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Bulletin issued at 11:02 HKT 17/Sep/2019

At 11 a.m. at the Hong Kong Observatory the air temperature was 31 degrees Celsius and the relative humidity 70 per cent.
During the past hour the mean UV Index recorded at King's Park was 6. The intensity of UV radiation was high.

Hot weather might cause adverse health effects. The Observatory advises the public to stay on the alert.

The air temperatures at other places were:

King's Park 31 degrees;
Wong Chuk Hang 30 degrees;
Ta Kwu Ling 30 degrees;
Lau Fau Shan 30 degrees;
Tai Po 31 degrees;
Sha Tin 30 degrees;
Tuen Mun 31 degrees;
Tseung Kwan O 32 degrees;
Sai Kung 31 degrees;
Cheung Chau 30 degrees;
Chek Lap Kok 31 degrees;
Tsing Yi 31 degrees;
Shek Kong 31 degrees;
Tsuen Wan Ho Koon 29 degrees;
Tsuen Wan Shing Mun Valley 31 degrees;
Shau Kei Wan 30 degrees;
Kowloon City 32 degrees;
Happy Valley 31 degrees;
Wong Tai Sin 32 degrees;
Stanley 30 degrees;
Kwun Tong 31 degrees;
Sham Shui Po 30 degrees;
Kai Tak Runway Park 30 degrees;
Yuen Long Park 32 degrees;
Tai Mei Tuk 33 degrees.


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


Climatological Information for 17 Sep

Regional Weather in Hong Kong

Information on Tropical Cyclones

Hong Kong Climatology


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Bulletin updated at 10:45 HKT 17/Sep/2019

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

The weather is mainly fine over southeastern China. Meanwhile, showers are affecting the coast of Guangdong and the northern part of the South China Sea.

Weather forecast for today

Hot with sunny intervals and a few showers. Moderate east to northeasterly winds, occasionally fresh offshore.

Outlook : Hot with sunny periods in the next couple of days. Fine and dry over the weekend.


(The above forecast period is valid up to 23:59 HKT today, 17/09/2019; 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 17/Sep/2019

GALE WARNING AREA: TAIWAN STRAIT.

GENERAL SITUATION AT 162100 UTC:
AN NORTHEASTERLY AIRSTREAM IS GENERALLY AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 170100 UTC:

HONG KONG= E TO NE 4-5, OCNL 6. ISOL SHOWERS AND TS. SEA UP TO 3 M. TEMP 32-28 C. =
KWANGTUNG= E TO NE 5-6, OCNL 7. ISOL SHOWERS AND TS. SEA UP TO 4 M. =
TAIWAN STRAIT= NE 6-7, 8 LATER. ISOL SHOWERS AND TS. SEA 3-4 M, 6 M LATER. SWELL NE 3 M. =
BASHI= N TO NE 6-7. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 3-4 M. SWELL NE 2 M. =
PRATAS= E TO NE 5-6. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 2-3 M. SWELL NE 2 M. =
BALINTANG= N TO NE 6-7. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 3-4 M. SWELL NE 2 M. =
SCARBOROUGH= N TO NW 4-5. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA UP TO 2 M. SWELL NE 2 M. =
PARACEL= E TO NE 4-5, OCNL 6. ISOL SHOWERS AND TS. SEA UP TO 3 M. =
TONKIN= E TO NE 4-5. ISOL SHOWERS AND TS. SEA UP TO 2 M. =
DANANG= E TO NE 4-5. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 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 09:30 HKT 17/Sep/2019

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 9:30 a.m. on 17 September 2019

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

    Weather Situation:
    An easterly airstream is affecting the south China coastal waters.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    East to northeast force 4 to 5, occasionally force 6.
    Isolated showers and thunderstorms.
    Moderate to rough seas.

    Nan'ao:
    Northeast force 6 to 7, up to force 8 later.
    Isolated showers and thunderstorms.
    Rough seas, becoming very rough later.

    Shanwei and South of Hong Kong:
    East to northeast force 5 to 6.
    Isolated showers and thunderstorms.
    Moderate to rough seas.

    Shangchuan Dao:
    East to northeast force 4 to 5.
    Isolated showers and thunderstorms.
    Moderate seas.

    Outlook for the next 48 hours
    East to northeasterly winds of force 6 to 7, up to force 8 in east. Isolated showers and thunderstorms.

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

    Waglan Island Wind east force 5
      Visibility 15 Kilometres

    Shantou Wind east-northeast force 2
      Visibility 22 Kilometres

    Dongsha Wind northeast force 4
      Visibility 10 Kilometres

    Huangmaozhou Wind east force 6

    Macau Wind north force 1
      Visibility 7 Kilometres

    Xisha Wind west force 1
      Visibility 14 Kilometres

  • Explanation of Seas or Sea Waves
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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 09:30 HKT 17/SEP/2019
    (Next update at 12:30 HKT 17/SEP/2019)
    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 WEATHER IS MAINLY FINE OVER SOUTHEASTERN
     CHINA. MEANWHILE, SHOWERS ARE AFFECTING THE
     COAST OF GUANGDONG AND THE NORTHERN PART OF THE
     SOUTH CHINA SEA.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1000 TO 2000 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  060/10
                  TEMPO VRB/15G25 IN TS
       OFFSHORE:  080/20, OCNL 25                      27-32
   B.   2000 FT:  070/15-20                            23
   C.   5000 FT:  070/15-20                            19
   D.  10000 FT:  020/15                               11
   E.  18000 FT:  050/15                               0
   F.  24000 FT:  100/10                               MS10
   G.  30000 FT:  090/15                               MS21
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL
   I. WEATHER       : 
      MAINLY CLOUDY WITH ISOLATED SHOWERS AND
      THUNDERSTORMS.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 2000 FT SCT 3500 FT TEMPO FEW CB 1000 FT
      SCT 2000 FT BKN 5000 FT
   K. VISIBILITY    : 10 KM. TEMPO 4000 M IN SHOWERS. TEMPO 2000 M IN TS.
   L. 0 DEG. C LEVEL: 18000 FT      10 DEG. C LEVEL(S) : 10400 FT
   M. TURBULENCE    : MOD TO SEV NEAR CUNIM/TS AND  OFFSHORE. MOD NEAR HILLS
   N. SEA STATE     : 1.0-1.5 M     SEA TEMPERATURE    : 29 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE TO FRESH EAST TO NORTHEASTERLY WINDS.
     CLOUDY PERIODS AND A FEW SHOWERS.=

    ===================================================================
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 09:06 HKT on 17 Sep 19

    VHHK SIGMET 1 VALID 170110/170510 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N2132 E11535 - N2026 E11609 - N1917 E11310 - N2012 E11241 - N2132 E11535 TOP FL380 MOV SW 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 17/Sep/2019 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     32.3 C
Minimum Air Temperature                     26.3 C
Grass Minimum Temperature                   26.5 C
Relative Humidity                        64 - 93 Percent
Rainfall                                     4.3 mm 
Total rainfall since 1st January          2204.4 mm
Against an average of                     2118.7 mm

Other Stations                Min                  Max
King's Park                  26.0 C               32.5 C
Wong Chuk Hang               25.5 C               32.2 C
Ta Kwu Ling                  25.7 C               33.5 C
Lau Fau Shan                 24.9 C               31.8 C
Tai Po                       26.2 C               31.2 C
Sha Tin                      26.2 C               32.7 C
Tuen Mun                     25.2 C               31.5 C
Tseung Kwan O                25.2 C               32.2 C
Sai Kung                     25.9 C               32.0 C
Cheung Chau                  25.2 C               33.5 C
Chek Lap Kok                 25.7 C               31.9 C
Tsing Yi                     25.8 C               32.8 C
Shek Kong                    25.9 C               33.6 C
Tsuen Wan Ho Koon            24.7 C               30.9 C
Tsuen Wan Shing Mun Valley   25.4 C               33.3 C
Shau Kei Wan                 25.0 C               31.3 C
Kowloon City                 25.4 C               33.2 C
Happy Valley                 26.1 C               33.8 C
Wong Tai Sin                 25.6 C               32.8 C
Stanley                      25.4 C               32.1 C
Kwun Tong                    25.5 C               32.0 C
Sham Shui Po                 25.7 C               33.3 C
Kai Tak Runway Park          25.6 C               31.4 C
Yuen Long Park               25.6 C               34.1 C
Tai Mei Tuk               26.2 C               33.5 C

Duration of sunshine (King's Park):              7.4 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 (16 Sep 2019) average ambient gamma radiation
dose rate taken outdoors in Hong Kong ranged from 0.09 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                               0.11
Yuen Ng Fan                         0.12
Tai Mei Tuk                         0.10
Sha Tau Kok                         0.10
Kwun Tong                           0.12
Sai Wan Ho                          0.09
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 16 Sep
     2003copy right image | Important notices | Privacy policy Last revision date: <17 Sep 2019> 

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