9 C
Kowloon City                 22.4 C               23.8 C
Happy Valley                 22.2 C               24.2 C
Wong Tai Sin                 22.4 C               24.0 C
Stanley                      22.2 C               23.6 C
Kwun Tong                    22.5 C               24.3 C
Sham Shui Po                 22.8 C               24.4 C
Kai Tak Runway Park          22.5 C               24.7 C
Yuen Long Park               22.0 C               24.2 C
Tai Mei Tuk               22.0 C               23.5 C

Duration of sunshine (King's Park):              0.0 H
The mean UV index recorded at King's Park yesterday was 0.9,
the UV intensity was Low.
The maximum UV index for yesterday was 2.
Sea surface temperature (Waglan Island):        23.2 C 

Yesterday's (25 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 25 Apr
     2003copy right image | Important notices | Privacy policy Last revision date: <26 Apr 2018> 

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