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

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Bulletin issued at 07:02 HKT 11/Oct/2016

At 7 a.m. at the Hong Kong Observatory the air temperature was 22 degrees Celsius and the relative humidity 87 per cent.

The air temperatures at other places were:

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

Between 5:45 and 6:45 a.m., the rainfall recorded in various regions were:

Islands District 0 to 2 mm;
Southern District 0 to 1 mm;
Central & Western District 0 to 1 mm;
Eastern District 0 to 1 mm;
Sha Tin 0 to 1 mm;
Wan Chai 0 to 1 mm.


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


Climatological Information for 11 Oct

Regional Weather in Hong Kong

Information on Tropical Cyclones

Hong Kong Climatology


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

Current Weather | Regional Temperature Forecast in HK |  9-day Weather Forecast
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Bulletin updated at 06:45 HKT 11/Oct/2016

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

The northeast monsoon is affecting southern China. Besides, a band of clouds associated with the remnants of Aere is covering the coast of southeastern China. Locally, temperatures over many places this morning were two degrees lower than those of yesterday.

Weather forecast for today

Mainly cloudy with a few rain patches. Bright periods during the day. The maximum temperature will be about 27 degrees. Moderate to fresh northeasterly winds, occasionally strong offshore later.

Outlook : Occasional rain tomorrow, windy offshore. Weather improving in the latter part of this week.


(The above forecast period is valid up to 23:59 HKT today, 11/10/2016; 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 10/Oct/2016

GALE WARNING AREAS: KWANGTUNG, TAIWAN STRAIT AND PRATAS.

GENERAL SITUATION AT 100900 UTC:
FOR DETAILS ON TROPICAL DEPRESSION AERE (1619), PLEASE REFER TO THE 3-HRLY SHIPPING WARNINGS.

MARINE FORECAST FOR 24 HOURS FROM 101300 UTC:

HONG KONG= N TO NE 4-5, OCNL 6. RAIN PATCHES. SEA 2 M. TEMP 23-27 C. =
KWANGTUNG= N TO NE 6-7, UP TO 8 IN E. ISOL SHOWERS AND TS. SEA 3-4 M, UP TO 6 M IN E. SWELL NE 2-3 M. =
TAIWAN STRAIT= NE 7-8. ISOL SHOWERS AND TS. SEA 4-6 M. SWELL NE 3 M. =
BASHI= E TO SE 5-6. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 2-3 M. =
PRATAS= N TO NE 7-8 IN W, SE 6-7 IN E. ISOL SHOWERS AND TS. SEA UP TO 6 M. SWELL NE 3 M. =
BALINTANG= E TO SE 5-6. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 2-3 M. =
SCARBOROUGH= S TO SE 5-6. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 2-3 M. SWELL SW 2 M. =
PARACEL= NE 4-5, OCNL 6. ISOL SHOWERS AND SQUALLY TS. SEA 2 M. SWELL NE 2 M. =
TONKIN= NE 4-5. LGT RAIN PATCHES. SEA UP TO 2 M. =
DANANG= NE 4-5. ISOL SHOWERS. 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.


  • 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 05:30 HKT 11/Oct/2016

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 5:30 a.m. on 11 October 2016

    Warnings:
    Gale force winds in Nan'ao and Shanwei. Strong winds in Hong Kong adjacent waters, south of Hong Kong and Shangchuan Dao.

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

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    North to northeast force 4 to 5, occasionally force 6.
    A few rain patches.
    Moderate to rough seas.

    Nan'ao and Shanwei:
    North to northeast force 7 to 8.
    Isolated showers and thunderstorms.
    Rough to very rough seas.

    South of Hong Kong:
    North to northeast force 6 to 7.
    Rough seas.

    Shangchuan Dao:
    North 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, up to force 8 in east. Isolated showers and thunderstorms.

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

    Waglan Island Wind north force 5
      Visibility 17 Kilometres

    Shantou Wind south force 1
      Visibility 16 Kilometres

    Dongsha Wind south force 3
      Visibility 10 Kilometres

    Huangmaozhou Wind north force 4

    Macau Wind north-northeast force 3
      Visibility 14 Kilometres

    Xisha Wind east-northeast force 2
      Visibility 30 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 11/OCT/2016
    (Next update at 9:00-9:30 HKT 11/OCT/2016)
    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 SOUTHERN
     CHINA.  LAST NIGHT, TROPICAL DEPRESSION AERE
     OVER THE NORTHERN PART OF THE SOUTH CHINA SEA
     HAS WEAKENED INTO AN AREA OF LOW PRESSURE.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 0200 TO 1200 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  020/10-15
       OFFSHORE:  020/15-20                            24-29
   B.   2000 FT:  010/15-20, OCNL 25                   19
   C.   5000 FT:  060/10-15                            16
   D.  10000 FT:  050/10-15                            9
   E.  18000 FT:  050/10                               MS3
   F.  24000 FT:  060/10                               MS14
   G.  30000 FT:  070/10                               MS27
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      2800 - 3000 ; 3100 - 3300 FT
   I. WEATHER       : 
      MAINLY CLOUDY WITH A FEW RAIN PATCHES. BRIGHT
      PERIODS DURING THE DAY.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 2500 FT SCT 3500 FT
   K. VISIBILITY    : 10 KM.  TEMPO 4000 M IN RAIN.
   L. 0 DEG. C LEVEL: 17000 FT      10 DEG. C LEVEL(S) : 9900, 10500, 11000 FT
   M. TURBULENCE    : MOD TO SEV NEAR HILLS, MOD OFFSHORE.
   N. SEA STATE     : 2.0-2.5 M     SEA TEMPERATURE    : 28 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE TO FRESH NORTH TO NORTHEASTERLY WINDS,
     OCCASIONALLY STRONG ON HIGH GROUNDS.  BRIGHT
     PERIODS AND 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 15:05 HKT on 10 Oct 16

    VHHK SIGMET 5 VALID 100705/101105 VHHH- VHHK HONG KONG FIR EMBD TS FCST S OF LINE N1800 E11254 - N1800 E11506 TOP FL450 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.

    The latest report on Tropical Cyclone Aere broadcast by Dr LEE TSZ CHEUNG , Senior Scientific Officer of the Hong Kong Observatory at 6:18 p.m. on 08 Oct 2016.
    Listen Listen

    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 21:30 HKT 10/Oct/2016


    Tropical Cyclone Warning

    Tropical Depression Aere (1619) has weakened into an area of low pressure with central pressure 1002 hectopascals. At 101200 UTC, it was centred within 90 nautical miles of two one point two degrees north (21.2 N) one one six point six degrees east (116.6 E).

    Maximum winds near the centre are estimated to be 20 knots.

    No further warnings on this area of low pressure will be issued by the Hong Kong Observatory unless re-intensification 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 11/Oct/2016 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     28.1 C
Minimum Air Temperature                     23.5 C
Grass Minimum Temperature                   23.8 C
Relative Humidity                        61 - 77 Percent
Rainfall                                       0 mm 
Total rainfall since 1st January          2394.2 mm
Against an average of                     2275.8 mm

Other Stations                Min                  Max
King's Park                  22.8 C               27.9 C
Wong Chuk Hang               22.9 C               27.9 C
Ta Kwu Ling                  22.3 C               28.7 C
Lau Fau Shan                 22.0 C               28.8 C
Tai Po                       22.8 C               27.0 C
Sha Tin                      22.7 C               28.1 C
Tuen Mun                     23.3 C               29.5 C
Tseung Kwan O                21.7 C               29.2 C
Sai Kung                     22.9 C               27.0 C
Cheung Chau                  22.3 C               29.1 C
Chek Lap Kok                 24.1 C               31.3 C
Tsing Yi                     22.5 C               28.8 C
Shek Kong                    22.6 C               29.5 C
Tsuen Wan Ho Koon            21.6 C               26.5 C
Tsuen Wan Shing Mun Valley   21.7 C               28.5 C
Hong Kong Park               23.4 C               29.0 C
Shau Kei Wan                 22.7 C               28.8 C
Kowloon City                 22.5 C               29.2 C
Happy Valley                 23.9 C               29.5 C
Wong Tai Sin                 23.0 C               29.2 C
Stanley                      23.5 C               29.3 C
Kwun Tong                    22.9 C               28.1 C
Sham Shui Po                 23.3 C               29.7 C
Kai Tak Runway Park          23.6 C               28.6 C
Yuen Long Park               22.8 C               29.6 C

Duration of sunshine (King's Park):              6.8 H
The mean UV index recorded at King's Park yesterday was 4,
the UV intensity was Moderate.
The maximum UV index for yesterday was 9.
 

Yesterday's (10 Oct 2016) 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                         0.13
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 during
the period 1987-2015, 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 10 Oct
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