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Bulletin issued at 03:02 HKT 09/Jul/2018

At 3 a.m. at the Hong Kong Observatory the air temperature was 27 degrees Celsius and the relative humidity 90 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 27 degrees;
Tai Po 28 degrees;
Sha Tin 27 degrees;
Tuen Mun 27 degrees;
Tseung Kwan O 26 degrees;
Sai Kung 27 degrees;
Cheung Chau 25 degrees;
Chek Lap Kok 28 degrees;
Tsing Yi 28 degrees;
Shek Kong 28 degrees;
Tsuen Wan Ho Koon 25 degrees;
Tsuen Wan Shing Mun Valley 26 degrees;
Hong Kong Park 25 degrees;
Shau Kei Wan 26 degrees;
Kowloon City 27 degrees;
Happy Valley 27 degrees;
Wong Tai Sin 27 degrees;
Stanley 27 degrees;
Kwun Tong 27 degrees;
Sham Shui Po 27 degrees;
Kai Tak Runway Park 27 degrees;
Yuen Long Park 27 degrees;
Tai Mei Tuk 27 degrees.


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


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Bulletin updated at 02:45 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 coast of Guangdong.

At 2 a.m., Super Typhoon Maria was centred about 1460 kilometres east-southeast of Taibei. It is forecast to move west-northwest at about 25 kilometres per hour towards the vicinity of north of Taiwan.

Weather forecast for today

Mainly cloudy with a few showers. Isolated thunderstorms at first. Sunny intervals during the day. Temperatures will range between 26 and 31 degrees. Moderate east to southeasterly winds, occasionally fresh offshore.

Outlook : Sunny periods and a few showers in the following couple of days. It will be very hot midweek this week.


(The above forecast period is valid up to 23:59 HKT today, 09/07/2018; 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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Weather Information for the Marine Community

Bulletin issued at 21:00 HKT 08/Jul/2018

N0 WARNING.

GENERAL SITUATION AT 080900 UTC:
AN EASTERLY AIRSTREAM IS GENERALLY AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 081300 UTC:

HONG KONG= E TO SE 4-5, OCNL 6. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 3 M. SWELL S UP TO 2 M. TEMP 27-31 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= SE 6-7, BEC NE 6-7. ISOL SHOWERS AND TS. SEA 3-4 M. SWELL S 2 M. =
BASHI= E 5-6, OCNL 7. ISOL SHOWERS AND TS. SEA UP TO 4 M. SWELL S 2 M, E 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. =
BALINTANG= E TO SE 5-6. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 2-3 M. SWELL S 2 M, E 2-3 M. =
SCARBOROUGH= S 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 TO SE 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 03:30 HKT 09/Jul/2018

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 3:30 a.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 southeast force 4 to 5, occasionally force 6.
    Isolated squally showers and thunderstorms.
    Moderate to rough seas.

    Nan'ao, Shanwei, South of Hong Kong and Shangchuan Dao:
    East to southeast force 5 to 6.
    Isolated squally showers and thunderstorms.
    Moderate to rough seas.

    Outlook for the next 48 hours
    East to southeasterly winds of force 5 to 6, becoming northwesterly winds of force 6 in east. Isolated squally showers and thunderstorms.

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

    Waglan Island Wind northeast force 5
      Visibility 44 Kilometres

    Shantou Wind northeast force 1
      Visibility 30 Kilometres

    Huangmaozhou Wind northeast force 4

    Macau Wind east force 2
      Visibility 35 Kilometres

    Xisha Wind south force 2
      Visibility 30 Kilometres

  • Explanation of Seas or Sea Waves
  • Explanation of Swells
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  • 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 08/JUL/2018
    (Next update at 01:30 HKT 09/JUL/2018)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     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:  120/10
                  TEMPO VRB/15G25 IN TS
       OFFSHORE:  120/15, OCNL 20                      30-27
   B.   2000 FT:  130/15-20                            23
   C.   5000 FT:  140/15                               20
   D.  10000 FT:  140/15                               12
   E.  18000 FT:  100/10                               MS2
   F.  24000 FT:  070/15                               MS11
   G.  30000 FT:  060/20                               MS25
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      MAINLY CLOUDY WITH A FEW SHOWERS AND ISOLATED
      THUNDERSTORMS.
   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 4000 M IN SHOWERS.
                      TEMPO 2000 M IN TS.
   L. 0 DEG. C LEVEL: 17000 FT      10 DEG. C LEVEL(S) : 11400 FT
   M. TURBULENCE    : MOD TO SEV NEAR CUNIM/TS.
                      MOD OFFSHORE AND NEAR HILLS.
   N. SEA STATE     : 1.5-2.0 M     SEA TEMPERATURE    : 27 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE EAST TO SOUTHEASTERLY WINDS,
     OCCASIONALLY FRESH OFFSHORE.  SUNNY INTERVALS
     AND A FEW SHOWERS.  ISOLATED THUNDERSTORMS 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 14:18 HKT on 08 Jul 18

    VHHK SIGMET 1 VALID 080620/081020 VHHH- VHHK HONG KONG FIR EMBD TS FCST AT 0559Z WI N2100 E11636 - N2018 E11600 - N2230 E11400 - N2254 E11448 - N2300 E11530 - N2312 E11636 - N2100 E11636 TOP FL350 MOV WNW 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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