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Bulletin issued at 23:02 HKT 28/Oct/2019

At 11 p.m. at the Hong Kong Observatory the air temperature was 22 degrees Celsius and the relative humidity 68 per cent.

The air temperatures at other places were:

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

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Bulletin updated at 23:15 HKT 28/Oct/2019

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

The northeast monsoon affecting the coast of Guangdong strengthened gradually today, and brought slightly cooler weather to the region. Locally, it was mainly cloudy with one or two rain patches. There were sunny intervals in the afternoon and visibility was relatively low in some areas. With the strengthening of the northeast monsoon, it will be windy and slightly cooler over the south China coast in the next couple of days.

Weather forecast for Hong Kong (Tuesday, 29 Oct 2019)

Mainly cloudy. Slightly cooler with a minimum temperature of about 21 degrees in the urban areas, and a couple of degrees lower in the New Territories. Dry with sunny periods during the day. The maximum temperature will be around 27 degrees. Moderate to fresh northerly winds.

Outlook : Dry and slightly cooler with sunny periods in the following couple of days.


(The above forecast period is valid up to 23:59 HKT tomorrow, 29/10/2019; 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/2019

N0 WARNING.

GENERAL SITUATION AT 280900 UTC:
THE NORTHEAST MONSOON IS AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 281300 UTC:

HONG KONG= N TO NE 5-6. RAIN PATCHES AT FIRST. SEA 2-3 M. TEMP 21-27 C. =
KWANGTUNG= N TO NE 5-6, OCNL 7. RAIN PATCHES. SEA UP TO 4 M. SWELL NE UP TO 2 M. =
TAIWAN STRAIT= NE 5-6, BEC 7. RAIN PATCHES. SEA 2-3 M, BEC 4 M. SWELL NE 2 M. =
BASHI= NE 5-6, BEC 7. ISOL SHOWERS AND TS. SEA 2-3 M, BEC 4 M. SWELL NE 2 M. =
PRATAS= NE 5-6, OCNL 7 LATER. RAIN PATCHES. SEA 2-3 M, UP TO 4 M LATER. SWELL NE 2 M. =
BALINTANG= NE 5-6. ISOL SHOWERS AND TS. SEA 2-3 M. SWELL NE 2 M. =
SCARBOROUGH= E TO NE 5-6, OCNL 7. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA UP TO 4 M. SWELL NE 2 M. =
PARACEL= NE 5-6, OCNL 7 LATER. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 2-3 M, UP TO 4 M LATER. SWELL NE 2 M. =
TONKIN= N TO NE 5-6, OCNL 7. ISOL SHOWERS AND TS. SEA UP TO 4 M. =
DANANG= N TO NE 5-6, OCNL 7 LATER. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 2-3 M, UP TO 4 M LATER. SWELL 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.


  • 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
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    Bulletin issued at 23:30 HKT 28/Oct/2019

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 11:30 p.m. on 28 October 2019

    Warnings:
    Strong winds in all areas.

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

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    North to northeast force 5 to 6.
    One or two rain patches at first.
    Moderate to rough seas.

    Nan'ao and Shanwei:
    Northeast force 5 to 6, occasionally force 7.
    Moderate to rough seas.

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

    Outlook for the next 48 hours
    Northeasterly winds of force 6 to 7.

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

    Waglan Island Wind north force 4
      Visibility 50 Kilometres or above

    Shantou Wind west-southwest force 2
      Visibility 30 Kilometres

    Dongsha Wind northeast force 3
      Visibility 10 Kilometres

    Huangmaozhou Wind north force 4

    Xisha Wind northeast force 3
      Visibility 17 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/2019
    (Next update at 01:30 HKT 29/OCT/2019)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     STRONG WINDS AND SEV TURB.
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:  350/10-15, OCNL 20
       OFFSHORE:  350/15-20, OCNL 25                   25-21
   B.   2000 FT:  350/15-20, OCNL 25                   18
   C.   5000 FT:  340/15                               16
   D.  10000 FT:  300/20                               9
   E.  18000 FT:  270/25                               MS3
   F.  24000 FT:  270/30                               MS13
   G.  30000 FT:  250/35                               MS26
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      MAINLY CLOUDY. A FEW RAIN PATCHES AT FIRST.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 2000 FT SCT 3000 FT.
   K. VISIBILITY    : 8 KM. TEMPO 4000 M IN RAIN.
   L. 0 DEG. C LEVEL: 16500 FT      10 DEG. C LEVEL(S) : 8200 FT
   M. TURBULENCE    : MOD TO SEV AT LOW LEVELS.
   N. SEA STATE     : 2.0-3.5 M     SEA TEMPERATURE    : 27 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE TO FRESH NORTHERLY WINDS, OCCASIONALLY
     STRONG OFFSHORE AT FIRST. SUNNY PERIODS.=

    ===================================================================
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

    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/2019 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     29.0 C
Minimum Air Temperature                     24.0 C
Grass Minimum Temperature                   23.6 C
Relative Humidity                        66 - 83 Percent
Rainfall                                      trace 
Total rainfall since 1st January          2382.7 mm
Against an average of                     2327.5 mm

Other Stations                Min                  Max
King's Park                  23.3 C               28.6 C
Wong Chuk Hang               23.8 C               27.8 C
Ta Kwu Ling                  20.9 C               29.6 C
Lau Fau Shan                 21.2 C               28.7 C
Tai Po                       23.0 C               27.3 C
Sha Tin                      23.4 C               28.4 C
Tuen Mun                     22.8 C               29.2 C
Tseung Kwan O                22.0 C               28.1 C
Sai Kung                     23.2 C               27.2 C
Cheung Chau                  22.9 C               29.3 C
Chek Lap Kok                 23.8 C               28.7 C
Tsing Yi                     23.8 C               28.6 C
Shek Kong                    22.0 C               29.1 C
Tsuen Wan Ho Koon            21.2 C               27.9 C
Tsuen Wan Shing Mun Valley   22.5 C               28.5 C
Hong Kong Park               23.6 C               28.0 C
Shau Kei Wan                 21.8 C               27.5 C
Kowloon City                 22.9 C               29.7 C
Happy Valley                 23.6 C               28.5 C
Wong Tai Sin                 23.2 C               29.1 C
Stanley                      23.2 C               28.1 C
Kwun Tong                    22.6 C               28.4 C
Sham Shui Po                 23.0 C               29.6 C
Kai Tak Runway Park          23.8 C               27.7 C
Yuen Long Park               22.2 C               30.0 C
Tai Mei Tuk               22.3 C               29.8 C

Duration of sunshine (King's Park):              8.1 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 2019) 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                               0.11
Yuen Ng Fan                         0.12
Tai Mei Tuk                         0.11
Sha Tau Kok                         0.10
Kwun Tong                           0.13
Sai Wan Ho                          0.10
King's Park                         0.14
Tsim Bei Tsui                       0.13
Cape D'Aguilar                      0.13
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 27 Oct
     2003copy right image | Important notices | Privacy policy Last revision date: <28 Oct 2019> 

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