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Bulletin issued at 19:02 HKT 15/Sep/2016

At 7 p.m. at the Hong Kong Observatory the air temperature was 30 degrees Celsius and the relative humidity 69 per cent.

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


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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Local Weather Forecast

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

Current Weather | Regional Temperature Forecast in HK |  9-day Weather Forecast
UV Index Forecast |  Weather Information for South China Coastal Waters

Bulletin updated at 18:45 HKT 15/Sep/2016

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

A relatively dry continental airstream is affecting the coast of Guangdong. Meanwhile, the cloud band associated with Tropical Cyclone Meranti is covering eastern Guangdong.

Severe Tropical Storm Meranti has weakened into a tropical storm. At 4 p.m., Meranti was centred about 230 kilometres south-southeast of Nanchang. It is forecast to move north at about 22 kilometres per hour, continue to enter inland and further weaken. Meanwhile, Typhoon Malakas was centred about 920 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 tonight and tomorrow

Cloudy periods and isolated showers overnight. Hot and dry with sunny periods during the day tomorrow. Temperatures will range between 27 and 32 degrees. Light to moderate north to northwesterly winds.

Outlook : Mainly fine in the following couple of days. It will be dry early next week.


(The above forecast period is valid up to 23:59 HKT tomorrow, 16/09/2016; 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 15/Sep/2016

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

GENERAL SITUATION AT 142100 UTC:
FOR DETAILS ON TYPHOON MERANTI (1614), PLEASE REFER TO THE 3-HRLY SHIPPING WARNINGS. TYPHOON MALAKAS (1616) 970HPA 17N 129E NW OR WNW 14KT INTSF.

MARINE FORECAST FOR 24 HOURS FROM 150100 UTC:

HONG KONG= NW 4-5, OCNL 6. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 3 M. SWELL SE UP TO 2 M. TEMP 32-27 C. =
KWANGTUNG= NW 5-6, UP TO 10 IN E. DOWN TO 500 M IN FRQ HEAVY SQUALLY SHOWERS AND TS IN E. SEA 2-3 M, UP TO 10 M IN E. SWELL E TO NE 3 M, UP TO 7 M IN E. =
TAIWAN STRAIT= SW 11-12, BEC S TO SE 8-9. DOWN TO 500 M IN FRQ HEAVY SQUALLY SHOWERS AND TS. SEA 12-14 M, 6-8 M LATER. SWELL S TO SW 5-7 M. =
BASHI= S 6-7, CYCLONIC UP TO 12 IN E LATER. DOWN TO 500 M IN FRQ HEAVY SQUALLY SHOWERS AND TS. SEA UP TO 14 M LATER. SWELL E TO NE 5-7 M, S TO SW 5-7 M. =
PRATAS= SW 5-6, UP TO 7 AT FIRST. DOWN TO 1000 M IN OCNL HEAVY SQUALLY SHOWERS AND TS. SEA UP TO 4 M AT FIRST. SWELL E TO NE 5 M, SW 5-7 M. =
BALINTANG= S 6, NW UP TO 12 IN E LATER. DOWN TO 1000 M IN OCNL HEAVY SQUALLY SHOWERS AND TS. SEA UP TO 14 M LATER. SWELL E TO NE 5 M, S TO SW 5-7 M. =
SCARBOROUGH= SW 4-5, OCNL 6. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA UP TO 3 M. SWELL SW 2-3 M. =
PARACEL= NW 4-5. ISOL SHOWERS AND TS. SEA UP TO 2 M. SWELL S TO SW 2 M. =
TONKIN= NW 4-5. ISOL SHOWERS AND TS. SEA UP TO 2 M. =
DANANG= 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 19:30 HKT 15/Sep/2016

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 7:30 p.m. on 15 September 2016

    Warnings:
    Strong winds in Nan'ao.

    Weather Situation:
    At 7 p.m., Tropical Storm Meranti with maximum sustained winds of about 65 kilometres per hour near its centre was located at 27.0 degrees north, 117.1 degrees east. It is forecast to move north at about 22 kilometres per hour, continue to enter inland and further weaken. Meanwhile, Typhoon Malakas with maximum sustained winds of about 145 kilometres per hour near its centre was located at 18.1 degrees north, 127.1 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:
    North to northwest force 4 to 5.
    Isolated showers and thunderstorms.
    Moderate seas.

    Nan'ao:
    Southwest force 4 to 5, occasionally force 6 at first.
    Showers and squally thunderstorms.
    Moderate to rough seas.

    Shanwei:
    West to northwest force 4 to 5.
    Isolated showers and thunderstorms.
    Moderate seas.

    South of Hong Kong and Shangchuan Dao:
    Northwest force 4 to 5.
    Isolated showers and thunderstorms.
    Moderate seas.

    Outlook for the next 48 hours
    Northwesterly winds of force 4 to 5. Isolated squally showers and thunderstorms.

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

    Waglan Island Wind north-northeast force 2
      Visibility 13 Kilometres

    Shantou Wind south-southwest force 1
      Visibility 30 Kilometres

    Dongsha Wind southwest force 2
      Visibility 10 Kilometres

    Huangmaozhou Wind west-northwest force 3

    Macau Wind north-northeast force 2
      Visibility 10 Kilometres

    Xisha Wind west-southwest 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 17:30 HKT 15/SEP/2016
    (Next update at 01:30 HKT 16/SEP/2016)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     NIL.

II.  SYNOPSIS OF THE WEATHER SITUATION :
     A RELATIVELY DRY CONTINENTAL AIRSTREAM IS
     AFFECTING THE COAST OF GUANGDONG.  MEANWHILE,
     THE CLOUD BAND ASSOCIATED WITH TROPICAL CYCLONE
     MERANTI IS COVERING EASTERN GUANGDONG.

III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1800 TO 0400 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  340/5-10
       OFFSHORE:  310/15                               32-27
   B.   2000 FT:  010/15                               24
   C.   5000 FT:  360/15                               19
   D.  10000 FT:  360/20                               12
   E.  18000 FT:  320/20                               MS1
   F.  24000 FT:  350/15                               MS12
   G.  30000 FT:  230/10                               MS25
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      3400 - 3900 FT.
   I. WEATHER       : 
      CLOUDY PERIODS AND ISOLATED SHOWERS.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 2500 FT  SCT 8000 FT.
   K. VISIBILITY    : 7 KM.  TEMPO 4000 M IN SHOWERS.
   L. 0 DEG. C LEVEL: 17500 FT      10 DEG. C LEVEL(S) : 12000 FT
   M. TURBULENCE    : MOD OFFSHORE AND NEAR HILLS.
   N. SEA STATE     : 1.5-2.0 M     SEA TEMPERATURE    : 27 DEG

IV.  FURTHER OUTLOOK: 
     LIGHT TO MODERATE NORTH TO NORTHWESTERLY WINDS.
     CLOUDY PERIODS AND ISOLATED SHOWERS AT FIRST.
     SUNNY PERIODS DURING THE DAY.=

    ===================================================================
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
    Traditional Chinese Simplified Chinese

    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 14:55 HKT on 15 Sep 16

    VHHK SIGMET 2 VALID 150655/151000 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N2300 E11700 - N2312 E11730 - N2100 E11730 - N2000 E11642 - N2000 E11530 - N2300 E11700 TOP FL400 STNR WKN=

    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
    South China Coastal Waters |  Marine Forecast
    Severe Weather Information Centre

    Bulletin issued at 15:40 HKT 15/Sep/2016


    Tropical Cyclone Warning

    Severe Tropical Storm Meranti (1614) has weakened into a Tropical Storm with central pressure 988 hectopascals. At 150600 UTC, it was centred within 60 nautical miles of two six point five degrees north (26.5 N) one one six point nine degrees east (116.9 E) and is forecast to weaken and move north at about 10 knots for the next 24 hours.

    Maximum winds near the centre are estimated to be 45 knots.

    Radius of over 33 knot winds 60 nautical miles over eastern semicircle, 30 nautical miles elsewhere.
    Radius of over 2 metre waves 180 nautical miles.

    No further warnings on this Tropical Storm will be issued by the Hong Kong Observatory unless it re-enters the Hong Kong area of responsibility.

    Forecast position and intensity at 160600 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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