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

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Weather Information for South China Coastal Waters

Bulletin issued at 18:02 HKT 12/Apr/2018

At 6 p.m. at the Hong Kong Observatory the air temperature was 26 degrees Celsius and the relative humidity 80 per cent.
During the past hour the mean UV Index recorded at King's Park was 0.3. The intensity of UV radiation was low.

The air temperatures at other places were:

King's Park 26 degrees;
Wong Chuk Hang 26 degrees;
Ta Kwu Ling 27 degrees;
Lau Fau Shan 27 degrees;
Tai Po 27 degrees;
Sha Tin 27 degrees;
Tuen Mun 26 degrees;
Tseung Kwan O 25 degrees;
Sai Kung 25 degrees;
Cheung Chau 25 degrees;
Chek Lap Kok 27 degrees;
Tsing Yi 26 degrees;
Shek Kong 27 degrees;
Tsuen Wan Ho Koon 26 degrees;
Tsuen Wan Shing Mun Valley 27 degrees;
Hong Kong Park 26 degrees;
Shau Kei Wan 25 degrees;
Kowloon City 27 degrees;
Happy Valley 27 degrees;
Wong Tai Sin 27 degrees;
Stanley 25 degrees;
Kwun Tong 26 degrees;
Sham Shui Po 27 degrees;
Kai Tak Runway Park 25 degrees;
Yuen Long Park 27 degrees;
Tai Mei Tuk 26 degrees.


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


Climatological Information for 12 Apr


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 17:45 HKT 12/Apr/2018

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

A southerly airstream is affecting the coastal areas of Guangdong.

Weather forecast for tonight and tomorrow

Cloudy periods tonight. Mainly fine tomorrow. The minimum temperature will be about 24 degrees. Hot during the day with a maximum temperature of about 30 degrees. Light to moderate southerly winds.

Outlook : Hot with sunny periods on Saturday. Temperatures falling on Sunday. More showers early next week and there will be thunderstorms.


(The above forecast period is valid up to 23:59 HKT tomorrow, 13/04/2018; 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 12/Apr/2018

N0 WARNING.

GENERAL SITUATION AT 112100 UTC:
A SOUTHERLY AIRSTREAM IS AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 120100 UTC:

HONG KONG= S TO SE 3-4. DOWN TO 2000 M IN MIST PATCHES. ISOL SHOWERS TOMORROW MORNING. TEMP 29-24 C. =
KWANGTUNG= S TO SE 4, OCNL 5. DOWN TO 2000 M IN MIST PATCHES. ISOL SHOWERS. SEA UP TO 2 M. =
TAIWAN STRAIT= S TO SE 4-5. DOWN TO 2000 M IN MIST PATCHES. ISOL SHOWERS AND TS. SEA UP TO 2 M. =
BASHI= S TO SE 4-5, OCNL 6. FINE. SEA UP TO 3 M. SWELL SE UP TO 2 M. =
PRATAS= S TO SE 4. FINE. =
BALINTANG= S TO SE 4-5, OCNL 6. FINE. SEA UP TO 3 M. SWELL SE UP TO 2 M. =
SCARBOROUGH= S TO SE 4, OCNL 5. FINE. SEA UP TO 2 M. =
PARACEL= S TO SE 4, OCNL 5. DOWN TO 2000 M IN MIST OR LGT RAIN PATCHES IN N. SEA UP TO 2 M. =
TONKIN= S TO SE 4-5, OCNL 6. DOWN TO 2000 M IN MIST OR LGT RAIN PATCHES. SEA UP TO 3 M. =
DANANG= S TO SE 4-5. DOWN TO 2000 M IN MIST OR LGT RAIN PATCHES. 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 16:30 HKT 12/Apr/2018

Weather information for south China coastal waters issued by the Hong Kong Observatory at 4:30 p.m. on 12 April 2018

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

Area forecasts for the next 24 hours

Hong Kong Adjacent Waters:
South force 3 to 4.
Mist patches. Isolated showers.
Slight to moderate seas.

Nan'ao and Shanwei:
South to southeast force 4.
Moderate seas.

South of Hong Kong and Shangchuan Dao:
South force 4, occasionally force 5.
Moderate seas.

Outlook for the next 48 hours
Southerly winds of force 4 to 5, becoming north to northeasterly winds of force 6 later. Isolated showers and thunderstorms later.

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

Waglan Island Wind east-southeast force 2
  Visibility 28 Kilometres

Shantou Wind south-southwest force 2
  Visibility 30 Kilometres

Huangmaozhou Wind southeast force 3

Macau Wind south-southeast force 2
  Visibility 19 Kilometres

Xisha Wind southeast force 2
  Visibility 30 Kilometres


WEATHER FORECAST FOR LOCAL AVIATION
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Weather Forecast for Local Aviation

Bulletin issued at 17:30 HKT 12/APR/2018
(Next update at 01:30 HKT 13/APR/2018)
I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     NIL.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     A SOUTHERLY AIRSTREAM IS AFFECTING THE SOUTH
     CHINA COASTAL AREAS.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1800 TO 0400 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  180/5-10
       OFFSHORE:  160/10-15                            28-24
   B.   2000 FT:  200/15-20                            20
   C.   5000 FT:  220/20                               17
   D.  10000 FT:  240/25                               10
   E.  18000 FT:  270/40                               MS6
   F.  24000 FT:  280/50                               MS16
   G.  30000 FT:  280/60                               MS31
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL
   I. WEATHER       : 
      CLOUDY PERIODS. LOCALISED MIST LATER.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1500 FT  SCT 3000 FT
   K. VISIBILITY    : 9 KM. TEMPO 4000 M IN MIST.
   L. 0 DEG. C LEVEL: 14500 FT      10 DEG. C LEVEL(S) : 10000 FT
   M. TURBULENCE    : MOD OFFSHORE AND  NEAR HILLS
   N. SEA STATE     : 0.5-1.0 M     SEA TEMPERATURE    : 23 DEG
IV.  FURTHER OUTLOOK: 
     LIGHT TO MODERATE SOUTHERLY WINDS. MAINLY FINE.
     LOCALISED MIST IN THE MORNING.=
===================================================================
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 14:15 HKT on 07 Apr 18

VHHK SIGMET 1 VALID 070615/071015 VHHH- VHHK HONG KONG FIR SEV ICE OBS N OF N2030 AND E OF E11230 FL140/200 MOV E 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: <06 Apr 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 12/Apr/2018
HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     27.6 C
Minimum Air Temperature                     22.5 C
Grass Minimum Temperature                   20.8 C
Relative Humidity                        73 - 91 Percent
Rainfall                                       0 mm 
Total rainfall since 1st January            89.4 mm
Against an average of                      230.8 mm

Other Stations                Min                  Max
King's Park                  21.7 C               27.8 C
Wong Chuk Hang               21.0 C               27.1 C
Ta Kwu Ling                  20.4 C               28.7 C
Lau Fau Shan                 20.2 C               27.0 C
Tai Po                       21.1 C               25.9 C
Sha Tin                      19.9 C               29.1 C
Tuen Mun                     21.5 C               28.2 C
Tseung Kwan O                20.6 C               26.6 C
Sai Kung                     21.6 C               26.0 C
Cheung Chau                  21.7 C               28.7 C
Chek Lap Kok                 22.7 C               28.6 C
Tsing Yi                     21.4 C               28.9 C
Shek Kong                    19.7 C               30.0 C
Tsuen Wan Ho Koon            20.1 C               26.7 C
Tsuen Wan Shing Mun Valley   20.6 C               27.7 C
Hong Kong Park               21.2 C               26.4 C
Shau Kei Wan                 21.7 C               26.7 C
Kowloon City                 21.6 C               28.3 C
Happy Valley                 21.9 C               28.7 C
Wong Tai Sin                 21.5 C               28.5 C
Stanley                      22.0 C               26.2 C
Kwun Tong                    21.8 C               27.8 C
Sham Shui Po                 22.0 C               28.2 C
Kai Tak Runway Park          22.2 C               25.8 C
Yuen Long Park               20.3 C               29.2 C
Tai Mei Tuk               21.4 C               27.5 C

Duration of sunshine (King's Park):              2.2 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 6.
Sea surface temperature (Waglan Island):        22.9 C 

Yesterday's (11 Apr 2018) average ambient gamma radiation
dose rate taken outdoors in Hong Kong ranged from 0.08 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                           0.08
Tap Mun                             0.09
Kat O                               0.11
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                         0.15
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 11 Apr
Last revision date: <12 Apr 2018> 

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