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Bulletin issued at 21:02 HKT 13/Jul/2018

At 9 p.m. at the Hong Kong Observatory the air temperature was 26 degrees Celsius and the relative humidity 93 per cent.

The air temperatures at other places were:

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

Sai Kung 0 to 2 mm;
Tai Po 0 to 2 mm;
North District 0 to 1 mm;
Sha Tin 0 to 1 mm.


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


Climatological Information for 13 Jul

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 20:45 HKT 13/Jul/2018

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

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 a few showers. Showers will be heavy at times with a few squally thunderstorms tomorrow. Temperatures will range between 25 and 28 degrees. Moderate to fresh east to southeasterly winds, occasionally strong offshore tomorrow.

Outlook : Still showery with squally thunderstorms on Sunday. Weather improving gradually in the following couple of days.


(The above forecast period is valid up to 23:59 HKT tomorrow, 14/07/2018; 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 21:25 HKT 13/Jul/2018

N0 WARNING.

GENERAL SITUATION AT 130900 UTC:
TROUGH 19N 108E 20N 118E QSTNR.

MARINE FORECAST FOR 24 HOURS FROM 131325 UTC:

HONG KONG= E TO SE 5-6. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 2-3 M. TEMP 25-28 C. =
KWANGTUNG= E TO SE 5-6, OCNL 7 IN E. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 2-3 M, UP TO 4 M IN E. SWELL S TO SW UP TO 2 M. =
TAIWAN STRAIT= E TO NE 5-6. ISOL SHOWERS AND TS. SEA 2-3 M. SWELL SW 2 M. =
BASHI= E 5-6. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 2-3 M. SWELL SW 2 M. =
PRATAS= E 5-6, OCNL 7. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA UP TO 4 M. SWELL S TO SW 2 M. =
BALINTANG= E 5-6. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 2-3 M. SWELL SW 2 M. =
SCARBOROUGH= S TO SW 4-5, OCNL 6. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA UP TO 3 M. SWELL S TO SW 2 M. =
PARACEL= S TO SW 4-5, OCNL 6. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA UP TO 3 M. SWELL S TO SW 2 M. =
TONKIN= E TO SE 4-5. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA UP TO 2 M. =
DANANG= W TO SW 4-5, OCNL 6. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA UP TO 3 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 19:30 HKT 13/Jul/2018

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 7:30 p.m. on 13 July 2018

    Warnings:
    Strong winds in all areas.

    Weather Situation:
    A broad 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 to southeast force 5 to 6.
    Scattered squally showers and thunderstorms.
    Moderate to rough seas.

    Nan'ao and Shanwei:
    East to southeast force 5 to 6, occasionally force 7.
    Scattered squally showers and thunderstorms.
    Moderate to rough seas.

    South of Hong Kong and Shangchuan Dao:
    East to southeast force 5 to 6.
    Scattered squally showers and thunderstorms.
    Moderate to rough seas.

    Outlook for the next 48 hours
    East to southeasterly winds of force 5 to 6, occasionally force 7. Scattered squally showers and thunderstorms.

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

    Waglan Island Wind east force 4
      Visibility 30 Kilometres

    Shantou Wind east force 2
      Visibility 30 Kilometres

    Huangmaozhou Wind east-southeast force 4

    Macau Wind east force 3
      Visibility 35 Kilometres

    Xisha Wind south force 2
      Visibility 30 Kilometres

  • Explanation of Seas or Sea Waves
  • Explanation of Swells
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  • Map showing forecast areas
  • Tidal Information

    • WEATHER FORECAST FOR LOCAL AVIATION
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    Weather Forecast for Local Aviation

    Bulletin issued at 17:30 HKT 13/JUL/2018
    (Next update at 01:30 HKT 14/JUL/2018)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     STRONG WINDS AND SEV TURB.
     ISOL CUNIM/TS AND ASSOCIATED HAZARDS.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     A BROAD TROUGH OF LOW PRESSURE IS BRINGING
     UNSETTLED WEATHER TO THE SOUTH CHINA COASTAL
     AREAS.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1800 TO 0400 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  100/10-15
                  TEMPO VRB/15G25 IN TS
       OFFSHORE:  110/15-20, OCNL 25                   29-26
   B.   2000 FT:  130/20-25                            22
   C.   5000 FT:  120/20                               19
   D.  10000 FT:  120/20                               11
   E.  18000 FT:  110/25                               MS2
   F.  24000 FT:  120/25                               MS11
   G.  30000 FT:  110/15                               MS24
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      CLOUDY WITH SHOWERS AND A FEW SQUALLY
      THUNDERSTORMS.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1000 FT  SCT 2500 FT.  
      TEMPO FEW CB 800 FT  SCT 1500 FT  BKN 4000 FT.
   K. VISIBILITY    : 9 KM.  TEMPO 3500 M IN SHOWERS.  
                      TEMPO 2000 M IN TS.
   L. 0 DEG. C LEVEL: 17000 FT      10 DEG. C LEVEL(S) : 10800 FT
   M. TURBULENCE    : MOD TO SEV.
   N. SEA STATE     : 2.0-3.0 M     SEA TEMPERATURE    : 27 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE TO FRESH EAST TO SOUTHEASTERLY WINDS,
     OCCASIONALLY STRONG OFFSHORE AND ON HIGH GROUND.
     CLOUDY WITH SHOWERS AND A FEW SQUALLY
     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 17:45 HKT on 13 Jul 18

    VHHK SIGMET 3 VALID 130550/130950 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N2336 E11730 - N2218 E11730 - N2130 E11430 - N2212 E11312 - N2218 E11330 - N2354 E11724 - N2336 E11730 TOP FL450 MOV NW 10KT NC= VHHK SIGMET 4 VALID 130715/131115 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N1954 E11418 - N2006 E11648 - N1824 E11524 - N1912 E11142 - N1930 E11130 - N2112 E11130 - N1954 E11418 TOP FL450 MOV W 10KT NC= VHHK SIGMET 5 VALID 130950/131350 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N2342 E11730 - N2242 E11730 - N2054 E11318 - N2136 E11142 - N2354 E11718 - N2342 E11730 TOP FL450 MOV NW 10KT 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 13/Jul/2018 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     33.4 C
Minimum Air Temperature                     28.3 C
Grass Minimum Temperature                   26.8 C
Relative Humidity                        65 - 85 Percent
Rainfall                                      Trace 
Total rainfall since 1st January           697.5 mm
Against an average of                     1225.9 mm

Other Stations                Min                  Max
King's Park                  27.0 C               32.6 C
Wong Chuk Hang               26.8 C               32.4 C
Ta Kwu Ling                  26.4 C               34.0 C
Lau Fau Shan                 26.5 C               34.2 C
Tai Po                       25.9 C               31.8 C
Sha Tin                      27.1 C               32.9 C
Tuen Mun                     27.6 C               32.2 C
Tseung Kwan O                26.5 C               32.3 C
Sai Kung                     27.6 C               31.8 C
Cheung Chau                  26.6 C               31.9 C
Chek Lap Kok                 28.4 C               34.4 C
Tsing Yi                     26.5 C               34.4 C
Shek Kong                    27.2 C               33.8 C
Tsuen Wan Ho Koon            25.9 C               31.7 C
Tsuen Wan Shing Mun Valley   26.9 C               32.4 C
Hong Kong Park               26.7 C               32.9 C
Shau Kei Wan                 26.7 C               31.1 C
Kowloon City                 26.2 C               33.1 C
Happy Valley                 27.9 C               33.8 C
Wong Tai Sin                 26.9 C               32.5 C
Stanley                      26.9 C               31.6 C
Kwun Tong                    26.8 C               31.6 C
Sham Shui Po                 26.9 C               33.1 C
Kai Tak Runway Park          27.5 C               31.3 C
Yuen Long Park               26.6 C               34.3 C
Tai Mei Tuk               26.5 C               33.1 C

Duration of sunshine (King's Park):              8.5 H
The mean UV index recorded at King's Park yesterday was 5,
the UV intensity was Moderate.
The maximum UV index for yesterday was 10.
 

Yesterday's (12 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                           0.09
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                          0.08
King's Park                         0.14
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 12 Jul
     2003copy right image | Important notices | Privacy policy Last revision date: <13 Jul 2018> 

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