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Bulletin issued at 01:02 HKT 10/Jul/2018

At 1 a.m. at the Hong Kong Observatory the air temperature was 27 degrees Celsius and the relative humidity 91 per cent.

The air temperatures at other places were:

King's Park 27 degrees;
Wong Chuk Hang 27 degrees;
Ta Kwu Ling 27 degrees;
Lau Fau Shan 26 degrees;
Tai Po 28 degrees;
Sha Tin 28 degrees;
Tuen Mun 27 degrees;
Tseung Kwan O 27 degrees;
Sai Kung 28 degrees;
Cheung Chau 27 degrees;
Chek Lap Kok 29 degrees;
Tsing Yi 28 degrees;
Shek Kong 28 degrees;
Tsuen Wan Ho Koon 26 degrees;
Tsuen Wan Shing Mun Valley 28 degrees;
Hong Kong Park 26 degrees;
Shau Kei Wan 27 degrees;
Kowloon City 27 degrees;
Happy Valley 27 degrees;
Wong Tai Sin 28 degrees;
Stanley 28 degrees;
Kwun Tong 27 degrees;
Sham Shui Po 27 degrees;
Kai Tak Runway Park 28 degrees;
Yuen Long Park 28 degrees;
Tai Mei Tuk 27 degrees.

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

Southern District 0 to 1 mm;
Central & Western District 0 to 1 mm;
Eastern District 0 to 1 mm;
Wan Chai 0 to 1 mm.


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


Climatological Information for 10 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

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

Bulletin updated at 00:45 HKT 10/Jul/2018

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

A broad trough of low pressure brought showers to the northern part of the South China Sea and the coast of Guangdong yesterday. Locally, it was mainly cloudy with sunny intervals and a few showers. More than 10 millimetres of rainfall were recorded over many places.

At 11 p.m. last night, Super Typhoon Maria was centred about 830 kilometres east-southeast of Taibei. It is forecast to move west-northwest at about 30 kilometres per hour in the general direction of the northern part of Taiwan. The subsiding air in the outer circulation of Maria is expected to bring very hot weather to southeastern China today.

Weather forecast for Hong Kong

Mainly cloudy with isolated showers at first. The minimum temperature will be about 26 degrees. Becoming fine and hot during the day with a maximum temperature of 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 today, 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 21:00 HKT 09/Jul/2018

GALE WARNING AREAS: TAIWAN STRAIT, BASHI AND BALINTANG.

GENERAL SITUATION AT 090900 UTC:
AN EASTERLY AIRSTREAM IS GENERALLY AFFECTING THE FORECAST AREAS. SUPER TYPHOON MARIA (1808) 905 HPA 23N 131E WNW 15KT INTST NC.

MARINE FORECAST FOR 24 HOURS FROM 091300 UTC:

HONG KONG= E TO NE 5-6. ISOL SHOWERS AND TS. SEA 2-3 M. TEMP 28-32 C. =
KWANGTUNG= E TO NE 6-7. ISOL SHOWERS AND TS. SEA 3-4 M. SWELL S UP TO 2 M. =
TAIWAN STRAIT= E TO NE 6-7, N 8 LATER. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 3-4 M, 6 M LATER. SWELL NE UP TO 3 M LATER. =
BASHI= E TO NE 6-7, NW 8 LATER. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 3-4 M, 6 M LATER. SWELL E TO NE 2-3 M. =
PRATAS= E TO SE 5-6. ISOL SHOWERS AND TS. SEA 2-3 M. SWELL 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 E TO NE 2-3 M. =
SCARBOROUGH= S TO 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 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 M. =
TONKIN= E 4-5. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 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 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 09/Jul/2018

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 11:30 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.

    At 11 p.m., Super Typhoon Maria with maximum sustained winds of about 210 kilometres per hour near its centre was located near 23.2 degrees north, 129.4 degrees east. It is forecast to move west-northwest at about 30 kilometres per hour in the general direction of the northern part of Taiwan.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    East to northeast force 5 to 6.
    Isolated showers and thunderstorms.
    Moderate to rough seas.

    Nan'ao and Shanwei:
    East to northeast force 6 to 7.
    Isolated showers and thunderstorms.
    Rough seas.

    South of Hong Kong and Shangchuan Dao:
    East force 6, occasionally force 7.
    Isolated showers and thunderstorms.
    Rough seas.

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

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

    Waglan Island Wind east force 5
      Visibility 23 Kilometres

    Shantou Wind southeast force 2
      Visibility 30 Kilometres

    Dongsha Wind east force 4
      Visibility 9 Kilometres

    Huangmaozhou Wind southeast force 6

    Macau Wind east force 3
      Visibility 20 Kilometres

    Xisha Wind west-southwest force 4
      Visibility 23 Kilometres

  • Explanation of Seas or Sea Waves
  • Explanation of Swells
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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 01:30 HKT 10/JUL/2018
    (Next update at 9:00-9:30 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 0200 TO 1200 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  090/10-15
                  TEMPO 110/20G30 IN TS
       OFFSHORE:  090/15-20, OCNL 25                   27-32
   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:  080/25                               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) : 10600 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 AT
     FIRST. 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 10/Jul/2018 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     31.8 C
Minimum Air Temperature                     25.9 C
Grass Minimum Temperature                   25.9 C
Relative Humidity                        70 - 93 Percent
Rainfall                                    11.3 mm 
Total rainfall since 1st January           696.2 mm
Against an average of                     1191.9 mm

Other Stations                Min                  Max
King's Park                  25.4 C               30.8 C
Wong Chuk Hang               25.8 C               31.4 C
Ta Kwu Ling                  25.8 C               31.9 C
Lau Fau Shan                 25.1 C               31.9 C
Tai Po                       25.5 C               30.1 C
Sha Tin                      26.5 C               31.6 C
Tuen Mun                     26.3 C               32.7 C
Tseung Kwan O                24.7 C               31.4 C
Sai Kung                     25.6 C               30.3 C
Cheung Chau                  24.1 C               30.3 C
Chek Lap Kok                 27.6 C               33.8 C
Tsing Yi                     26.1 C               32.0 C
Shek Kong                    26.7 C               31.8 C
Tsuen Wan Ho Koon            25.1 C               30.3 C
Tsuen Wan Shing Mun Valley   26.0 C               30.6 C
Hong Kong Park               24.5 C               30.5 C
Shau Kei Wan                 24.3 C               29.8 C
Kowloon City                 25.2 C               31.4 C
Happy Valley                 25.4 C               31.9 C
Wong Tai Sin                 25.8 C               30.8 C
Stanley                      25.0 C               31.2 C
Kwun Tong                    25.5 C               30.6 C
Sham Shui Po                 26.0 C               32.3 C
Kai Tak Runway Park          25.1 C               30.4 C
Yuen Long Park               26.7 C               32.8 C
Tai Mei Tuk               25.3 C               31.3 C

Duration of sunshine (King's Park):              7.0 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 12.
 

Yesterday's (09 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                         0.11
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 09 Jul
     2003copy right image | Important notices | Privacy policy Last revision date: <10 Jul 2018> 

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