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Bulletin issued at 15:02 HKT 27/Sep/2016

At 3 p.m. at the Hong Kong Observatory the air temperature was 34 degrees Celsius and the relative humidity 54 per cent.
During the past hour the mean UV Index recorded at King's Park was 5. The intensity of UV radiation was moderate.

Tropical Cyclone Megi will cross Taiwan today and make landfall over the vicinity of Fujian tomorrow morning. It will then move inland and weaken rapidly. The Observatory will continue to closely monitor any change of the track of Megi and its effect on local weather.

Please be reminded that:

The Very Hot Weather Warning is now in force. Very hot weather might cause adverse health effects. Members of the public should take care to avoid heatstroke.

The air temperatures at other places were:

King's Park 35 degrees;
Wong Chuk Hang 35 degrees;
Ta Kwu Ling 35 degrees;
Lau Fau Shan 34 degrees;
Tai Po 34 degrees;
Sha Tin 35 degrees;
Tuen Mun 35 degrees;
Tseung Kwan O 35 degrees;
Sai Kung 34 degrees;
Cheung Chau 34 degrees;
Chek Lap Kok 35 degrees;
Tsing Yi 35 degrees;
Shek Kong 35 degrees;
Tsuen Wan Ho Koon 33 degrees;
Tsuen Wan Shing Mun Valley 35 degrees;
Hong Kong Park 34 degrees;
Shau Kei Wan 34 degrees;
Kowloon City 35 degrees;
Happy Valley 36 degrees;
Wong Tai Sin 35 degrees;
Stanley 34 degrees;
Kwun Tong 35 degrees;
Sham Shui Po 36 degrees;
Kai Tak Runway Park 35 degrees;
Yuen Long Park 36 degrees.

Here is the information on Severe Typhoon Megi at noon:
Location: 23.5 degrees north, 122.4 degrees east.


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


Climatological Information for 27 Sep

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

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Bulletin updated at 14:45 HKT 27/Sep/2016

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

The subsidence airstream associated with Tropical Cyclone Megi is affecting Guangdong. Locally, temperatures over many places rose to 33 degrees or above in the afternoon, and even rose to around 35 degrees over parts of the New Territories.

At noon, Severe Typhoon Megi was centred about 240 kilometres east-northeast of Gaoxiong. It is forecast to move west-northwest at about 22 kilometres per hour towards Taiwan.

Weather forecast for this afternoon and tonight

Hazy. Mainly fine and very hot in the afternoon. Isolated showers later. Light winds, becoming moderate northwesterly winds. Fresh at times.

Outlook : Becoming cloudy with showers in the next couple of days. Slightly cooler in the latter part of this week.


(The above forecast period is valid up to 23:59 HKT today, 27/09/2016; Regular update at : around 45 minutes past each hour, 16:15 HKT and 23:15 HKT)

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MARINE FORECAST
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Marine Forecast

Weather Information for the Marine Community

Bulletin issued at 09:00 HKT 27/Sep/2016

HURRICANE WARNING AREAS: TAIWAN STRAIT AND BASHI.
STORM WARNING AREA: BALINTANG.
GALE WARNING AREAS: KWANGTUNG AND PRATAS.

GENERAL SITUATION AT 262100 UTC:
FOR DETAILS ON SEVERE TYPHOON MEGI (1617), PLEASE REFER TO THE 3-HRLY SHIPPING WARNINGS.

MARINE FORECAST FOR 24 HOURS FROM 270100 UTC:

HONG KONG= NW 4-5, OCNL 6 LATER. DOWN TO 4000 M IN SOME HAZE. ISOL SHOWERS AND TS. SEA 2 M. TEMP 33-26 C. =
KWANGTUNG= NW 5-6, 8-9 IN E LATER. DOWN TO 500 M IN FRQ SQUALLY SHOWERS AND TS IN E LATER. SEA 2-3 M, 6-8 M IN E LATER. SWELL NE 2 M, 3-4 M LATER. =
TAIWAN STRAIT= N TO NW 8-9, CYCLONIC 12 LATER. DOWN TO 500 M IN FRQ HEAVY SQUALLY SHOWERS AND TS. SEA 6-8 M, UP TO 14 M LATER. SWELL NE 2-3 M, 4-6 M LATER. =
BASHI= W TO NW 11-12, SW 9-10 LATER. DOWN TO 500 M IN FRQ HEAVY SQUALLY SHOWERS AND TS. SEA 8-10 M, UP TO 14 M AT FIRST. SWELL NE 4-6 M. =
PRATAS= W TO NW 6-7, UP TO 8 LATER. DOWN TO 1000 M IN OCNL SQUALLY SHOWERS AND TS LATER. SEA 3-4 M, UP TO 6 M LATER. SWELL NE 2 M, UP TO 3 M LATER. =
BALINTANG= W TO NW 9-10, SW 7-8 LATER. DOWN TO 500 M IN FRQ HEAVY SQUALLY SHOWERS AND TS. SEA 4-6 M, UP TO 10 M AT FIRST. SWELL NE 4-6 M. =
SCARBOROUGH= NW 5-6, SW 5-6 LATER. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 2-3 M. SWELL NE 2-3 M. =
PARACEL= W TO NW 4-5. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 2 M. =
TONKIN= W TO NW 4-5. ISOL SHOWERS AND TS. SEA UP TO 2 M. =
DANANG= W TO NW 4-5. ISOL 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.


  • Map showing the 10 forecast areas
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    • SOUTH CHINA COASTAL WATERS
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    South China Coastal Waters

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    Bulletin issued at 12:30 HKT 27/Sep/2016

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 12:30 p.m. on 27 September 2016

    Warnings:
    Hurricane force winds in Nan'ao. Gale force winds in Shanwei. Strong winds in south of Hong Kong.

    Weather Situation:
    At noon, Severe Typhoon Megi with maximum sustained winds of about 175 kilometres per hour near its centre was located at 23.5 degrees north, 122.4 degrees east, it is forecast to move west-northwest at about 22 kilometres per hour towards Taiwan.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    Northwest force 4 to 5.
    Some haze. Isolated showers and thunderstorms later.
    Moderate seas.

    Nan'ao:
    North to northwest force 8 to 9, becoming west to southwest force 11 to 12 later.
    Frequent heavy squally showers and thunderstorms.
    Very rough to high seas, becoming phenomenal later.

    Shanwei:
    North to northwest force 5 to 6, becoming west to southwest force 8 to 9 later.
    Occasional heavy squally showers and thunderstorms later.
    Rough seas, becoming very rough to high later.

    South of Hong Kong:
    Northwest force 4 to 5, up to force 6 later.
    Isolated squally showers and thunderstorms.
    Moderate seas, becoming rough later.

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

    Outlook for the next 48 hours
    West to southwesterly winds of force 6 to 7, force 10 to 11 in east at first. Occasional heavy squally showers and thunderstorms.

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

    Waglan Island Wind variable force 1
      Visibility 6 Kilometres

    Shantou Wind west force 2
      Visibility 26 Kilometres

    Dongsha Wind west force 3
      Visibility 10 Kilometres

    Huangmaozhou Wind west-northwest force 3

    Macau Wind northwest force 2
      Visibility 7 Kilometres

    Xisha Wind northwest force 2
      Visibility 21 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 09:00 HKT 27/SEP/2016
    (Next update at 17:30 HKT 27/SEP/2016)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     STRONG WINDS AND SEV TURB LATER.

II.  SYNOPSIS OF THE WEATHER SITUATION :
     THE SUBSIDENCE AIRSTREAM ASSOCIATED WITH
     TROPICAL CYCLONE MEGI IS AFFECTING GUANGDONG.
     AT 8 A.M., SEVERE TYPHOON MEGI WAS CENTRED NEAR
     22.9 DEGREES NORTH, 123.4 DEGREES EAST.  IT IS
     FORECAST TO MOVE WEST-NORTHWEST AT ABOUT 12
     KNOTS TOWARDS TAIWAN.

III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1000 TO 2000 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  320/5-10 BEC 320/15
       OFFSHORE:  320/10 BEC 320/15-20, OCNL 25        30-34
   B.   2000 FT:  340/15 BEC 340/20-25                 28
   C.   5000 FT:  350/25                               21
   D.  10000 FT:  020/25                               14
   E.  18000 FT:  030/30                               MS2
   F.  24000 FT:  050/35                               MS13
   G.  30000 FT:  080/25                               MS27
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      MAINLY FINE BUT HAZY.  ISOLATED SHOWERS LATER.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 3000 FT.
   K. VISIBILITY    : 6 KM.  TEMPO 3000 M IN HAZE/SHOWERS.
   L. 0 DEG. C LEVEL: 17500 FT      10 DEG. C LEVEL(S) : 13000 FT
   M. TURBULENCE    : MOD TO SEV OFFSHORE AND NEAR HILLS LATER.
   N. SEA STATE     : 1.5 BEC 2.5 M   SEA TEMPERATURE    : 27 DEG

IV.  FURTHER OUTLOOK: 
     MODERATE TO FRESH WEST TO NORTHWESTERLY WINDS,
     OCCASIONALLY STRONG OFFSHORE AND ON HIGH GROUND.
     MAINLY CLOUDY WITH A FEW 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 17:33 HKT on 25 Sep 16

    VHHK SIGMET 3 VALID 250935/251335 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N1900 E11554 - N1642 E11400 - N1824 E11230 - N1900 E11330 - N1900 E11554 MOV SW 10KT 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 Meranti broadcast by Ms LAM CHING CHI , Senior Scientific Officer of the Hong Kong Observatory at 6:15 p.m. on 14 Sep 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

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    Severe Weather Information Centre

    Bulletin issued at 15:30 HKT 27/Sep/2016


    Tropical Cyclone Warning

    At 270600 UTC, Severe Typhoon Megi (1617) with central pressure 945 hectopascals was centred within 60 nautical miles of two four point zero degrees north (24.0 N) one two one point six degrees east (121.6 E) and is forecast to move west-northwest at about 12 knots for the next 24 hours.

    Maximum winds near the centre are estimated to be 90 knots.

    Radius of over 33 knot winds 210 nautical miles.
    Radius of over 47 knot winds 120 nautical miles.
    Radius of over 63 knot winds 90 nautical miles over northern semicircle, 60 nautical miles elsewhere.
    Radius of over 2 metre waves 270 nautical miles.

    Forecast position and intensity at 280600 UTC
    Two four point seven degrees north (24.7 N)
    One one seven point three degrees east (117.3 E)
    Maximum winds 55 knots.

    Forecast position and intensity at 290600 UTC
    Dissipated over land.



    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 27/Sep/2016 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     31.1 C
Minimum Air Temperature                     27.0 C
Grass Minimum Temperature                   26.4 C
Relative Humidity                        71 - 89 Percent
Rainfall                                      Trace 
Total rainfall since 1st January          2263.8 mm
Against an average of                     2209.4 mm

Other Stations                Min                  Max
King's Park                  26.1 C               31.4 C
Wong Chuk Hang               26.2 C               30.3 C
Ta Kwu Ling                  25.4 C               32.8 C
Lau Fau Shan                 25.4 C               31.5 C
Tai Po                       26.0 C               32.2 C
Sha Tin                      26.1 C               32.1 C
Tuen Mun                     25.9 C               32.5 C
Tseung Kwan O                26.0 C               32.3 C
Sai Kung                     26.7 C               31.6 C
Cheung Chau                  26.0 C               31.7 C
Chek Lap Kok                 27.0 C               32.7 C
Tsing Yi                     26.0 C               31.6 C
Shek Kong                    25.0 C               33.0 C
Tsuen Wan Ho Koon            24.4 C               29.8 C
Tsuen Wan Shing Mun Valley   25.4 C               31.9 C
Hong Kong Park               26.3 C               30.8 C
Shau Kei Wan                 26.4 C               30.9 C
Kowloon City                 26.3 C               32.4 C
Happy Valley                 26.8 C               32.0 C
Wong Tai Sin                 26.1 C               32.1 C
Stanley                      26.7 C               29.8 C
Kwun Tong                    26.4 C               31.3 C
Sham Shui Po                 26.7 C               32.1 C
Kai Tak Runway Park          27.3 C               31.7 C
Yuen Long Park               25.6 C               33.5 C

Duration of sunshine (King's Park):              7.3 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 7.
Sea surface temperature (Waglan Island):        28.6 C 

Yesterday's (26 Sep 2016) average ambient gamma radiation
dose rate taken outdoors in Hong Kong ranged from 0.08 to
0.14 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                        0.14

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 26 Sep
     2003copy right image | Important notices | Privacy policy Last revision date: <27 Sep 2016> 

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