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

At 1 a.m. at the Hong Kong Observatory the air temperature was 30 degrees Celsius and the relative humidity 80 per cent.

The air temperatures at other places were:

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


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


Climatological Information for 2 Jul

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Bulletin updated at 00:45 HKT 02/Jul/2018

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

The weather was mainly fine over the coast of eastern Guangdong yesterday at first. The southwest monsoon brought thundery showers to the coast of Guangdong. Locally, it was very hot with sunny periods. Thundery showers brought more than 10 millimetres of rainfall to Tsuen Wan and Sha Tin in the afternoon. The southwest monsoon will bring showers and thunderstorms to southern China in the next couple of days.

At 11 p.m. last night, Severe Tropical Storm Prapiroon was centred about 120 kilometres southwest of Okinawa. It is forecast to move north at about 22 kilometres per hour towards the vicinity of the Ryukyu Islands and intensify gradually.

Weather forecast for Hong Kong

Mainly cloudy with a few showers. Isolated thunderstorms at first. Sunny intervals during the day. Temperatures will range between 27 and 31 degrees. Moderate southwesterly winds, fresh at times.

Outlook : Showers and isolated thunderstorms in the following couple of days. Sunny periods in the middle and latter parts of this week.


(The above forecast period is valid up to 23:59 HKT today, 02/07/2018; 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 01/Jul/2018

GALE WARNING AREAS: BASHI AND BALINTANG.

GENERAL SITUATION AT 010900 UTC:
A SOUTHWESTERLY AIRSTREAM IS GENERALLY AFFECTING THE FORECAST AREAS. SEVERE TROPICAL STORM PRAPIROON (1807) 980 HPA 25N 127E N 12 KT INTSF.

MARINE FORECAST FOR 24 HOURS FROM 011300 UTC:

HONG KONG= SW 5-6. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 2-3 M. TEMP 27-31 C. =
KWANGTUNG= S TO SW 5-6, OCNL 7. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 4 M. SWELL S TO SW UP TO 2 M. =
TAIWAN STRAIT= SW 5-6, OCNL 7. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA UP TO 4 M. SWELL NE 2-3 M, SW 2 M. =
BASHI= W TO SW 6-7, OCNL 8. DOWN TO 1000 M IN SCT HEAVY SQUALLY SHOWERS AND TS. SEA UP TO 6 M. SWELL E TO NE 2-3 M, SW 2 M. =
PRATAS= SW 5-6, OCNL 7. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 4 M. SWELL E UP TO 2 M, S TO SW 2 M. =
BALINTANG= W TO SW 6-7, OCNL 8. DOWN TO 1000 M IN SCT HEAVY SQUALLY SHOWERS AND TS. SEA UP TO 6 M. SWELL E TO NE 2 M, SW 2 M. =
SCARBOROUGH= W TO SW 5-6, OCNL 7. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 4 M. SWELL NE UP TO 2 M, S TO SW 2 M. =
PARACEL= 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. =
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 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
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    • SOUTH CHINA COASTAL WATERS
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    South China Coastal Waters

    Current Weather | Local Weather Forecast | Regional Temperature Forecast in HK
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    Bulletin issued at 23:30 HKT 01/Jul/2018

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 11:30 p.m. on 01 July 2018

    Warnings:
    Strong winds in all areas.

    Weather Situation:
    A southwesterly airstream is affecting the south China coastal waters.

    At 11 p.m., Severe Tropical Storm Prapiroon with maximum sustained winds of about 105 kilometres per hour near its centre was located near 25.6 degrees north, 126.7 degrees east. It is forecast to move north at about 22 kilometres per hour towards the vicinity of the Ryukyu Islands and intensify gradually.

    Area forecasts for the next 24 hours

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

    Nan'ao, Shanwei and South of Hong Kong:
    Southwest force 5 to 6, becoming force 7 later.
    Isolated squally showers and thunderstorms.
    Moderate to rough seas.

    Shangchuan Dao:
    South to southwest force 6 to 7.
    Isolated 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 south-southwest force 4
      Visibility 30 Kilometres

    Shantou Wind west-southwest force 2
      Visibility 30 Kilometres

    Huangmaozhou Wind south-southwest force 5

    Macau Wind south-southwest force 2

    Xisha Wind south-southwest force 3
      Visibility 16 Kilometres

  • Explanation of Seas or Sea Waves
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    • WEATHER FORECAST FOR LOCAL AVIATION
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    Weather Forecast for Local Aviation

    Bulletin issued at 01:30 HKT 02/JUL/2018
    (Next update at 9:00-9:30 HKT 02/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 :
     THE SOUTHWEST MONSOON IS BRINGING THUNDERY
     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:  220/10-15
                  TEMPO VRB/20G30 IN TS
       OFFSHORE:  220/15-20, OCNL 25                   30-27
   B.   2000 FT:  220/15-20, OCNL 25                   24
   C.   5000 FT:  230/20                               20
   D.  10000 FT:  250/15                               12
   E.  18000 FT:  290/10                               MS1
   F.  24000 FT:  350/10                               MS13
   G.  30000 FT:  040/15                               MS26
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      MAINLY CLOUDY WITH ISOLATED SHOWERS AND SQUALLY
      THUNDERSTORMS.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1500 FT  SCT 3000 FT.  TEMPO FEW CB 800 FT
      SCT 1500 FT  BKN 4000 FT.
   K. VISIBILITY    : 10 KM.  TEMPO 4000 M IN SHOWERS.  TEMPO 2000 M IN TS.
   L. 0 DEG. C LEVEL: 17500 FT      10 DEG. C LEVEL(S) : 11600 FT
   M. TURBULENCE    : MOD TO SEV NEAR CUNIM/TS, OFFSHORE AND NEAR HILLS.
   N. SEA STATE     : 2.0-3.0 M     SEA TEMPERATURE    : 28 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE TO FRESH SOUTHWESTERLY WINDS.  MAINLY
     CLOUDY WITH ISOLATED SHOWERS AND SQUALLY
     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 15:00 HKT on 01 Jul 18

    VHHK SIGMET 1 VALID 010505/010905 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N2142 E11442 - N2142 E11312 - N2212 E11312 - N2248 E11442 - N2142 E11442 TOP FL400 MOV E 10KT NC= VHHK SIGMET 2 VALID 010700/011100 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N2200 E11600 - N2100 E11300 - N2230 E11400 - N2245 E11500 - N2230 E11600 - N2200 E11600 TOP FL400 MOV E 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 02/Jul/2018 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     32.9 C
Minimum Air Temperature                     28.0 C
Grass Minimum Temperature                   26.4 C
Relative Humidity                        65 - 91 Percent
Rainfall                                     4.1 mm 
Total rainfall since 1st January           637.9 mm
Against an average of                     1106.4 mm

Other Stations                Min                  Max
King's Park                  28.1 C               33.0 C
Wong Chuk Hang               28.6 C               31.2 C
Ta Kwu Ling                  25.7 C               33.7 C
Lau Fau Shan                 27.4 C               33.6 C
Tai Po                       27.8 C               33.1 C
Sha Tin                      27.4 C               32.9 C
Tuen Mun                     28.4 C               32.9 C
Tseung Kwan O                27.6 C               33.9 C
Sai Kung                     28.0 C               35.4 C
Cheung Chau                  27.9 C               32.7 C
Chek Lap Kok                 27.9 C               34.6 C
Tsing Yi                     27.3 C               32.4 C
Shek Kong                    27.7 C               34.0 C
Tsuen Wan Ho Koon            25.3 C               31.4 C
Tsuen Wan Shing Mun Valley   26.5 C               31.2 C
Hong Kong Park               27.1 C               31.4 C
Shau Kei Wan                 28.1 C               32.9 C
Kowloon City                 27.6 C               33.1 C
Happy Valley                 28.1 C               33.0 C
Wong Tai Sin                 27.7 C               33.6 C
Stanley                      28.1 C               31.6 C
Kwun Tong                    27.7 C               32.9 C
Sham Shui Po                 27.3 C               33.0 C
Kai Tak Runway Park          27.6 C               33.0 C
Yuen Long Park               27.5 C               34.5 C
Tai Mei Tuk               27.7 C               34.3 C

Duration of sunshine (King's Park):              8.7 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 11.
Sea surface temperature (Waglan Island):        26.7 C 

Yesterday's (01 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                         0.11
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 01 Jul
     2003copy right image | Important notices | Privacy policy Last revision date: <02 Jul 2018> 

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