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Bulletin issued at 22:02 HKT 28/Oct/2018

At 10 p.m. at the Hong Kong Observatory the air temperature was 24 degrees Celsius and the relative humidity 63 per cent.

Please be reminded that:

The Fire Danger Warning is Red and the fire risk is extreme.

The air temperatures at other places were:

King's Park 23 degrees;
Wong Chuk Hang 19 degrees;
Ta Kwu Ling 17 degrees;
Lau Fau Shan 21 degrees;
Tai Po 20 degrees;
Sha Tin 19 degrees;
Tuen Mun 21 degrees;
Tseung Kwan O 18 degrees;
Sai Kung 21 degrees;
Cheung Chau 21 degrees;
Chek Lap Kok 24 degrees;
Tsing Yi 21 degrees;
Shek Kong 19 degrees;
Tsuen Wan Ho Koon 20 degrees;
Tsuen Wan Shing Mun Valley 19 degrees;
Hong Kong Park 22 degrees;
Shau Kei Wan 22 degrees;
Kowloon City 23 degrees;
Happy Valley 21 degrees;
Wong Tai Sin 21 degrees;
Stanley 21 degrees;
Kwun Tong 23 degrees;
Sham Shui Po 21 degrees;
Kai Tak Runway Park 23 degrees;
Yuen Long Park 19 degrees;
Tai Mei Tuk 21 degrees.


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


Climatological Information for 28 Oct

Regional Weather in Hong Kong

Information on Tropical Cyclones

Hong Kong Climatology


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Bulletin updated at 21:45 HKT 28/Oct/2018

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

A dry northeast monsoon is affecting the coastal areas of Guangdong.

At 8 p.m., Super Typhoon Yutu was centred about 840 kilometres east-northeast of Manila. It is forecast to move west-southwest at about 18 kilometres per hour towards the seas east of Luzon.

Weather forecast for tonight and tomorrow

It will be fine. Cooler in the morning and at night. The minimum temperature will be 21 degrees in the urban areas, and a few degrees lower in the New Territories. Very dry during the day tomorrow with a maximum temperature of around 28 degrees. Moderate northeasterly winds.

Outlook : Cooler in the morning and at night and very dry during the day in the following couple of days. Mainly cloudy and windy in the latter part of this week.


(The above forecast period is valid up to 23:59 HKT tomorrow, 29/10/2018; 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 21:00 HKT 28/Oct/2018

STORM WARNING AREA: BALINTANG.
GALE WARNING AREAS: TAIWAN STRAIT, BASHI, PRATAS AND SCARBOROUGH.

GENERAL SITUATION AT 280900 UTC:
THE NORTHEAST MONSOON IS AFFECTING THE FORECAST AREAS. SUPER TYPHOON YUTU (1826) 925 HPA 18N 129E WSW 10 KT INTST NC.

MARINE FORECAST FOR 24 HOURS FROM 281300 UTC:

HONG KONG= N TO NE 4-5, UP TO 6 LATER. FINE. SEA 2 M, UP TO 3 M LATER. SWELL E TO NE 2 M. TEMP 21-28 C. =
KWANGTUNG= N TO NE 6-7. FINE. SEA 3-4 M. SWELL E TO NE 2-3 M. =
TAIWAN STRAIT= N TO NE 7-8. FINE. SEA 4-6 M. SWELL N TO NE 3 M. =
BASHI= N TO NE 7-8, 9 LATER. DOWN TO 1000 M IN SCT HEAVY SQUALLY SHOWERS AND TS. SEA 4-6 M, 8 M LATER. SWELL E TO NE 3-5 M. =
PRATAS= N TO NE 6-7, OCNL 8. FINE. SEA UP TO 6 M. SWELL E TO NE 3-5 M. =
BALINTANG= N TO NE 7-8, UP TO 11 LATER. DOWN TO 500 M IN FREQ HEAVY SQUALLY SHOWERS AND TS. SEA 4-6 M, UP TO 12 M LATER. SWELL E TO NE 3-5 M. =
SCARBOROUGH= N TO NE 7-8. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS LATER. SEA 4-6 M. SWELL E TO NE 3 M. =
PARACEL= N TO NE 6-7. FINE. SEA 3-4 M. SWELL E TO NE 3 M. =
TONKIN= NE 4-5, OCNL 6. ISOL SHOWERS. SEA UP TO 3 M. =
DANANG= N TO NE 5-6, OCNL 7. ISOL SHOWERS. SEA UP TO 4 M. SWELL E TO NE 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.


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    • 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 28/Oct/2018

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 7:30 p.m. on 28 October 2018

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

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

    At 7 p.m., Super Typhoon Yutu with maximum sustained winds of about 195 kilometres per hour near its centre was located at 17.8 degrees north, 128.2 degrees east. It is forecast to move west-southwest at about 18 kilometres per hour towards the seas east of Luzon.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    North to northeast force 4 to 5, up to force 6 later.
    Moderate to rough seas.

    Nan'ao:
    North to northeast force 6 to 7, up to force 8 later.
    Rough to very rough seas.

    Shanwei:
    North to northeast force 6 to 7.
    Rough seas.

    South of Hong Kong and Shangchuan Dao:
    North to northeast force 5 to 6.
    Moderate to rough seas.

    Outlook for the next 48 hours
    North to northeasterly winds of force 6 to 7, force 8 in east. Frequent heavy squally showers and thunderstorms in east later.

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

    Waglan Island Wind calm
      Visibility 19 Kilometres

    Shantou Wind southeast force 2
      Visibility 30 Kilometres

    Dongsha Wind northeast force 3
      Visibility 10 Kilometres

    Huangmaozhou Wind east force 2

    Macau Wind north force 3
      Visibility 24 Kilometres

    Xisha Wind northeast force 3
      Visibility 16 Kilometres

  • 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 17:30 HKT 28/OCT/2018
    (Next update at 01:30 HKT 29/OCT/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 COASTAL AREAS.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1800 TO 0400 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  020/5-10
       OFFSHORE:  040/10-15                            27-20
   B.   2000 FT:  040/15-20                            19
   C.   5000 FT:  030/20                               16
   D.  10000 FT:  360/20                               8
   E.  18000 FT:  330/25                               MS1
   F.  24000 FT:  300/25                               MS14
   G.  30000 FT:  270/25                               MS26
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      4000-5000 FT
   I. WEATHER       : 
      FINE
   J. CLOUD (HEIGHT ABOVE MSL) : 
      NO CLOUDS OF HEIGHT AT OR BELOW 10000 FT
   K. VISIBILITY    : 10 KM
   L. 0 DEG. C LEVEL: 16500 FT      10 DEG. C LEVEL(S) : 9000 FT
   M. TURBULENCE    : MOD AT LOW LEVELS
   N. SEA STATE     : 1.0-1.5 M     SEA TEMPERATURE    : 26 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE NORTHEASTERLY WINDS. 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 12:30 HKT on 20 Oct 18

    VHHK SIGMET 1 VALID 200040/200440 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N1706 E11418 - N1642 E11400 - N1930 E11130 - N2042 E11130 - N2012 E11242 - N1706 E11418 TOP FL450 MOV WNW 10KT NC= VHHK SIGMET 2 VALID 200440/200840 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N1718 E11430 - N1642 E11400 - N1930 E11130 - N2042 E11130 - N2024 E11300 - N1718 E11430 TOP FL480 MOV NW 05KT 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

    There is no tropical cyclone warning for shipping*.




    *Tropical cyclone warnings for shipping are issued by the Hong Kong Observatory for tropical cyclones located within the area bounded by 105E and 125E , 10N and 30N.




    For other tropical cyclone related information, please visit the World Meteorological Organization Web Site - Severe Weather Information Centre.

    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 28/Oct/2018 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     27.9 C
Minimum Air Temperature                     23.7 C
Grass Minimum Temperature                   21.0 C
Relative Humidity                        54 - 69 Percent
Rainfall                                       0 mm 
Total rainfall since 1st January          2077.6 mm
Against an average of                     2327.5 mm

Other Stations                Min                  Max
King's Park                  23.0 C               28.1 C
Wong Chuk Hang               20.8 C               28.0 C
Ta Kwu Ling                  19.1 C               29.5 C
Lau Fau Shan                 21.3 C               27.6 C
Tai Po                       21.4 C               26.0 C
Sha Tin                      20.8 C               27.8 C
Tuen Mun                     22.4 C               29.4 C
Tseung Kwan O                20.2 C               28.6 C
Sai Kung                     22.4 C               27.2 C
Cheung Chau                  21.7 C               29.0 C
Chek Lap Kok                 23.9 C               29.1 C
Tsing Yi                     21.8 C               28.2 C
Shek Kong                    19.2 C               29.2 C
Tsuen Wan Ho Koon            20.6 C               28.4 C
Tsuen Wan Shing Mun Valley   20.1 C               28.8 C
Hong Kong Park               22.9 C               28.5 C
Shau Kei Wan                 22.9 C               29.1 C
Kowloon City                 22.9 C               28.5 C
Happy Valley                 22.1 C               28.5 C
Wong Tai Sin                 22.7 C               28.0 C
Stanley                      22.7 C               28.6 C
Kwun Tong                    23.1 C               27.2 C
Sham Shui Po                 22.7 C               29.8 C
Kai Tak Runway Park          23.7 C               27.8 C
Yuen Long Park               21.0 C               29.2 C
Tai Mei Tuk               22.1 C               28.3 C

Duration of sunshine (King's Park):              6.7 H
The mean UV index recorded at King's Park yesterday was 2,
the UV intensity was Low.
The maximum UV index for yesterday was 6.
 

Yesterday's (27 Oct 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                           0.09
Tap Mun                             0.09
Kat O                               0.10
Yuen Ng Fan                         0.12
Tai Mei Tuk                         0.12
Sha Tau Kok                         0.10
Kwun Tong                           0.13
Sai Wan Ho                          0.09
King's Park                         0.15
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 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 27 Oct
     2003copy right image | Important notices | Privacy policy Last revision date: <28 Oct 2018> 

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