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Bulletin issued at 01:02 HKT 19/Oct/2016

At 1 a.m. at the Hong Kong Observatory the air temperature was 25 degrees Celsius and the relative humidity 95 per cent.

Strong winds are expected from the east. People engaging in outdoor work or activities should be particularly aware of strong gusts. The public should beware of the possible danger brought by rough seas.

Please be reminded that:

The Strong Monsoon Signal 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 24 degrees;
Tai Po 25 degrees;
Sha Tin 26 degrees;
Tuen Mun 25 degrees;
Tseung Kwan O 25 degrees;
Sai Kung 25 degrees;
Cheung Chau 25 degrees;
Chek Lap Kok 27 degrees;
Tsing Yi 26 degrees;
Shek Kong 25 degrees;
Tsuen Wan Ho Koon 24 degrees;
Tsuen Wan Shing Mun Valley 25 degrees;
Hong Kong Park 25 degrees;
Shau Kei Wan 25 degrees;
Kowloon City 25 degrees;
Happy Valley 26 degrees;
Wong Tai Sin 25 degrees;
Stanley 25 degrees;
Kwun Tong 25 degrees;
Sham Shui Po 25 degrees;
Kai Tak Runway Park 26 degrees;
Yuen Long Park 25 degrees.

Between 11:45 p.m. and 0:45 a.m., the rainfall recorded in various regions were:

Islands District 0 to 36 mm;
Tuen Mun 14 to 23 mm;
Kwai Tsing 8 to 17 mm;
Tsuen Wan 1 to 16 mm;
Yuen Long 6 to 15 mm;
Central & Western District 4 to 12 mm;
North District 0 to 11 mm;
Sham Shui Po 8 to 11 mm;
Tai Po 0 to 11 mm;
Southern District 0 to 10 mm;
Sha Tin 3 to 10 mm;
Yau Tsim Mong 6 to 8 mm;
Kowloon City 2 to 7 mm;
Wong Tai Sin 4 to 5 mm;
Kwun Tong 0 to 3 mm;
Sai Kung 0 to 2 mm;
Wan Chai 0 to 2 mm.

Here is the information on Severe Tropical Storm Sarika at 11:00 p.m. yesterday:
Location: 19.8 degrees north, 109.2 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

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

Bulletin updated at 00:50 HKT 19/Oct/2016

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

Sarika moved across Hainan Island and weakened from a severe typhoon into a severe tropical strom gradually yesterday. Its outer rainbands continued to affect the south China coast yesterday. Locally, it was cloudy to overcast with heavy rain and squalls. More than 70 millimetres of rainfall were generally recorded over the territory, and rainfall over parts of the territory even exceeded 150 millimetres. As Sarika moving across Beibu Wan and dissipating inland, rain will ease off gradually over the coast of Guangdong and winds will also weaken today and tomorrow.

At 11 p.m. last night, Super Typhoon Haima was centred about 830 kilometres east of Manila. It is forecast to move west-northwest at about 25 kilometres per hour towards the northern part of Luzon. Meanwhile, Severe Tropical Storm Sarika was centred about 350 kilometres south-southeast of Nanning. It is forecast to move northwest at about 12 kilometres per hour across Beibu Wan.

Weather forecast for Hong Kong

Cloudy with squally showers. Showers will be heavy at first and will ease off gradually later. Temperatures will range between 24 and 27 degrees. Fresh east to southeasterly winds, strong offshore at first. Seas will be rough with swells.

Outlook : Sunny periods on Thursday. 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 21:00 HKT 18/Oct/2016

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

GENERAL SITUATION AT 180900 UTC:
FOR DETAILS ON TYPHOON SARIKA (1621), PLEASE REFER TO THE 3-HRLY SHIPPING WARNINGS. SUPER TYPHOON HAIMA (1622) 920 HPA 16N 130E WNW 14KT INTST NC.

MARINE FORECAST FOR 24 HOURS FROM 181300 UTC:

HONG KONG= E TO SE 6-7, OCNL 8. DOWN TO 1000 M IN OCNL HEAVY SQUALLY SHOWERS AND TS. SEA UP TO 6 M. SWELL E TO SE 2-3 M. TEMP 24-27 C. =
KWANGTUNG= E TO SE 8-9, 10 IN W AT FIRST. DOWN TO 500 M IN FRQ HEAVY SQUALLY SHOWERS AND TS. SEA 6-8 M, 10 M IN W AT FIRST. 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. SEA 3-4 M. SWELL NE 2 M. =
BASHI= E TO NE 6-7, 8 LATER. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS LATER. SEA 3-4 M, 6 M LATER. SWELL NE 2 M, 3 M LATER. =
PRATAS= E TO SE 5-6, 7-8 AT FIRST. DOWN TO 1000 M IN OCNL HEAVY SQUALLY SHOWERS AND TS. SEA 2-3 M, 4-6 M AT FIRST. SWELL E TO SE 3 M, S TO SW 3-5 M. =
BALINTANG= E TO NE 6-7, 8-9 LATER. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS LATER. SEA 3-4 M, 6-8 M LATER. SWELL NE 2 M, 3 M LATER. =
SCARBOROUGH= S TO SE 5-6, UP TO 7 AT FIRST. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 2-3 M, UP TO 4 M AT FIRST. SWELL E TO SE 3 M, S TO SW 3 M. =
PARACEL= SW 11-12, BEC S 8-9. DOWN TO 500 M IN FRQ HEAVY SQUALLY SHOWERS AND TS. SEA 12-14 M, BEC 6-8 M. SWELL E TO SE 5-7 M, S TO SW 5-7 M. =
TONKIN= CYCLONIC 12, SW 6 LATER. DOWN TO 500 M IN FRQ HEAVY SQUALLY SHOWERS AND TS. SEA 14 M, 3 M LATER. SWELL NE 3 M. =
DANANG= W TO NW 10-11, BEC SW 6-7. DOWN TO 500 M IN FRQ HEAVY SQUALLY SHOWERS AND TS. SEA 10-12 M, BEC 3-4 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

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    9-day Weather Forecast | UV Index Forecast | Weather Information for Fishermen

    Bulletin issued at 23:30 HKT 18/Oct/2016

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 11:30 p.m. on 18 October 2016

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

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

    At 11 p.m., Severe Tropical Storm Sarika with maximum sustained winds of about 110 kilometres per hour near its centre was located at 19.8 degrees north, 109.2 degrees east, it is forecast to move 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 15.7 degrees north, 128.6 degrees east, it is forecast to move west-northwest at about 25 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, occasionally force 8.
    Occasional heavy squally showers and thunderstorms.
    Rough to very rough seas.

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

    South of Hong Kong:
    East to southeast force 7 to 8, occasionally force 9.
    Occasional heavy squally showers and thunderstorms.
    Very rough to high seas.

    Shangchuan Dao:
    Southeast force 8 to 9.
    Frequent heavy squally showers and thunderstorms.
    Very rough to high seas.

    Outlook for the next 48 hours
    East to northeasterly winds of force 6 to 7, becoming northerly winds of force 11 to 12 in east later. Occasional heavy squally showers and thunderstorms.

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

    Waglan Island Wind east force 5
      Visibility 400 Metres

    Shantou Wind east-northeast force 2
      Visibility 21 Kilometres in showers

    Dongsha Wind east-southeast force 4
      Visibility 8 Kilometres in rain

    Huangmaozhou Wind east force 6

    Macau Wind east force 4
      Visibility 13 Kilometres

    Xisha Wind southwest force 4
      Visibility 25 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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  • Tidal Information

    • WEATHER FORECAST FOR LOCAL AVIATION
    Traditional Chinese Simplified Chinese

    Weather Forecast for Local Aviation

    Bulletin issued at 01:30 HKT 19/OCT/2016
    (Next update at 9:00-9:30 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 :
     AT 11 P.M. LAST NIGHT, SEVERE TROPICAL STORM SARIKA WAS
     CENTRED NEAR 19.8 DEGREES NORTH, 109.2 DEGREES EAST. 
     IT IS FORECAST TO MOVE NORTHWEST AT ABOUT 6 KNOTS ACROSS
     BEIBU WAN.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 0200 TO 1200 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  090/15-20G30
       OFFSHORE:  090/25-30G40                         25-29
   B.   2000 FT:  100/25-30G40                         22
   C.   5000 FT:  120/35                               19
   D.  10000 FT:  150/30                               11
   E.  18000 FT:  150/30                               MS1
   F.  24000 FT:  180/35                               MS11
   G.  30000 FT:  180/25                               MS25
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL
   I. WEATHER       : 
      CLOUDY WITH OCCASIONAL SQUALLY SHOWERS AND A FEW ISOLATED
      THUNDERSTORMS.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1500 FT SCT 2500 FT 
      TEMPO FEW CB 1000 FT SCT 2000 FT BKN 6000 FT
   K. VISIBILITY    : 9 KM. TEMPO 2000 M IN SHOWERS/TS.
   L. 0 DEG. C LEVEL: 17500 FT      10 DEG. C LEVEL(S) : 11000 FT
   M. TURBULENCE    : MOD TO SEV NEAR CUNIM/TS AND AT LOW LEVELS
   N. SEA STATE     : 4.0-5.0 M     SEA TEMPERATURE    : 26 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE TO FRESH EAST TO SOUTHEASTERLY WINDS, OCCASIONALLY 
     STRONG OFFSHORE AND ON HIGH GROUND. CLOUDY WITH SQUALLY 
     SHOWERS. SHOWERS WILL EASE OFF LATER.=

    ===================================================================
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 23:25 HKT on 18 Oct 16

    VHHK SIGMET 4 VALID 181530/181930 VHHH- VHHK HONG KONG FIR EMBD TS FCST N OF N18 TOP FL450 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

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    Severe Weather Information Centre

    Bulletin issued at 00:31 HKT 19/Oct/2016


    Tropical Cyclone Warning

    At 181500 UTC, Severe Tropical Storm Sarika (1621) with central pressure 975 hectopascals was centred within 60 nautical miles of one nine point eight degrees north (19.8 N) one zero nine point two degrees east (109.2 E) and is forecast to move northwest at about 6 knots for the next 24 hours.

    Maximum winds near the centre are estimated to be 60 knots.

    Radius of over 33 knot winds 120 nautical miles.
    Radius of over 47 knot winds 30 nautical miles.
    Radius of over 2 metre waves 270 nautical miles over northern semicircle, 240 nautical miles elsewhere.

    Forecast position and intensity at 191500 UTC
    Two one point six degrees north (21.6 N)
    One zero seven point six degrees east (107.6 E)
    Maximum winds 35 knots.

    Forecast position and intensity at 201500 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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