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Bulletin issued at 09:02 HKT 18/Feb/2019

At 9 a.m. at the Hong Kong Observatory the air temperature was 17 degrees Celsius and the relative humidity 94 per cent.
During the past hour the mean UV Index recorded at King's Park was 0.1. The intensity of UV radiation was low.

Please be reminded that:

The Strong Monsoon Signal has been issued.

The air temperatures at other places were:

King's Park 17 degrees;
Wong Chuk Hang 17 degrees;
Ta Kwu Ling 17 degrees;
Lau Fau Shan 19 degrees;
Tai Po 17 degrees;
Sha Tin 17 degrees;
Tuen Mun 18 degrees;
Tseung Kwan O 16 degrees;
Sai Kung 17 degrees;
Cheung Chau 17 degrees;
Chek Lap Kok 19 degrees;
Tsing Yi 17 degrees;
Shek Kong 18 degrees;
Tsuen Wan Ho Koon 16 degrees;
Tsuen Wan Shing Mun Valley 17 degrees;
Hong Kong Park 17 degrees;
Shau Kei Wan 17 degrees;
Kowloon City 16 degrees;
Happy Valley 17 degrees;
Wong Tai Sin 17 degrees;
Stanley 17 degrees;
Kwun Tong 16 degrees;
Sham Shui Po 17 degrees;
Kai Tak Runway Park 17 degrees;
Yuen Long Park 18 degrees;
Tai Mei Tuk 16 degrees.

Between 7:45 and 8:45 a.m., the rainfall recorded in various regions were:

Tsuen Wan 0 to 1 mm;
Wong Tai Sin 0 to 1 mm.

Between midnight and 9 a.m. the minimum temperature was 16.8 degrees Celsius at the Hong Kong Observatory.


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


Climatological Information for 18 Feb

Regional Weather in Hong Kong

Information on Tropical Cyclones

Hong Kong Climatology


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Bulletin updated at 08:45 HKT 18/Feb/2019

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

A strong easterly airstream is affecting the coast of Guangdong. Meanwhile, a trough of low pressure is bringing unsettled weather to inland Guangdong.

Weather forecast for today

Cloudy with a few showers. There will be more showers and isolated thunderstorms later. The maximum temperature will be about 20 degrees. Moderate to fresh east to southeasterly winds, strong offshore and on high ground at first.

Outlook : Still unsettled tomorrow morning. Sunny periods in the following couple of days and there will be coastal fog in the morning and at night.


(The above forecast period is valid up to 23:59 HKT today, 18/02/2019; 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 18/Feb/2019

N0 WARNING.

GENERAL SITUATION AT 172100 UTC:
TROUGH 20N 107E 23N 112E 24N 115E QSTNR.

MARINE FORECAST FOR 24 HOURS FROM 180100 UTC:

HONG KONG= E TO SE 5-6, 7 AT FIRST. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 2-3 M, 4 M AT FIRST. SWELL E TO NE 2 M. TEMP 17-20 C. =
KWANGTUNG= S TO SE 5-6. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 2-3 M. SWELL NE 3 M. =
TAIWAN STRAIT= NE 5-6, S 4-5 LATER. ISOL SHOWERS. SEA 2-3 M, UP TO 2 M LATER. SWELL NE 3-4 M. =
BASHI= S TO SE 5-6. ISOL SHOWERS. SEA 2-3 M. SWELL NE 2 M. =
PRATAS= S TO SE 5-6. ISOL SHOWERS. SEA 2-3 M. SWELL NE 2 M. =
BALINTANG= S TO SE 5-6. ISOL SHOWERS. SEA 2-3 M. SWELL NE 2 M. =
SCARBOROUGH= S 4-5. FINE. SEA UP TO 2 M. SWELL NE 2 M. =
PARACEL= S 4-5. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS IN N. SEA UP TO 2 M. SWELL NE 2 M. =
TONKIN= S 5-6, OCNL 7. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS AT FIRST. SEA UP TO 4 M. =
DANANG= S 5-6. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS AT FIRST. SEA 2-3 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 09:30 HKT 18/Feb/2019

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 9:30 a.m. on 18 February 2019

    Warnings:
    Strong winds in all areas.

    Weather Situation:
    An easterly airstream is affecting the coastal waters of Guangdong. Meanwhile, a trough of low pressure is bringing unsettled weather to the region.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    East to southeast force 5 to 6, force 7 at first.
    Isolated squally showers and thunderstorms. Visibility rather low in some areas.
    Moderate to rough seas.

    Nan'ao and Shanwei:
    East to southeast force 5 to 6.
    Isolated showers and thunderstorms later.
    Moderate to rough seas.

    South of Hong Kong and Shangchuan Dao:
    South to southeast force 5 to 6.
    Isolated squally showers and thunderstorms.
    Moderate to rough seas.

    Outlook for the next 48 hours
    South to southeasterly winds of force 4 to 5, force 6 at first. Isolated squally showers and thunderstorms at first, fog patches later.

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

    Waglan Island Wind east-northeast force 7
      Visibility 3300 Metres

    Shantou Wind east-northeast force 2
      Visibility 30 Kilometres

    Dongsha Wind east-northeast force 2
      Visibility 10 Kilometres

    Huangmaozhou Wind east-southeast force 7

    Macau Wind east force 3
      Visibility 7 Kilometres

    Xisha Wind southeast force 2
      Visibility 17 Kilometres

  • Explanation of Seas or Sea Waves
  • Explanation of Swells
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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 09:00 HKT 18/FEB/2019
    (Next update at 12:30 HKT 18/FEB/2019)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     GALE FORCE WINDS.  SEV TURB AND SEV GUSTS.
     ISOL CUNIM/TS AND ASSOCIATED HAZARDS.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     A STRONG EASTERLY AIRSTREAM IS AFFECTING THE
     COAST OF GUANGDONG.  MEANWHILE, A TROUGH OF LOW
     PRESSURE IS BRINGING UNSETTLED WEATHER TO INLAND
     GUANGDONG.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1000 TO 2000 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  100/15-20, OCNL 25 BEC 140/10
                  TEMPO VRB/15G25 IN TS
       OFFSHORE:  100/25-30 BEC 140/15-20              18-22
   B.   2000 FT:  130/30-35G45 BEC 170/20-25           16
   C.   5000 FT:  180/35                               13
   D.  10000 FT:  230/35                               5
   E.  18000 FT:  230/50                               MS8
   F.  24000 FT:  230/70                               MS19
   G.  30000 FT:  250/85                               MS31
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      2000 - 2800 FT.
   I. WEATHER       : 
      CLOUDY WITH A FEW SHOWERS.  THERE WILL BE MORE
      SHOWERS AND ISOLATED THUNDERSTORMS LATER.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1000 FT  SCT 2500 FT  BKN 8000 FT.  TEMPO
      FEW CB 600 FT  SCT 1200 FT  BKN 4000 FT.
   K. VISIBILITY    : 9 KM.  TEMPO 4000 M IN SHOWERS.
                      TEMPO 2000 M IN TS.
   L. 0 DEG. C LEVEL: 13500 FT      10 DEG. C LEVEL(S) : 6400 FT
   M. TURBULENCE    : MOD TO SEV.
   N. SEA STATE     : 2.5-4.0 M     SEA TEMPERATURE    : 20 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE SOUTH TO SOUTHEASTERLY WINDS.  CLOUDY
     WITH SHOWERS AND ISOLATED THUNDERSTORMS.=

    ===================================================================
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 18/Feb/2019 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     20.2 C
Minimum Air Temperature                     18.0 C
Grass Minimum Temperature                   18.2 C
Relative Humidity                        77 - 90 Percent
Rainfall                                     0.1 mm 
Total rainfall since 1st January             6.8 mm
Against an average of                       57.6 mm

Other Stations                Min                  Max
King's Park                  17.5 C               19.8 C
Wong Chuk Hang               17.7 C               20.2 C
Ta Kwu Ling                  17.8 C               22.4 C
Lau Fau Shan                 17.8 C               24.7 C
Tai Po                       17.7 C               19.7 C
Sha Tin                      17.6 C               19.9 C
Tuen Mun                     19.0 C               21.7 C
Tseung Kwan O                17.0 C               18.9 C
Sai Kung                     17.8 C               19.2 C
Cheung Chau                  18.0 C               20.6 C
Chek Lap Kok                 19.1 C               22.2 C
Tsing Yi                     18.6 C               21.3 C
Shek Kong                    18.2 C               23.3 C
Tsuen Wan Ho Koon            17.2 C               21.2 C
Tsuen Wan Shing Mun Valley   17.8 C               20.9 C
Hong Kong Park               17.9 C               20.2 C
Shau Kei Wan                 17.0 C               18.6 C
Kowloon City                 17.6 C               20.2 C
Happy Valley                 18.1 C               20.0 C
Wong Tai Sin                 17.7 C               20.9 C
Stanley                      17.3 C               18.8 C
Kwun Tong                    16.9 C               18.8 C
Sham Shui Po                 18.6 C               21.3 C
Kai Tak Runway Park          17.7 C               19.4 C
Yuen Long Park               18.7 C               22.9 C
Tai Mei Tuk               17.2 C               20.8 C

Duration of sunshine (King's Park):              0.8 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 5.
 

Yesterday's (17 Feb 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                         0.12
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 17 Feb
     2003copy right image | Important notices | Privacy policy Last revision date: <18 Feb 2019> 

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