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

Local Weather Forecast | Regional Temperature Forecast in HK
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Bulletin issued at 01:02 HKT 10/Jan/2017

At 1 a.m. at the Hong Kong Observatory the air temperature was 20 degrees Celsius and the relative humidity 80 per cent.

The air temperatures at other places were:

King's Park 19 degrees;
Wong Chuk Hang 19 degrees;
Ta Kwu Ling 19 degrees;
Lau Fau Shan 19 degrees;
Tai Po 19 degrees;
Sha Tin 19 degrees;
Tuen Mun 20 degrees;
Tseung Kwan O 19 degrees;
Sai Kung 19 degrees;
Cheung Chau 19 degrees;
Chek Lap Kok 21 degrees;
Tsing Yi 20 degrees;
Shek Kong 20 degrees;
Tsuen Wan Ho Koon 18 degrees;
Tsuen Wan Shing Mun Valley 19 degrees;
Hong Kong Park 19 degrees;
Shau Kei Wan 19 degrees;
Kowloon City 19 degrees;
Happy Valley 20 degrees;
Wong Tai Sin 19 degrees;
Stanley 19 degrees;
Kwun Tong 19 degrees;
Sham Shui Po 20 degrees;
Kai Tak Runway Park 20 degrees;
Yuen Long Park 20 degrees;
Tai Mei Tuk 19 degrees.


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


Climatological Information for 10 Jan

Regional Weather in Hong Kong

Information on Tropical Cyclones

Hong Kong Climatology


Local Weather Forecast
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Bulletin updated at 00:45 HKT 10/Jan/2017

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

The northeast monsoon brought slightly cooler weather to the coastal areas of Guangdong yesterday. Locally, it was mainly cloudy. There were sunny intervals during the day. Temperatures over the territory in the afternoon were generally three to four degrees lower than those of the day before. The northeast monsoon will continue to affect Guangdong in the next couple of days. It will be slightly cooler over the region.

At 11 p.m. last night, the tropical depression over the southern part of the Philippines was centred about 580 kilometres south-southeast of Manila. It is forecast to move southwest or west-southwest at about 18 kilometres per hour across the Philippines.

Weather forecast for Hong Kong

Mainly cloudy. The minimum temperature in the 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.

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 today, 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 21:00 HKT 09/Jan/2017

N0 WARNING.

GENERAL SITUATION AT 090900 UTC:
THE NORTHEAST MONSOON IS AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 091300 UTC:

HONG KONG= E TO NE 5-6. CLD. SEA 2-3 M. TEMP 18-21 C. =
KWANGTUNG= E TO NE 5-6, UP TO 7 IN E. CLD. SEA 2-3 M, UP TO 4 M IN E. SWELL NE 2 M. =
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= E TO 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= E TO NE 5-6. CLD. SEA 2-3 M. =
TONKIN= E TO NE 4-5, OCNL 6. RAIN PATCHES. SEA 2 M. =
DANANG= E TO NE 4-5, OCNL 6. RAIN PATCHES. 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 23:30 HKT 09/Jan/2017

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 11:30 p.m. on 09 January 2017

    Warnings:
    Strong winds in all areas.

    Weather Situation:
    The northeast monsoon is affecting the south China coastal waters. Besides, the tropical depression over the southern part of the Philippines will move across the Philippines towards the southern part of the South China Sea in the next couple of days.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    East to northeast force 5 to 6.
    Moderate to rough seas.

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

    South of Hong Kong:
    East to northeast force 5 to 6, occasionally force 7.
    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-northeast force 5
      Visibility 10 Kilometres

    Shantou Wind east force 2
      Visibility 13 Kilometres

    Huangmaozhou Wind east force 5

    Macau Wind east-southeast force 2
      Visibility 4900 Metres in mist

    Xisha Wind east-northeast force 3
      Visibility 17 Kilometres

  • 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 01:30 HKT 10/JAN/2017
    (Next update at 9:00-9:30 HKT 10/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 SOUTH
     CHINA COASTAL AREAS. 
     BESIDES, THE TROPICAL DEPRESSION OVER THE
     SOUTHERN PART OF THE PHILIPPINES WILL MOVE
     ACROSS THE PHILIPPINES TOWARDS THE SOUTHERN PART
     OF THE SOUTH CHINA SEA IN THE NEXT COUPLE OF
     DAYS.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 0200 TO 1200 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  080/10-15
       OFFSHORE:  080/15-20. OCNL 25                   18-23
   B.   2000 FT:  080/15-20, OCNL 25                   14
   C.   5000 FT:  140/10                               13
   D.  10000 FT:  270/20                               7
   E.  18000 FT:  270/35                               MS7
   F.  24000 FT:  260/40                               MS16
   G.  30000 FT:  260/55                               MS31
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      2700 - 3300 FT
   I. WEATHER       : 
      MAINLY CLOUDY. SUNNY PERIODS DURING THE DAY.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 2000 FT  SCT 3000 FT.
   K. VISIBILITY    : 7 KM.
   L. 0 DEG. C LEVEL: 16500 FT      10 DEG. C LEVEL(S) : 6200 FT
   M. TURBULENCE    : MOD TO SEV OFFSHORE AND NEAR HILLS.
   N. SEA STATE     : 1.5-2.5 M     SEA TEMPERATURE    : 20 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE TO FRESH EASTERLY WINDS, OCCASIONALLY
     STRONG OFFSHORE. SUNNY 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.

    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 18:30 HKT 09/Jan/2017


    Tropical Cyclone Warning

    At 090900 UTC, the tropical depression over the southern part of the Philippines with central pressure 1002 hectopascals was centred within 90 nautical miles of nine point nine degrees north (9.9 N) one two three point nine degrees east (123.9 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.

    No further warnings on this Tropical Depression will be issued by the Hong Kong Observatory unless it re-enters the Hong Kong area of responsibility.

    Forecast position and intensity at 100900 UTC
    Eight point two degrees north (8.2 N)
    One one nine point nine degrees east (119.9 E)
    Maximum winds 25 knots.

    Forecast position and intensity at 110900 UTC
    One zero point zero degrees north (10.0 N)
    One one six point zero degrees east (116.0 E)
    Maximum winds 25 knots.

    Forecast position and intensity at 120900 UTC
    One one point two degrees north (11.2 N)
    One one two point two degrees east (112.2 E)
    Maximum winds 25 knots.

    Forecast position and intensity at 130900 UTC
    One zero point nine degrees north (10.9 N)
    One one zero point four degrees east (110.4 E)
    Maximum winds 25 knots.

    Forecast position and intensity at 140900 UTC
    Dissipated over sea.



    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 10/Jan/2017 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     21.8 C
Minimum Air Temperature                     19.7 C
Grass Minimum Temperature                   18.1 C
Relative Humidity                        72 - 82 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                  18.9 C               22.3 C
Wong Chuk Hang               18.4 C               21.9 C
Ta Kwu Ling                  15.5 C               23.9 C
Lau Fau Shan                 17.2 C               23.0 C
Tai Po                       18.0 C               22.6 C
Sha Tin                      17.4 C               23.0 C
Tuen Mun                     18.7 C               23.9 C
Tseung Kwan O                17.6 C               22.1 C
Sai Kung                     18.8 C               21.5 C
Cheung Chau                  18.4 C               20.7 C
Chek Lap Kok                 19.5 C               23.3 C
Tsing Yi                     18.6 C               22.8 C
Shek Kong                    17.2 C               24.0 C
Tsuen Wan Ho Koon            16.9 C               22.5 C
Tsuen Wan Shing Mun Valley   17.6 C               22.4 C
Hong Kong Park               18.4 C               21.4 C
Shau Kei Wan                 18.4 C               21.4 C
Kowloon City                 18.6 C               23.4 C
Happy Valley                 18.6 C               23.1 C
Wong Tai Sin                 19.0 C               22.5 C
Stanley                      18.9 C               20.9 C
Kwun Tong                    18.9 C               21.8 C
Sham Shui Po                 19.4 C               24.0 C
Kai Tak Runway Park          19.6 C               22.7 C
Yuen Long Park               17.9 C               23.9 C
Tai Mei Tuk               18.3 C               23.1 C

Duration of sunshine (King's Park):              3.1 H
The mean UV index recorded at King's Park yesterday was 1,
the UV intensity was Low.
The maximum UV index for yesterday was 3.
Sea surface temperature (Waglan Island):        20.6 C 

Yesterday's (09 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                         0.11
Kwun Tong                           0.12
Sai Wan Ho                          0.10
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 09 Jan
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