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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 12:02 HKT 04/Dec/2018

At noon at the Hong Kong Observatory the air temperature was 27 degrees Celsius and the relative humidity 72 per cent.
During the past hour the mean UV Index recorded at King's Park was 6. The intensity of UV radiation was high.

The air temperatures at other places were:

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

No rainfall was recorded at the Hong Kong Observatory between midnight last night and midday today.


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


Climatological Information for 4 Dec


Local Weather Forecast
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Local Weather Forecast

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

Current Weather | Regional Temperature Forecast in HK |  9-day Weather Forecast
UV Index Forecast |  Weather Information for South China Coastal Waters

Bulletin updated at 11:45 HKT 04/Dec/2018

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

The weather is generally fine over the coast of southeastern China.

Weather forecast for this afternoon and tonight

Mainly fine. Warm with some haze in the afternoon. Light winds.

Outlook : Cloudier in the next couple of days. Temperatures dropping significantly on Friday and over the weekend.


(The above forecast period is valid up to 23:59 HKT today, 04/12/2018; 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 09:00 HKT 04/Dec/2018

N0 WARNING.

GENERAL SITUATION AT 032100 UTC:
AN EASTERLY AIRSTREAM IS AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 040100 UTC:

HONG KONG= E 4-5. FINE. DOWN TO 4000 M IN HAZE. SEA UP TO 2 M. TEMP 27-22 C. =
KWANGTUNG= E 4-5. DOWN TO 4000 M IN MIST OR LGT RAIN PATCHES. SEA UP TO 2 M. =
TAIWAN STRAIT= NE 4-5, 6-7 LATER. DOWN TO 4000 M IN MIST OR LGT RAIN PATCHES AT FIRST. SEA UP TO 2 M. SWELL NE 2-3 M LATER. =
BASHI= E TO NE 5-6. FINE. SEA 2-3 M. SWELL E TO NE 2-3 M. =
PRATAS= E 5-6. FINE. SEA 2-3 M. SWELL NE 2 M. =
BALINTANG= E 5-6. FINE. SEA 2-3 M. SWELL E TO NE 2-3 M. =
SCARBOROUGH= E TO NE 4-5. FINE. SEA UP TO 2 M. SWELL NE 2 M. =
PARACEL= E 4-5. LGT RAIN PATCHES. SEA UP TO 2 M. SWELL NE 2 M. =
TONKIN= SE 4. DOWN TO 4000 M IN MIST OR LGT RAIN PATCHES. =
DANANG= E TO SE 4. LGT RAIN PATCHES. =
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

Current Weather | Local Weather Forecast | Regional Temperature Forecast in HK
9-day Weather Forecast | UV Index Forecast | Weather Information for Fishermen

Bulletin issued at 12:30 HKT 04/Dec/2018

Weather information for south China coastal waters issued by the Hong Kong Observatory at 12:30 p.m. on 04 December 2018

Warnings:
Strong winds in Nan'ao and Shanwei.

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

Area forecasts for the next 24 hours

Hong Kong Adjacent Waters:
East force 4 to 5.
Visibility relatively low in some areas.
Moderate seas.

Nan'ao:
East force 4 to 5, becoming northeast force 6 to 7 later.
Moderate seas, becoming rough later.

Shanwei:
East force 4 to 5, becoming up to force 6 later.
Moderate seas, becoming rough later.

South of Hong Kong and Shangchuan Dao:
East force 4 to 5.
Moderate seas.

Outlook for the next 48 hours
East to northeasterly winds of force 5 to 6, up to force 7 in east.

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

Waglan Island Wind north-northeast force 2
  Visibility 26 Kilometres

Shantou Wind north-northeast force 1
  Visibility 19 Kilometres

Dongsha Wind east-northeast force 2
  Visibility 10 Kilometres

Huangmaozhou Wind northeast force 3

Macau Wind north-northeast force 2
  Visibility 7 Kilometres

Xisha Wind northeast force 2
  Visibility 26 Kilometres


WEATHER FORECAST FOR LOCAL AVIATION
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Weather Forecast for Local Aviation

Bulletin issued at 12:30 HKT 04/DEC/2018
(Next update at 17:30 HKT 04/DEC/2018)
I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     NIL.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     AN EASTERLY AIRSTREAM IS AFFECTING THE SOUTH
     CHINA COASTAL AREAS.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1300 TO 2300 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  070/5-10                             28-22
   B.   2000 FT:  090/10                               18
   C.   5000 FT:  340/5                                16
   D.  10000 FT:  230/20                               10
   E.  18000 FT:  230/20                               MS4
   F.  24000 FT:  240/45                               MS14
   G.  30000 FT:  230/50                               MS28
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      4400-5000 FT
   I. WEATHER       : 
      MAINLY FINE. LOCALISED HAZE/MIST.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 2500 FT
   K. VISIBILITY    : 7 KM. TEMPO 4000 M IN HAZE/MIST.
   L. 0 DEG. C LEVEL: 14500 FT      10 DEG. C LEVEL(S) : 10000 FT
   M. TURBULENCE    : NIL
   N. SEA STATE     : 0.5-1.0 M     SEA TEMPERATURE    : 23 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE NORTHEASTERLY WINDS. MAINLY CLOUDY.
     LOCALISED HAZE/MIST.=
===================================================================
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.

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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Last revision date: <28 Nov 2018> 

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 04/Dec/2018
HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     26.0 C
Minimum Air Temperature                     22.0 C
Grass Minimum Temperature                   19.7 C
Relative Humidity                        71 - 89 Percent
Rainfall                                       0 mm 
Total rainfall since 1st January          2151.0 mm
Against an average of                     2373.8 mm

Other Stations                Min                  Max
King's Park                  21.0 C               27.6 C
Wong Chuk Hang               20.8 C               28.6 C
Ta Kwu Ling                  17.9 C               28.0 C
Lau Fau Shan                 19.1 C               28.3 C
Tai Po                       19.8 C               27.3 C
Sha Tin                      20.3 C               26.8 C
Tseung Kwan O                20.0 C               27.2 C
Sai Kung                     21.2 C               26.3 C
Cheung Chau                  20.5 C               26.6 C
Chek Lap Kok                 21.9 C               27.3 C
Tsing Yi                     20.6 C               28.3 C
Shek Kong                    18.3 C               28.1 C
Tsuen Wan Ho Koon            19.5 C               28.1 C
Tsuen Wan Shing Mun Valley   19.7 C               28.2 C
Hong Kong Park               21.1 C               26.2 C
Shau Kei Wan                 21.5 C               27.1 C
Kowloon City                 21.0 C               29.2 C
Happy Valley                 20.7 C               28.0 C
Wong Tai Sin                 20.8 C               28.6 C
Stanley                      21.7 C               26.9 C
Kwun Tong                    21.1 C               26.4 C
Sham Shui Po                 21.0 C               28.5 C
Kai Tak Runway Park          22.2 C               26.5 C
Yuen Long Park               18.4 C               30.0 C
Tai Mei Tuk               20.2 C               27.8 C

Duration of sunshine (King's Park):              7.2 H
The mean UV index recorded at King's Park yesterday was 2,
the UV intensity was Low.
The maximum UV index for yesterday was 6.
 

Yesterday's (03 Dec 2018) 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                               0.10
Yuen Ng Fan                         0.12
Tai Mei Tuk                         0.12
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 03 Dec
Last revision date: <04 Dec 2018> 

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