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Bulletin issued at 10:02 HKT 18/Sep/2016

At 10 a.m. at the Hong Kong Observatory the air temperature was 29 degrees Celsius and the relative humidity 67 per cent.
During the past hour the mean UV Index recorded at King's Park was 5. The intensity of UV radiation was moderate.

Please be reminded that:

The Fire Danger Warning is Yellow and the fire risk is high.

The air temperatures at other places were:

King's Park 30 degrees;
Wong Chuk Hang 31 degrees;
Ta Kwu Ling 29 degrees;
Lau Fau Shan 28 degrees;
Tai Po 29 degrees;
Sha Tin 29 degrees;
Tuen Mun 29 degrees;
Tseung Kwan O 31 degrees;
Sai Kung 29 degrees;
Cheung Chau 28 degrees;
Chek Lap Kok 29 degrees;
Tsing Yi 30 degrees;
Shek Kong 30 degrees;
Tsuen Wan Ho Koon 27 degrees;
Tsuen Wan Shing Mun Valley 31 degrees;
Hong Kong Park 29 degrees;
Shau Kei Wan 30 degrees;
Kowloon City 30 degrees;
Happy Valley 31 degrees;
Wong Tai Sin 30 degrees;
Stanley 29 degrees;
Kwun Tong 30 degrees;
Sham Shui Po 30 degrees;
Kai Tak Runway Park 30 degrees;
Yuen Long Park 30 degrees.

Here is the information on Severe Typhoon Malakas at 10 a.m.:
Location: 26.9 degrees north, 123.6 degrees east.


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


Climatological Information for 18 Sep

Regional Weather in Hong Kong

Information on Tropical Cyclones

Hong Kong Climatology


Local Weather Forecast
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Bulletin updated at 09:45 HKT 18/Sep/2016

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

A dry continental airstream continues to bring generally fine weather to the coast of Guangdong.

At 10 a.m., Severe Typhoon Malakas was centred about 860 kilometres southwest of Kagoshima. It is forecast to move northeast at about 15 kilometres per hour across the East China Sea in the general direction of the southern part of Japan.

Weather forecast for today

Mainly fine and dry. Hot during the day. Light to moderate northerly winds.

Outlook : Mainly fine and dry tomorrow. Cloudier in the following couple of days.


(The above forecast period is valid up to 23:59 HKT today, 18/09/2016; 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 09:00 HKT 18/Sep/2016

GALE WARNING AREA: TAIWAN STRAIT.

GENERAL SITUATION AT 172100 UTC:
FOR DETAILS ON SEVERE TYPHOON MALAKAS (1616), PLEASE REFER TO THE 3-HRLY SHIPPING WARNINGS.

MARINE FORECAST FOR 24 HOURS FROM 180100 UTC:

HONG KONG= N 4-5. FINE. SEA UP TO 2 M. TEMP 32-26 C. =
KWANGTUNG= N TO NE 4-5. ISOL SHOWERS AND TS IN E. SEA UP TO 2 M. SWELL NE 2-3 M. =
TAIWAN STRAIT= NE 6-7, OCNL 8 IN N AT FIRST. DOWN TO 500 M IN FRQ HEAVY SQUALLY SHOWERS AND TS. SEA UP TO 6 M AT FIRST. SWELL NE 3-5 M, SW 3 M. =
BASHI= SW 5-6, OCNL 7 AT FIRST. DOWN TO 1000 M IN SCT HEAVY SQUALLY SHOWERS AND TS. SEA UP TO 4 M AT FIRST. SWELL NE 3-5 M, S TO SW 3-5 M. =
PRATAS= N TO NW 4-5. ISOL SHOWERS AND TS. SEA UP TO 2 M. SWELL NE 2-3 M. =
BALINTANG= SW 5-6. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 2-3 M. SWELL NE 2-3 M, SW 2-3 M. =
SCARBOROUGH= SW 4-5. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA UP TO 2 M. SWELL SW 2 M. =
PARACEL= N TO NE 4-5. ISOL SHOWERS AND TS. SEA UP TO 2 M. =
TONKIN= N TO NE 4-5. ISOL SHOWERS AND TS. SEA UP TO 2 M. =
DANANG= N TO NE 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 09:30 HKT 18/Sep/2016

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 9:30 a.m. on 18 September 2016

    Weather Situation:
    At 9 a.m., Severe Typhoon Malakas with maximum sustained winds of about 155 kilometres per hour near its centre was located at 26.8 degrees north, 123.5 degrees east, it is forecast to move northeast at about 15 kilometres per hour across the East China Sea in the general direction of the southern part of Japan.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    North force 4 to 5.
    Moderate seas.

    Nan'ao and Shanwei:
    North to northeast force 4 to 5.
    Isolated showers and thunderstorms.
    Moderate seas.

    South of Hong Kong and Shangchuan Dao:
    North to northeast force 4 to 5.
    Isolated showers and thunderstorms at first.
    Moderate seas.

    Outlook for the next 48 hours
    North to northeasterly winds of force 5, force 6 later. Isolated showers and thunderstorms.

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

    Waglan Island Wind north-northeast force 3
      Visibility 32 Kilometres

    Shantou Wind southeast force 1
      Visibility 29 Kilometres

    Dongsha Wind north-northeast force 2
      Visibility 10 Kilometres

    Huangmaozhou Wind north force 3

    Macau Wind north force 3
      Visibility 21 Kilometres

    Xisha Wind northwest 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 09:00 HKT 18/SEP/2016
    (Next update at 17:30 HKT 18/SEP/2016)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     NIL.

II.  SYNOPSIS OF THE WEATHER SITUATION :
     A DRY CONTINENTAL AIRSTREAM CONTINUES TO BRING
     GENERALLY FINE WEATHER TO THE COAST OF GUANGDONG.
     AT 9 A.M., SEVERE TYPHOON MALAKAS WAS CENTRED
     NEAR 26.8 DEGREES NORTH, 123.5 DEGREES EAST.  IT
     IS FORECAST TO MOVE NORTHEAST AT ABOUT 8 KNOTS
     ACROSS THE EAST CHINA SEA.

III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1000 TO 2000 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  360/5-10
       OFFSHORE:  360/10-15                            28-33
   B.   2000 FT:  020/10-15                            24
   C.   5000 FT:  040/15                               18
   D.  10000 FT:  320/15                               12
   E.  18000 FT:  360/20                               0
   F.  24000 FT:  360/25                               MS13
   G.  30000 FT:  340/15                               MS27
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      MAINLY FINE.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 3000 FT.
   K. VISIBILITY    : 10 KM.
   L. 0 DEG. C LEVEL: 18000 FT      10 DEG. C LEVEL(S) : 11400 FT
   M. TURBULENCE    : MOD OFFSHORE AND NEAR HILLS.
   N. SEA STATE     : 1.5 M         SEA TEMPERATURE    : 28 DEG

IV.  FURTHER OUTLOOK: 
     MODERATE NORTH TO NORTHEASTERLY WINDS.  MAINLY
     FINE.=

    ===================================================================
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 09:50 HKT on 18 Sep 16

    VHHK SIGMET 1 VALID 180150/180550 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N1712 E11330 - N1848 E11206 - N2030 E11524 - N1948 E11548 - N1712 E11330 TOP FL400 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 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

    Tropical Cyclone Warning |  Track and Positions of Tropical Cyclones
    Current Weather |  Local Weather Forecast |  9-day Weather Forecast
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    Severe Weather Information Centre

    Bulletin issued at 09:30 HKT 18/Sep/2016


    Tropical Cyclone Warning

    At 180000 UTC, Severe Typhoon Malakas (1616) with central pressure 950 hectopascals was centred within 60 nautical miles of two six point eight degrees north (26.8 N) one two three point five degrees east (123.5 E) and is forecast to move northeast at about 8 knots for the next 24 hours.

    Maximum winds near the centre are estimated to be 85 knots.

    Radius of over 33 knot winds 150 nautical miles.
    Radius of over 47 knot winds 90 nautical miles over eastern semicircle, 60 nautical miles elsewhere.
    Radius of over 63 knot winds 45 nautical miles over eastern semicircle, 30 nautical miles elsewhere.
    Radius of over 2 metre waves 180 nautical miles.

    Forecast position and intensity at 190000 UTC
    Two nine point zero degrees north (29.0 N)
    One two five point seven degrees east (125.7 E)
    Maximum winds 70 knots.

    Forecast position and intensity at 200000 UTC
    Three one point six degrees north (31.6 N)
    One three zero point four degrees east (130.4 E)
    Maximum winds 60 knots.

    Forecast position and intensity at 210000 UTC
    Become extratropical low.



    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 18/Sep/2016 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     31.6 C
Minimum Air Temperature                     27.3 C
Grass Minimum Temperature                   26.1 C
Relative Humidity                        56 - 78 Percent
Rainfall                                       0 mm 
Total rainfall since 1st January          2218.0 mm
Against an average of                     2129.7 mm

Other Stations                Min                  Max
King's Park                  27.3 C               31.9 C
Wong Chuk Hang               25.4 C               33.0 C
Ta Kwu Ling                  24.2 C               33.1 C
Lau Fau Shan                 26.6 C               31.7 C
Tai Po                       25.9 C               31.5 C
Sha Tin                      25.4 C               32.7 C
Tuen Mun                     26.0 C               33.2 C
Tseung Kwan O                24.6 C               33.6 C
Sai Kung                     26.4 C               31.6 C
Cheung Chau                  25.9 C               32.5 C
Chek Lap Kok                 27.7 C               34.3 C
Tsing Yi                     26.2 C               33.0 C
Shek Kong                    24.7 C               32.8 C
Tsuen Wan Ho Koon            25.2 C               31.5 C
Tsuen Wan Shing Mun Valley   25.0 C               32.6 C
Hong Kong Park               26.6 C               33.3 C
Shau Kei Wan                 27.1 C               32.6 C
Kowloon City                 27.3 C               33.4 C
Happy Valley                 26.2 C               33.7 C
Wong Tai Sin                 26.7 C               34.5 C
Stanley                      26.0 C               33.2 C
Kwun Tong                    27.3 C               33.1 C
Sham Shui Po                 26.7 C               34.2 C
Kai Tak Runway Park          28.0 C               33.2 C
Yuen Long Park               25.2 C               33.8 C

Duration of sunshine (King's Park):              7.3 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 8.
 

Yesterday's (17 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 17 Sep
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