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Bulletin issued at 11:06 HKT 19/Oct/2016

At 11 a.m. at the Hong Kong Observatory the air temperature was 25 degrees Celsius and the relative humidity 97 per cent.
During the past hour the mean UV Index recorded at King's Park was 0.9. The intensity of UV radiation was low.

Widespread heavy rain may affect Hong Kong in a couple of hours. Members of the public should be on the alert.


Gusts reaching 70 kilometres per hour or above may continue to affect Hong Kong.

Please be reminded that:

The Thunderstorm Warning has been issued. It will remain effective until 12:30 p.m. today. Isolated squally thunderstorms are expected to occur over Hong Kong.
The Landslip Warning has been issued.

The air temperatures at other places were:

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

Between 9:45 and 10:45 a.m., lightning was detected within New Territories East. The rainfall recorded in various regions were:

North District 7 to 45 mm;
Tai Po 0 to 36 mm;
Sha Tin 10 to 35 mm;
Sai Kung 1 to 31 mm;
Kwun Tong 22 to 29 mm;
Eastern District 11 to 28 mm;
Wong Tai Sin 21 to 27 mm;
Kowloon City 14 to 19 mm;
Southern District 1 to 17 mm;
Yau Tsim Mong 12 to 13 mm;
Sham Shui Po 5 to 12 mm;
Wan Chai 6 to 11 mm;
Yuen Long 0 to 10 mm;
Kwai Tsing 1 to 10 mm;
Tsuen Wan 0 to 7 mm;
Central & Western District 1 to 6 mm;
Islands District 0 to 5 mm;
Tuen Mun 0 to 2 mm.

Here is the information on Tropical Storm Sarika at 10 a.m.:
Location: 21.0 degrees north, 108.1 degrees east.


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


Climatological Information for 19 Oct

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

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Bulletin updated at 10:45 HKT 19/Oct/2016

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

The northeast monsoon is affecting the coast of Guangdong. Locally, more than 20 millimetres of rainfall were generally recorded this morning, and rainfall even exceeded 40 millimetres over New Territories East and Chek Lap Kok.

At 10 a.m., Super Typhoon Haima was centred about 540 kilometres east-northeast of Manila. It is forecast to move west-northwest at about 28 kilometres per hour towards the northern part of Luzon. Meanwhile, Tropical Storm Sarika was centred about 200 kilometres south of Nanning. It is forecast to move north-northwest at about 12 kilometres per hour across Beibu Wan.

Weather forecast for today

Cloudy with squally showers and thunderstorms. Showers will be heavy at first. Showers will ease off tonight. Fresh east to southeasterly winds, occasionally strong offshore at first. Seas will be rough with swells.

Outlook : Sunny periods tomorrow. Heavy squally showers and swells on Friday and Saturday.


(The above forecast period is valid up to 23:59 HKT today, 19/10/2016; 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 19/Oct/2016

HURRICANE WARNING AREAS: BALINTANG AND SCARBOROUGH.
STORM WARNING AREAS: BASHI, PARACEL AND TONKIN.
GALE WARNING AREAS: KWANGTUNG, PRATAS AND DANANG.

GENERAL SITUATION AT 182100 UTC:
FOR DETAILS ON SEVERE TROPICAL STORM SARIKA (1621), PLEASE REFER TO THE 3-HRLY SHIPPING WARNINGS. SUPER TYPHOON HAIMA (1622) 905 HPA 16N 127E WNW 15KT INTST NC.

MARINE FORECAST FOR 24 HOURS FROM 190100 UTC:

HONG KONG= E TO SE 6-7. DOWN TO 1000 M IN SCT HEAVY SQUALLY SHOWERS AND TS. SEA UP TO 3-4 M. SWELL E TO SE 2-3 M. TEMP 27-25 C. =
KWANGTUNG= E TO SE 8-9. DOWN TO 1000 M IN SCT HEAVY SQUALLY SHOWERS AND TS. SEA 6-8 M. SWELL E TO SE 3 M, S TO SW 3-5 M. =
TAIWAN STRAIT= NE 6-7. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS LATER. SEA 3-4 M. SWELL NE 2 M. =
BASHI= E TO NE 6-7, UP TO 10 LATER. DOWN TO 1000 M IN OCNL HEAVY SQUALLY SHOWERS AND TS. SEA 3-4 M, UP TO 10 M LATER. SWELL NE 3 M. =
PRATAS= E TO SE 5-6, N 7-8 LATER. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 2-3 M, 4-6 M LATER. SWELL E TO SE 3 M, S TO SW 3-5 M. =
BALINTANG= E TO NE 7-8, UP TO 12 LATER. DOWN TO 1000 M IN OCNL HEAVY SQUALLY SHOWERS AND TS. SEA 4-6 M, UP TO 14 M LATER. SWELL NE 3 M. =
SCARBOROUGH= SE 5-6, UP TO 12 LATER. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 2-3 M, UP TO 14 M LATER. SWELL E TO SE 3 M, S TO SW 3 M. =
PARACEL= SW 9-10, N 6 LATER. DOWN TO 500 M IN FRQ HEAVY SQUALLY SHOWERS AND TS AT FIRST. SEA 8-10 M, 3 M LATER. SWELL E TO SE 5-7 M, S TO SW 5-7 M. =
TONKIN= CYCLONIC 11, BEC SW 6. DOWN TO 500 M IN FRQ HEAVY SQUALLY SHOWERS AND TS. SEA 12 M, BEC 3 M. SWELL NE 3 M. =
DANANG= W TO SW 8, BEC 6. DOWN TO 500 M IN FRQ HEAVY SQUALLY SHOWERS AND TS. SEA 6 M, BEC 3 M. SWELL NE 3 M, S TO SW 3-5 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 19/Oct/2016

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 9:30 a.m. on 19 October 2016

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

    Weather Situation:
    An intense northeast monsoon is affecting the south China coastal waters.

    Severe Tropical Storm Sarika has weakened into a tropical storm. At 9 a.m., Sarika with maximum sustained winds of about 85 kilometres per hour near its centre was located at 20.8 degrees north, 108.1 degrees east, it is forecast to move north-northwest at about 12 kilometres per hour across Beibu Wan. Meanwhile, Super Typhoon Haima with maximum sustained winds of about 220 kilometres per hour near its centre was located at 16.1 degrees north, 125.9 degrees east, it is forecast to move west-northwest at about 28 kilometres per hour towards the northern part of Luzon.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    East to southeast force 6 to 7.
    Scattered heavy squally showers and thunderstorms.
    Rough seas.

    Nan'ao and Shanwei:
    East force 6 to 7.
    Isolated squally showers and thunderstorms.
    Rough seas.

    South of Hong Kong:
    East to southeast force 6 to 7, up to force 8 at first.
    Scattered heavy squally showers and thunderstorms.
    Rough to very rough seas.

    Shangchuan Dao:
    South to southeast force 8, becoming south to southeast force 6.
    Scattered heavy squally showers and thunderstorms.
    Rough to very rough seas.

    Outlook for the next 48 hours
    Northeasterly winds of force 6 to 7, cyclonic winds of up to force 12 in east later. Occasional heavy squally showers and thunderstorms.

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

    Waglan Island Wind east-southeast force 6
      Visibility 6 Kilometres

    Shantou Wind east force 2
      Visibility 21 Kilometres

    Dongsha Wind east force 3
      Visibility 10 Kilometres

    Huangmaozhou Wind east-southeast force 5

    Macau Wind east-southeast force 3
      Visibility 6 Kilometres in showers

    Xisha Wind calm
      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 11:00 HKT 19/OCT/2016
    (Next update at 17:30 HKT 19/OCT/2016)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     STRONG WINDS, SEV TURB AND SEV GUSTS. ISOL
     CUNIM/TS AND ASSOCIATED HAZARDS.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     SEVERE TROPICAL STORM SARIKA HAS WEAKENED INTO A
     TROPICAL STORM. AT 10 A.M., IT WAS CENTRED NEAR
     21.0 DEGREES NORTH, 108.1 DEGREES EAST. IT IS
     FORECAST TO MOVE NORTH-NORTHWEST AT ABOUT 6
     KNOTS ACROSS BEIBU WAN.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1100 TO 2000 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  110/10-15
                  TEMPO VRB/15G25
       OFFSHORE:  100/20-25                            26-29
   B.   2000 FT:  100/20-25, OCNL 30-35G45 AT FIRST    22
   C.   5000 FT:  150/25-30                            19
   D.  10000 FT:  160/20-25                            10
   E.  18000 FT:  170/20                               MS2
   F.  24000 FT:  180/20                               MS12
   G.  30000 FT:  150/25                               MS26
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL
   I. WEATHER       : 
      MAINLY CLOUDY WITH SQUALLY SHOWERS. ISOLATED
      THUNDERSTORMS AT FIRST.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1000 FT SCT 2500 FT, TEMPO FEW CB 800 FT SCT
      2000 FT BKN 5000 FT
   K. VISIBILITY    : 9 KM. TEMPO 3000 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
   N. SEA STATE     : 3.0-4.0 M     SEA TEMPERATURE    : 26 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE EASTERLY WINDS, OCCASIONALLY FRESH
     OFFSHORE. MAINLY CLOUDY.=

    ===================================================================
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 11:25 HKT on 19 Oct 16

    VHHK SIGMET 1 VALID 190330/190730 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N2154 E11224 - N2230 E11342 - N2236 E11406 - N2000 E11530 - N1948 E11506 - N2154 E11224 TOP FL420 MOV NW 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.

    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 09:31 HKT 19/Oct/2016


    Tropical Cyclone Warning

    Severe Tropical Storm Sarika (1621) has weakened into a Tropical Storm with central pressure 988 hectopascals. At 190000 UTC, it was centred within 60 nautical miles of two zero point nine degrees north (20.9 N) one zero eight point two degrees east (108.2 E) and is forecast to move north-northwest at about 6 knots for the next 24 hours.

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

    Radius of over 33 knot winds 90 nautical miles.
    Radius of over 2 metre waves 210 nautical miles.

    Forecast position and intensity at 200000 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 19/Oct/2016 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     25.5 C
Minimum Air Temperature                     23.9 C
Grass Minimum Temperature                   24.0 C
Relative Humidity                        90 - 98 Percent
Rainfall                                   178.7 mm 
Total rainfall since 1st January          2590.6 mm
Against an average of                     2309.7 mm

Other Stations                Min                  Max
King's Park                  23.7 C               25.2 C
Wong Chuk Hang               23.9 C               25.6 C
Ta Kwu Ling                  23.6 C               25.3 C
Lau Fau Shan                 23.1 C               25.1 C
Tai Po                       23.8 C               25.5 C
Sha Tin                      24.1 C               26.5 C
Tuen Mun                     23.9 C               26.3 C
Tseung Kwan O                23.6 C               25.6 C
Sai Kung                     24.3 C               26.0 C
Cheung Chau                  23.5 C               25.4 C
Chek Lap Kok                 24.6 C               27.6 C
Tsing Yi                     24.3 C               26.7 C
Shek Kong                    24.1 C               26.4 C
Tsuen Wan Ho Koon            23.1 C               24.7 C
Tsuen Wan Shing Mun Valley   23.8 C               25.7 C
Hong Kong Park               23.6 C               26.0 C
Shau Kei Wan                 23.3 C               25.7 C
Kowloon City                 23.6 C               25.5 C
Happy Valley                 24.5 C               26.5 C
Wong Tai Sin                 23.9 C               25.6 C
Stanley                      24.1 C               25.8 C
Kwun Tong                    24.1 C               25.9 C
Sham Shui Po                 23.8 C               26.1 C
Kai Tak Runway Park          24.7 C               26.6 C
Yuen Long Park               24.1 C               26.4 C

Duration of sunshine (King's Park):              0.0 H
The mean UV index recorded at King's Park yesterday was 0.6,
the UV intensity was Low.
The maximum UV index for yesterday was 2.
 

Yesterday's (18 Oct 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                               0.10
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 18 Oct
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