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Bulletin issued at 15:02 HKT 06/Oct/2016

At 3 p.m. at the Hong Kong Observatory the air temperature was 31 degrees Celsius and the relative humidity 65 per cent.
During the past hour the mean UV Index recorded at King's Park was 4. The intensity of UV radiation was moderate.

Tropical cyclone Aere will move across the northern part of the South China Sea in the next few days. Besides, the northeast monsoon will persist over southern China. As the circulation of the tropical cyclone is relatively small and compact, it will only bring significant impact to local weather when it gets relatively close to Hong Kong. The movement and intensity change of Aere over the northern part of the South China Sea remain uncertain for the time being, and its interaction with the northeast monsoon is also a determining factor. According to the present forecast track, the Hong Kong Observatory will consider issuing the Standby Signal, No. 1 tonight.

Hot weather might cause adverse health effects. The Observatory advises the public to stay on the alert.

The air temperatures at other places were:

King's Park 32 degrees;
Wong Chuk Hang 32 degrees;
Ta Kwu Ling 32 degrees;
Lau Fau Shan 30 degrees;
Tai Po 30 degrees;
Sha Tin 32 degrees;
Tuen Mun 33 degrees;
Tseung Kwan O 31 degrees;
Sai Kung 31 degrees;
Cheung Chau 32 degrees;
Chek Lap Kok 31 degrees;
Tsing Yi 31 degrees;
Shek Kong 32 degrees;
Tsuen Wan Ho Koon 31 degrees;
Tsuen Wan Shing Mun Valley 31 degrees;
Hong Kong Park 31 degrees;
Shau Kei Wan 32 degrees;
Kowloon City 33 degrees;
Happy Valley 33 degrees;
Wong Tai Sin 33 degrees;
Stanley 32 degrees;
Kwun Tong 32 degrees;
Sham Shui Po 32 degrees;
Kai Tak Runway Park 32 degrees;
Yuen Long Park 33 degrees.

Here is the information on Tropical Depression Aere at noon:
Location: 20.6 degrees north, 119.6 degrees east.


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


Climatological Information for 6 Oct

Regional Weather in Hong Kong

Information on Tropical Cyclones

Hong Kong Climatology


Local Weather Forecast
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Bulletin updated at 14:45 HKT 06/Oct/2016

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

The northeast monsoon is affecting southern China.

At noon, Tropical Depression Aere was centred about 300 kilometres east of Dongsha. It is forecast to move west at about 20 kilometres per hour across the Luzon Strait.

Weather forecast for this afternoon and tonight

Hot with sunny periods in the afternoon. There will be a few showers later. Moderate northeasterly winds.

Outlook : Sunny intervals tomorrow. Windier with a few rain patches over the weekend and early next week.


(The above forecast period is valid up to 23:59 HKT today, 06/10/2016; 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 09:00 HKT 06/Oct/2016

GALE WARNING AREAS: KWANGTUNG, TAIWAN STRAIT, BASHI, PRATAS AND BALINTANG.

GENERAL SITUATION AT 052100 UTC:
FOR DETAILS ON TROPICAL DEPRESSION AERE (1619), PLEASE REFER TO THE 3-HRLY SHIPPING WARNINGS.

MARINE FORECAST FOR 24 HOURS FROM 060100 UTC:

HONG KONG= NE 4-5, OCNL 6. ISOL SHOWERS AND TS. SEA 2 M. TEMP 32-26 C. =
KWANGTUNG= NE 5, OCNL 6, 7-8 IN E LATER. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS LATER. SEA 2 M, 4-6 M IN E LATER. =
TAIWAN STRAIT= NE 6-7, OCNL 8. ISOL SHOWERS AND TS. SEA UP TO 6 M. SWELL NE 2 M. =
BASHI= CYCLONIC 7-8, 9 LATER. DOWN TO 1000 M IN OCNL SQUALLY SHOWERS AND TS. SEA 4-6 M, 8 M LATER. SWELL NE 2-3 M. =
PRATAS= NE 5-6, CYCLONIC 8-9 LATER. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 2-3 M, UP TO 8 M LATER. SWELL NE 2-3 M LATER. =
BALINTANG= SE 7-8, 6 LATER. DOWN TO 1000 M IN OCNL SQUALLY SHOWERS AND TS. SEA 3-6 M. SWELL NE 2-3 M. =
SCARBOROUGH= S 5, OCNL 6. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 2 M. =
PARACEL= N TO NE 4-5, OCNL 6. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 2 M. =
TONKIN= NE 4-5. ISOL SHOWERS. SEA UP TO 2 M. =
DANANG= NE 4-5. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. 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.


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    • 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 12:30 HKT 06/Oct/2016

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 12:30 p.m. on 06 October 2016

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

    Weather Situation:
    At noon, Tropical Depression Aere with maximum sustained winds of about 55 kilometres per hour near its centre was located at 20.6 degrees north, 119.6 degrees east, it is forecast to move west at about 20 kilometres per hour across the Luzon Strait.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    Northeast force 4 to 5, occasionally force 6.
    Isolated showers and thunderstorms.
    Moderate to rough seas.

    Nan'ao:
    Northeast force 5 to 6, force 7 later.
    Isolated showers and thunderstorms.
    Moderate to rough seas.

    Shanwei and South of Hong Kong:
    Northeast force 5, occasionally force 6.
    Isolated showers and thunderstorms.
    Moderate to rough seas.

    Shangchuan Dao:
    Northeast force 4 to 5.
    Isolated showers and thunderstorms.
    Moderate seas.

    Outlook for the next 48 hours
    Northeasterly winds of force 5 to 6, occasionally force 7. Scattered squally showers and thunderstorms.

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

    Waglan Island Wind north-northeast force 3
      Visibility 18 Kilometres

    Shantou Wind east-northeast force 1
      Visibility 30 Kilometres

    Huangmaozhou Wind north force 2

    Macau Wind north-northeast force 3
      Visibility 7 Kilometres

    Xisha Wind east force 3
      Visibility 30 Kilometres

  • Explanation of Seas or Sea Waves
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    • WEATHER FORECAST FOR LOCAL AVIATION
    Traditional Chinese Simplified Chinese

    Weather Forecast for Local Aviation

    Bulletin issued at 09:30 HKT 06/OCT/2016
    (Next update at 17:30 HKT 06/OCT/2016)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     ISOL CUNIM/TS AND ASSOCIATED HAZARDS.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     THE WEATHER IS MAINLY FINE OVER THE COAST OF GUANGDONG. 
     AT 9 A.M., TROPICAL DEPRESSION AERE WAS CENTRED NEAR 20.6
     DEGREES NORTH, 120.5 DEGREES EAST. IT IS FORECAST TO MOVE  
     WEST AT ABOUT 12 KNOTS ACROSS LUZON STRAIT.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1000 TO 2000 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  030/5-10
                  TEMPO VRB/15G25 IN TS
       OFFSHORE:  030/10-15                            29-33
   B.   2000 FT:  050/15-20                            23
   C.   5000 FT:  050/15                               18
   D.  10000 FT:  060/15                               10
   E.  18000 FT:  080/10                               MS2
   F.  24000 FT:  160/10                               MS13
   G.  30000 FT:  120/10                               MS25
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL
   I. WEATHER       : 
      SUNNY PERIODS. A FEW SHOWERS AND ISOLATED THUNDERSTORMS.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 2500 FT 
      TEMPO FEW CB 1000 FT SCT 2000 FT
   K. VISIBILITY    : 10 KM. TEMPO 4000 M IN SHOWERS. 
                      TEMPO 2000 M IN TS.
   L. 0 DEG. C LEVEL: 16500 FT      10 DEG. C LEVEL(S) : 10000 FT
   M. TURBULENCE    : MOD TO SEV NEAR CUNIM/TS.
                      MOD OFFSHORE AND NEAR HILLS.
   N. SEA STATE     : 1.5-2.0 M     SEA TEMPERATURE    : 28 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE NORTHEASTERLY WINDS. CLOUDY PERIODS AT NIGHT.
     A FEW ISOLATED SHOWERS.=

    ===================================================================
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 15:40 HKT on 06 Oct 16

    VHHK SIGMET 4 VALID 060740/061140 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N2306 E11542 - N2342 E11730 - N2200 E11730 - N2200 E11542 - N2306 E11542 TOP FL400 MOV W 05KT 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

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    Bulletin issued at 15:30 HKT 06/Oct/2016


    Tropical Cyclone Warning

    At 060600 UTC, Tropical Depression Aere (1619) with central pressure 998 hectopascals was centred within 90 nautical miles of two zero point six degrees north (20.6 N) one one eight point nine degrees east (118.9 E) and is forecast to move west at about 10 knots for the next 24 hours.

    Maximum winds near the centre are estimated to be 30 knots.

    Radius of over 2 metre waves 120 nautical miles.

    Forecast position and intensity at 070600 UTC
    Two zero point five degrees north (20.5 N)
    One one six point five degrees east (116.5 E)
    Maximum winds 45 knots.

    Forecast position and intensity at 080600 UTC
    Two zero point five degrees north (20.5 N)
    One one six point one degrees east (116.1 E)
    Maximum winds 60 knots.

    Forecast position and intensity at 090600 UTC
    Two zero point four degrees north (20.4 N)
    One one five point seven degrees east (115.7 E)
    Maximum winds 60 knots.

    Forecast position and intensity at 100600 UTC
    Two zero point zero degrees north (20.0 N)
    One one four point four degrees east (114.4 E)
    Maximum winds 45 knots.

    Forecast position and intensity at 110600 UTC
    One nine point one degrees north (19.1 N)
    One one one point two degrees east (111.2 E)
    Maximum winds 40 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 06/Oct/2016 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     31.9 C
Minimum Air Temperature                     26.9 C
Grass Minimum Temperature                   26.1 C
Relative Humidity                        66 - 87 Percent
Rainfall                                      Trace 
Total rainfall since 1st January          2360.2 mm
Against an average of                     2262.0 mm

Other Stations                Min                  Max
King's Park                  26.3 C               32.5 C
Wong Chuk Hang               25.4 C               31.3 C
Ta Kwu Ling                  25.4 C               32.4 C
Lau Fau Shan                 24.7 C               31.7 C
Tai Po                       25.8 C               30.4 C
Sha Tin                      25.4 C               31.1 C
Tuen Mun                     25.8 C               31.3 C
Tseung Kwan O                25.2 C               31.7 C
Sai Kung                     26.3 C               30.2 C
Cheung Chau                  25.8 C               29.9 C
Chek Lap Kok                 27.4 C               31.9 C
Tsing Yi                     26.1 C               32.1 C
Shek Kong                    25.2 C               32.5 C
Tsuen Wan Ho Koon            24.3 C               30.5 C
Tsuen Wan Shing Mun Valley   25.0 C               31.5 C
Hong Kong Park               26.1 C               31.1 C
Shau Kei Wan                 26.0 C               31.5 C
Kowloon City                 26.2 C               31.8 C
Happy Valley                 26.2 C               32.3 C
Wong Tai Sin                 26.4 C               32.6 C
Stanley                      26.4 C               30.8 C
Kwun Tong                    26.6 C               31.6 C
Sham Shui Po                 26.7 C               32.1 C
Kai Tak Runway Park          27.2 C               31.5 C
Yuen Long Park               25.0 C               31.9 C

Duration of sunshine (King's Park):              5.7 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 9.
 

Yesterday's (05 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                               0.09
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 05 Oct
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