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Automatic Regional Weather Forecast in Hong Kong & Pearl River Delta Region

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9-day Weather Forecast | UV Index Forecast
Weather Information for South China Coastal Waters

Bulletin issued at 22:02 HKT 17/Sep/2017

At 10 p.m. at the Hong Kong Observatory the air temperature was 30 degrees Celsius and the relative humidity 67 per cent.

The air temperatures at other places were:

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


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


Climatological Information for 17 Sep


Local Weather Forecast
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Local Weather Forecast

Automatic Regional Weather Forecast in Hong Kong & Pearl River Delta Region

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UV Index Forecast |  Weather Information for South China Coastal Waters

Bulletin updated at 21:45 HKT 17/Sep/2017

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

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

At 8 p.m., Severe Tropical Storm Talim was centred about 150 kilometres west-southwest of Osaka. It is forecast to move northeast at about 45 kilometres per hour across Japan.

Weather forecast for tonight and tomorrow

Mainly fine. Some haze at first. There will be one or two showers tomorrow morning. Hot during the day. Temperatures will range between 27 and 32 degrees. Light winds, becoming moderate easterlies tomorrow.

Outlook : Mainly fine on Tuesday. Cloudier with a few showers in the middle and latter parts of this week.


(The above forecast period is valid up to 23:59 HKT tomorrow, 18/09/2017; Regular update at : around 45 minutes past each hour, 16:15 HKT and 23:15 HKT)



MARINE FORECAST
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Marine Forecast

Weather Information for the Marine Community

Bulletin issued at 21:00 HKT 17/Sep/2017

N0 WARNING.

GENERAL SITUATION AT 170900 UTC:
A NORTHERLY AIRSTREAM IS AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 171300 UTC:

HONG KONG= NW 4, BEC E UP TO 5. DOWN TO 4000 M IN SOME HAZE. ONE OR TWO SHOWERS TOMORROW. TEMP 27-32 C. =
KWANGTUNG= NW 4-5, BEC E UP TO 5. FINE. SEA UP TO 2 M. =
TAIWAN STRAIT= NE 4-5, OCNL 6. FINE. SEA UP TO 3 M. SWELL NE 2-3 M. =
BASHI= E TO NE 5-6. ISOL SHOWERS AND TS. SEA 2-3 M. SWELL NE 2-3 M. =
PRATAS= NW 4-5, BEC E UP TO 5. FINE. SEA UP TO 2 M. =
BALINTANG= E TO NE 5-6. ISOL SHOWERS AND TS. SEA 2-3 M. SWELL NE 2-3 M. =
SCARBOROUGH= NW 4-5. ISOL SHOWERS AND TS. SEA UP TO 2 M. =
PARACEL= NW 4-5, E TO SE UP TO 5 LATER. FINE. SEA UP TO 2 M. =
TONKIN= NW 4-5, SE UP TO 5 LATER. ISOL SHOWERS. SEA UP TO 2 M. =
DANANG= NW 4-5, SE UP TO 5 LATER. ISOL SHOWERS. 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.



SOUTH CHINA COASTAL WATERS
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South China Coastal Waters

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

Bulletin issued at 19:30 HKT 17/Sep/2017

Weather information for south China coastal waters issued by the Hong Kong Observatory at 7:30 p.m. on 17 September 2017

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

Area forecasts for the next 24 hours

Hong Kong Adjacent Waters:
Northwest force 4, becoming east up to force 5.
Some haze, one or two showers tomorrow.
Moderate seas.

Nan'ao, Shanwei, South of Hong Kong and Shangchuan Dao:
Northwest force 4 to 5, becoming east up to force 5.
Moderate seas.

Outlook for the next 48 hours
Easterly winds of force 5.

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

Waglan Island Wind southeast force 2
  Visibility 19 Kilometres

Shantou Wind east force 2
  Visibility 23 Kilometres

Dongsha Wind southwest force 2
  Visibility 10 Kilometres

Macau Wind southeast force 1
  Visibility 8 Kilometres

Xisha Wind west-southwest force 1
  Visibility 22 Kilometres


WEATHER FORECAST FOR LOCAL AVIATION
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Weather Forecast for Local Aviation

Bulletin issued at 17:30 HKT 17/SEP/2017
(Next update at 01:30 HKT 18/SEP/2017)
I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     NIL.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     THE ANTICYCLONE ALOFT IS BRINGING GENERALLY FINE
     WEATHER TO SOUTHEASTERN CHINA.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1800 TO 0400 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  VRB/5-10                             34-27
   B.   2000 FT:  030/10-15                            25
   C.   5000 FT:  010/15                               20
   D.  10000 FT:  340/15                               13
   E.  18000 FT:  360/20                               MS3
   F.  24000 FT:  030/20                               MS14
   G.  30000 FT:  080/35                               MS27
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      MAINLY FINE.  LOCALIZED HAZE.  A FEW SHOWERS
      LATER.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 3000 FT.
   K. VISIBILITY    : 9 KM.  TEMPO 4000 M IN HAZE/SHOWERS.
   L. 0 DEG. C LEVEL: 17000 FT      10 DEG. C LEVEL(S) : 11400 FT
   M. TURBULENCE    : NIL.
   N. SEA STATE     : 1.0-1.5 M     SEA TEMPERATURE    : 28 DEG
IV.  FURTHER OUTLOOK: 
     LIGHT TO MODERATE EASTERLY WINDS.  MAINLY FINE
     APART FROM A FEW SHOWERS.  LOCALIZED HAZE AT
     FIRST.=
===================================================================
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 07:30 HKT on 15 Sep 17

VHHK SIGMET 5 VALID 141930/142330 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N1648 E11406 - N1642 E11400 - N1930 E11130 - N2124 E11130 - N2148 E11218 - N1900 E11342 - N1648 E11406 TOP FL420 MOV W 10KT NC= VHHK SIGMET 6 VALID 142330/150330 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N1800 E11248 - N1930 E11130 - N2124 E11130 - N2154 E11236 - N1918 E11306 - N1800 E11248 TOP FL420 MOV W 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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Last revision date: <17 Sep 2017> 

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/2017
HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     32.6 C
Minimum Air Temperature                     27.7 C
Grass Minimum Temperature                   26.9 C
Relative Humidity                        53 - 91 Percent
Rainfall                                       0 mm 
Total rainfall since 1st January          2348.7 mm
Against an average of                     2118.7 mm

Other Stations                Min                  Max
King's Park                  27.5 C               33.5 C
Wong Chuk Hang               26.4 C               33.0 C
Ta Kwu Ling                  25.2 C               34.8 C
Lau Fau Shan                 26.8 C               33.8 C
Tai Po                       26.6 C               34.2 C
Sha Tin                      26.0 C               35.3 C
Tuen Mun                     26.8 C               34.0 C
Tseung Kwan O                25.3 C               34.0 C
Sai Kung                     26.9 C               33.5 C
Cheung Chau                  26.2 C               34.7 C
Chek Lap Kok                 28.0 C               35.0 C
Tsing Yi                     26.8 C               33.4 C
Shek Kong                    25.9 C               35.3 C
Tsuen Wan Ho Koon            25.5 C               32.6 C
Tsuen Wan Shing Mun Valley   25.7 C               34.9 C
Hong Kong Park               27.0 C               33.6 C
Shau Kei Wan                 27.5 C               33.5 C
Kowloon City                 27.2 C               34.9 C
Happy Valley                 27.1 C               34.0 C
Wong Tai Sin                 25.6 C               34.1 C
Stanley                      27.0 C               32.5 C
Kwun Tong                    27.5 C               34.0 C
Sham Shui Po                 27.3 C               33.9 C
Kai Tak Runway Park          28.0 C               33.6 C
Yuen Long Park               26.4 C               35.6 C
Tai Mei Tuk               27.1 C               34.6 C

Duration of sunshine (King's Park):              10.6 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 8.
Sea surface temperature (Waglan Island):        29.3 C 

Yesterday's (16 Sep 2017) 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                           0.08
Tap Mun                             0.09
Kat O                               0.08
Yuen Ng Fan                         0.12
Tai Mei Tuk                         0.12
Sha Tau Kok                         0.10
Kwun Tong                           0.11
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 during the period 1987-2016, the background ambient gamma radiation levels may vary between 0.06 and 0.30 microsievert per hour.
  2. The extent of health effects to a person as a result of exposure to radiation is expressed by a physical quantity called equivalent dose, in unit of sievert. Protective action may be required if there is an increase in the ambient gamma dose rate above background such that the total additional dose is expected to exceed 5000 microsieverts in a relatively short period of time. For example, a dose of 5000 microsieverts may be reached when the ambient gamma dose rate is 1000 microsieverts per hour (several thousand times above background) and lasts for 5 hours.
  3. The readings of ambient gamma radiation level from instrument are expressed in unit of gray, which is numerically equal to the gamma dose expressed in sievert.
Climatological Information for 16 Sep
Last revision date: <17 Sep 2017> 

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