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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 21:02 HKT 18/Nov/2018

At 9 p.m. at the Hong Kong Observatory the air temperature was 24 degrees Celsius and the relative humidity 84 per cent.

The air temperatures at other places were:

King's Park 23 degrees;
Wong Chuk Hang 24 degrees;
Ta Kwu Ling 23 degrees;
Lau Fau Shan 24 degrees;
Tai Po 23 degrees;
Sha Tin 24 degrees;
Tuen Mun 24 degrees;
Tseung Kwan O 23 degrees;
Sai Kung 23 degrees;
Cheung Chau 23 degrees;
Chek Lap Kok 25 degrees;
Tsing Yi 24 degrees;
Shek Kong 24 degrees;
Tsuen Wan Ho Koon 23 degrees;
Tsuen Wan Shing Mun Valley 24 degrees;
Hong Kong Park 24 degrees;
Shau Kei Wan 23 degrees;
Kowloon City 23 degrees;
Happy Valley 25 degrees;
Wong Tai Sin 24 degrees;
Stanley 23 degrees;
Kwun Tong 23 degrees;
Sham Shui Po 24 degrees;
Kai Tak Runway Park 23 degrees;
Yuen Long Park 24 degrees;
Tai Mei Tuk 23 degrees.

Here is the information on Tropical Depression Toraji at 8 p.m.:
Location: 11.5 degrees north, 108.3 degrees east.


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


Climatological Information for 18 Nov


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

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Bulletin updated at 20:45 HKT 18/Nov/2018

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

Pressure is rising over inland southern China. A replenishment of the northeast monsoon is expected to reach the coastal areas overnight.

At 8 p.m., Tropical Depression Toraji was centred about 190 kilometres east-northeast of Ho Chi Minh City. It is forecast to move west at about 10 kilometres per hour across the southern part of Vietnam. Besides, an area of low pressure is bringing unsettled weather to the seas east of the southern part of the Philippines. A tropical cyclone appears to be forming.

Weather forecast for tonight and tomorrow

Mainly cloudy with one or two light rain patches and relatively low visibility overnight. It will be slightly cooler with a minimum temperature of about 21 degrees. Bright periods tomorrow with a maximum temperature of around 25 degrees. Moderate easterly winds, becoming northerlies overnight, occasionally fresh.

Outlook : Mainly cloudy with a few rain patches midweek this week. Temperatures will fall on Wednesday night. Cooler in the following couple of days.


(The above forecast period is valid up to 23:59 HKT tomorrow, 19/11/2018; 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 21:00 HKT 18/Nov/2018

GALE WARNING AREA: TAIWAN STRAIT.

GENERAL SITUATION AT 180900 UTC:
FOR DETAILS ON TROPICAL DEPRESSION TORAJI (1827), PLEASE REFER TO THE 3-HRLY SHIPPING WARNINGS. THE NORTHEAST MONSOON IS EXPECTED TO AFFECT THE FORECAST AREAS LATER.

MARINE FORECAST FOR 24 HOURS FROM 181300 UTC:

HONG KONG= E 5-6, N 6 OVERNIGHT. DOWN TO 4000 M IN MIST OR RAIN PATCHES. SEA 2-3 M. SWELL E UP TO 2 M. TEMP 21-25 C. =
KWANGTUNG= E 5-6, UP TO 7 OVERNIGHT. DOWN TO 4000 M IN MIST OR RAIN PATCHES. SEA 2-3 M, BEC 4 M. SWELL E 2 M. =
TAIWAN STRAIT= NE 5-6, BEC 7-8. DOWN TO 4000 M IN MIST OR RAIN PATCHES. SEA 2-3 M, BEC 4-6 M. SWELL NE 2 M. =
BASHI= E 5, 6-7 LATER. LGT RAIN PATCHES. SEA 2 M, 3-4 M LATER. SWELL E 2 M. =
PRATAS= E TO NE 5-6. RAIN PATCHES. SEA 2-3 M. SWELL E 2 M. =
BALINTANG= E 5, 6-7 LATER. LGT RAIN PATCHES. SEA 2 M, 3-4 M LATER. SWELL E 2 M. =
SCARBOROUGH= E TO NE 4-5, UP TO 6 LATER. FINE. ISOL SHOWERS LATER. SEA 2 M, UP TO 3 M LATER. SWELL E TO NE 2 M. =
PARACEL= E TO NE 4-5, 6 LATER. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 2 M, 3 M LATER. SWELL E 2 M. =
TONKIN= N TO NE 6-7. DOWN TO 4000 M IN MIST OR RAIN PATCHES. SEA 3-4 M. SWELL NE UP TO 2 M. =
DANANG= E 4-5, BEC N UP TO 6. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 2 M, UP TO 3 M LATER. SWELL E 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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Bulletin issued at 19:30 HKT 18/Nov/2018

Weather information for south China coastal waters issued by the Hong Kong Observatory at 7:30 p.m. on 18 November 2018

Warnings:
Strong winds in all areas.

Weather Situation:
Pressure is rising over inland southern China. A replenishment of the northeast monsoon is expected to reach the coastal waters overnight.

At 7 p.m., Tropical Depression Toraji with maximum sustained winds of about 45 kilometres per hour near its centre was located at 11.5 degrees north, 108.4 degrees east. It is forecast to move west at about 10 kilometres per hour across the southern part of Vietnam.

Area forecasts for the next 24 hours

Hong Kong Adjacent Waters:
East force 5 to 6, north force 6 overnight.
Misty and a few rain patches.
Moderate to rough seas.

Nan'ao, Shanwei, South of Hong Kong and Shangchuan Dao:
East force 5 to 6, north up to force 7 overnight.
Moderate to rough seas.

Outlook for the next 48 hours
East to northeasterly winds of force 6 to 7.

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

Waglan Island Wind east force 1
  Visibility 15 Kilometres

Shantou Wind south force 1
  Visibility 10 Kilometres

Dongsha Wind east-northeast force 2
  Visibility 10 Kilometres

Huangmaozhou Wind east-northeast force 2

Macau Wind south force 1
  Visibility 9 Kilometres

Xisha Wind east-northeast 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 18/NOV/2018
(Next update at 01:30 HKT 19/NOV/2018)
I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     STRONG WINDS AND SEV TURB.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     PRESSURE IS RISING OVER THE NORTHERN PART OF
     SOUTHERN CHINA.  A REPLENISHMENT OF THE
     NORTHEAST MONSOON IS EXPECTED TO REACH THE
     COASTAL AREAS OVERNIGHT.
     AT 4 P.M., TROPICAL DEPRESSION TORAJI WAS
     CENTRED NEAR 11.6 DEGREES NORTH, 109.1 DEGREES
     EAST.  IT IS FORECAST TO MOVE WEST AT ABOUT 5
     KNOTS ACROSS THE SOUTHERN PART OF VIETNAM.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1800 TO 0400 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  360/10-15
       OFFSHORE:  090/15 BEC 020/15-20, OCNL 25        25-20
   B.   2000 FT:  040/15                               20-17
   C.   5000 FT:  190/10                               15
   D.  10000 FT:  260/20                               9
   E.  18000 FT:  250/35                               MS6
   F.  24000 FT:  250/45                               MS17
   G.  30000 FT:  250/55                               MS29
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      MAINLY CLOUDY WITH A FEW RAIN AND MIST PATCHES.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1200 FT  SCT 2500 FT  BKN 10000 FT.
   K. VISIBILITY    : 7 KM.  TEMPO 2000 M IN RAIN/MIST.
   L. 0 DEG. C LEVEL: 16000 FT
      10 DEG. C LEVEL(S) : 7600, 9600 FT
   M. TURBULENCE    : MOD TO SEV OFFSHORE.  MOD NEAR HILLS.
   N. SEA STATE     : 2.0-3.0 M     SEA TEMPERATURE    : 25 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE TO FRESH NORTH TO NORTHEASTERLY WINDS.
     MAINLY CLOUDY WITH A FEW RAIN AND MIST PATCHES
     IN THE MORNING.  BRIGHT PERIODS DURING THE DAY.=
===================================================================
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: <18 Nov 2018> 

TROPICAL CYCLONE WARNING FOR SHIPPING
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Tropical Cyclone Warning for Shipping

Tropical Cyclone Warning |  Track and Positions of Tropical Cyclones
Current Weather |  Local Weather Forecast |  9-day Weather Forecast
South China Coastal Waters |  Marine Forecast
Severe Weather Information Centre

Bulletin issued at 21:30 HKT 18/Nov/2018


Tropical Cyclone Warning

At 181200 UTC, Tropical Depression Toraji (1827) has weakened into an area of low pressure.

No further warnings on this area of low pressure will be issued by the Hong Kong Observatory unless regeneration takes place.




The Hong Kong Observatory's tropical cyclone warnings for shipping are issued about one and a half hours after the time of observation. They incorporate additional information derived from surface and upper-air data and may therefore be slightly different from the real-time satellite or radar-based positions given in the hourly bulletins for public.

While the forecast positions and track indicate the most likely future path of the tropical cyclone, they may deviate from the actual path taken by the storm.

Tropical Cyclone Track

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/Nov/2018
HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     23.8 C
Minimum Air Temperature                     23.1 C
Grass Minimum Temperature                   22.5 C
Relative Humidity                        82 - 94 Percent
Rainfall                                     0.5 mm 
Total rainfall since 1st January          2087.6 mm
Against an average of                     2358.4 mm

Other Stations                Min                  Max
King's Park                  22.5 C               23.5 C
Wong Chuk Hang               22.9 C               24.2 C
Ta Kwu Ling                  22.8 C               25.2 C
Lau Fau Shan                 22.2 C               24.5 C
Tai Po                       22.1 C               23.3 C
Sha Tin                      22.9 C               24.1 C
Tuen Mun                     23.1 C               25.0 C
Tseung Kwan O                22.4 C               23.5 C
Sai Kung                     23.0 C               24.2 C
Cheung Chau                  22.6 C               24.2 C
Chek Lap Kok                 22.4 C               26.2 C
Tsing Yi                     23.2 C               24.8 C
Shek Kong                    23.3 C               25.7 C
Tsuen Wan Ho Koon            22.0 C               24.4 C
Tsuen Wan Shing Mun Valley   22.9 C               24.3 C
Hong Kong Park               23.0 C               23.9 C
Shau Kei Wan                 22.4 C               23.4 C
Kowloon City                 22.4 C               23.9 C
Happy Valley                 23.2 C               24.3 C
Wong Tai Sin                 22.8 C               24.1 C
Stanley                      22.7 C               23.7 C
Kwun Tong                    22.3 C               23.6 C
Sham Shui Po                 22.9 C               25.2 C
Kai Tak Runway Park          23.0 C               24.4 C
Yuen Long Park               23.2 C               24.9 C
Tai Mei Tuk               22.2 C               23.7 C

Duration of sunshine (King's Park):              0.0 H
The mean UV index recorded at King's Park yesterday was 0.5,
the UV intensity was Low.
The maximum UV index for yesterday was 2.
 

Yesterday's (17 Nov 2018) average ambient gamma radiation
dose rate taken outdoors in Hong Kong ranged from 0.09 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                           0.09
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                        0.15

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 Nov
Last revision date: <18 Nov 2018> 

From Weather Underground