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Bulletin issued at 10:02 HKT 07/Feb/2017

At 10 a.m. at the Hong Kong Observatory the air temperature was 16 degrees Celsius and the relative humidity 74 per cent.
During the past hour the mean UV Index recorded at King's Park was 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 16 degrees;
Wong Chuk Hang 17 degrees;
Ta Kwu Ling 17 degrees;
Lau Fau Shan 18 degrees;
Tai Po 17 degrees;
Sha Tin 16 degrees;
Tuen Mun 18 degrees;
Tseung Kwan O 16 degrees;
Sai Kung 16 degrees;
Cheung Chau 16 degrees;
Chek Lap Kok 17 degrees;
Tsing Yi 17 degrees;
Shek Kong 17 degrees;
Tsuen Wan Ho Koon 16 degrees;
Tsuen Wan Shing Mun Valley 16 degrees;
Hong Kong Park 16 degrees;
Shau Kei Wan 15 degrees;
Kowloon City 16 degrees;
Happy Valley 17 degrees;
Wong Tai Sin 16 degrees;
Stanley 16 degrees;
Kwun Tong 16 degrees;
Sham Shui Po 17 degrees;
Kai Tak Runway Park 16 degrees;
Yuen Long Park 19 degrees;
Tai Mei Tuk 17 degrees.


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


Climatological Information for 7 Feb

Regional Weather in Hong Kong

Information on Tropical Cyclones

Hong Kong Climatology


Local Weather Forecast
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Local Weather Forecast

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Bulletin updated at 09:45 HKT 07/Feb/2017

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

A strong easterly airstream is affecting the coast of Guangdong and its adjacent waters.

Weather forecast for today

Mainly cloudy. Cool in the morning. Fresh easterly winds, strong offshore and on high ground at first.

Outlook : Temperatures will fall appreciably on Thursday. Cold mornings in the following couple of days. Temperature difference between day and night will be relatively large.


(The above forecast period is valid up to 23:59 HKT today, 07/02/2017; Regular update at : around 45 minutes past each hour, 16:15 HKT and 23:15 HKT)

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MARINE FORECAST
Traditional Chinese Simplified Chinese

Marine Forecast

Weather Information for the Marine Community

Bulletin issued at 09:00 HKT 07/Feb/2017

GALE WARNING AREAS: HONG KONG, KWANGTUNG, TAIWAN STRAIT, BASHI, PRATAS AND BALINTANG.

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

MARINE FORECAST FOR 24 HOURS FROM 070100 UTC:

HONG KONG= E 6-7, OCNL 8 AT FIRST. LGT RAIN PATCHES. SEA 3-5 M. SWELL E TO NE 2 M. TEMP 19-17 C. =
KWANGTUNG= E TO NE 6-7, OCNL 8 AT FIRST. LGT RAIN PATCHES. SEA 3-5 M. SWELL NE 2-3 M. =
TAIWAN STRAIT= NE 6-7, UP TO 8 AT FIRST. CLD. SEA 3-4 M, UP TO 6 M AT FIRST. SWELL NE 2-3 M. =
BASHI= E TO NE 6-7, UP TO 8 AT FIRST. LGT RAIN PATCHES. SEA 3-4 M, UP TO 6 M AT FIRST. SWELL NE 2-3 M. =
PRATAS= E TO NE 6-7, OCNL 8 AT FIRST. LGT RAIN PATCHES. SEA 3-5 M. SWELL E TO NE 2-3 M. =
BALINTANG= E TO NE 6-7, UP TO 8 AT FIRST. LGT RAIN PATCHES. SEA 3-4 M, UP TO 6 M AT FIRST. SWELL E TO NE 2-3 M. =
SCARBOROUGH= NE 6-7. LGT RAIN PATCHES. SEA 3-4 M. SWELL NE 2 M. =
PARACEL= E TO NE 5-6, OCNL 7 AT FIRST. LGT RAIN PATCHES. SEA 2-3 M. SWELL NE 2 M. =
TONKIN= E 4-5. CLD. SEA UP TO 2 M. =
DANANG= E TO NE 5-6. CLD. SEA 2-3 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
  • 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 07/Feb/2017

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 9:30 a.m. on 07 February 2017

    Warnings:
    Gale force winds in Hong Kong adjacent waters, Nan'ao, Shanwei and south of Hong Kong. Strong winds in 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 6 to 7, occasionally force 8 at first.
    Rough to very rough seas.

    Nan'ao, Shanwei and South of Hong Kong:
    East to northeast force 6 to 7, occasionally force 8 at first.
    Rough to very rough seas.

    Shangchuan Dao:
    East force 6 to 7.
    Rough seas.

    Outlook for the next 48 hours
    East to northeasterly winds of force 5 to 6, becoming northerly winds of force 6 to 7 later.

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

    Waglan Island Wind east-northeast force 7
      Visibility 5000 Metres

    Shantou Wind east force 2
      Visibility 13 Kilometres

    Dongsha Wind east-northeast force 4
      Visibility 10 Kilometres

    Huangmaozhou Wind east-northeast force 7

    Macau Wind east force 3
      Visibility 7 Kilometres

    Xisha Wind east-northeast force 3
      Visibility 23 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 09:30 HKT 07/FEB/2017
    (Next update at 17:30 HKT 07/FEB/2017)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     GALE FORCE WINDS. SEV TURB.
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:  090/15-20, OCNL 25
       OFFSHORE:  090/25-30, OCNL 35                   17-20
   B.   2000 FT:  100/25-30, OCNL 35                   10
   C.   5000 FT:  160/25                               12
   D.  10000 FT:  200/10                               2
   E.  18000 FT:  320/30                               MS2
   F.  24000 FT:  320/50                               MS16
   G.  30000 FT:  260/60                               MS23
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      2600-3400 FT.
   I. WEATHER       : 
      MAINLY CLOUDY WITH A FEW RAIN PATCHES. SUNNY INTERVALS
      DURING THE DAY.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 2500 FT  SCT 4000 FT.
   K. VISIBILITY    : 7 KM. TEMPO 4000 M IN RAIN.
   L. 0 DEG. C LEVEL: 15500 FT      
      10 DEG. C LEVEL(S) : 2200, 2800, 6800 FT
   M. TURBULENCE    : MOD TO SEV.
   N. SEA STATE     : 2.5-3.5 M     SEA TEMPERATURE    : 18 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE TO FRESH EASTERLY WINDS, STRONG OFFSHORE.
     MAINLY CLOUDY WITH A FEW RAIN PATCHES.=

    ===================================================================
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 07/Feb/2017 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     19.7 C
Minimum Air Temperature                     16.9 C
Grass Minimum Temperature                   16.4 C
Relative Humidity                        69 - 90 Percent
Rainfall                                      Trace 
Total rainfall since 1st January            12.7 mm
Against an average of                       32.5 mm

Other Stations                Min                  Max
King's Park                  16.1 C               20.7 C
Wong Chuk Hang               16.5 C               21.2 C
Ta Kwu Ling                  15.3 C               22.5 C
Lau Fau Shan                 15.9 C               25.0 C
Tai Po                       17.1 C               21.2 C
Sha Tin                      16.9 C               21.1 C
Tuen Mun                     16.5 C               22.9 C
Tseung Kwan O                16.3 C               19.6 C
Sai Kung                     16.5 C               19.5 C
Cheung Chau                  16.3 C               20.2 C
Chek Lap Kok                 17.1 C               23.9 C
Tsing Yi                     16.1 C               22.5 C
Shek Kong                    16.7 C               23.3 C
Tsuen Wan Ho Koon            15.0 C               22.5 C
Tsuen Wan Shing Mun Valley   16.2 C               23.0 C
Hong Kong Park               16.3 C               20.1 C
Shau Kei Wan                 16.2 C               18.7 C
Kowloon City                 16.2 C               22.1 C
Wong Tai Sin                 16.6 C               21.6 C
Stanley                      16.5 C               18.8 C
Kwun Tong                    16.3 C               19.9 C
Sham Shui Po                 16.9 C               23.2 C
Kai Tak Runway Park          17.1 C               19.3 C
Yuen Long Park               15.5 C               24.0 C
Tai Mei Tuk               16.6 C               21.3 C

Duration of sunshine (King's Park):              5.6 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):        18.3 C 

Yesterday's (06 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                         0.14
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 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 06 Feb
     2003copy right image | Important notices | Privacy policy Last revision date: <07 Feb 2017> 

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