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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 16:02 HKT 09/Jan/2017

At 4 p.m. at the Hong Kong Observatory the air temperature was 21 degrees Celsius and the relative humidity 73 per cent.
During the past hour the mean UV Index recorded at King's Park was 2. The intensity of UV radiation was low.

The air temperatures at other places were:

King's Park 22 degrees;
Wong Chuk Hang 21 degrees;
Ta Kwu Ling 23 degrees;
Lau Fau Shan 22 degrees;
Tai Po 21 degrees;
Sha Tin 22 degrees;
Tuen Mun 22 degrees;
Tseung Kwan O 21 degrees;
Sai Kung 21 degrees;
Cheung Chau 20 degrees;
Chek Lap Kok 22 degrees;
Tsing Yi 23 degrees;
Shek Kong 23 degrees;
Tsuen Wan Ho Koon 22 degrees;
Tsuen Wan Shing Mun Valley 22 degrees;
Hong Kong Park 21 degrees;
Shau Kei Wan 20 degrees;
Kowloon City 23 degrees;
Happy Valley 23 degrees;
Wong Tai Sin 22 degrees;
Stanley 20 degrees;
Kwun Tong 21 degrees;
Sham Shui Po 23 degrees;
Kai Tak Runway Park 21 degrees;
Yuen Long Park 23 degrees;
Tai Mei Tuk 22 degrees.

Here is the information on Tropical Depression at 4 p.m.:
Location: 10.2 degrees north, 124.0 degrees east.


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


Climatological Information for 9 Jan

Regional Weather in Hong Kong

Information on Tropical Cyclones

Hong Kong Climatology


Local Weather Forecast
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Bulletin updated at 16:15 HKT 09/Jan/2017

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

The northeast monsoon is bringing slightly cooler weather to the coastal areas of Guangdong. Locally, temperatures over the territory in the afternoon were generally three to four degrees lower than those of yesterday.

At 4 p.m., the tropical depression over the southern part of the Philippines was centred about 580 kilometres southeast of Manila. It is forecast to move west or west-southwest at about 14 kilometres per hour across the Philippines.

Weather forecast for tonight and tomorrow

Mainly cloudy. Visibility relatively low in some areas at first. The minimum temperature tomorrow morning will be about 18 degrees in the urban areas and a couple of degrees lower in the New Territories. Sunny periods during the day with a maximum temperature of around 21 degrees. Moderate to fresh easterly winds, occasionally strong offshore tomorrow.

Outlook : Windier and slightly cooler on Wednesday. Even cooler with a few rain patches in the latter part of this week.


(The above forecast period is valid up to 23:59 HKT tomorrow, 10/01/2017; Regular update at : around 45 minutes past each hour, 16:15 HKT and 23:15 HKT)

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MARINE FORECAST
Traditional Chinese Simplified Chinese

Marine Forecast

Weather Information for the Marine Community

Bulletin issued at 09:00 HKT 09/Jan/2017

N0 WARNING.

GENERAL SITUATION AT 082100 UTC:
THE NORTHEAST MONSOON IS AFFECTING THE FORECAST AREAS. FOR DETAILS ON TROPICAL DEPRESSION OVER SOUTHERN PART OF THE PHILIPPINES, PLEASE REFER TO THE 3-HRLY SHIPPING WARNINGS.

MARINE FORECAST FOR 24 HOURS FROM 090100 UTC:

HONG KONG= NE 5-6, E 6 LATER. CLD. SEA 2-3 M. TEMP 23-17 C. =
KWANGTUNG= E TO NE 5-6, UP TO 7 IN E. CLD. SEA 2-3 M, UP TO 4 M IN E. =
TAIWAN STRAIT= NE 6-7. CLD. SEA 3-4 M. SWELL NE 2 M. =
BASHI= NE 6-7. CLD. SEA 3-4 M. SWELL NE 2 M. =
PRATAS= NE 6-7. CLD. SEA 3-4 M. SWELL NE 2 M. =
BALINTANG= NE 6-7. CLD. SEA 3-4 M. SWELL NE 2 M. =
SCARBOROUGH= NE 6-7. ISOL SHOWERS. SEA 3-4 M. SWELL NE 2 M. =
PARACEL= NE 5-6. FINE. SEA 2-3 M. =
TONKIN= E TO NE 4-5, OCNL 6. CLD. SEA 2 M. =
DANANG= NE 4-5, OCNL 6. CLD. SEA 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.


  • Map showing the 10 forecast areas
  • Tidal Information

    • 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 16:30 HKT 09/Jan/2017

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 4:30 p.m. on 09 January 2017

    Warnings:
    Strong winds in all areas.

    Weather Situation:
    The northeast monsoon is affecting the south China coastal waters.

    At 4 p.m., the tropical depression over the southern part of the Philippines with maximum sustained winds of about 45 kilometres per hour near its centre was located at 10.2 degrees north, 124.0 degrees east. It is forecast to move west or west-southwest at about 14 kilometres per hour across the Philippines.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    East to northeast force 4 to 5, up to force 6 later.
    Visibility relatively low in some areas at first.
    Moderate seas, becoming rough later.

    Nan'ao and Shanwei:
    East to northeast force 6 to 7.
    Rough seas.

    South of Hong Kong:
    East to northeast force 5 to 6, up to force 7 later.
    Moderate to rough seas.

    Shangchuan Dao:
    East to northeast force 5 to 6.
    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 3
      Visibility 10 Kilometres

    Shantou Wind east force 1
      Visibility 15 Kilometres

    Huangmaozhou Wind east-northeast force 4

    Macau Wind north-northeast force 2
      Visibility 8 Kilometres

    Xisha Wind east-northeast force 2
      Visibility 6 Kilometres in showers

  • Explanation of Seas or Sea Waves
  • Explanation of Swells
  • Descriptive Terms of Wind Speeds
  • Visibility Readings in Hong Kong Waters
  • Map showing forecast areas
  • Tidal Information

    • WEATHER FORECAST FOR LOCAL AVIATION
    Traditional Chinese Simplified Chinese

    Weather Forecast for Local Aviation

    Bulletin issued at 09:00 HKT 09/JAN/2017
    (Next update at 17:30 HKT 09/JAN/2017)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     STRONG WINDS AND SEV TURB.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     THE NORTHEAST MONSOON IS AFFECTING THE COASTAL
     AREAS OF GUANGDONG.
     AT 9 A.M., THE TROPICAL DEPRESSION OVER THE
     SOUTHERN PART OF THE PHILIPPINES WAS CENTRED
     NEAR 10.1 DEGREES NORTH, 124.6 DEGREES EAST. IT
     IS FORECAST TO MOVE WEST AT ABOUT 8 KNOTS ACROSS
     THE PHILIPPINES.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1000 TO 2000 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  060/10-15
       OFFSHORE:  060/15-20, OCNL 25                   19-23
   B.   2000 FT:  090/15-20                            14
   C.   5000 FT:  020/10
                  BEC 090/10                           11
   D.  10000 FT:  270/20                               7
   E.  18000 FT:  260/30                               MS5
   F.  24000 FT:  260/45                               MS16
   G.  30000 FT:  260/55                               MS29
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      SUNNY PERIODS.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 2500 FT SCT 3500 FT.
   K. VISIBILITY    : 8 KM.
   L. 0 DEG. C LEVEL: 16000 FT      10 DEG. C LEVEL(S) : 6600 FT
   M. TURBULENCE    : MOD TO SEV OFFSHORE AND NEAR HILLS
   N. SEA STATE     : 2.0-3.0 M     SEA TEMPERATURE    : 20 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE TO FRESH EASTERLIES, OCCASIONALLY
     STRONG OFFSHORE. MAINLY CLOUDY WITH A FEW RAIN
     PATCHES.=

    ===================================================================
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 10:50 HKT on 30 Dec 16

    VHHK SIGMET 1 VALID 300250/300650 VHHH- VHHK HONG KONG FIR SEV ICE FCST WI N1800 E11248 - N1930 E11130 - N2130 E11130 - N2230 E11500 - N2200 E11500 - N1800 E11248 FL240/300 STNR 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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    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 15:30 HKT 09/Jan/2017


    Tropical Cyclone Warning

    At 090600 UTC, the tropical depression over the southern part of the Philippines with central pressure 1002 hectopascals was centred within 90 nautical miles of one zero point two degrees north (10.2 N) one two four point three degrees east (124.3 E) and is forecast to move west or west-southwest at about 8 knots for the next 24 hours.

    Maximum winds near the centre are estimated to be 25 knots.

    Radius of over 2 metre waves 60 nautical miles.

    Forecast position and intensity at 100600 UTC
    Eight point one degrees north (8.1 N)
    One two zero point two degrees east (120.2 E)
    Maximum winds 25 knots.

    Forecast position and intensity at 110600 UTC
    Nine point seven degrees north (9.7 N)
    One one six point six degrees east (116.6 E)
    Maximum winds 25 knots.

    Forecast position and intensity at 120600 UTC
    One one point two degrees north (11.2 N)
    One one two point four degrees east (112.4 E)
    Maximum winds 25 knots.

    Forecast position and intensity at 130600 UTC
    One zero point nine degrees north (10.9 N)
    One one zero point six degrees east (110.6 E)
    Maximum winds 25 knots.

    Forecast position and intensity at 140600 UTC
    One zero point five degrees north (10.5 N)
    One zero nine point two degrees east (109.2 E)
    Maximum winds 25 knots.



    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 09/Jan/2017 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     25.5 C
Minimum Air Temperature                     20.5 C
Grass Minimum Temperature                   18.5 C
Relative Humidity                        64 - 85 Percent
Rainfall                                       0 mm 
Total rainfall since 1st January               0 mm
Against an average of                        6.7 mm

Other Stations                Min                  Max
King's Park                  19.5 C               25.9 C
Wong Chuk Hang               18.1 C               24.7 C
Ta Kwu Ling                  17.3 C               27.8 C
Lau Fau Shan                 18.9 C               25.4 C
Tai Po                       18.7 C               26.1 C
Sha Tin                      18.0 C               26.5 C
Tuen Mun                     19.2 C               27.8 C
Tseung Kwan O                17.7 C               27.3 C
Sai Kung                     18.8 C               25.3 C
Cheung Chau                  19.2 C               24.2 C
Chek Lap Kok                 20.5 C               26.1 C
Tsing Yi                     18.8 C               26.4 C
Shek Kong                    18.0 C               27.3 C
Tsuen Wan Ho Koon            18.3 C               26.4 C
Tsuen Wan Shing Mun Valley   18.3 C               27.8 C
Hong Kong Park               19.3 C               26.8 C
Shau Kei Wan                 19.1 C               25.6 C
Kowloon City                 19.5 C               28.8 C
Happy Valley                 18.7 C               27.7 C
Wong Tai Sin                 19.3 C               28.8 C
Stanley                      18.8 C               24.2 C
Kwun Tong                    20.2 C               27.8 C
Sham Shui Po                 19.9 C               27.2 C
Kai Tak Runway Park          19.9 C               26.4 C
Yuen Long Park               18.2 C               28.1 C
Tai Mei Tuk               19.0 C               26.7 C

Duration of sunshine (King's Park):              8.2 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 4.
Sea surface temperature (Waglan Island):        21.0 C 

Yesterday's (08 Jan 2017) 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                               0.10
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                         0.15
Tsim Bei Tsui                       0.13
Cape D'Aguilar                      0.14
Chek Lap Kok                        0.15

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 08 Jan
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