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Bulletin issued at 21:02 HKT 25/Nov/2019

At 9 p.m. at the Hong Kong Observatory the air temperature was 23 degrees Celsius and the relative humidity 78 per cent.

Please be reminded that:

The Strong Monsoon Signal has been issued.

The air temperatures at other places were:

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


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


Climatological Information for 25 Nov

Regional Weather in Hong Kong

Information on Tropical Cyclones

Hong Kong Climatology


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Bulletin updated at 20:45 HKT 25/Nov/2019

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

A strong northeast monsoon is affecting the south China coastal areas.

Weather forecast for tonight and tomorrow

Mainly cloudy. Cooler with one or two light rain patches tomorrow morning. The minimum temperature will be about 19 degrees in the urban areas, and a couple of degrees lower in the New Territories. Bright periods during the day with a maximum temperature of around 22 degrees. Moderate to fresh east to northeasterly winds, strong offshore at first.

Outlook : Sunny periods in the following couple of days. Cool on Thursday and Friday mornings.


(The above forecast period is valid up to 23:59 HKT tomorrow, 26/11/2019; 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 25/Nov/2019

GALE WARNING AREAS: HONG KONG, KWANGTUNG, TAIWAN STRAIT, BASHI, PRATAS, BALINTANG AND SCARBOROUGH.

GENERAL SITUATION AT 250900 UTC:
AN INTENSE NORTHEAST MONSOON IS AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 251300 UTC:

HONG KONG= E TO NE 7-8. ONE OR TWO RAIN PATCHES. SEA 4-6 M. SWELL NE 2-3 M. TEMP 19-22 C. =
KWANGTUNG= NE 7-8. RAIN PATCHES. SEA 4-6 M. SWELL NE 2-3 M. =
TAIWAN STRAIT= NE 7-8. RAIN PATCHES. SEA 4-6 M. SWELL NE 3-4 M. =
BASHI= NE 7-8. ISOL SHOWERS. SEA 4-6 M. SWELL NE 3 M. =
PRATAS= NE 7-8. RAIN PATCHES. SEA 4-6 M. SWELL NE 2-3 M. =
BALINTANG= NE 7-8. ISOL SHOWERS AND TS. SEA 4-6 M. SWELL NE 3 M. =
SCARBOROUGH= NE 6-7, OCNL 8. ISOL SHOWERS AND TS. SEA UP TO 6 M. SWELL NE 2-3 M. =
PARACEL= NE 5-6, OCNL 7. ISOL SHOWERS. SEA UP TO 4 M. SWELL NE 2-3 M. =
TONKIN= N TO NE 5-6. FINE. SEA 2-3 M. =
DANANG= NE 5-6. ISOL SHOWERS AND TS. SEA 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.


  • 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 19:30 HKT 25/Nov/2019

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 7:30 p.m. on 25 November 2019

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

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

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    East to northeast force 7 to 8.
    One or two rain patches.
    Rough to very rough seas.

    Nan'ao, Shanwei and South of Hong Kong:
    Northeast force 7 to 8.
    Rough to very rough seas.

    Shangchuan Dao:
    Northeast force 6 to 7.
    Rough seas.

    Outlook for the next 48 hours
    Northeasterly winds of force 6 to 7, up to force 8 in east.

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

    Waglan Island Wind east force 7
      Visibility 15 Kilometres

    Shantou Wind east force 4
      Visibility 21 Kilometres

    Dongsha Wind northeast force 4
      Visibility 10 Kilometres

    Huangmaozhou Wind east force 8

    Macau Wind east force 3
      Visibility 12 Kilometres

    Xisha Wind northeast force 3
      Visibility 14 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 25/NOV/2019
    (Next update at 01:30 HKT 26/NOV/2019)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     STRONG WINDS AND SEV TURB.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     AN INTENSE 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:  070/15-20
       OFFSHORE:  070/25-30                            25-19
   B.   2000 FT:  070/20-25                            20
   C.   5000 FT:  070/15                               15
   D.  10000 FT:  200/15                               5
   E.  18000 FT:  270/20                               MS3
   F.  24000 FT:  290/25                               MS15
   G.  30000 FT:  280/30                               MS30
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL
   I. WEATHER       : 
      FINE AT FIRST. BECOMING CLOUDY TONIGHT.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 2500 FT. SCT 3500 FT
   K. VISIBILITY    : 9 KM.
   L. 0 DEG. C LEVEL: 15500 FT      10 DEG. C LEVEL(S) : 7200 FT
   M. TURBULENCE    : MOD TO SEV.
   N. SEA STATE     : 4.0-5.5 M     SEA TEMPERATURE    : 25 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE TO FRESH NORTHEASTERLY WINDS,
     OCCASIONALLY STRONG 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.

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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 25/Nov/2019 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     27.4 C
Minimum Air Temperature                     21.1 C
Grass Minimum Temperature                   18.4 C
Relative Humidity                        60 - 86 Percent
Rainfall                                       0 mm 
Total rainfall since 1st January          2382.7 mm
Against an average of                     2365.2 mm

Other Stations                Min                  Max
King's Park                  20.0 C               28.4 C
Wong Chuk Hang               18.2 C               27.7 C
Ta Kwu Ling                  15.4 C               29.8 C
Lau Fau Shan                 18.8 C               29.8 C
Tai Po                       18.6 C               27.3 C
Sha Tin                      17.7 C               27.8 C
Tuen Mun                     19.5 C               28.9 C
Tseung Kwan O                18.1 C               28.3 C
Sai Kung                     19.5 C               26.6 C
Cheung Chau                  19.0 C               29.2 C
Chek Lap Kok                 20.1 C               27.7 C
Tsing Yi                     19.1 C               28.4 C
Shek Kong                    16.7 C               28.6 C
Tsuen Wan Shing Mun Valley   17.3 C               28.7 C
Hong Kong Park               19.7 C               28.7 C
Shau Kei Wan                 19.6 C               27.3 C
Kowloon City                 20.1 C               29.7 C
Happy Valley                 18.0 C               28.1 C
Wong Tai Sin                 19.5 C               29.2 C
Stanley                      20.2 C               26.9 C
Kwun Tong                    20.1 C               27.2 C
Sham Shui Po                 19.5 C               29.9 C
Kai Tak Runway Park          20.5 C               27.0 C
Yuen Long Park               17.0 C               29.5 C
Tai Mei Tuk               19.3 C               28.5 C

Duration of sunshine (King's Park):              9.9 H
The mean UV index recorded at King's Park yesterday was 3,
the UV intensity was Moderate.
The maximum UV index for yesterday was 6.
 

Yesterday's (24 Nov 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                           0.12
Sai Wan Ho                          0.09
King's Park                         0.14
Tsim Bei Tsui                       0.13
Cape D'Aguilar                      0.13
Chek Lap Kok                        0.15

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 24 Nov
     2003copy right image | Important notices | Privacy policy Last revision date: <25 Nov 2019> 

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