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Bulletin issued at 10:02 HKT 03/Jul/2018

At 10 a.m. at the Hong Kong Observatory the air temperature was 29 degrees Celsius and the relative humidity 86 per cent.
During the past hour the mean UV Index recorded at King's Park was 1. The intensity of UV radiation was low.

Please be reminded that:

The Thunderstorm Warning has been issued. It will remain effective until 1:00 p.m. today. A few squally thunderstorms are expected to occur over Hong Kong.

The air temperatures at other places were:

King's Park 28 degrees;
Wong Chuk Hang 30 degrees;
Ta Kwu Ling 26 degrees;
Lau Fau Shan 25 degrees;
Tai Po 28 degrees;
Sha Tin 27 degrees;
Tuen Mun 30 degrees;
Tseung Kwan O 27 degrees;
Sai Kung 27 degrees;
Cheung Chau 29 degrees;
Chek Lap Kok 31 degrees;
Tsing Yi 28 degrees;
Shek Kong 27 degrees;
Tsuen Wan Ho Koon 27 degrees;
Tsuen Wan Shing Mun Valley 27 degrees;
Hong Kong Park 29 degrees;
Shau Kei Wan 29 degrees;
Kowloon City 27 degrees;
Happy Valley 30 degrees;
Wong Tai Sin 27 degrees;
Stanley 29 degrees;
Kwun Tong 27 degrees;
Sham Shui Po 28 degrees;
Kai Tak Runway Park 28 degrees;
Yuen Long Park 26 degrees;
Tai Mei Tuk 28 degrees.

Between 8:45 and 9:45 a.m., lightning was detected within New Territories East, New Territories West, Hong Kong and Kowloon. The rainfall recorded in various regions were:

Tuen Mun 0 to 27 mm;
Yuen Long 0 to 27 mm;
Kwai Tsing 1 to 23 mm;
Tsuen Wan 0 to 20 mm;
North District 0 to 19 mm;
Kwun Tong 4 to 17 mm;
Sai Kung 0 to 14 mm;
Central & Western District 0 to 11 mm;
Kowloon City 7 to 10 mm;
Sham Shui Po 2 to 9 mm;
Yau Tsim Mong 4 to 8 mm;
Sha Tin 0 to 7 mm;
Wong Tai Sin 4 to 6 mm;
Eastern District 0 to 5 mm;
Tai Po 0 to 3 mm;
Islands District 0 to 1 mm.


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


Climatological Information for 3 Jul

Regional Weather in Hong Kong

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Bulletin updated at 09:45 HKT 03/Jul/2018

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

The southwest monsoon is bringing showers and thunderstorms to the coast of Guangdong. Locally, more than 10 millimetres of rainfall were recorded in many places this morning.

At 10 a.m., Typhoon Prapiroon was centred about 160 kilometres west-southwest of Nagasaki. It is forecast to move north-northeast at about 25 kilometres per hour across the East China Sea.

Weather forecast for today

Mainly cloudy with occasional showers and a few squally thunderstorms. Moderate to fresh southwesterly winds.

Outlook : Still a few showers tomorrow. Sunny periods in the latter part of this week.


(The above forecast period is valid up to 23:59 HKT today, 03/07/2018; 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 03/Jul/2018

GALE WARNING AREAS: TAIWAN STRAIT AND BASHI.

GENERAL SITUATION AT 022100 UTC:
THE SOUTHWEST MONSOON IS AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 030100 UTC:

HONG KONG= S TO SW 5-6, OCNL 7. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 4 M. SWELL SW UP TO 2 M. TEMP 31-27 C. =
KWANGTUNG= S TO SW 6-7. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 3-4 M. SWELL SW UP TO 2 M. =
TAIWAN STRAIT= SW 6-7, OCNL 8. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA UP TO 6 M. SWELL NE 3 M, SW 3 M. =
BASHI= W TO SW 6-7, OCNL 8. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 6 M. SWELL N TO NE 2-3 M, SW 3 M. =
PRATAS= SW 5-6, OCNL 7. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 4 M. SWELL NE 2 M, SW 2 M. =
BALINTANG= SW 6-7. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 3-4 M. SWELL N TO NE 2-3 M, SW 2-3 M. =
SCARBOROUGH= SW 6-7. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 3-4 M. SWELL SW 2 M. =
PARACEL= S TO SW 6-7. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 3-4 M. SWELL SW 2 M. =
TONKIN= S TO SW 6-7. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 3-4 M. SWELL S UP TO 2 M. =
DANANG= S TO SW 6-7. ISOL SHOWERS AND TS. SEA 3-4 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
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    • SOUTH CHINA COASTAL WATERS
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    South China Coastal Waters

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    Bulletin issued at 09:30 HKT 03/Jul/2018

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 9:30 a.m. on 03 July 2018

    Warnings:
    Strong winds in all areas.

    Weather Situation:
    The southwest monsoon is bringing unsettled weather to the south China coastal waters.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    South to southwest force 5 to 6, occasionally force 7.
    Isolated heavy squally showers and thunderstorms.
    Moderate to rough seas.

    Nan'ao and Shanwei:
    Southwest force 5 to 6, occasionally force 7.
    Isolated heavy squally showers and thunderstorms.
    Moderate to rough seas.

    South of Hong Kong and Shangchuan Dao:
    South to southwest force 6 to 7.
    Isolated heavy squally showers and thunderstorms.
    Rough seas.

    Outlook for the next 48 hours
    South to southwesterly winds of force 6 to 7. Isolated squally showers and thunderstorms.

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

    Waglan Island Wind southwest force 5
      Visibility 17 Kilometres

    Shantou Wind west-southwest force 2
      Visibility 28 Kilometres

    Huangmaozhou Wind southwest force 4

    Macau Wind south-southwest force 2

    Xisha Wind south-southwest force 4
      Visibility 10 Kilometres

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    • WEATHER FORECAST FOR LOCAL AVIATION
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    Weather Forecast for Local Aviation

    Bulletin issued at 09:30 HKT 03/JUL/2018
    (Next update at 12:30 HKT 03/JUL/2018)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     ISOL CUNIM/TS AND ASSOCIATED HAZARDS.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     THE SOUTHWEST MONSOON IS BRINGING UNSETTLED
     WEATHER TO THE SOUTH CHINA COASTAL AREAS.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1000 TO 2000 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  220/10-15
                  TEMPO VRB/15G25 IN TS
       OFFSHORE:  230/15-20                            29-33
   B.   2000 FT:  230/20                               25
   C.   5000 FT:  230/20                               19
   D.  10000 FT:  220/10                               11
   E.  18000 FT:  290/10                               MS2
   F.  24000 FT:  150/5                                MS11
   G.  30000 FT:  080/10                               MS22
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      MAINLY CLOUDY WITH OCCASIONAL SHOWERS AND A FEW
      SQUALLY THUNDERSTORMS.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1500 FT  SCT 2500 FT.  
      TEMPO FEW CB 800 FT  SCT 1500 FT  BKN 4000 FT.
   K. VISIBILITY    : 10 KM.  TEMPO 3000 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 NEAR CUNIM/TS AND NEAR HILLS. 
                      MOD OFFSHORE.
   N. SEA STATE     : 2.0-2.5 M     SEA TEMPERATURE    : 28 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE TO FRESH SOUTHWESTERLY WINDS.  MAINLY
     CLOUDY WITH A FEW SHOWERS AND ISOLATED
     THUNDERSTORMS.=

    ===================================================================
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 13:20 HKT on 02 Jul 18

    VHHK SIGMET 1 VALID 020520/020920 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N2154 E11542 - N2142 E11430 - N2200 E11336 - N2242 E11418 - N2242 E11424 - N2242 E11554 - N2154 E11542 TOP FL450 MOV NE 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 03/Jul/2018 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     30.6 C
Minimum Air Temperature                     25.6 C
Grass Minimum Temperature                   27.5 C
Relative Humidity                        78 - 92 Percent
Rainfall                                     2.1 mm 
Total rainfall since 1st January           640.0 mm
Against an average of                     1115.5 mm

Other Stations                Min                  Max
King's Park                  24.9 C               31.1 C
Wong Chuk Hang               25.7 C               30.1 C
Ta Kwu Ling                  25.6 C               33.2 C
Lau Fau Shan                 25.5 C               32.4 C
Tai Po                       23.8 C               32.0 C
Sha Tin                      25.3 C               31.5 C
Tuen Mun                     25.6 C               31.7 C
Tseung Kwan O                25.8 C               31.6 C
Sai Kung                     26.3 C               33.8 C
Cheung Chau                  24.6 C               31.8 C
Chek Lap Kok                 26.9 C               33.4 C
Tsing Yi                     25.3 C               31.3 C
Shek Kong                    25.9 C               32.7 C
Tsuen Wan Ho Koon            23.9 C               29.1 C
Tsuen Wan Shing Mun Valley   24.6 C               30.1 C
Hong Kong Park               25.1 C               30.2 C
Shau Kei Wan                 25.6 C               31.7 C
Kowloon City                 24.8 C               32.1 C
Happy Valley                 26.3 C               31.3 C
Wong Tai Sin                 25.5 C               31.0 C
Stanley                      26.1 C               30.4 C
Kwun Tong                    25.3 C               31.1 C
Sham Shui Po                 24.4 C               31.6 C
Kai Tak Runway Park          25.2 C               31.5 C
Yuen Long Park               26.7 C               32.0 C
Tai Mei Tuk               24.3 C               32.9 C

Duration of sunshine (King's Park):              1.6 H
The mean UV index recorded at King's Park yesterday was 2,
the UV intensity was Low.
The maximum UV index for yesterday was 7.
Sea surface temperature (Waglan Island):        // C 

Yesterday's (02 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                             0.09
Kat O                               0.10
Yuen Ng Fan                         0.12
Tai Mei Tuk                         0.12
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 02 Jul
     2003copy right image | Important notices | Privacy policy Last revision date: <03 Jul 2018> 

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