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Bulletin issued at 15:02 HKT 20/Mar/2019

At 3 p.m. at the Hong Kong Observatory the air temperature was 24 degrees Celsius and the relative humidity 85 per cent.
During the past hour the mean UV Index recorded at King's Park was 3. The intensity of UV radiation was moderate.

The air temperatures at other places were:

King's Park 25 degrees;
Wong Chuk Hang 26 degrees;
Ta Kwu Ling 26 degrees;
Lau Fau Shan 26 degrees;
Tai Po 23 degrees;
Sha Tin 25 degrees;
Tuen Mun 25 degrees;
Tseung Kwan O 23 degrees;
Sai Kung 23 degrees;
Cheung Chau 26 degrees;
Chek Lap Kok 26 degrees;
Tsing Yi 27 degrees;
Shek Kong 27 degrees;
Tsuen Wan Ho Koon 26 degrees;
Tsuen Wan Shing Mun Valley 26 degrees;
Hong Kong Park 25 degrees;
Shau Kei Wan 23 degrees;
Kowloon City 25 degrees;
Happy Valley 27 degrees;
Wong Tai Sin 25 degrees;
Stanley 26 degrees;
Kwun Tong 24 degrees;
Sham Shui Po 25 degrees;
Kai Tak Runway Park 24 degrees;
Yuen Long Park 27 degrees;
Tai Mei Tuk 24 degrees.


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


Climatological Information for 20 Mar

Regional Weather in Hong Kong

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Hong Kong Climatology


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Bulletin updated at 14:45 HKT 20/Mar/2019

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

A warm maritime airstream is affecting the coast of Guangdong.

Weather forecast for this afternoon and tonight

Mainly cloudy with mist patches. Warm with sunny periods in the afternoon. Moderate southeasterly winds.

Outlook : Warm with sunny periods in the next couple of days. Becoming windy with rain and appreciably cooler later on Friday and over the weekend.


(The above forecast period is valid up to 23:59 HKT today, 20/03/2019; 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 20/Mar/2019

N0 WARNING.

GENERAL SITUATION AT 192100 UTC:
A SOUTHEASTERLY AIRSTREAM IS GENERALLY AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 200100 UTC:

HONG KONG= S TO SE 4-5. DOWN TO 500 M IN FOG PATCHES. SEA UP TO 2 M. SWELL E 2 M. TEMP 27-23 C. =
KWANGTUNG= S TO SE 4-5. DOWN TO 500 M IN FOG PATCHES. SEA UP TO 2 M. SWELL E 2 M. =
TAIWAN STRAIT= NE 5, BEC SE 4-5. DOWN TO 500 M IN FOG PATCHES. SEA UP TO 2 M. SWELL NE 2 M. =
BASHI= E TO SE 4-5. FINE. SEA UP TO 2 M. SWELL E TO NE 2-3 M. =
PRATAS= S TO SE 4-5. FINE. SEA UP TO 2 M. SWELL E 2 M. =
BALINTANG= E TO SE 4-5. FINE. SEA UP TO 2 M. SWELL E TO NE 2-3 M. =
SCARBOROUGH= E TO SE 4-5. FINE. SEA UP TO 2 M. SWELL E TO NE 2 M. =
PARACEL= S TO SE 4-5. DOWN TO 500 M IN FOG PATCHES. SEA UP TO 2 M. SWELL E 2 M. =
TONKIN= S TO SE 4-5, OCNL 6. DOWN TO 500 M IN FOG PATCHES. SEA UP TO 3 M. =
DANANG= S TO SE 4-5, OCNL 6. DOWN TO 500 M IN FOG PATCHES. SEA UP TO 3 M. SWELL E UP TO 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

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    9-day Weather Forecast | UV Index Forecast | Weather Information for Fishermen

    Bulletin issued at 12:30 HKT 20/Mar/2019

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 12:30 p.m. on 20 March 2019

    Warnings:
    Fog in all areas.

    Weather Situation:
    A southeasterly airstream is affecting the south China coastal waters.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    South to southeast force 4 to 5.
    Fog patches.
    Moderate seas.

    Nan'ao, Shanwei, South of Hong Kong and Shangchuan Dao:
    South to southeast force 4 to 5.
    Fog patches.
    Moderate seas.

    Outlook for the next 48 hours
    Southerly winds of force 4 to 5, becoming northeasterly winds of up to force 7. Fog patches. Isolated showers and thunderstorms later.

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

    Waglan Island Wind east-northeast force 2
      Visibility 8 Kilometres

    Shantou Wind east-northeast force 1
      Visibility 13 Kilometres

    Dongsha Wind east-southeast force 1
      Visibility 10 Kilometres

    Huangmaozhou Wind south-southeast force 3

    Macau Wind south-southeast force 2
      Visibility 3600 Metres in mist

    Xisha Wind southeast force 2
      Visibility 27 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 12:30 HKT 20/MAR/2019
    (Next update at 17:30 HKT 20/MAR/2019)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     NIL
II.  SYNOPSIS OF THE WEATHER SITUATION :
     A SOUTHEASTERLY AIRSTREAM 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:  140/5-10                             27-23
   B.   2000 FT:  160/15-20                            21
   C.   5000 FT:  210/15                               13
   D.  10000 FT:  220/20                               9
   E.  18000 FT:  250/30                               MS5
   F.  24000 FT:  230/50                               MS17
   G.  30000 FT:  240/70                               MS29
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL
   I. WEATHER       : 
      SUNNY PERIODS IN THE AFTERNOON. MAINLY CLOUDY
      TONIGHT.  LOCALIZED MIST.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1000 FT SCT 2500 FT
   K. VISIBILITY    : 7 KM. TEMPO 3000 M IN MIST.
   L. 0 DEG. C LEVEL: 15500 FT      10 DEG. C LEVEL(S) : 9600 FT
   M. TURBULENCE    : MOD NEAR HILLS
   N. SEA STATE     : 0.5-1.0 M     SEA TEMPERATURE    : 21 DEG
IV.  FURTHER OUTLOOK: 
     LIGHT TO MODERATE SOUTH TO SOUTHEASTERLY WINDS.
     MAINLY CLOUDY. LOCALIZED MIST.=

    ===================================================================
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 20/Mar/2019 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     27.4 C
Minimum Air Temperature                     20.7 C
Grass Minimum Temperature                   18.9 C
Relative Humidity                        68 - 93 Percent
Rainfall                                       0 mm 
Total rainfall since 1st January           240.7 mm
Against an average of                      118.1 mm

Other Stations                Min                  Max
King's Park                  19.8 C               27.7 C
Wong Chuk Hang               18.3 C               26.8 C
Ta Kwu Ling                  19.4 C               29.3 C
Lau Fau Shan                 19.2 C               28.0 C
Tai Po                       19.0 C               26.0 C
Sha Tin                      18.5 C               28.2 C
Tuen Mun                     20.0 C               27.7 C
Tseung Kwan O                18.2 C               27.6 C
Sai Kung                     19.2 C               26.4 C
Cheung Chau                  19.2 C               27.6 C
Chek Lap Kok                 20.7 C               28.7 C
Tsing Yi                     19.6 C               27.2 C
Shek Kong                    18.6 C               29.1 C
Tsuen Wan Ho Koon            18.6 C               27.1 C
Tsuen Wan Shing Mun Valley   18.8 C               28.1 C
Hong Kong Park               19.5 C               28.0 C
Shau Kei Wan                 19.3 C               26.1 C
Kowloon City                 19.8 C               28.4 C
Happy Valley                 19.0 C               28.2 C
Wong Tai Sin                 19.1 C               28.0 C
Stanley                      19.5 C               25.4 C
Kwun Tong                    19.5 C               27.6 C
Sham Shui Po                 20.1 C               27.9 C
Kai Tak Runway Park          20.0 C               26.6 C
Yuen Long Park               19.4 C               29.1 C
Tai Mei Tuk               19.5 C               28.6 C

Duration of sunshine (King's Park):              10.0 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 7.
 

Yesterday's (19 Mar 2019) average ambient gamma radiation
dose rate taken outdoors in Hong Kong ranged from 0.09 to
0.14 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                         0.11
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                        0.14

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 19 Mar
     2003copy right image | Important notices | Privacy policy Last revision date: <20 Mar 2019> 

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