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Weather Information for South China Coastal Waters

Bulletin issued at 21:02 HKT 15/Jul/2018

At 9 p.m. at the Hong Kong Observatory the air temperature was 26 degrees Celsius and the relative humidity 89 per cent.

Strong winds are expected from the east. The public should beware of the possible danger brought by rough seas.

Please be reminded that:

The Strong Monsoon Signal has been issued.

The air temperatures at other places were:

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

Between 7:45 and 8:45 p.m., the rainfall recorded in various regions were:

Yuen Long 1 to 11 mm;
North District 0 to 8 mm;
Tai Po 0 to 5 mm;
Sha Tin 0 to 3 mm;
Tuen Mun 1 to 3 mm;
Tsuen Wan 0 to 2 mm;
Wong Tai Sin 0 to 1 mm;
Wan Chai 0 to 1 mm;
Kwai Tsing 0 to 1 mm;
Central & Western District 0 to 1 mm;
Islands District 0 to 1 mm;
Eastern District 0 to 1 mm;
Sai Kung 0 to 1 mm;
Kwun Tong 0 to 1 mm.


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


Climatological Information for 15 Jul

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

Current Weather | Regional Temperature Forecast in HK |  9-day Weather Forecast
UV Index Forecast |  Weather Information for South China Coastal Waters

Bulletin updated at 20:45 HKT 15/Jul/2018

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

A strong easterly airstream is affecting the south China coast. Meanwhile, a broad trough of low pressure is bringing showers to the coast of Guangdong and the northern part of the South China Sea.

Weather forecast for tonight and tomorrow

Cloudy with showers. A few squally thunderstorms at first. Showers will ease off during the day tomorrow and there will be sunny intervals. Temperatures will range between 25 and 30 degrees. Moderate to fresh easterly winds, strong offshore and on high ground at first.

Outlook : Sunny periods in the following couple of days.


(The above forecast period is valid up to 23:59 HKT tomorrow, 16/07/2018; 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 15/Jul/2018

GALE WARNING AREAS: HONG KONG, KWANGTUNG, BASHI AND BALINTANG.

GENERAL SITUATION AT 150900 UTC:
AN INTENSE EASTERLY AIRSTREAM IS GENERALLY AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 151300 UTC:

HONG KONG= E 6-7, OCNL 8. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA UP TO 6 M. SWELL E 2 M. TEMP 26-30 C. =
KWANGTUNG= E TO SE 6-7, OCNL 8. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA UP TO 6 M. SWELL E 2 M, SW 2 M. =
TAIWAN STRAIT= NE 6-7. ISOL SHOWERS AND TS. SEA 3-4 M. SWELL NE 2 M. =
BASHI= E TO NE 6-7, OCNL 8. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 6 M. SWELL E 2 M, SW 2 M. =
PRATAS= E 6-7. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 3-4 M. SWELL E 2 M, SW 2 M. =
BALINTANG= E TO NE 6-7, OCNL 8. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 6 M. SWELL E 2 M, SW 2 M. =
SCARBOROUGH= S TO SE 5-6. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 2-3 M. SWELL SW 2-3 M. =
PARACEL= S TO SE 5-6. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 2-3 M. SWELL SW 2-3 M. =
TONKIN= E TO NE 5-6, OCNL 7. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA UP TO 4 M. SWELL NE 2 M. =
DANANG= S TO SW 6-7. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 3-4 M. SWELL S TO SW 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 21:30 HKT 15/Jul/2018

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 9:30 p.m. on 15 July 2018

    Warnings:
    Gale force winds in Hong Kong adjacent waters, Nan'ao, Shanwei and south of Hong Kong. Strong winds in Shangchuan Dao.

    Weather Situation:
    An intense easterly airstream is affecting the south China coastal waters. Meanwhile, a broad trough of low pressure is bringing unsettled weather to the region.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    East force 6 to 7, occasionally force 8.
    Scattered squally showers and thunderstorms.
    Rough to very rough seas.

    Nan'ao, Shanwei and South of Hong Kong:
    East force 6 to 7, occasionally force 8.
    Scattered squally showers and thunderstorms.
    Rough to very rough seas.

    Shangchuan Dao:
    East to southeast force 6 to 7.
    Scattered squally showers and thunderstorms.
    Rough seas.

    Outlook for the next 48 hours
    Easterly winds of force 6 to 7, occasionally force 8. Scattered squally showers and thunderstorms.

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

    Waglan Island Wind east force 6
      Visibility 15 Kilometres

    Shantou Wind east-northeast force 3
      Visibility 30 Kilometres

    Dongsha Wind east force 5
      Visibility 9 Kilometres in rain

    Huangmaozhou Wind east-southeast force 8

    Macau Wind east force 4
      Visibility 10 Kilometres

    Xisha Wind west force 4
      Visibility 9 Kilometres in showers

  • 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 17:30 HKT 15/JUL/2018
    (Next update at 01:30 HKT 16/JUL/2018)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     SEV TURB AND SEV GUSTS.  GALE FORCE WINDS. 
     ISOL CUNIM/TS AND ASSOCIATED HAZARDS.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     AN INTENSE EASTERLY AIRSTREAM IS AFFECTING THE
     SOUTH CHINA COASTAL AREASS. MEANWHILE, A BROAD
     TROUGH OF LOW PRESSURE IS BRINGING UNSETTLED
     WEATHER TO THE REGION.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1800 TO 0400 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  100/15-20
                  TEMPO VRB/25G35 IN TS
       OFFSHORE:  100/25-30G40                         27-25
   B.   2000 FT:  100/30-35G45, OCNL 45G55             23
   C.   5000 FT:  110/35                               18
   D.  10000 FT:  120/20                               11
   E.  18000 FT:  100/20                               MS3
   F.  24000 FT:  110/10                               MS12
   G.  30000 FT:  100/10                               MS27
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      CLOUDY WITH SHOWERS. A FEW SQUALLY
      THUNDERSTORMS.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1200 FT  SCT 2500 FT.  TEMPO FEW CB 800 FT
      SCT 1500 FT  BKN 5000 FT.
   K. VISIBILITY    : 9  KM.  TEMPO 3000 M IN SHOWERS.  TEMPO 2000 M IN TS.
   L. 0 DEG. C LEVEL: 17000 FT      10 DEG. C LEVEL(S) : 12200 FT
   M. TURBULENCE    : MOD TO SEV
   N. SEA STATE     : 4.0-5.5 M     SEA TEMPERATURE    : 27 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE TO FRESH EAST TO SOUTHEASTERLY WINDS,
     STRONG OFFSHORE AND ON HIGH GROUND.  CLOUDY WITH
     SHOWERS. A FEW SQUALLY THUNDERSTORMS AT FIRST.
     SUNNY INTERVALS DURING THE DAY..=

    ===================================================================
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 17:55 HKT on 15 Jul 18

    VHHK SIGMET 2 VALID 150555/150955 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N2100 E11730 - N1830 E11530 - N1830 E11230 - N2030 E11130 - N2130 E11130 - N2300 E11600 - N2100 E11730 TOP FL440 MOV NW 10KT NC= VHHK SIGMET 3 VALID 150955/151355 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N2142 E11706 - N1948 E11606 - N2024 E11412 - N2024 E11218 - N2130 E11206 - N2224 E11530 - N2142 E11706 TOP FL440 STNR 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 15/Jul/2018 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     29.5 C
Minimum Air Temperature                     25.3 C
Grass Minimum Temperature                   24.7 C
Relative Humidity                        82 - 97 Percent
Rainfall                                    52.7 mm 
Total rainfall since 1st January           800.6 mm
Against an average of                     1246.9 mm

Other Stations                Min                  Max
King's Park                  25.0 C               29.3 C
Wong Chuk Hang               25.4 C               29.1 C
Ta Kwu Ling                  24.9 C               31.2 C
Lau Fau Shan                 24.4 C               29.3 C
Tai Po                       25.1 C               29.5 C
Sha Tin                      25.9 C               30.2 C
Tuen Mun                     25.2 C               29.4 C
Tseung Kwan O                24.8 C               29.1 C
Sai Kung                     25.6 C               29.8 C
Cheung Chau                  24.6 C               27.4 C
Chek Lap Kok                 25.4 C               29.6 C
Tsing Yi                     25.2 C               30.3 C
Shek Kong                    25.3 C               29.9 C
Tsuen Wan Ho Koon            24.1 C               27.2 C
Tsuen Wan Shing Mun Valley   25.0 C               29.1 C
Hong Kong Park               24.9 C               28.7 C
Shau Kei Wan                 24.3 C               29.2 C
Kowloon City                 25.0 C               29.6 C
Happy Valley                 26.0 C               30.2 C
Wong Tai Sin                 25.3 C               29.4 C
Stanley                      25.4 C               29.5 C
Kwun Tong                    25.2 C               29.3 C
Sham Shui Po                 25.4 C               30.6 C
Kai Tak Runway Park          25.2 C               29.6 C
Yuen Long Park               24.6 C               30.0 C
Tai Mei Tuk               24.5 C               29.7 C

Duration of sunshine (King's Park):              0.8 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):        27.6 C 

Yesterday's (14 Jul 2018) average ambient gamma radiation
dose rate taken outdoors in Hong Kong ranged from 0.08 to
0.14 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                             0.08
Kat O                               0.10
Yuen Ng Fan                         0.12
Tai Mei Tuk                         0.11
Sha Tau Kok                         0.10
Kwun Tong                           0.12
Sai Wan Ho                          0.09
King's Park                         0.14
Tsim Bei Tsui                       0.12
Cape D'Aguilar                      0.12
Chek Lap Kok                        0.13

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 14 Jul
     2003copy right image | Important notices | Privacy policy Last revision date: <15 Jul 2018> 

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