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Bulletin issued at 19:02 HKT 18/Sep/2019

At 7 p.m. at the Hong Kong Observatory the air temperature was 29 degrees Celsius and the relative humidity 76 per cent.

The air temperatures at other places were:

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


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


Climatological Information for 18 Sep

Regional Weather in Hong Kong

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Bulletin updated at 18:45 HKT 18/Sep/2019

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

The anticyclone aloft is bringing generally fine weather to southern China.

At 4 p.m., the tropical depression over the vicinity to the east of Taiwan was centred about 880 kilometres east-southeast of Taibei. It is forecast to be slow-moving.

Weather forecast for tonight and tomorrow

Mainly fine. Isolated showers at first. Very hot during the day tomorrow. Temperatures will range between 28 and 33 degrees. Moderate east to northeasterly winds.

Outlook : Fine and dry in the following few days.


(The above forecast period is valid up to 23:59 HKT tomorrow, 19/09/2019; 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 18/Sep/2019

GALE WARNING AREAS: KWANGTUNG, TAIWAN STRAIT AND BASHI.

GENERAL SITUATION AT 172100 UTC:
AN EASTERLY AIRSTREAM IS GENERALLY AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 180100 UTC:

HONG KONG= E TO NE 4-5, OCNL 6. A FEW SHOWERS. SEA UP TO 3 M. SWELL E TO NE 2 M. TEMP 32-28 C. =
KWANGTUNG= E TO NE 5-6, 7-8 IN E. ISOL SHOWERS AND TS. SEA 2-3 M, 4-6 M IN E. SWELL E TO NE 2 M. =
TAIWAN STRAIT= NE 7-8. FINE. SEA 4-6 M. SWELL NE 2-3 M. =
BASHI= N TO NE 6-7, OCNL 8. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA UP TO 6 M. SWELL NE 2-3 M. =
PRATAS= E TO NE 5-6, OCNL 7. ISOL SHOWERS AND TS. SEA UP TO 4 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 2-3 M. =
SCARBOROUGH= N TO NE 5-6. ISOL SHOWERS AND TS. SEA 2-3 M. SWELL NE 2 M. =
PARACEL= E TO NE 4-5, OCNL 6. ISOL SHOWERS AND TS. SEA UP TO 3 M. SWELL E TO NE 2 M. =
TONKIN= N TO NE 4-5. ISOL SHOWERS AND TS. SEA UP TO 2 M. =
DANANG= N TO NE 4-5. ISOL 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.


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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
    9-day Weather Forecast | UV Index Forecast | Weather Information for Fishermen

    Bulletin issued at 19:30 HKT 18/Sep/2019

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 7:30 p.m. on 18 September 2019

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

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

    At 7 p.m., the tropical depression over the vicinity to the east of Taiwan with maximum sustained winds of about 55 kilometres per hour near its centre was located at 22.0 degrees north, 129.4 degrees east. It is forecast to be slow moving.

    Area forecasts for the next 24 hours

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

    Nan'ao:
    Northeast force 6 to 7, occasionally force 8.
    Rough to very rough seas.

    Shanwei:
    East to northeast force 5 to 6.
    Moderate to rough seas.

    South of Hong Kong:
    East to northeast force 4 to 5, occasionally force 6.
    Moderate to rough seas.

    Shangchuan Dao:
    East to northeast force 4 to 5.
    Moderate seas.

    Outlook for the next 48 hours
    East to northeasterly winds of force 5 to 6, becoming northerly winds of force 5 to 6.

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

    Waglan Island Wind east-southeast force 3
      Visibility 21 Kilometres

    Shantou Wind southeast force 2
      Visibility 27 Kilometres

    Dongsha Wind northeast force 4
      Visibility 10 Kilometres

    Huangmaozhou Wind east force 4

    Macau Wind southeast force 2
      Visibility 9 Kilometres

    Xisha Wind east-northeast force 2
      Visibility 30 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 17:30 HKT 18/SEP/2019
    (Next update at 01:30 HKT 19/SEP/2019)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     ISOL CUNIM/TS AND ASSOCIATED HAZARDS.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     THE ANTICYCLONE ALOFT IS BRINGING GENERALLY FINE
     WEATHER TO SOUTHERN CHINA.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1900 TO 0400 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  080/5-10
                  TEMPO VRB/15G25 IN TS
       OFFSHORE:  080/15-20                            33-27
   B.   2000 FT:  050/15-20                            24
   C.   5000 FT:  050/25                               19
   D.  10000 FT:  060/25                               11
   E.  18000 FT:  070/20                               0
   F.  24000 FT:  070/15                               MS11
   G.  30000 FT:  060/15                               MS23
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL
   I. WEATHER       : 
      MAINLY FINE. ISOLATED SHOWERS AND THUNDERSTORMS.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 2500 FT.
      TEMPO FEW CB 1000 FT SCT 2000 FT BKN 4000 FT
   K. VISIBILITY    : 7 KM. TEMPO 4000 M IN SHOWERS.
                      TEMPO 2000 M IN TS.
   L. 0 DEG. C LEVEL: 18000 FT      10 DEG. C LEVEL(S) : 10600 FT
   M. TURBULENCE    : MOD TO SEV NEAR CUNIM/TS. 
                      MOD OFFSHORE AND NEAR HILLS.
   N. SEA STATE     : 2.0-2.5 M     SEA TEMPERATURE    : 29 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE EAST TO NORTHEASTERLY WINDS. MAINLY
     FINE. ISOLATED 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.

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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.

    There is no Significant Weather Information (SIGMET)

    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 18/Sep/2019 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     31.8 C
Minimum Air Temperature                     27.9 C
Grass Minimum Temperature                   27.7 C
Relative Humidity                        70 - 86 Percent
Rainfall                                     2.1 mm 
Total rainfall since 1st January          2206.5 mm
Against an average of                     2129.7 mm

Other Stations                Min                  Max
King's Park                  27.6 C               31.9 C
Wong Chuk Hang               27.4 C               31.6 C
Ta Kwu Ling                  24.7 C               32.0 C
Lau Fau Shan                 24.4 C               31.6 C
Tai Po                       25.2 C               31.1 C
Sha Tin                      26.9 C               32.0 C
Tuen Mun                     25.0 C               31.3 C
Tseung Kwan O                27.0 C               32.1 C
Sai Kung                     27.6 C               31.3 C
Cheung Chau                  24.9 C               32.9 C
Chek Lap Kok                 25.7 C               31.8 C
Tsing Yi                     25.4 C               31.9 C
Shek Kong                    24.8 C               32.4 C
Tsuen Wan Ho Koon            24.4 C               30.6 C
Tsuen Wan Shing Mun Valley   24.8 C               32.5 C
Shau Kei Wan                 28.0 C               31.0 C
Kowloon City                 26.9 C               31.8 C
Happy Valley                 28.6 C               33.2 C
Wong Tai Sin                 26.8 C               31.8 C
Stanley                      27.3 C               32.1 C
Kwun Tong                    28.1 C               31.7 C
Sham Shui Po                 26.8 C               32.3 C
Kai Tak Runway Park          28.5 C               31.0 C
Yuen Long Park               24.7 C               33.1 C
Tai Mei Tuk               25.9 C               34.0 C

Duration of sunshine (King's Park):              4.8 H
The mean UV index recorded at King's Park yesterday was 3,
the UV intensity was Moderate.
The maximum UV index for yesterday was 9.
 

Yesterday's (17 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                         0.11
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 17 Sep
     2003copy right image | Important notices | Privacy policy Last revision date: <18 Sep 2019> 

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