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Weather Information for South China Coastal Waters

Bulletin issued at 16:02 HKT 08/May/2018

At 4 p.m. at the Hong Kong Observatory the air temperature was 27 degrees Celsius and the relative humidity 83 per cent.
During the past hour the mean UV Index recorded at King's Park was 2. The intensity of UV radiation was low.

Please be reminded that:

The Thunderstorm Warning has been issued. It will remain effective until 5:00 p.m. today. Isolated thunderstorms are expected to occur over Lantau, Southern Waters and Islands of Hong Kong.

The air temperatures at other places were:

King's Park 27 degrees;
Wong Chuk Hang 26 degrees;
Ta Kwu Ling 28 degrees;
Lau Fau Shan 27 degrees;
Tai Po 26 degrees;
Sha Tin 28 degrees;
Tuen Mun 27 degrees;
Tseung Kwan O 25 degrees;
Sai Kung 26 degrees;
Cheung Chau 25 degrees;
Chek Lap Kok 27 degrees;
Tsing Yi 26 degrees;
Shek Kong 28 degrees;
Tsuen Wan Ho Koon 25 degrees;
Tsuen Wan Shing Mun Valley 27 degrees;
Hong Kong Park 26 degrees;
Shau Kei Wan 26 degrees;
Kowloon City 27 degrees;
Happy Valley 27 degrees;
Wong Tai Sin 27 degrees;
Stanley 25 degrees;
Kwun Tong 27 degrees;
Sham Shui Po 27 degrees;
Kai Tak Runway Park 26 degrees;
Yuen Long Park 28 degrees;
Tai Mei Tuk 27 degrees.

Between 2:45 and 3:45 p.m., lightning was detected within Lantau.


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


Climatological Information for 8 May

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 16:15 HKT 08/May/2018

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

A trough of low pressure is lingering around the coast of Guangdong, bringing showers and thunderstorms to the region.

Weather forecast for tonight and tomorrow

Cloudy with occasional showers and thunderstorms. Showers will be heavier at times during the day tomorrow. Temperatures will range between 23 and 26 degrees. Light to moderate easterly winds, strengthening during the day tomorrow.

Outlook : There will still be showers on Thursday. Showers will ease off gradually in the latter part of this week.


(The above forecast period is valid up to 23:59 HKT tomorrow, 09/05/2018; 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 08/May/2018

N0 WARNING.

GENERAL SITUATION AT 072100 UTC:
TROUGH 21N 108E 25N 121E 33N 138E QSTNR.

MARINE FORECAST FOR 24 HOURS FROM 080100 UTC:

HONG KONG= E 4. DOWN TO 1000 M IN SCT HEAVY SQUALLY SHOWERS AND TS. TEMP 27-24 C. =
KWANGTUNG= E TO SE 4-5. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA UP TO 2 M. =
TAIWAN STRAIT= SW 5, BEC NE 5-6. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS AT FIRST. SEA 2-3 M. =
BASHI= SW 4-5, E 5 LATER. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 2 M. =
PRATAS= SW 4-5. ISOL SHOWERS AND TS. SEA UP TO 2 M. =
BALINTANG= SW 4-5, E 5 LATER. ISOL SHOWERS AND TS. SEA UP TO 2 M. =
SCARBOROUGH= S TO SW 4, OCNL 5. ISOL SHOWERS AND TS. SEA UP TO 2 M. =
PARACEL= S TO SW 4-5. ISOL SHOWERS AND TS. SEA UP TO 2 M. =
TONKIN= E TO NE 4, OCNL 5. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 2 M. =
DANANG= S 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.


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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 16:30 HKT 08/May/2018

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 4:30 p.m. on 08 May 2018

    Warnings:
    Strong winds in all areas.

    Weather Situation:
    A trough of low pressure is bringing unsettled weather to the south China coastal waters.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    East force 4, becoming force 5 to 6 later.
    Scattered squally showers and thunderstorms.
    Moderate seas, becoming rough later.

    Nan'ao:
    East to northeast force 4 to 5, becoming force 6 to 7.
    Scattered squally showers and thunderstorms.
    Moderate seas, becoming rough.

    Shanwei and South of Hong Kong:
    East force 4 to 5, becoming force 6 to 7 later.
    Scattered squally showers and thunderstorms.
    Moderate seas, becoming rough later.

    Shangchuan Dao:
    East to southeast force 4 to 5, up to force 6 later.
    Scattered squally showers and thunderstorms.
    Moderate seas, becoming rough later.

    Outlook for the next 48 hours
    East to southeasterly winds of force 5 to 6, up to force 7 in east at first. Isolated squally showers and thunderstorms.

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

    Waglan Island Wind calm
      Visibility 40 Kilometres

    Shantou Wind west force 1
      Visibility 25 Kilometres

    Huangmaozhou Wind east-northeast force 4

    Macau Wind north-northeast force 1
      Visibility 19 Kilometres

    Xisha Wind south-southwest force 3
      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 12:30 HKT 08/MAY/2018
    (Next update at 17:30 HKT 08/MAY/2018)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     ISOL CUNIM/TS AND ASSOCIATED HAZARDS.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     A TROUGH OF LOW PRESSURE IS BRINGING UNSETTLED
     WEATHER TO THE SOUTH CHINA COASTAL AREAS.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1300 TO 2300 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  040/5-10
                  TEMPO VRB/20G35 IN TS
       OFFSHORE:  040/10-15                            28-24
   B.   2000 FT:  020/10-15                            21
   C.   5000 FT:  250/20                               19
   D.  10000 FT:  250/20                               10
   E.  18000 FT:  280/35                               MS5
   F.  24000 FT:  270/45                               MS15
   G.  30000 FT:  270/40                               MS27
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      MAINLY CLOUDY WITH OCCASIONAL SHOWERS. SHOWERS
      WILL BE HEAVY AT TIMES.  ISOLATED THUNDERSTORMS.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1000 FT  SCT 2500 FT  BKN 8000 FT.  TEMPO
      FEW 600 FT  SCT CB 1200 FT  BKN 4000 FT.
   K. VISIBILITY    : 10 KM.  TEMPO 3000 M IN SHOWERS.  TEMPO 1500 M IN TS.
   L. 0 DEG. C LEVEL: 15000 FT      10 DEG. C LEVEL(S) : 10000 FT
   M. TURBULENCE    : MOD TO SEV NEAR CUNIM/TS
   N. SEA STATE     : 1.0-1.5 M     SEA TEMPERATURE    : 25 DEG
IV.  FURTHER OUTLOOK: 
     LIGHT TO MODERATE SOUTHERLY WINDS. CLOUDY TO
     OVERCAST WITH SHOWERS AND THUNDERSTORMS. SHOWERS
     WILL BE HEAVY AT TIMES.=

    ===================================================================
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 15:50 HKT on 08 May 18

    VHHK SIGMET 2 VALID 080400/080800 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N2148 E11724 - N1924 E11542 - N2048 E11130 - N2130 E11130 - N2248 E11442 - N2148 E11724 TOP FL450 MOV ESE 20KT NC= VHHK SIGMET 4 VALID 080800/081200 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N2218 E11730 - N2106 E11730 - N1954 E11518 - N2100 E11130 - N2130 E11130 - N2254 E11454 - N2218 E11730 TOP FL450 MOV ESE 20KT 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 08/May/2018 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     29.6 C
Minimum Air Temperature                     24.4 C
Grass Minimum Temperature                   23.7 C
Relative Humidity                        78 - 88 Percent
Rainfall                                     6.7 mm 
Total rainfall since 1st January           124.1 mm
Against an average of                      397.9 mm

Other Stations                Min                  Max
King's Park                  23.4 C               30.4 C
Wong Chuk Hang               26.0 C               28.3 C
Ta Kwu Ling                  22.7 C               32.2 C
Tai Po                       22.6 C               29.6 C
Sha Tin                      23.3 C               29.9 C
Tuen Mun                     23.6 C               31.3 C
Tseung Kwan O                23.4 C               29.0 C
Sai Kung                     23.4 C               30.2 C
Cheung Chau                  24.3 C               30.1 C
Chek Lap Kok                 23.7 C               33.3 C
Tsing Yi                     23.5 C               28.0 C
Shek Kong                    23.3 C               31.3 C
Tsuen Wan Ho Koon            22.5 C               26.4 C
Tsuen Wan Shing Mun Valley   23.1 C               27.9 C
Hong Kong Park               24.4 C               28.3 C
Shau Kei Wan                 23.8 C               28.2 C
Kowloon City                 22.5 C               30.7 C
Happy Valley                 25.7 C               28.5 C
Wong Tai Sin                 22.8 C               29.7 C
Stanley                      25.6 C               29.8 C
Kwun Tong                    23.8 C               29.0 C
Sham Shui Po                 22.9 C               29.7 C
Kai Tak Runway Park          24.0 C               29.8 C
Yuen Long Park               23.6 C               32.4 C
Tai Mei Tuk               22.9 C               29.0 C

Duration of sunshine (King's Park):              2.6 H
The mean UV index recorded at King's Park yesterday was 3,
the UV intensity was Moderate.
The maximum UV index for yesterday was 9.
Sea surface temperature (Waglan Island):        24.7 C 

Yesterday's (07 May 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                           0.11
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 07 May
     2003copy right image | Important notices | Privacy policy Last revision date: <08 May 2018> 

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