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Bulletin issued at 18:21 HKT 09/Jul/2018

At 6 p.m. at the Hong Kong Observatory the air temperature was 29 degrees Celsius and the relative humidity 84 per cent.
During the past hour the mean UV Index recorded at King's Park was 0.4. The intensity of UV radiation was low.

Please be reminded that:

The Thunderstorm Warning has been issued. It will remain effective until 7:00 p.m. today. Isolated thunderstorms are expected to occur over Hong Kong.

The air temperatures at other places were:

King's Park 29 degrees;
Wong Chuk Hang 27 degrees;
Ta Kwu Ling 30 degrees;
Lau Fau Shan 30 degrees;
Tai Po 29 degrees;
Sha Tin 30 degrees;
Tuen Mun 30 degrees;
Tseung Kwan O 29 degrees;
Sai Kung 29 degrees;
Cheung Chau 28 degrees;
Chek Lap Kok 30 degrees;
Tsing Yi 30 degrees;
Shek Kong 30 degrees;
Tsuen Wan Ho Koon 28 degrees;
Tsuen Wan Shing Mun Valley 29 degrees;
Hong Kong Park 27 degrees;
Shau Kei Wan 28 degrees;
Kowloon City 29 degrees;
Happy Valley 28 degrees;
Wong Tai Sin 29 degrees;
Stanley 25 degrees;
Kwun Tong 29 degrees;
Sham Shui Po 30 degrees;
Kai Tak Runway Park 29 degrees;
Yuen Long Park 30 degrees;
Tai Mei Tuk 29 degrees.

Between 4:45 and 5:45 p.m., the rainfall recorded in various regions were:

Southern District 1 to 9 mm;
Eastern District 0 to 4 mm;
Central & Western District 1 to 4 mm;
Wan Chai 2 mm;
Islands District 0 to 1 mm;
Kowloon City 0 to 1 mm.


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


Climatological Information for 9 Jul

Regional Weather in Hong Kong

Information on Tropical Cyclones

Hong Kong Climatology


Local Weather Forecast
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Automatic Regional Weather Forecast in Hong Kong & Pearl River Delta Region

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Bulletin updated at 17:55 HKT 09/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 northern part of the South China Sea and the coast of Guangdong.

At 4 p.m., Super Typhoon Maria was centred about 1060 kilometres east-southeast of Taibei. It is forecast to move west-northwest at about 30 kilometres per hour in the general direction of the vicinity of the northern part of Taiwan.

Weather forecast for tonight and tomorrow

Mainly cloudy. A few showers and isolated thunderstorms tonight. The minimum temperature will be about 28 degrees. Becoming fine and it will be hot tomorrow. The maximum temperature will be around 32 degrees in the urban areas, and a couple of degrees higher in the New Territories. Moderate east to northeasterly winds, fresh at first.

Outlook : Very hot with haze on Wednesday. The weather will be unsettled in the following few days.


(The above forecast period is valid up to 23:59 HKT tomorrow, 10/07/2018; 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 09:00 HKT 09/Jul/2018

GALE WARNING AREAS: BASHI AND BALINTANG.

GENERAL SITUATION AT 082100 UTC:
AN EASTERLY AIRSTREAM IS GENERALLY AFFECTING THE FORECAST AREAS. SUPER TYPHOON MARIA (1808) 915 HPA 21N 134E WNW 14KT INTST NC.

MARINE FORECAST FOR 24 HOURS FROM 090100 UTC:

HONG KONG= E 5-6. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 2-3 M. SWELL S UP TO 2 M. TEMP 31-28 C. =
KWANGTUNG= E TO SE 5-6. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 2-3 M. SWELL S 2 M. =
TAIWAN STRAIT= E TO NE 6-7, N 7 LATER. ISOL SHOWERS AND TS. SEA 3-4 M. SWELL S 2 M, NE UP TO 3 M LATER. =
BASHI= E TO NE 6-7, NW 8 LATER. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 3-4 M, 6 M LATER. SWELL S 2 M, E TO NE 2-3 M. =
PRATAS= E TO SE 5-6. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 2-3 M. SWELL S 2 M, E 2 M. =
BALINTANG= E TO NE 6-7, NW UP TO 8 LATER. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 3-4 M, UP TO 6 M LATER. SWELL S 2 M, E TO NE 2-3 M. =
SCARBOROUGH= SE 4-5, OCNL 6. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 3 M. SWELL S TO SW 2-3 M. =
PARACEL= SE 4-5, OCNL 6. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 3 M. SWELL S TO SW 2-3 M. =
TONKIN= E 4-5. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 2 M. SWELL S UP TO 2 M. =
DANANG= SE 4-5. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 2 M. SWELL S 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 09/Jul/2018

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 4:30 p.m. on 09 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 northeast force 5 to 6.
    Isolated squally showers and thunderstorms.
    Moderate to rough seas.

    Nan'ao, Shanwei and South of Hong Kong:
    East force 6, occasionally force 7.
    Isolated squally showers and thunderstorms.
    Rough seas.

    Shangchuan Dao:
    East force 5 to 6.
    Isolated squally showers and thunderstorms.
    Moderate to rough seas.

    Outlook for the next 48 hours
    Easterly winds of force 5 to 6, becoming southwesterly winds of force 7 to 8 in east. Isolated heavy squally showers and thunderstorms.

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

    Waglan Island Wind east force 4
      Visibility 19 Kilometres

    Shantou Wind east-southeast force 2
      Visibility 30 Kilometres

    Dongsha Wind east force 4
      Visibility 9 Kilometres in rain

    Huangmaozhou Wind east force 6

    Macau Wind east force 3
      Visibility 28 Kilometres

    Xisha Wind northwest force 2
      Visibility 30 Kilometres

  • Explanation of Seas or Sea Waves
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  • Visibility Readings in Hong Kong Waters
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    • WEATHER FORECAST FOR LOCAL AVIATION
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    Weather Forecast for Local Aviation

    Bulletin issued at 17:30 HKT 09/JUL/2018
    (Next update at 01:30 HKT 10/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
     SHOWERS TO THE COAST OF GUANGDONG.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1800 TO 0400 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  090/10-15
                  TEMPO 110/20G30 IN TS
       OFFSHORE:  090/15-20, OCNL 25                   32-28
   B.   2000 FT:  110/20-25                            23
   C.   5000 FT:  110/25-30                            19
   D.  10000 FT:  100/25                               11
   E.  18000 FT:  100/20                               MS3
   F.  24000 FT:  100/25                               MS12
   G.  30000 FT:  090/20                               MS25
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL
   I. WEATHER       : 
      MAINLY CLOUDY WITH A FEW SHOWERS. ISOLATED
      THUNDERSTORMS AT FIRST.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1500 FT  SCT 3000 FT.  TEMPO FEW CB 1000 FT
      SCT 2000 FT  BKN 4000 FT.
   K. VISIBILITY    : 10 KM. TEMPO 3500 M IN SHOWERS. 
                      TEMPO 2000 M IN TS.
   L. 0 DEG. C LEVEL: 16500 FT      10 DEG. C LEVEL(S) : 11200 FT
   M. TURBULENCE    : MOD TO SEV.
   N. SEA STATE     : 2.0-3.0 M     SEA TEMPERATURE    : 27 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE EASTERLY WINDS, FRESH OFFSHORE. MAINLY
     FINE APART FROM A FEW ISOLATED SHOWERS AT FIRST.=

    ===================================================================
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 16:28 HKT on 09 Jul 18

    VHHK SIGMET 2 VALID 090430/090830 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N1812 E11512 - N1642 E11400 - N1830 E11224 - N1830 E11424 - N1812 E11512 TOP FL400 MOV W 10KT NC= VHHK SIGMET 3 VALID 090830/091230 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N1812 E11512 - N1642 E11400 - N1830 E11224 - N1830 E11424 - N1812 E11512 TOP FL400 MOV W 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 09/Jul/2018 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     30.6 C
Minimum Air Temperature                     26.7 C
Grass Minimum Temperature                   26.3 C
Relative Humidity                        80 - 95 Percent
Rainfall                                    14.4 mm 
Total rainfall since 1st January           684.9 mm
Against an average of                     1184.0 mm

Other Stations                Min                  Max
King's Park                  26.9 C               31.2 C
Wong Chuk Hang               26.3 C               31.5 C
Ta Kwu Ling                  26.1 C               32.6 C
Lau Fau Shan                 25.9 C               31.7 C
Tai Po                       26.1 C               30.0 C
Sha Tin                      25.5 C               32.0 C
Tuen Mun                     26.5 C               31.5 C
Tseung Kwan O                25.4 C               30.9 C
Sai Kung                     25.3 C               31.2 C
Cheung Chau                  25.5 C               31.9 C
Chek Lap Kok                 27.4 C               33.3 C
Tsing Yi                     26.1 C               31.6 C
Shek Kong                    26.3 C               32.8 C
Tsuen Wan Ho Koon            25.5 C               29.0 C
Tsuen Wan Shing Mun Valley   25.9 C               31.6 C
Hong Kong Park               26.1 C               30.6 C
Shau Kei Wan                 26.6 C               32.2 C
Kowloon City                 26.6 C               31.5 C
Happy Valley                 26.7 C               32.3 C
Wong Tai Sin                 26.5 C               31.3 C
Stanley                      25.4 C               31.3 C
Kwun Tong                    26.4 C               31.5 C
Sham Shui Po                 26.4 C               32.0 C
Kai Tak Runway Park          26.9 C               31.1 C
Yuen Long Park               25.8 C               32.7 C
Tai Mei Tuk               26.3 C               32.6 C

Duration of sunshine (King's Park):              3.5 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.
 

Yesterday's (08 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                         0.11
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 08 Jul
     2003copy right image | Important notices | Privacy policy Last revision date: <09 Jul 2018> 

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