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Bulletin issued at 11:02 HKT 19/Jul/2019

At 11 a.m. at the Hong Kong Observatory the air temperature was 32 degrees Celsius and the relative humidity 78 per cent.
During the past hour the mean UV Index recorded at King's Park was 6. The intensity of UV radiation was high.

Please be reminded that:

The Very Hot Weather Warning is now in force. Very hot weather might cause adverse health effects. Members of the public should take care to avoid heatstroke.

The air temperatures at other places were:

King's Park 32 degrees;
Wong Chuk Hang 31 degrees;
Ta Kwu Ling 33 degrees;
Lau Fau Shan 32 degrees;
Tai Po 33 degrees;
Sha Tin 33 degrees;
Tuen Mun 33 degrees;
Tseung Kwan O 33 degrees;
Sai Kung 33 degrees;
Cheung Chau 30 degrees;
Chek Lap Kok 33 degrees;
Tsing Yi 32 degrees;
Shek Kong 33 degrees;
Tsuen Wan Ho Koon 31 degrees;
Tsuen Wan Shing Mun Valley 33 degrees;
Hong Kong Park 32 degrees;
Shau Kei Wan 32 degrees;
Kowloon City 33 degrees;
Happy Valley 33 degrees;
Wong Tai Sin 33 degrees;
Stanley 30 degrees;
Kwun Tong 33 degrees;
Sham Shui Po 32 degrees;
Kai Tak Runway Park 33 degrees;
Yuen Long Park 35 degrees;
Tai Mei Tuk 34 degrees.

Here is the information on Tropical Storm Danas at 10 a.m.:
Location: 29.4 degrees north, 124.0 degrees east.


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


Climatological Information for 19 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

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Bulletin updated at 10:45 HKT 19/Jul/2019

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

A southwesterly airstream is affecting the south China coast. Besides, the area of low pressure over the northeastern part of the South China Sea is bringing unsettled weather to the region.

At 10 a.m., Tropical Storm Danas was centred about 510 kilometres south-southwest of Jeju. It is forecast to move north at about 22 kilometres per hour across the East China Sea.

Weather forecast for today

Mainly cloudy with occasional showers. Very hot during the day. Moderate west to southwesterly winds.

Outlook : Brighter weather with a few showers in the next few days.


(The above forecast period is valid up to 23:59 HKT today, 19/07/2019; 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 19/Jul/2019

N0 WARNING.

GENERAL SITUATION AT 182100 UTC:
FOR DETAILS ON TROPICAL STORM DANAS (1905), PLEASE REFER TO THE 3-HRLY SHIPPING WARNINGS. LOW 996 HPA 22N 121E NE 10KT INTST NC.

MARINE FORECAST FOR 24 HOURS FROM 190100 UTC:

HONG KONG= W TO SW 4-5. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 2 M. SWELL SW UP TO 2 M. TEMP 32-28 C. =
KWANGTUNG= W TO SW 5-6. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 2-3 M. SWELL SW 2 M. =
TAIWAN STRAIT= SW 5-6. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 2-3 M. SWELL NE 2-3 M. =
BASHI= SW 6-7. DOWN TO 1000 M IN OCNL HEAVY SQUALLY SHOWERS AND TS. SEA 3-4 M. SWELL SW 3-4 M. =
PRATAS= W TO SW 5-6, OCNL 7. DOWN TO 1000 M IN OCNL HEAVY SQUALLY SHOWERS AND TS. SEA UP TO 4 M. SWELL SW 2-3 M. =
BALINTANG= SW 6-7. DOWN TO 1000 M IN OCNL HEAVY SQUALLY SHOWERS AND TS. SEA 3-4 M. SWELL SW 3-4 M. =
SCARBOROUGH= SW 5-6. DOWN TO 1000 M IN OCNL HEAVY SQUALLY SHOWERS AND TS. SEA 2-3 M. SWELL SW 3 M. =
PARACEL= S TO SW 5-6. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 2-3 M. SWELL SW 2-3 M. =
TONKIN= S 4-5. ISOL SHOWERS. SEA UP TO 2 M. =
DANANG= S TO SW 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.


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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 19/Jul/2019

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 9:30 a.m. on 19 July 2019

    Warnings:
    Strong winds in Nan'ao, Shanwei and south of Hong Kong.

    Weather Situation:
    A southwesterly airstream is affecting the south China coastal waters. Besides, the area of low pressure over the northeastern part of the South China Sea is bringing unsettled weather to the region.

    At 9 a.m., Tropical Storm Danas with maximum sustained winds of about 85 kilometres per hour near its centre was located at 29.2 degrees north, 124.0 degrees east. It is forecast to move north at about 22 kilometres per hour across the East China Sea.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    West to southwest force 4 to 5.
    Isolated squally showers and thunderstorms.
    Moderate seas.

    Nan'ao, Shanwei and South of Hong Kong:
    West to southwest force 5 to 6.
    Scattered squally showers and thunderstorms.
    Moderate to rough seas.

    Shangchuan Dao:
    South to southwest force 4 to 5.
    Isolated squally showers and thunderstorms.
    Moderate seas.

    Outlook for the next 48 hours
    South to southwesterly winds of force 4 to 5, occasionally force 6. Isolated squally showers and thunderstorms.

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

    Waglan Island Wind west force 4
      Visibility 18 Kilometres

    Shantou Wind west force 2
      Visibility 20 Kilometres

    Dongsha Wind west-southwest force 3
      Visibility 10 Kilometres

    Huangmaozhou Wind west force 5

    Macau Wind west-southwest force 1
      Visibility 11 Kilometres

    Xisha Wind south-southwest force 4
      Visibility 17 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 09:30 HKT 19/JUL/2019
    (Next update at 12:30 HKT 19/JUL/2019)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     ISOL CUNIM/TS AND ASSOCIATED HAZARDS.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     A SOUTHWESTERLY AIRSTREAM IS AFFECTING THE SOUTH
     CHINA COAST. BESIDES, THE AREA OF LOW PRESSURE
     OVER THE NORTHEASTERN PART OF THE SOUTH CHINA
     SEA IS BRINGING UNSETTLED WEATHER TO THE REGION.
     AT 9 A.M, TROPICAL STORM DANAS WAS CENTERED AT
     29.2 DEGREES NORTH, 124.0 DEGREES EAST. IT IS
     FORECAST TO MOVE NORTH AT ABOUT 12 KNOTS ACROSS
     THE EAST CHINA SEA.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1000 TO 2000 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  240/10
                  TEMPO VRB/15G20 IN TS
       OFFSHORE:  240/15-20                            30-36
   B.   2000 FT:  250/15-20                            26
   C.   5000 FT:  270/15                               21
   D.  10000 FT:  270/10                               12
   E.  18000 FT:  050/5-10                             0
   F.  24000 FT:  060/20                               MS12
   G.  30000 FT:  070/30                               MS25
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL
   I. WEATHER       : 
      MAINLY CLOUDY WITH OCCASIONAL SHOWERS. ISOLATED
      THUNDERSTORMS.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 2000 FT SCT 4000 FT
      TEMPO FEW CB 800 FT SCT 1500 FT BKN 4000 FT.
   K. VISIBILITY    : 7 KM. TEMPO 3500 M IN SHOWERS. 
                      TEMPO 2000 M IN TS.
   L. 0 DEG. C LEVEL: 18000 FT      10 DEG. C LEVEL(S) : 11000 FT
   M. TURBULENCE    : MOD TO SEV NEAR CUNIM/TS. 
                      MOD OFFSHORE AND NEAR HILLS
   N. SEA STATE     : 2.0-2.5 M     SEA TEMPERATURE    : 27 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE SOUTHWESTERLY WINDS, FRESH OFFSHORE.
     MAINLY CLOUDY WITH A FEW SHOWERS. 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 11:06 HKT on 19 Jul 19

    VHHK SIGMET 1 VALID 190305/190705 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N2100 E11730 - N1745 E11452 - N1844 E11421 - N1943 E11402 - N2241 E11414 - N2325 E11730 - N2100 E11730 TOP FL490 STNR 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

    Tropical Cyclone Warning |  Track and Positions of Tropical Cyclones
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    Bulletin issued at 09:30 HKT 19/Jul/2019


    Tropical Cyclone Warning

    At 190000 UTC, Tropical Storm Danas (1905) with central pressure 986 hectopascals was centred within 30 nautical miles of two eight point nine degrees north (28.9 N) one two four point zero degrees east (124.0 E) and is forecast to move north at about 12 knots for the next 24 hours.

    Maximum winds near the centre are estimated to be 45 knots.

    Radius of over 33 knot winds 150 nautical miles over eastern semicircle, 120 nautical miles elsewhere.
    Radius of over 2 metre waves 270 nautical miles over eastern semicircle, 180 nautical miles elsewhere.

    Forecast position and intensity at 200000 UTC
    Three three point seven degrees north (33.7 N)
    One two five point one degrees east (125.1 E)
    Maximum winds 40 knots.

    Forecast position and intensity at 210000 UTC
    Become extratropical low.



    The Hong Kong Observatory's tropical cyclone warnings for shipping are issued about one and a half hours after the time of observation. They incorporate additional information derived from surface and upper-air data and may therefore be slightly different from the real-time satellite or radar-based positions given in the hourly bulletins for public.

    While the forecast positions and track indicate the most likely future path of the tropical cyclone, they may deviate from the actual path taken by the storm.

    Tropical Cyclone Track
    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 19/Jul/2019 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     35.0 C
Minimum Air Temperature                     29.6 C
Grass Minimum Temperature                   28.2 C
Relative Humidity                        63 - 84 Percent
Rainfall                                      Trace 
Total rainfall since 1st January          1272.0 mm
Against an average of                     1308.5 mm

Other Stations                Min                  Max
King's Park                  28.6 C               34.4 C
Wong Chuk Hang               28.4 C               33.4 C
Ta Kwu Ling                  26.4 C               35.7 C
Lau Fau Shan                 26.3 C               35.2 C
Tai Po                       25.9 C               34.7 C
Sha Tin                      27.7 C               35.3 C
Tuen Mun                     27.5 C               36.0 C
Tseung Kwan O                26.8 C               34.2 C
Sai Kung                     27.9 C               34.5 C
Cheung Chau                  27.5 C               34.7 C
Chek Lap Kok                 29.9 C               37.2 C
Tsing Yi                     28.6 C               34.6 C
Shek Kong                    24.8 C               34.8 C
Tsuen Wan Ho Koon            25.3 C               32.6 C
Tsuen Wan Shing Mun Valley   27.2 C               34.0 C
Hong Kong Park               28.8 C               34.6 C
Kowloon City                 29.1 C               35.3 C
Happy Valley                 29.2 C               35.5 C
Wong Tai Sin                 28.7 C               35.0 C
Stanley                      28.5 C               33.7 C
Kwun Tong                    29.3 C               34.0 C
Sham Shui Po                 28.8 C               34.6 C
Kai Tak Runway Park          28.0 C               32.8 C
Yuen Long Park               26.3 C               37.6 C
Tai Mei Tuk               26.7 C               35.6 C

Duration of sunshine (King's Park):              9.5 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 8.
 

Yesterday's (18 Jul 2019) average ambient gamma radiation
dose rate taken outdoors in Hong Kong ranged from 0.09 to
0.15 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                               0.11
Yuen Ng Fan                         0.11
Tai Mei Tuk                         0.10
Sha Tau Kok                         0.10
Kwun Tong                           0.13
Sai Wan Ho                          0.09
King's Park                         0.14
Tsim Bei Tsui                       0.13
Cape D'Aguilar                      0.13
Chek Lap Kok                        0.15

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 18 Jul
     2003copy right image | Important notices | Privacy policy Last revision date: <19 Jul 2019> 

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