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Bulletin issued at 12:02 HKT 25/Nov/2019

At noon at the Hong Kong Observatory the air temperature was 26 degrees Celsius and the relative humidity 68 per cent.
During the past hour the mean UV Index recorded at King's Park was 5. The intensity of UV radiation was moderate.

Please be reminded that:

The Strong Monsoon Signal has been issued.

The air temperatures at other places were:

King's Park 26 degrees;
Wong Chuk Hang 26 degrees;
Ta Kwu Ling 28 degrees;
Lau Fau Shan 29 degrees;
Tai Po 25 degrees;
Sha Tin 27 degrees;
Tuen Mun 28 degrees;
Tseung Kwan O 26 degrees;
Sai Kung 25 degrees;
Cheung Chau 28 degrees;
Chek Lap Kok 29 degrees;
Tsing Yi 26 degrees;
Shek Kong 27 degrees;
Tsuen Wan Ho Koon 27 degrees;
Tsuen Wan Shing Mun Valley 28 degrees;
Hong Kong Park 26 degrees;
Shau Kei Wan 24 degrees;
Kowloon City 27 degrees;
Happy Valley 25 degrees;
Wong Tai Sin 27 degrees;
Stanley 25 degrees;
Kwun Tong 26 degrees;
Sham Shui Po 28 degrees;
Kai Tak Runway Park 25 degrees;
Yuen Long Park 28 degrees;
Tai Mei Tuk 28 degrees.

No rainfall was recorded at the Hong Kong Observatory between midnight last night and midday today.


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 11:45 HKT 25/Nov/2019

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

An intense northeast monsoon is affecting the south China coastal areas.

Weather forecast for this afternoon and tonight

Mainly fine. Dry in the afternoon. Becoming cloudy with one or two light rain patches tonight. Moderate to fresh east to northeasterly winds, strong offshore.

Outlook : Cooler and windy in the next couple of days. Cool on Thursday and Friday mornings.


(The above forecast period is valid up to 23:59 HKT today, 25/11/2019; 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 09:00 HKT 25/Nov/2019

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

GENERAL SITUATION AT 242100 UTC:
THE NORTHEAST MONSOON IS AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 250100 UTC:

HONG KONG= NE 5-6. LIGHT RAIN PATCHES. SEA 2-3 M. SWELL E TO NE 2 M. TEMP 26-19 C. =
KWANGTUNG= NE 5-6, 7-8 LATER. LIGHT RAIN PATCHES. SEA 2-3 M, 4-6 M LATER. SWELL E TO NE 3 M. =
TAIWAN STRAIT= NE 7-8, OCNL 9. LIGHT RAIN PATCHES. SEA UP TO 8 M. SWELL NE 3-4 M. =
BASHI= NE 5-6, BEC 7-8. ISOL SHOWERS. SEA 2-3 M, BEC 4-6 M. SWELL E TO NE 3 M. =
PRATAS= NE 5-6, 7-8 LATER. ISOL SHOWERS. SEA 2-3 M, 4-6 M LATER. SWELL E TO NE 3 M. =
BALINTANG= NE 5-6, 7-8 LATER. ISOL SHOWERS. SEA 2-3 M, 4-6 M LATER. SWELL E TO NE 3 M. =
SCARBOROUGH= NE 5-6. CLD. SEA UP TO 2-3 M. SWELL NE 3 M. =
PARACEL= NE 4-5, 6-7 LATER. ISOL SHOWERS AND TS. SEA UP TO 2 M, 3-4 M LATER. SWELL E TO NE 3 M. =
TONKIN= N TO NE 5-6. CLD. SEA 2-3 M. =
DANANG= NE 4-5, OCNL 6. ISOL SHOWERS AND TS. SEA UP TO 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 12:30 HKT 25/Nov/2019

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 12:30 p.m. on 25 November 2019

    Warnings:
    Gale force winds in Nan'ao, Shanwei and south of Hong Kong. Strong winds in Hong Kong adjacent waters and 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 5 to 6, occasionally force 7.
    One or two rain patches.
    Moderate to rough seas.

    Nan'ao and Shanwei:
    Northeast force 6 to 7, becoming force 8.
    Rough seas, becoming very rough.

    South of Hong Kong:
    Northeast force 5 to 6, becoming force 7 to 8.
    Moderate to rough seas, becoming rough to very rough.

    Shangchuan Dao:
    Northeast force 5 to 6.
    Moderate to rough seas.

    Outlook for the next 48 hours
    East to northeasterly winds of force 7 to 8.

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

    Waglan Island Wind east-northeast force 6
      Visibility 23 Kilometres

    Shantou Wind east-southeast force 2
      Visibility 30 Kilometres

    Dongsha Wind northeast force 4
      Visibility 10 Kilometres

    Huangmaozhou Wind east force 7

    Macau Wind northeast force 2
      Visibility 3800 Metres in haze

    Xisha Wind northeast force 3
      Visibility 13 Kilometres

  • Explanation of Seas or Sea Waves
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  • Visibility Readings in Hong Kong Waters
  • Map showing forecast areas
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    • WEATHER FORECAST FOR LOCAL AVIATION
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    Weather Forecast for Local Aviation

    Bulletin issued at 12:30 HKT 25/NOV/2019
    (Next update at 17:30 HKT 25/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 1300 TO 2300 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  070/15-20
       OFFSHORE:  070/25-30                            29-21
   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       : 
      MAINLY FINE. LOCALISED HAZE AT FIRST.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 3000 FT.
   K. VISIBILITY    : 8 KM. TEMPO 4000 M IN HAZE.
   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. CLOUDY. ONE OR TWO
     LIGHT 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.

    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.

    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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