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Bulletin issued at 19:02 HKT 07/Mar/2018

At 7 p.m. at the Hong Kong Observatory the air temperature was 20 degrees Celsius and the relative humidity 82 per cent.

A cold front will reach the coast of Guangdong overnight tonight (Wednesday). Locally, it will become cool appreciably with a few rain patches tomorrow (Thursday). Temperatures in the urban areas will fall from about 19 degrees at midnight to a minimum of around 13 degrees, and a couple of degrees lower in the New Territories. Members of the public should be aware of the change in weather before going out tomorrow morning.

The air temperatures at other places were:

King's Park 20 degrees;
Wong Chuk Hang 20 degrees;
Ta Kwu Ling 20 degrees;
Lau Fau Shan 21 degrees;
Tai Po 19 degrees;
Sha Tin 20 degrees;
Tuen Mun 21 degrees;
Tseung Kwan O 19 degrees;
Sai Kung 19 degrees;
Cheung Chau 19 degrees;
Chek Lap Kok 21 degrees;
Tsing Yi 21 degrees;
Shek Kong 21 degrees;
Tsuen Wan Ho Koon 20 degrees;
Tsuen Wan Shing Mun Valley 21 degrees;
Hong Kong Park 20 degrees;
Shau Kei Wan 18 degrees;
Kowloon City 20 degrees;
Happy Valley 20 degrees;
Wong Tai Sin 20 degrees;
Stanley 19 degrees;
Kwun Tong 19 degrees;
Sham Shui Po 21 degrees;
Kai Tak Runway Park 19 degrees;
Yuen Long Park 21 degrees;
Tai Mei Tuk 19 degrees.


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


Climatological Information for 7 Mar

Regional Weather in Hong Kong

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Hong Kong Climatology


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Bulletin updated at 18:45 HKT 07/Mar/2018

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

A cold front is crossing inland Guangdong. It is expected to reach the coastal areas overnight tonight.

Weather forecast for tonight and tomorrow

Becoming cool appreciably. Temperatures in the urban areas will fall from about 19 degrees at midnight to a minimum of around 13 degrees tomorrow, and a couple of degrees lower in the New Territories. Mainly cloudy with a few rain patches tomorrow. Isolated thunderstorms in the morning. Moderate easterly winds, becoming fresh northerlies tomorrow, occasionally strong offshore.

Outlook : Fine and dry in the following few days. Cold morning on Friday.


(The above forecast period is valid up to 23:59 HKT tomorrow, 08/03/2018; 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 07/Mar/2018

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

GENERAL SITUATION AT 062100 UTC:
AN INTENSE NORTHEAST MONSOON IS AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 070100 UTC:

HONG KONG= E 6-7, N UP TO 8 LATER. DOWN TO 2000 M IN MIST OR LGT RAIN PATCHES. SEA 3-4 M, UP TO 6 M LATER. SWELL E 2-3 M. TEMP 22-13 C. =
KWANGTUNG= E TO NE 6-7, N 8 LATER. DOWN TO 2000 M IN MIST OR RAIN PATCHES. SEA 3-4 M, 6 M LATER. SWELL E 2-3 M. =
TAIWAN STRAIT= E TO NE 6-7, N 8 LATER. DOWN TO 2000 M IN MIST OR RAIN PATCHES. SEA 3-4 M, 6 M LATER. SWELL NE 3 M. =
BASHI= NE 6-7. RAIN PATCHES. SEA 3-4 M. SWELL NE 2-3 M. =
PRATAS= E TO NE 6-7, N 7 LATER. RAIN PATCHES. SEA 3-4 M. SWELL NE 2-3 M. =
BALINTANG= NE 6-7, OCNL 8. RAIN PATCHES. SEA UP TO 6 M. SWELL NE 2-3 M. =
SCARBOROUGH= NE 7-8. RAIN PATCHES LATER. SEA 4-6 M. SWELL NE 2-3 M. =
PARACEL= E 6-7, N 7 LATER. DOWN TO 2000 M IN MIST OR RAIN PATCHES. SEA 3-4 M. SWELL NE 2-3 M. =
TONKIN= E TO SE 4-5, BEC N 7-8. DOWN TO 2000 M IN MIST OR RAIN PATCHES. SEA 2 M, BEC 4-6 M. SWELL NE UP TO 3 M LATER. =
DANANG= E TO SE 4-5, N 6-7 LATER. DOWN TO 2000 M IN MIST OR RAIN PATCHES. SEA 2 M, 3-4 M LATER. SWELL NE 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.


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    • SOUTH CHINA COASTAL WATERS
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    South China Coastal Waters

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    Bulletin issued at 19:30 HKT 07/Mar/2018

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 7:30 p.m. on 07 March 2018

    Warnings:
    Gale force winds in all areas.

    Weather Situation:
    A cold front is crossing inland Guangdong. It is expected to reach the south China coastal waters overnight tonight.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    East force 5 to 6, becoming north up to force 8.
    A few light rain patches and mist, isolated showers and thunderstorms later.
    Moderate to rough seas, becoming very rough seas.

    Nan'ao, Shanwei and South of Hong Kong:
    East to northeast force 6 to 7, becoming north force 8.
    Isolated showers and thunderstorms later.
    Rough seas, becoming very rough seas.

    Shangchuan Dao:
    East force 5 to 6, becoming north force 7 to 8.
    Isolated showers and thunderstorms later.
    Moderate to rough seas, becoming rough to very rough seas.

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

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

    Waglan Island Wind north-northeast force 3
      Visibility 14 Kilometres

    Shantou Wind southeast force 2
      Visibility 26 Kilometres

    Dongsha Wind east-northeast force 4
      Visibility 10 Kilometres

    Huangmaozhou Wind northeast force 4

    Macau Wind southeast force 1
      Visibility 10 Kilometres

    Xisha Wind east force 2
      Visibility 21 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 07/MAR/2018
    (Next update at 01:30 HKT 08/MAR/2018)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     STRONG WINDS AND SEV TURB.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     A COLD FRONT IS CROSSING INLAND GUANGDONG. IT IS
     EXPECTED TO REACH THE SOUTH CHINA COASTAL WATERS
     OVERNIGHT TONIGHT.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1800 TO 0400 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  100/10-15
                  BEC 010/15
       OFFSHORE:  090/15-20
                  BEC 010/20-25, OCNL 30               22-17
   B.   2000 FT:  070/20-25                            13
   C.   5000 FT:  200/15                               13
   D.  10000 FT:  270/20                               7
   E.  18000 FT:  250/45                               MS7
   F.  24000 FT:  270/60                               MS17
   G.  30000 FT:  270/70                               MS28
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      1800-2700 FT
   I. WEATHER       : 
      MAINLY CLOUDY WITH A FEW LIGHT RAIN PATCHES.
      ISOLATED THUNDERSTORM LATER
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1500 FT  SCT 3000 FT
      TEMPO FEW CB 800 FT SCT 1500 FT
   K. VISIBILITY    : 9 KM. TEMPO 3500 M IN RAIN.
   L. 0 DEG. C LEVEL: 15000 FT      10 DEG. C LEVEL(S) : 7200 FT
   M. TURBULENCE    : MOD TO SEV
   N. SEA STATE     : 2.0-3.0 M     SEA TEMPERATURE    : 17 DEG
IV.  FURTHER OUTLOOK: 
     FRESH TO STRONG NORTHERLY WINDS. MAINLY CLOUDY
     WITH A FEW RAIN PATCHES AND ISOLATED THUNDERSTORM IN THE MORNING.=

    ===================================================================
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 07/Mar/2018 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     23.5 C
Minimum Air Temperature                     18.3 C
Grass Minimum Temperature                   18.7 C
Relative Humidity                        69 - 94 Percent
Rainfall                                      Trace 
Total rainfall since 1st January            66.7 mm
Against an average of                       95.9 mm

Other Stations                Min                  Max
King's Park                  17.6 C               23.1 C
Wong Chuk Hang               18.0 C               22.1 C
Ta Kwu Ling                  17.6 C               22.0 C
Lau Fau Shan                 18.2 C               26.6 C
Tai Po                       18.2 C               21.6 C
Sha Tin                      17.7 C               22.4 C
Tuen Mun                     18.8 C               23.8 C
Tseung Kwan O                17.1 C               21.3 C
Sai Kung                     17.5 C               21.3 C
Cheung Chau                  17.5 C               22.3 C
Chek Lap Kok                 18.9 C               25.5 C
Tsing Yi                     18.6 C               22.7 C
Shek Kong                    18.8 C               23.6 C
Tsuen Wan Ho Koon            17.2 C               22.4 C
Tsuen Wan Shing Mun Valley   18.1 C               23.2 C
Hong Kong Park               17.6 C               22.4 C
Shau Kei Wan                 16.6 C               21.9 C
Kowloon City                 17.6 C               23.3 C
Happy Valley                 17.7 C               23.4 C
Wong Tai Sin                 17.7 C               23.1 C
Stanley                      17.0 C               21.4 C
Kwun Tong                    16.8 C               23.6 C
Sham Shui Po                 18.6 C               23.3 C
Kai Tak Runway Park          17.7 C               21.4 C
Yuen Long Park               19.2 C               24.3 C
Tai Mei Tuk               17.4 C               21.9 C

Duration of sunshine (King's Park):              1.8 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.
Sea surface temperature (Waglan Island):        17.3 C 

Yesterday's (06 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                             0.09
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                         0.15
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 06 Mar
     2003copy right image | Important notices | Privacy policy Last revision date: <07 Mar 2018> 

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