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Bulletin issued at 09:02 HKT 26/Nov/2018

At 9 a.m. at the Hong Kong Observatory the air temperature was 18 degrees Celsius and the relative humidity 96 per cent.
During the past hour the mean UV Index recorded at King's Park was 0.4. The intensity of UV radiation was low.

The air temperatures at other places were:

King's Park 17 degrees;
Wong Chuk Hang 18 degrees;
Ta Kwu Ling 17 degrees;
Lau Fau Shan 17 degrees;
Tai Po 17 degrees;
Sha Tin 18 degrees;
Tuen Mun 17 degrees;
Tseung Kwan O 17 degrees;
Sai Kung 18 degrees;
Cheung Chau 17 degrees;
Chek Lap Kok 19 degrees;
Tsing Yi 18 degrees;
Shek Kong 17 degrees;
Tsuen Wan Ho Koon 16 degrees;
Tsuen Wan Shing Mun Valley 17 degrees;
Hong Kong Park 17 degrees;
Shau Kei Wan 17 degrees;
Kowloon City 17 degrees;
Happy Valley 18 degrees;
Wong Tai Sin 18 degrees;
Stanley 17 degrees;
Kwun Tong 17 degrees;
Sham Shui Po 18 degrees;
Kai Tak Runway Park 18 degrees;
Tai Mei Tuk 17 degrees.

Between 7:45 and 8:45 a.m., the rainfall recorded in various regions were:

Sai Kung 1 to 2 mm;
Wong Tai Sin 1 to 2 mm;
Yuen Long 0 to 1 mm;
Kwai Tsing 0 to 1 mm;
Eastern District 1 mm;
Islands District 0 to 1 mm;
Sham Shui Po 1 mm;
Tuen Mun 0 to 1 mm;
Central & Western District 0 to 1 mm;
Sha Tin 0 to 1 mm;
Wan Chai 1 mm;
Southern District 0 to 1 mm;
Yau Tsim Mong 1 mm;
Tai Po 0 to 1 mm;
Kowloon City 1 mm;
Tsuen Wan 1 mm;
Kwun Tong 1 mm.

Between midnight and 9 a.m. the minimum temperature was 17.0 degrees Celsius at the Hong Kong Observatory.


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


Climatological Information for 26 Nov

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Bulletin updated at 08:45 HKT 26/Nov/2018

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

The northeast monsoon is affecting the south China coast. Meanwhile, a band of clouds is bringing rainy weather to the region and the northern part of the South China Sea. Locally, more than 10 millimetres of rainfall were generally recorded this morning.

At 8 a.m., Tropical Depression Usagi was centred about 190 kilometres east-southeast of Phnom-Penh. It is forecast to move northwest at about 8 kilometres per hour across the southern part of Vietnam and weaken gradually. Meanwhile, Severe Tropical Storm Man-yi was centred about 920 kilometres southeast of Okinawa. It is forecast to move west-northwest at about 18 kilometres per hour across the western North Pacific.

Weather forecast for today

Cloudy. Cool with occasional rain in the morning. Rain will ease off with bright periods in the afternoon. The maximum temperature will be about 21 degrees. Moderate northeasterly winds.

Outlook : A few rain patches in the next couple of days. Sunny periods in the latter part of this week.


(The above forecast period is valid up to 23:59 HKT today, 26/11/2018; Regular update at : around 45 minutes past each hour, 16:15 HKT and 23:15 HKT)

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MARINE FORECAST
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Marine Forecast

Weather Information for the Marine Community

Bulletin issued at 09:00 HKT 26/Nov/2018

N0 WARNING.

GENERAL SITUATION AT 252100 UTC:
THE NORTHEAST MONSOON IS AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 260100 UTC:

HONG KONG= NE 4-5. OCNL RAIN. SEA UP TO 2 M. SWELL E TO NE 2 M. TEMP 21-19 C. =
KWANGTUNG= NE 6-7. ISOL SHOWERS AND TS. SEA 3-4 M. SWELL E TO NE 2-3 M. =
TAIWAN STRAIT= NE 6-7. ISOL SHOWERS AND TS. SEA 3-4 M. SWELL E TO NE 2 M. =
BASHI= E TO NE 6-7. ISOL SHOWERS AND TS. SEA 3-4 M. SWELL E TO NE 3 M. =
PRATAS= E TO NE 6-7. ISOL SHOWERS AND TS. SEA 3-4 M. SWELL NE 3 M. =
BALINTANG= E TO NE 6-7. ISOL SHOWERS. SEA 3-4 M. SWELL E TO NE 3 M. =
SCARBOROUGH= NE 5-6. ISOL SHOWERS AND TS. SEA 2-3 M. SWELL NE 2-3 M. =
PARACEL= NE 6-7. ISOL SHOWERS. SEA 3-4 M. SWELL NE 2-3 M. =
TONKIN= NE 5-6. ISOL SHOWERS. SEA 2-3 M. =
DANANG= NE 5-6, OCNL 7. ISOL SHOWERS AND TS. SEA UP TO 4 M. SWELL E TO NE 2-3 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.


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    • SOUTH CHINA COASTAL WATERS
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    South China Coastal Waters

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    Bulletin issued at 09:30 HKT 26/Nov/2018

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 9:30 a.m. on 26 November 2018

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

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

    At 9 a.m., Tropical Depression Usagi with maximum sustained winds of about 45 kilometres per hour near its centre was located at 11.1 degrees north, 106.6 degrees east. It is forecast to move northwest at about 8 kilometres per hour across the southern part of Vietnam and weaken gradually.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    Northeast force 4 to 5.
    Occasional rain.
    Moderate seas.

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

    South of Hong Kong and Shangchuan Dao:
    Northeast force 5 to 6, occasionally force 7.
    Moderate to rough seas.

    Outlook for the next 48 hours
    Northeasterly winds of force 6 to 7. Isolated showers and thunderstorms.

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

    Waglan Island Wind north-northeast force 4

    Shantou Wind south force 1
      Visibility 3400 Metres in rain

    Dongsha Wind east-northeast force 4
      Visibility 9 Kilometres in rain

    Huangmaozhou Wind northeast force 4

    Macau Wind northeast force 3
      Visibility 10 Kilometres

    Xisha Wind northeast force 4
      Visibility 10 Kilometres in showers

  • Explanation of Seas or Sea Waves
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    • WEATHER FORECAST FOR LOCAL AVIATION
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    Weather Forecast for Local Aviation

    Bulletin issued at 09:30 HKT 26/NOV/2018
    (Next update at 12:30 HKT 26/NOV/2018)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     NIL
II.  SYNOPSIS OF THE WEATHER SITUATION :
     THE NORTHEAST MONSOON IS AFFECTING THE SOUTH
     CHINA COAST. MEANWHILE, A BAND OF CLOUDS IS
     BRINGING RAINY WEATHER TO THE REGION AND THE
     NORTHERN PART OF THE SOUTH CHINA SEA.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1000 TO 2000 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  040/5-10
       OFFSHORE:  040/15-20                            17-21
   B.   2000 FT:  030/10-15                            15
   C.   5000 FT:  210/10                               13
   D.  10000 FT:  210/16                               6
   E.  18000 FT:  220/35                               MS5
   F.  24000 FT:  240/45                               MS17
   G.  30000 FT:  240/55                               MS27
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      2000-3000 FT
   I. WEATHER       : 
      CLOUDY WITH OCCASIONAL RAIN.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1000 FT SCT 1500 FT  BKN 5000 FT.
   K. VISIBILITY    : 7 KM.  TEMPO 3000 M IN RAIN.
   L. 0 DEG. C LEVEL: 15000 FT      10 DEG. C LEVEL(S) : 7400 FT
   M. TURBULENCE    : MOD OFFSHORE
   N. SEA STATE     : 2.0-2.5 M     SEA TEMPERATURE    : 23 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE NORTHEASTERLY WINDS.  MAINLY CLOUDY
     WITH A FEW RAIN PATCHES.=

    ===================================================================
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.

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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.

    There is no Significant Weather Information (SIGMET)

    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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    Bulletin issued at 00:30 HKT 26/Nov/2018


    Tropical Cyclone Warning

    Tropical Storm Usagi (1829) has weakened into a Tropical Depression with central pressure 1000 hectopascals. At 251500 UTC, it was centred within 90 nautical miles of one zero point seven degrees north (10.7 N) one zero six point eight degrees east (106.8 E) and is forecast to move northwest at about 4 knots for the next 24 hours.

    Maximum winds near the centre are estimated to be 30 knots.

    Radius of over 2 metre waves 60 nautical miles.

    No further warnings on this Tropical Depression will be issued by the Hong Kong Observatory unless re-intensification takes place.

    Forecast position and intensity at 261500 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 26/Nov/2018 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     21.6 C
Minimum Air Temperature                     17.4 C
Grass Minimum Temperature                   19.0 C
Relative Humidity                        67 - 96 Percent
Rainfall                                    21.0 mm 
Total rainfall since 1st January          2111.3 mm
Against an average of                     2365.9 mm

Other Stations                Min                  Max
King's Park                  16.7 C               21.5 C
Wong Chuk Hang               16.7 C               21.5 C
Ta Kwu Ling                  16.7 C               20.8 C
Lau Fau Shan                 16.2 C               20.7 C
Tai Po                       16.4 C               20.7 C
Sha Tin                      17.1 C               21.4 C
Tuen Mun                     16.5 C               21.2 C
Tseung Kwan O                16.7 C               20.6 C
Sai Kung                     17.2 C               21.2 C
Cheung Chau                  16.2 C               21.2 C
Chek Lap Kok                 17.0 C               22.8 C
Tsing Yi                     16.7 C               22.1 C
Shek Kong                    16.5 C               21.5 C
Tsuen Wan Ho Koon            15.8 C               20.3 C
Tsuen Wan Shing Mun Valley   16.4 C               21.3 C
Hong Kong Park               16.6 C               21.4 C
Shau Kei Wan                 16.4 C               21.5 C
Kowloon City                 16.5 C               21.3 C
Happy Valley                 17.3 C               21.8 C
Wong Tai Sin                 17.0 C               21.6 C
Stanley                      16.8 C               21.4 C
Kwun Tong                    16.7 C               21.0 C
Sham Shui Po                 16.7 C               22.0 C
Kai Tak Runway Park          17.3 C               21.9 C
Yuen Long Park               16.3 C               21.1 C
Tai Mei Tuk               16.4 C               21.6 C

Duration of sunshine (King's Park):              0.0 H
The mean UV index recorded at King's Park yesterday was 0.7,
the UV intensity was Low.
The maximum UV index for yesterday was 2.
 

Yesterday's (25 Nov 2018) average ambient gamma radiation
dose rate taken outdoors in Hong Kong ranged from 0.09 to
0.15 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                           0.10
Tap Mun                             0.09
Kat O                               0.10
Yuen Ng Fan                         0.12
Tai Mei Tuk                         0.12
Sha Tau Kok                         0.11
Kwun Tong                           0.13
Sai Wan Ho                          0.09
King's Park                         0.15
Tsim Bei Tsui                       0.13
Cape D'Aguilar                      0.14
Chek Lap Kok                        0.15

Note

      

    1. From readings taken at various locations in Hong Kong in the
past, the hourly mean ambient gamma radiation dose rate may
vary between 0.06 and 0.3 microsievert per hour. (1
microsievert = 0.000001 sievert = 0.001 millisievert)

    2. Temporal variations are generally caused by changes in
meteorological conditions such as rainfall, wind and
barometric pressure.

    3. Spatial variations are generally caused by differences in
the radioactive content of local rock and soil.

    4. The data displayed is provisional. Only limited data
validation has been carried out.
    Climatological Information for 25 Nov
     2003copy right image | Important notices | Privacy policy Last revision date: <26 Nov 2018> 

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