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Bulletin issued at 16:21 HKT 10/Feb/2018

At 4 p.m. at the Hong Kong Observatory the air temperature was 20 degrees Celsius and the relative humidity 69 per cent.
During the past hour the mean UV Index recorded at King's Park was 2. The intensity of UV radiation was low.

Please be reminded that:

The Cold Weather Warning was issued at 4:20 p.m. Cold weather might cause adverse health effects. Members of the public should take care to keep warm.

The air temperatures at other places were:

King's Park 20 degrees;
Wong Chuk Hang 19 degrees;
Ta Kwu Ling 24 degrees;
Tai Po 19 degrees;
Sha Tin 23 degrees;
Tuen Mun 23 degrees;
Tseung Kwan O 20 degrees;
Sai Kung 18 degrees;
Cheung Chau 19 degrees;
Chek Lap Kok 22 degrees;
Tsing Yi 21 degrees;
Shek Kong 23 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 22 degrees;
Happy Valley 21 degrees;
Wong Tai Sin 21 degrees;
Stanley 18 degrees;
Kwun Tong 22 degrees;
Sham Shui Po 21 degrees;
Kai Tak Runway Park 18 degrees;
Yuen Long Park 23 degrees;
Tai Mei Tuk 22 degrees.


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


Climatological Information for 10 Feb

Regional Weather in Hong Kong

Information on Tropical Cyclones

Hong Kong Climatology


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Bulletin updated at 16:15 HKT 10/Feb/2018

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

A cold front over the northern part of Guangdong is moving southwards gradually. It is expected to reach the coastal areas overnight.

Weather forecast for tonight and tomorrow

Mainly cloudy with relatively low visibility in some areas at first. Becoming cold and dry tomorrow. The minimum temperature will be about 12 degrees. Sunny intervals during the day with a maximum temperature of around 16 degrees. Light winds, becoming moderate to fresh northerly winds overnight.

Outlook : Mainly fine with cold morning on Monday. Temperatures rising towards the Lunar New Year.


(The above forecast period is valid up to 23:59 HKT tomorrow, 11/02/2018; 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 10/Feb/2018

GALE WARNING AREAS: TAIWAN STRAIT, BASHI AND BALINTANG.

GENERAL SITUATION AT 092100 UTC:
AN EASTERLY AIRSTREAM IS AFFECTING THE FORECAST AREAS. THE NORTHEAST MONSOON IS EXPECTED TO AFFECT THE FORECAST AREAS LATER.

MARINE FORECAST FOR 24 HOURS FROM 100100 UTC:

HONG KONG= NE 4, OCNL 5, N UP TO 6 LATER. DOWN TO 4000 M IN MIST PATCHES. SEA UP TO 2 M, UP TO 3 M LATER. SWELL E UP TO 2 M. TEMP 20-12 C. =
KWANGTUNG= E TO NE 5-6, BEC NE 7. DOWN TO 4000 M IN MIST OR RAIN PATCHES AT FIRST. SEA 2-3 M, BEC 4 M. SWELL E 2 M. =
TAIWAN STRAIT= NE 6, BEC 8. DOWN TO 4000 M IN MIST OR RAIN PATCHES AT FIRST. SEA 3 M, BEC 6 M. SWELL NE 2 M. =
BASHI= E TO NE 5-6, UP TO 8 LATER. RAIN PATCHES. SEA 2-3 M, UP TO 6 M LATER. SWELL E TO NE 2 M. =
PRATAS= NE 5-6, BEC 7. RAIN PATCHES. SEA 2-3 M, BEC 4 M. SWELL E TO NE 2 M. =
BALINTANG= E TO NE 5-6, UP TO 8 LATER. RAIN PATCHES. SEA 2-3 M, UP TO 6 M LATER. SWELL E TO NE 2 M. =
SCARBOROUGH= N TO NE 5, 7 LATER. FINE. SEA 2 M, 4 M LATER. SWELL NE 2 M. =
PARACEL= NE 5, 7 LATER. RAIN PATCHES. SEA 2 M, 4 M LATER. SWELL E TO NE 2 M. =
TONKIN= NE 4-5, BEC 6. DOWN TO 4000 M IN MIST OR RAIN PATCHES AT FIRST. SEA UP TO 2 M, BEC 3 M. =
DANANG= E TO NE 4-5, 6 LATER. DOWN TO 4000 M IN MIST OR RAIN PATCHES AT FIRST. SEA UP TO 2 M, 3 M LATER. SWELL E TO 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.


  • Map showing the 10 forecast areas
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    • 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 16:30 HKT 10/Feb/2018

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 4:30 p.m. on 10 February 2018

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

    Weather Situation:
    A cold front over the northern part of Guangdong is moving southwards gradually. It is expected to reach the south China coastal waters overnight.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    East force 4, becoming north force 5 to 6.
    Visibility relatively low in some areas.
    Moderate seas, becoming rough seas.

    Nan'ao:
    East to northeast force 6 to 7, north up to force 8 overnight.
    Rough seas, becoming very rough seas later.

    Shanwei:
    East to northeast force 5 to 6, becoming north force 7.
    Moderate to rough seas.

    South of Hong Kong and Shangchuan Dao:
    East force 5 to 6, becoming north force 7.
    Moderate to rough seas.

    Outlook for the next 48 hours
    North to northeasterly winds of force 6 to 7.

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

    Waglan Island Wind variable force 1
      Visibility 8 Kilometres

    Shantou Wind east-northeast force 2
      Visibility 19 Kilometres in rain

    Dongsha Wind north-northeast force 4
      Visibility 10 Kilometres

    Huangmaozhou Wind east force 3

    Macau Wind northeast force 2
      Visibility 8 Kilometres

    Xisha Wind north-northeast force 3
      Visibility 30 Kilometres

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

    Bulletin issued at 09:30 HKT 10/FEB/2018
    (Next update at 17:30 HKT 10/FEB/2018)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     NIL.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     PRESSURE IS RISING OVER THE NORTHERN PART OF
     SOUTHERN CHINA. A NORTHEAST MONSOON IS GRADUALLY
     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:  360/5-10
       OFFSHORE:  360/15-20                            15-20
   B.   2000 FT:  360/10-15, OCNL 20                   14
   C.   5000 FT:  220/10
                  BEC 340/15                           11
   D.  10000 FT:  270/25                               6
   E.  18000 FT:  260/55                               MS4
   F.  24000 FT:  260/60                               MS15
   G.  30000 FT:  250/75                               MS30
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      MAINLY CLOUDY WITH A FEW LIGHT RAIN PATCHES AT
      FIRST. LOCALISED MIST/HAZE.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 2000 FT  SCT 4000 FT.
   K. VISIBILITY    : 7 KM.  TEMPO 2500 M IN RAIN/MIST/HAZE.
   L. 0 DEG. C LEVEL: 16000 FT      10 DEG. C LEVEL(S) : 5600 FT
   M. TURBULENCE    : MOD OFFSHORE AND  NEAR HILLS
   N. SEA STATE     : 1.5-2.0 M     SEA TEMPERATURE    : 15 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE TO FRESH NORTHERLY WINDS. 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.

    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 10:30 HKT on 10 Feb 18

    VHHK SIGMET 1 VALID 100230/100630 VHHH- VHHK HONG KONG FIR SEV TURB OBS WI N2000 E11636 - N1742 E11448 - N2000 E11448 - N2000 E11636 FL300/400 MOV E 05KT 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 10/Feb/2018 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     17.1 C
Minimum Air Temperature                     13.7 C
Grass Minimum Temperature                   12.4 C
Relative Humidity                        69 - 82 Percent
Rainfall                                       0 mm 
Total rainfall since 1st January            62.2 mm
Against an average of                       41.5 mm

Other Stations                Min                  Max
King's Park                  13.2 C               17.6 C
Wong Chuk Hang               13.8 C               18.4 C
Ta Kwu Ling                  13.3 C               18.8 C
Lau Fau Shan                 13.2 C               17.8 C
Tai Po                       13.6 C               16.7 C
Sha Tin                      13.5 C               17.8 C
Tuen Mun                     13.4 C               17.8 C
Tseung Kwan O                12.9 C               16.4 C
Sai Kung                     13.5 C               17.2 C
Cheung Chau                  13.4 C               17.3 C
Chek Lap Kok                 14.3 C               19.2 C
Tsing Yi                     13.9 C               19.2 C
Shek Kong                    14.1 C               20.6 C
Tsuen Wan Ho Koon            12.7 C               18.1 C
Tsuen Wan Shing Mun Valley   13.5 C               20.3 C
Hong Kong Park               13.5 C               16.7 C
Shau Kei Wan                 12.8 C               16.7 C
Kowloon City                 13.1 C               18.9 C
Happy Valley                 13.8 C               17.6 C
Wong Tai Sin                 13.4 C               17.9 C
Stanley                      13.4 C               16.5 C
Kwun Tong                    12.8 C               16.5 C
Sham Shui Po                 13.8 C               19.0 C
Kai Tak Runway Park          13.9 C               16.6 C
Yuen Long Park               13.7 C               19.9 C
Tai Mei Tuk               13.0 C               18.4 C

Duration of sunshine (King's Park):              1.4 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 5.
Sea surface temperature (Waglan Island):        14.8 C 

Yesterday's (09 Feb 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                         0.14
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 09 Feb
     2003copy right image | Important notices | Privacy policy Last revision date: <10 Feb 2018> 

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