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

At 6 a.m. at the Hong Kong Observatory the air temperature was 28 degrees Celsius and the relative humidity 68 per cent.

Please be reminded that:

The Yellow Fire Danger Warning was issued at 6:00 a.m. and the fire risk is high.

The air temperatures at other places were:

King's Park 28 degrees;
Wong Chuk Hang 28 degrees;
Ta Kwu Ling 24 degrees;
Lau Fau Shan 28 degrees;
Tai Po 27 degrees;
Sha Tin 27 degrees;
Tuen Mun 27 degrees;
Tseung Kwan O 26 degrees;
Sai Kung 28 degrees;
Cheung Chau 27 degrees;
Chek Lap Kok 29 degrees;
Tsing Yi 27 degrees;
Shek Kong 25 degrees;
Tsuen Wan Ho Koon 26 degrees;
Tsuen Wan Shing Mun Valley 26 degrees;
Hong Kong Park 28 degrees;
Shau Kei Wan 29 degrees;
Kowloon City 28 degrees;
Happy Valley 29 degrees;
Wong Tai Sin 28 degrees;
Stanley 28 degrees;
Kwun Tong 27 degrees;
Sham Shui Po 29 degrees;
Kai Tak Runway Park 29 degrees;
Yuen Long Park 26 degrees.

Here is the information on Severe Typhoon Meranti at 5 a.m.:
Location: 24.8 degrees north, 118.0 degrees east.


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


Climatological Information for 15 Sep

Regional Weather in Hong Kong

Information on Tropical Cyclones

Hong Kong Climatology


Local Weather Forecast
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Bulletin updated at 06:20 HKT 15/Sep/2016

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

The cloud band associated with Tropical Cyclone Meranti is covering eastern Guangdong.

Severe Typhoon Meranti has weakened into a typhoon. At 6 a.m., Meranti was centred about 50 kilometres north-northwest of Xiamen. It is forecast to move northwest or north-northwest at about 20 kilometres per hour, towards inland Fujian and weakening further. Meanwhile, Typhoon Malakas was centred about 1030 kilometres south of Okinawa. It is forecast to move northwest or west-northwest at about 24 kilometres per hour in the general direction of the seas east of Taiwan.

Weather forecast for today

Sunny periods. Dry during the day with a maximum temperature of about 32 degrees. A few showers later. Moderate to fresh west to northwesterly winds, occasionally strong on high ground at first.

Outlook : Sunny periods and a few showers in the next couple of days.


(The above forecast period is valid up to 23:59 HKT today, 15/09/2016; 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 14/Sep/2016

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

GENERAL SITUATION AT 140900 UTC:
FOR DETAILS ON SUPER TYPHOON MERANTI (1614), PLEASE REFER TO THE 3-HRLY SHIPPING WARNINGS.

MARINE FORECAST FOR 24 HOURS FROM 141300 UTC:

HONG KONG= W TO NW 5-6. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 2-3 M. SWELL SE UP TO 2 M. TEMP 26-31 C. =
KWANGTUNG= W TO NW 5-6, CYCLONIC UP TO 12 IN E. DOWN TO 500 M IN FRQ HEAVY SQUALLY SHOWERS AND TS IN E. SEA 2-3 M, UP TO 14 M IN E. SWELL E TO NE 3 M, UP TO 7 M IN E. =
TAIWAN STRAIT= CYCLONIC 12, S TO SE 8-9 LATER. DOWN TO 500 M IN FRQ HEAVY SQUALLY SHOWERS AND TS. SEA 14 M, 6-8 M LATER. SWELL S TO SW 6 M. =
BASHI= S TO SW 10-11, OCNL 12 AT FIRST. DOWN TO 500 M IN FRQ HEAVY SQUALLY SHOWERS AND TS. SEA UP TO 14 M AT FIRST. SWELL E TO NE 5-7 M, S TO SW 5-7 M. =
PRATAS= W TO SW 8-9, OCNL 10 AT FIRST. DOWN TO 500 M IN FRQ HEAVY SQUALLY SHOWERS AND TS. SEA UP TO 10 M AT FIRST. SWELL E TO NE 5 M, SW 5-7 M. =
BALINTANG= S TO SW 6-7, OCNL 8 AT FIRST. DOWN TO 500 M IN FRQ HEAVY SQUALLY SHOWERS AND TS. SEA UP TO 6 M AT FIRST. SWELL E TO NE 5 M, S TO SW 5-7 M. =
SCARBOROUGH= SW 5-6. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 2-3 M. SWELL SW 2-3 M. =
PARACEL= W TO NW 4-5. ISOL SHOWERS AND TS. SEA UP TO 2 M. SWELL S TO SW 2 M. =
TONKIN= N 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
  • 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 06:30 HKT 15/Sep/2016

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 6:30 a.m. on 15 September 2016

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

    Weather Situation:
    Severe Typhoon Meranti has weakened into a typhoon. At 6 a.m., Meranti with maximum sustained winds of about 145 kilometres per hour near its centre was located at 24.9 degrees north, 117.8 degrees east, it is forecast to move northwest or north-northwest at about 20 kilometres per hour, towards inland Fujian and weakening further. Meanwhile, Typhoon Malakas with maximum sustained winds of about 120 kilometres per hour near its centre was located at 17.0 degrees north, 129.2 degrees east, it is forecast to move northwest or west-northwest at about 24 kilometres per hour in the general direction of the seas east of Taiwan.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    West to northwest force 5 to 6.
    Scattered squally showers and thunderstorms.
    Moderate to rough seas.

    Nan'ao:
    Southwest force 9 to 10, becoming force 8.
    Frequent heavy squally showers and thunderstorms.
    Very rough to high seas.

    Shanwei:
    West to northwest force 6 to 7, occasionally force 8.
    Frequent heavy squally showers and thunderstorms.
    Rough to very rough seas.

    South of Hong Kong:
    West to northwest force 5 to 6.
    Scattered squally showers and thunderstorms.
    Moderate to rough seas.

    Shangchuan Dao:
    West to northwest force 5 to 6.
    Isolated squally showers and thunderstorms.
    Moderate to rough seas.

    Outlook for the next 48 hours
    West to southwesterly winds of force 4 to 5, force 6 to 7 in east at first. Occasional squally showers and thunderstorms.

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

    Waglan Island Wind west-northwest force 2
      Visibility 30 Kilometres

    Shantou Wind west-southwest force 2
      Visibility 30 Kilometres

    Dongsha Wind southwest force 4
      Visibility 10 Kilometres

    Huangmaozhou Wind northwest force 4

    Macau Wind north-northwest force 2
      Visibility 15 Kilometres

    Xisha Wind west-southwest force 2
      Visibility 23 Kilometres

  • Explanation of Seas or Sea Waves
  • Explanation of Swells
  • Descriptive Terms of Wind Speeds
  • Visibility Readings in Hong Kong Waters
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    • WEATHER FORECAST FOR LOCAL AVIATION
    Traditional Chinese Simplified Chinese

    Weather Forecast for Local Aviation

    Bulletin issued at 01:30 HKT 15/SEP/2016
    (Next update at 9:00-9:30 HKT 15/SEP/2016)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     STRONG WINDS AND SEV TURB.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     SUPER TYPHOON MERANTI HAS WEAKENED INTO A SEVERE TYPHOON.
     AT 1 A.M., MERANTI WAS CENTERED NEAR 24.0N 118.4E. IT IS
     FORECAST TO MOVE NORTHWEST AT ABOUT 11 KNOTS TOWARDS THE
     COAST OF SOUTHERN FUJIAN.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 0200 TO 1200 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  320/10-15
       OFFSHORE:  320/15-20, OCNL 25 AT FIRST          27-33
   B.   2000 FT:  340/15-20, OCNL 25 AT FIRST          24
   C.   5000 FT:  340/20                               20
   D.  10000 FT:  340/20                               14
   E.  18000 FT:  340/25                               0
   F.  24000 FT:  340/20                               MS12
   G.  30000 FT:  320/15                               MS24
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      MAINLY CLOUDY. SUNNY INTERVALS DURING THE DAY.
      LOCALIZED HAZE.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 3000 FT SCT 4500 FT.
   K. VISIBILITY    : 8 KM. TEMPO 4000 M IN HAZE.
   L. 0 DEG. C LEVEL: 18000 FT      10 DEG. C LEVEL(S) : 12800 FT
   M. TURBULENCE    : MOD TO SEV OFFSHORE AND NEAR HILLS.
   N. SEA STATE     : 2.0-3.0 M     SEA TEMPERATURE    : 27 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE NORTHWESTERLY WINDS, OCCASIONALLY FRESH OFFSHORE
     AND ON HIGH GROUND AT FIRST. MAINLY CLOUDY WITH SUNNY INTERVALS.
     A FEW SHOWERS AND ISOLATED THUNDERSTORMS.=

    ===================================================================
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 02:05 HKT on 15 Sep 16

    VHHK SIGMET 3 VALID 141810/142210 VHHH- VHHK HONG KONG FIR EMBD TS FCST E OF E11630 TOP FL400 STNR NC=

    Please click here for more about the SIGMET

    TROPICAL CYCLONE WARNING Skip to main content
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    Tropical Cyclone Warnings

    Bulletin issued at 04:25 HKT 15/Sep/2016

    Tropical Cyclone Bulletin

    Here is the latest Tropical Cyclone Bulletin issued by the Hong Kong Observatory.

    All signals were cancelled at 4:20 a.m.

    At 4 a.m., Severe Typhoon Meranti was centred about 500 kilometres east-northeast of Hong Kong (near 24.7 degrees north 118.3 degrees east) and is forecast to move northwest or north-northwest at about 20 kilometres per hour towards inland Fujian and further weaken.

    Occasional strong winds will still affect high ground at first. There may also be swells. Members of the public should stay on the alert.
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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
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    Severe Weather Information Centre

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


    Tropical Cyclone Warning

    Severe Typhoon Meranti (1614) has weakened into a Typhoon with central pressure 955 hectopascals. At 142100 UTC, it was centred within 60 nautical miles of two four point eight degrees north (24.8 N) one one eight point zero degrees east (118.0 E) and is forecast to move northwest or north-northeast at about 10 knots for the next 24 hours.

    Maximum winds near the centre are estimated to be 80 knots.

    Radius of over 33 knot winds 120 nautical miles.
    Radius of over 47 knot winds 90 nautical miles.
    Radius of over 63 knot winds 30 nautical miles.
    Radius of over 2 metre waves 210 nautical miles.

    Forecast position and intensity at 152100 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 15/Sep/2016 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     32.6 C
Minimum Air Temperature                     26.9 C
Grass Minimum Temperature                   26.2 C
Relative Humidity                        55 - 90 Percent
Rainfall                                       0 mm 
Total rainfall since 1st January          2217.3 mm
Against an average of                     2076.9 mm

Other Stations                Min                  Max
King's Park                  26.3 C               32.8 C
Wong Chuk Hang               25.5 C               32.5 C
Ta Kwu Ling                  24.7 C               33.3 C
Lau Fau Shan                 26.0 C               31.6 C
Tai Po                       26.0 C               32.7 C
Sha Tin                      24.9 C               33.4 C
Tuen Mun                     25.8 C               32.5 C
Tseung Kwan O                24.7 C               33.7 C
Sai Kung                     25.6 C               32.7 C
Cheung Chau                  25.7 C               31.9 C
Chek Lap Kok                 27.5 C               32.7 C
Tsing Yi                     25.6 C               32.9 C
Shek Kong                    25.1 C               33.9 C
Tsuen Wan Ho Koon            25.2 C               31.6 C
Tsuen Wan Shing Mun Valley   24.8 C               34.0 C
Hong Kong Park               26.0 C               32.8 C
Shau Kei Wan                 26.1 C               33.3 C
Kowloon City                 26.1 C               33.4 C
Happy Valley                 26.1 C               34.6 C
Wong Tai Sin                 25.9 C               34.1 C
Stanley                      25.8 C               32.9 C
Kwun Tong                    26.7 C               33.4 C
Sham Shui Po                 26.0 C               33.5 C
Kai Tak Runway Park          26.7 C               33.7 C
Yuen Long Park               24.9 C               34.0 C

Duration of sunshine (King's Park):              9.7 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 (14 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 14 Sep
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