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Bulletin issued at 11:02 HKT 12/Mar/2018

At 11 a.m. at the Hong Kong Observatory the air temperature was 21 degrees Celsius and the relative humidity 60 per cent.
During the past hour the mean UV Index recorded at King's Park was 5. The intensity of UV radiation was moderate.

The air temperatures at other places were:

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


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


Climatological Information for 12 Mar

Regional Weather in Hong Kong

Information on Tropical Cyclones

Hong Kong Climatology


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Bulletin updated at 10:45 HKT 12/Mar/2018

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

The weather is generally fine over the coastal areas of Guangdong.

Weather forecast for today

Fine and dry. Moderate easterly winds.

Outlook : Warm during the day in the next couple of days and becoming humid with fog gradually. Some showers midweek this week.


(The above forecast period is valid up to 23:59 HKT today, 12/03/2018; 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 09:00 HKT 12/Mar/2018

N0 WARNING.

GENERAL SITUATION AT 112100 UTC:
AN EASTERLY AIRSTREAM IS AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 120100 UTC:

HONG KONG= E 4-5. FINE. SEA UP TO 2 M. TEMP 23-19 C. =
KWANGTUNG= E 5-6. FINE. SEA 2-3 M. SWELL NE 2 M. =
TAIWAN STRAIT= NE 5-6, OCNL 7. FINE. SEA UP TO 4 M. SWELL NE 2 M. =
BASHI= E 6-7. FINE. SEA 3-4 M. SWELL NE 2 M. =
PRATAS= E 6-7. FINE. SEA 3-4 M. SWELL NE 2 M. =
BALINTANG= E 6-7. FINE. SEA 3-4 M. SWELL NE 2 M. =
SCARBOROUGH= E TO NE 5-6, OCNL 7. FINE. SEA UP TO 4 M. SWELL NE 2 M. =
PARACEL= E 5-6. FINE. SEA 2-3 M. SWELL NE 2 M. =
TONKIN= E 4-5. FINE. SEA UP TO 2 M. =
DANANG= E 4-5. FINE. SEA UP TO 2 M. 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
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    • SOUTH CHINA COASTAL WATERS
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    South China Coastal Waters

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    Bulletin issued at 09:30 HKT 12/Mar/2018

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 9:30 a.m. on 12 March 2018

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

    Weather Situation:
    An easterly airstream is affecting the south China coastal waters.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    East force 4 to 5.
    Moderate seas.

    Nan'ao, Shanwei, South of Hong Kong and Shangchuan Dao:
    East force 5 to 6.
    Moderate to rough seas.

    Outlook for the next 48 hours
    East to southeasterly winds of force 4 to 5, occasionally force 6. Fog patches. Isolated showers and thunderstorms later.

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

    Waglan Island Wind north-northeast force 3
      Visibility 12 Kilometres

    Shantou Wind northeast force 1
      Visibility 8 Kilometres

    Dongsha Wind east force 3
      Visibility 10 Kilometres

    Huangmaozhou Wind east force 5

    Macau Wind northeast force 1
      Visibility 6 Kilometres

    Xisha Wind east-northeast force 2
      Visibility 18 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 09:30 HKT 12/MAR/2018
    (Next update at 12:30 HKT 12/MAR/2018)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     NIL
II.  SYNOPSIS OF THE WEATHER SITUATION :
     AN EASTERLY AIRSTREAM IS AFFECTING THE SOUTH
     CHINA COASTAL AREAS.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1000 TO 2000 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  080/10
       OFFSHORE:  080/15                               20-24
   B.   2000 FT:  110/15                               14
   C.   5000 FT:  110/10                               11
   D.  10000 FT:  270/15                               5
   E.  18000 FT:  270/30                               MS7
   F.  24000 FT:  260/65                               MS19
   G.  30000 FT:  250/80                               MS27
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      200-300 FT
   I. WEATHER       : 
      MAINLY FINE.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 3000 FT.
   K. VISIBILITY    : 7 KM.
   L. 0 DEG. C LEVEL: 12500 FT      10 DEG. C LEVEL(S) : 5400, 6400, 6800 FT
   M. TURBULENCE    : MOD OFFSHORE AND NEAR HILLS
   N. SEA STATE     : 1.0-2.0 M     SEA TEMPERATURE    : 18 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE EASTERLY WINDS. CLOUDY 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.

    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 15:35 HKT on 22 Feb 18

    VHHK SIGMET 1 VALID 220735/221135 VHHH- VHHK HONG KONG FIR SEV ICE FCST N OF N2030 AND E OF E11300 FL130/210 MOV E 10KT 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 12/Mar/2018 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     22.5 C
Minimum Air Temperature                     15.3 C
Grass Minimum Temperature                   14.2 C
Relative Humidity                        53 - 82 Percent
Rainfall                                       0 mm 
Total rainfall since 1st January            87.0 mm
Against an average of                       99.3 mm

Other Stations                Min                  Max
King's Park                  14.4 C               22.2 C
Wong Chuk Hang               15.2 C               22.4 C
Ta Kwu Ling                  12.0 C               23.2 C
Lau Fau Shan                 11.6 C               22.2 C
Tai Po                       14.7 C               21.2 C
Sha Tin                      13.5 C               22.1 C
Tuen Mun                     13.3 C               22.7 C
Tseung Kwan O                14.3 C               21.8 C
Sai Kung                     15.0 C               19.3 C
Cheung Chau                  14.5 C               21.5 C
Chek Lap Kok                 15.4 C               23.4 C
Tsing Yi                     15.0 C               24.1 C
Shek Kong                    12.4 C               24.6 C
Tsuen Wan Ho Koon            12.0 C               23.2 C
Tsuen Wan Shing Mun Valley   13.9 C               24.6 C
Hong Kong Park               15.3 C               21.7 C
Shau Kei Wan                 14.8 C               20.6 C
Kowloon City                 14.0 C               22.6 C
Happy Valley                 15.2 C               22.9 C
Wong Tai Sin                 14.5 C               22.8 C
Stanley                      15.1 C               19.9 C
Kwun Tong                    14.3 C               21.8 C
Sham Shui Po                 14.6 C               23.0 C
Kai Tak Runway Park          15.6 C               20.9 C
Yuen Long Park               11.8 C               25.3 C
Tai Mei Tuk               13.7 C               23.1 C

Duration of sunshine (King's Park):              10.7 H
The mean UV index recorded at King's Park yesterday was 4,
the UV intensity was Moderate.
The maximum UV index for yesterday was 8.
Sea surface temperature (Waglan Island):        17.7 C 

Yesterday's (11 Mar 2018) average ambient gamma radiation
dose rate taken outdoors in Hong Kong ranged from 0.08 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                           0.08
Tap Mun                             0.08
Kat O                               0.10
Yuen Ng Fan                         0.12
Tai Mei Tuk                         0.12
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 11 Mar
     2003copy right image | Important notices | Privacy policy Last revision date: <12 Mar 2018> 

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