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Bulletin issued at 15:02 HKT 04/Mar/2017

At 3 p.m. at the Hong Kong Observatory the air temperature was 22 degrees Celsius and the relative humidity 66 per cent.
During the past hour the mean UV Index recorded at King's Park was 5. The intensity of UV radiation was moderate.

The air temperatures at other places were:

King's Park 21 degrees;
Wong Chuk Hang 22 degrees;
Ta Kwu Ling 23 degrees;
Lau Fau Shan 25 degrees;
Tai Po 20 degrees;
Sha Tin 23 degrees;
Tuen Mun 22 degrees;
Tseung Kwan O 21 degrees;
Sai Kung 20 degrees;
Cheung Chau 21 degrees;
Chek Lap Kok 25 degrees;
Tsing Yi 23 degrees;
Shek Kong 26 degrees;
Tsuen Wan Ho Koon 24 degrees;
Tsuen Wan Shing Mun Valley 25 degrees;
Hong Kong Park 21 degrees;
Shau Kei Wan 19 degrees;
Kowloon City 22 degrees;
Happy Valley 23 degrees;
Wong Tai Sin 22 degrees;
Stanley 21 degrees;
Kwun Tong 21 degrees;
Sham Shui Po 23 degrees;
Kai Tak Runway Park 21 degrees;
Yuen Long Park 25 degrees;
Tai Mei Tuk 22 degrees.


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


Climatological Information for 4 Mar

Regional Weather in Hong Kong

Information on Tropical Cyclones

Hong Kong Climatology


Local Weather Forecast
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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 14:45 HKT 04/Mar/2017

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

An easterly airstream is affecting the coast of Guangdong.

Weather forecast for this afternoon and tonight

Mainly cloudy. Sunny periods in the afternoon. Moderate easterly winds.

Outlook : Sunny periods in the next couple of days. It will become humid with coastal fog.


(The above forecast period is valid up to 23:59 HKT today, 04/03/2017; 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
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Marine Forecast

Weather Information for the Marine Community

Bulletin issued at 09:00 HKT 04/Mar/2017

N0 WARNING.

GENERAL SITUATION AT 032100 UTC:
AN EASTERLY AIRSTREAM IS AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 040100 UTC:

HONG KONG= E 4-5, OCNL 6 AT FIRST. CLD. SEA 2 M. TEMP 22-18 C. =
KWANGTUNG= E 4-5, 6 IN E AT FIRST. CLD. SEA 2-3 M. =
TAIWAN STRAIT= NE 5-6. CLD. SEA 3-4 M. SWELL NE 2 M. =
BASHI= E 6-7. RAIN PATCHES. SEA 3-4 M. SWELL E 2 M. =
PRATAS= E 5-6. CLD. SEA 2-3 M. SWELL E 2 M. =
BALINTANG= E TO 6-7. RAIN PATCHES. SEA 3-4 M. SWELL E 2 M. =
SCARBOROUGH= NE 5-6, OCNL 7. RAIN PATCHES. SEA UP TO 3M. SWELL NE UP TO 2 M. =
PARACEL= E TO NE 4-5, OCNL 6 AT FIRST. CLD. SEA UP TO 3 M. SWELL NE UP TO 2 M. =
TONKIN= SE 4-5,OCNL 6 AT FIRST. 4000 M IN MIST. SEA 2 M. =
DANANG= E TO SE 4-5,OCNL 6 AT FIRST. 4000 M IN MIST. SEA 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 13:25 HKT 04/Mar/2017

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 1:25 p.m. on 04 March 2017

    Warnings:
    Strong winds in Hong Kong adjacent waters and Nan'ao.

    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 4 to 5, occasionally force 6 at first.
    Visibility relatively low in some areas later.
    Moderate to rough seas.

    Nan'ao:
    East to northeast force 5 to 6.
    Moderate to rough seas.

    Shanwei, South of Hong Kong and Shangchuan Dao:
    East force 4 to 5, becoming southeast force 4 to 5.
    Moderate seas.

    Outlook for the next 48 hours
    Southeasterly winds of force 4 to 5, northeasterly winds of force 4 and 5 later. Fog patches.

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

    Waglan Island Wind east force 4
      Visibility 8 Kilometres

    Shantou Wind east-southeast force 2
      Visibility 15 Kilometres

    Dongsha Wind east force 2
      Visibility 10 Kilometres

    Huangmaozhou Wind east force 5

    Macau Wind southeast force 2
      Visibility 9 Kilometres

    Xisha Wind northeast force 2
      Visibility 10 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 04/MAR/2017
    (Next update at 17:30 HKT 04/MAR/2017)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     NIL
II.  SYNOPSIS OF THE WEATHER SITUATION :
     THE NORTHEAST MONSOON IS AFFECTING THE SOUTH
     CHINA COASTAL WATERS.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1000 TO 2000 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  080/10
       OFFSHORE:  070/15-20, OCNL 25 AT FIRST          19-22
   B.   2000 FT:  140/10-15                            14
   C.   5000 FT:  200/10                               13
   D.  10000 FT:  280/20                               5
   E.  18000 FT:  270/50                               MS6
   F.  24000 FT:  260/65                               MS18
   G.  30000 FT:  260/75                               MS30
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      1100 - 2100 FT
   I. WEATHER       : 
      MAINLY CLOUDY. SUNNY PERIODS IN THE AFTERNOON.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 3500 FT SCT 8000 FT
   K. VISIBILITY    : 8 KM
   L. 0 DEG. C LEVEL: 12000, 13500 FT      10 DEG. C LEVEL(S) : 6000 FT
   M. TURBULENCE    : MOD
   N. SEA STATE     : 1.5-2.5 M     SEA TEMPERATURE    : 18 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE EASTERLY WINDS. MAINLY CLOUDY.
     LOCALIZED MIST.=

    ===================================================================
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 05:12 HKT on 22 Feb 17

    VHHK SIGMET 6 VALID 211715/212115 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N2345 E11730 - N2100 E11730 - N2100 E11330 - N2200 E11300 - N2245 E11500 - N2345 E11730 TOP FL400 MOV NE 10KT NC= VHHK SIGMET 7 VALID 212115/220115 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N2345 E11730 - N2230 E11730 - N2130 E11430 - N2245 E11430 - N2345 E11730 TOP FL400 MOV NE 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 04/Mar/2017 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     20.1 C
Minimum Air Temperature                     15.7 C
Grass Minimum Temperature                   13.9 C
Relative Humidity                        49 - 76 Percent
Rainfall                                       0 mm 
Total rainfall since 1st January            27.7 mm
Against an average of                       91.0 mm

Other Stations                Min                  Max
King's Park                  14.6 C               19.6 C
Wong Chuk Hang               14.6 C               20.0 C
Ta Kwu Ling                  12.1 C               22.0 C
Lau Fau Shan                 13.0 C               23.2 C
Tai Po                       13.3 C               19.6 C
Sha Tin                      13.1 C               20.5 C
Tuen Mun                     15.1 C               20.3 C
Tseung Kwan O                13.9 C               19.3 C
Sai Kung                     13.9 C               18.2 C
Cheung Chau                  14.7 C               19.4 C
Chek Lap Kok                 15.9 C               22.6 C
Tsing Yi                     15.3 C               21.4 C
Shek Kong                    14.8 C               22.8 C
Tsuen Wan Ho Koon            12.7 C               21.8 C
Tsuen Wan Shing Mun Valley   14.3 C               21.7 C
Hong Kong Park               15.3 C               19.7 C
Shau Kei Wan                 14.8 C               18.4 C
Kowloon City                 14.3 C               21.0 C
Happy Valley                 14.9 C               20.5 C
Wong Tai Sin                 14.6 C               20.8 C
Stanley                      15.4 C               18.6 C
Kwun Tong                    14.8 C               19.3 C
Sham Shui Po                 14.8 C               21.5 C
Kai Tak Runway Park          15.7 C               18.6 C
Yuen Long Park               12.5 C               23.5 C
Tai Mei Tuk               13.6 C               20.4 C

Duration of sunshine (King's Park):              7.6 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 6.
Sea surface temperature (Waglan Island):        19.4 C 

Yesterday's (03 Mar 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 03 Mar
     2003copy right image | Important notices | Privacy policy Last revision date: <04 Mar 2017> 

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