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Bulletin issued at 07:02 HKT 18/Feb/2017

At 7 a.m. at the Hong Kong Observatory the air temperature was 18 degrees Celsius and the relative humidity 81 per cent.

Please be reminded that:

The Fire Danger Warning is Yellow and the fire risk is high.

The air temperatures at other places were:

King's Park 17 degrees;
Wong Chuk Hang 14 degrees;
Ta Kwu Ling 11 degrees;
Lau Fau Shan 15 degrees;
Tai Po 15 degrees;
Sha Tin 13 degrees;
Tuen Mun 16 degrees;
Tseung Kwan O 15 degrees;
Sai Kung 15 degrees;
Cheung Chau 17 degrees;
Chek Lap Kok 17 degrees;
Tsing Yi 16 degrees;
Shek Kong 13 degrees;
Tsuen Wan Ho Koon 15 degrees;
Tsuen Wan Shing Mun Valley 14 degrees;
Hong Kong Park 17 degrees;
Shau Kei Wan 17 degrees;
Kowloon City 17 degrees;
Happy Valley 15 degrees;
Wong Tai Sin 15 degrees;
Stanley 17 degrees;
Kwun Tong 17 degrees;
Sham Shui Po 17 degrees;
Kai Tak Runway Park 18 degrees;
Yuen Long Park 14 degrees;
Tai Mei Tuk 16 degrees.


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


Local Weather Forecast
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Local Weather Forecast

Automatic Regional Weather Forecast in Hong Kong & Pearl River Delta Region

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UV Index Forecast |  Weather Information for South China Coastal Waters

Bulletin updated at 06:45 HKT 18/Feb/2017

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

The weather is generally fine over Guangdong. Besides, pressure is rising over southeastern China. An easterly airstream is expected to reach the coast of Guangdong later today.

Weather forecast for today

Fine. Dry during the day. The maximum temperature will be around 24 degrees. Light winds, becoming moderate easterlies.

Outlook : Cloudier tomorrow. A few rain patches early next week.


(The above forecast period is valid up to 23:59 HKT today, 18/02/2017; Regular update at : around 45 minutes past each hour, 16:15 HKT and 23:15 HKT)

Information on Tropical Cyclones

Marine Weather Information and Forecast

Weather Information for Aviation

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MARINE FORECAST
Traditional Chinese Simplified Chinese

Marine Forecast

Weather Information for the Marine Community

Bulletin issued at 21:00 HKT 17/Feb/2017

N0 WARNING.

GENERAL SITUATION AT 170900 UTC:
AN EASTERLY AIRSTREAM IS GENERALLY AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 171300 UTC:

HONG KONG= E 3-4, 5-6 LATER. DOWN TO 4000 M IN MIST PATCHES AT FIRST. SEA 2-3 M LATER. TEMP 18-24 C. =
KWANGTUNG= E TO NE 4-5, 6 IN E LATER. DOWN TO 4000 M IN MIST PATCHES AT FIRST. SEA UP TO 3 M. =
TAIWAN STRAIT= NE 4-5, BEC 6-7. DOWN TO 4000 M IN MIST PATCHES AT FIRST. SEA 2 M, BEC 3-4 M. =
BASHI= E 5-6, OCNL 7. CLD. SEA UP TO 4 M. SWELL NE UP TO 2 M. =
PRATAS= E TO NE 5-6. FINE. SEA 2-3 M. SWELL NE UP TO 2 M. =
BALINTANG= E 5-6, OCNL 7. RAIN PATCHES. SEA UP TO 4 M. SWELL NE UP TO 2 M. =
SCARBOROUGH= NE 5-6, UP TO 7 LATER. FINE. SEA 2-3 M, UP TO 4 M LATER. SWELL NE UP TO 2 M. =
PARACEL= E TO NE 5-6. RAIN PATCHES LATER. SEA 2-3 M. SWELL NE UP TO 2 M. =
TONKIN= E TO NE 4. DOWN TO 4000 M IN MIST OR RAIN PATCHES AT FIRST. =
DANANG= E TO NE 4-5. RAIN PATCHES. SEA 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

    Current Weather | Local Weather Forecast | Regional Temperature Forecast in HK
    9-day Weather Forecast | UV Index Forecast | Weather Information for Fishermen

    Bulletin issued at 05:30 HKT 18/Feb/2017

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 5:30 a.m. on 18 February 2017

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

    Weather Situation:
    Pressure is rising over southeastern China. An easterly airstream is expected to reach the coastal waters of Guangdong later today.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    East force 3 to 4, becoming force 5 to 6 later.
    Visibility relatively low in some areas in the morning.
    Slight to moderate seas, becoming rough later.

    Nan'ao, Shanwei and South of Hong Kong:
    East to northeast force 4 to 5, becoming force 6.
    Moderate seas, becoming rough.

    Shangchuan Dao:
    East to northeast force 4 to 5.
    Moderate seas.

    Outlook for the next 48 hours
    East to northeasterly winds of force 5 to 6.

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

    Waglan Island Wind northeast force 3
      Visibility 27 Kilometres

    Shantou Wind east force 1
      Visibility 2200 Metres in mist

    Dongsha Wind east-northeast force 3
      Visibility 10 Kilometres

    Huangmaozhou Wind northeast force 3

    Macau Wind east-southeast force 1
      Visibility 35 Kilometres

    Xisha Wind northeast force 2
      Visibility 27 Kilometres

  • Explanation of Seas or Sea Waves
  • Explanation of Swells
  • Descriptive Terms of Wind Speeds
  • Visibility Readings in Hong Kong Waters
  • Map showing forecast areas
  • Tidal Information

    • WEATHER FORECAST FOR LOCAL AVIATION
    Traditional Chinese Simplified Chinese

    Weather Forecast for Local Aviation

    Bulletin issued at 01:30 HKT 18/FEB/2017
    (Next update at 9:00-9:30 HKT 18/FEB/2017)
    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 0200 TO 1200 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  060/5-10                             18-25
   B.   2000 FT:  060/10                               20
   C.   5000 FT:  060/10                               12
   D.  10000 FT:  260/25                               10
   E.  18000 FT:  260/40                               MS5
   F.  24000 FT:  240/60                               MS19
   G.  30000 FT:  240/80                               MS28
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      200-400 FT, 1400-1900 FT.
   I. WEATHER       : 
      MAINLY FINE. LOCALIZED MIST / HAZE.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 4000 FT.
   K. VISIBILITY    : 9 KM. TEMPO 4000 M IN MIST / HAZE.
   L. 0 DEG. C LEVEL : 15000 FT      
      10 DEG. C LEVEL(S) : 6000, 9400, 9800 FT
   M. TURBULENCE    : NIL.
   N. SEA STATE     : 0.5-1.0 M     SEA TEMPERATURE    : 18 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE EASTERLY WINDS, OCCASIONALLY FRESH OFFSHORE LATER.
     MAINLY FINE.=

    ===================================================================
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 10:58 HKT on 06 Feb 17

    VHHK SIGMET 1 VALID 060300/060700 VHHH- VHHK HONG KONG FIR SEV TURB FCST S OF N2030 FL220/390 MOV E 10KT WKN=

    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/2017 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     25.4 C
Minimum Air Temperature                     17.1 C
Grass Minimum Temperature                   15.3 C
Relative Humidity                        56 - 93 Percent
Rainfall                                       0 mm 
Total rainfall since 1st January            12.7 mm
Against an average of                       57.6 mm

Other Stations                Min                  Max
King's Park                  15.9 C               25.2 C
Wong Chuk Hang               13.9 C               23.6 C
Ta Kwu Ling                  11.4 C               28.1 C
Lau Fau Shan                 14.0 C               23.8 C
Sha Tin                      12.7 C               26.7 C
Tuen Mun                     15.7 C               26.9 C
Tseung Kwan O                14.3 C               26.2 C
Sai Kung                     14.6 C               21.5 C
Cheung Chau                  15.9 C               23.0 C
Chek Lap Kok                 16.1 C               25.1 C
Tsing Yi                     14.8 C               25.3 C
Shek Kong                    12.1 C               28.1 C
Tsuen Wan Ho Koon            14.3 C               24.7 C
Tsuen Wan Shing Mun Valley   13.4 C               26.7 C
Hong Kong Park               15.8 C               25.5 C
Shau Kei Wan                 16.4 C               23.1 C
Kowloon City                 16.0 C               26.0 C
Happy Valley                 14.2 C               27.0 C
Wong Tai Sin                 14.9 C               26.3 C
Stanley                      16.0 C               22.6 C
Kwun Tong                    16.2 C               26.0 C
Sham Shui Po                 15.9 C               25.5 C
Kai Tak Runway Park          16.2 C               22.8 C
Yuen Long Park               12.7 C               27.7 C
Tai Mei Tuk               14.8 C               26.0 C

Duration of sunshine (King's Park):              10.5 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.
Sea surface temperature (Waglan Island):        18.1 C 

Yesterday's (17 Feb 2017) 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 during
the period 1987-2016, the background ambient gamma radiation
levels may vary between 0.06 and 0.30 microsievert per hour.

    2. The extent of health effects to a person as a result of
exposure to radiation is expressed by a physical quantity
called equivalent dose, in unit of sievert.  Protective
action may be required if there is an increase in the
ambient gamma dose rate above background such that the total
additional dose is expected to exceed 5000 microsieverts in
a relatively short period of time. For example, a dose of
5000 microsieverts may be reached when the ambient gamma
dose rate is 1000 microsieverts per hour (several thousand
times above background) and lasts for 5 hours.

    3. The readings of ambient gamma radiation level from
instrument are expressed in unit of gray, which is
numerically equal to the gamma dose expressed in sievert.
    Climatological Information for 17 Feb
     2003copy right image | Important notices | Privacy policy Last revision date: <18 Feb 2017> 

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