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Bulletin issued at 23:02 HKT 28/Mar/2017

At 11 p.m. at the Hong Kong Observatory the air temperature was 20 degrees Celsius and the relative humidity 85 per cent.

The air temperatures at other places were:

King's Park 20 degrees;
Wong Chuk Hang 20 degrees;
Lau Fau Shan 20 degrees;
Tai Po 20 degrees;
Sha Tin 20 degrees;
Tuen Mun 21 degrees;
Tseung Kwan O 20 degrees;
Sai Kung 20 degrees;
Cheung Chau 20 degrees;
Chek Lap Kok 21 degrees;
Tsing Yi 21 degrees;
Tsuen Wan Ho Koon 20 degrees;
Tsuen Wan Shing Mun Valley 21 degrees;
Hong Kong Park 20 degrees;
Shau Kei Wan 19 degrees;
Kowloon City 20 degrees;
Happy Valley 20 degrees;
Stanley 20 degrees;
Kwun Tong 20 degrees;
Yuen Long Park 21 degrees;
Tai Mei Tuk 20 degrees.


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


Climatological Information for 28 Mar

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

Current Weather | Regional Temperature Forecast in HK |  9-day Weather Forecast
UV Index Forecast |  Weather Information for South China Coastal Waters

Bulletin updated at 23:15 HKT 28/Mar/2017

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

An easterly airstream affected the coast of Guangdong today. Locally, it was mainly cloudy. The weather was warm with sunny periods during the day. A humid easterly airstream is expected to affect the coast of Guangdong in the next couple of days. A cold front will cross southern China on Friday. There will be squally thunderstorms and the weather will become cool appreciably over the region.

Weather forecast for Hong Kong (Wednesday, 29 Mar 2017)

Mainly cloudy. Misty with one or two light rain patches in the morning and at night. Warm with sunny periods during the day. Temperatures will range between 19 and 25 degrees. Moderate easterly winds, occasionally fresh offshore at first.

Outlook : Coastal fog in the following couple of days. Squally thunderstorms later during the day on Friday and it will become cool appreciably. Becoming fine and dry over the weekend.


(The above forecast period is valid up to 23:59 HKT tomorrow, 29/03/2017; 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 21:00 HKT 28/Mar/2017

N0 WARNING.

GENERAL SITUATION AT 280900 UTC:
AN EASTERLY AIRSTREAM IS AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 281300 UTC:

HONG KONG= E 4-5, OCNL 6. DOWN TO 4000 M IN MIST OR LGT RAIN PATCHES. SEA UP TO 3 M. SWELL E TO NE 2 M. TEMP 19-25 C. =
KWANGTUNG= E 4-5, OCNL 6 IN E. DOWN TO 4000 M IN MIST OR LGT RAIN PATCHES. SEA UP TO 3 M. SWELL NE 2-3 M. =
TAIWAN STRAIT= NE 4-5, OCNL 6. RAIN PATCHES. SEA UP TO 3 M. SWELL NE 2 M. =
BASHI= E 5-6. RAIN PATCHES. SEA 2-3 M. SWELL NE 2-3 M. =
PRATAS= E 4-5, OCNL 6. RAIN PATCHES. SEA UP TO 3 M. SWELL NE 2-3 M. =
BALINTANG= E 5-6. RAIN PATCHES. SEA 2-3 M. SWELL NE 2-3 M. =
SCARBOROUGH= E TO NE 5-6. RAIN PATCHES. SEA 2-3 M. SWELL NE 2-3 M. =
PARACEL= E 4-5, BEC SE 4-5. RAIN PATCHES. SEA UP TO 2 M. SWELL NE 2 M. =
TONKIN= E 4-5. DOWN TO 4000 M IN MIST OR LGT RAIN PATCHES. SEA UP TO 2 M. =
DANANG= E 4-5, BEC SE 4-5. CLD. SEA UP TO 2 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 23:30 HKT 28/Mar/2017

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 11:30 p.m. on 28 March 2017

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

    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.
    Mist patches, a few light rain patches.
    Moderate to rough seas.

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

    Shanwei and South of Hong Kong:
    East force 4 to 5, occasionally force 6.
    Moderate to rough seas.

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

    Outlook for the next 48 hours
    East to southeasterly winds of force 4 to 5. Fog patches.

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

    Waglan Island Wind east-northeast force 4

    Shantou Wind east force 1
      Visibility 16 Kilometres

    Dongsha Wind east force 4
      Visibility 10 Kilometres

    Huangmaozhou Wind east-northeast force 5

    Macau Wind east force 2
      Visibility 6 Kilometres

    Xisha Wind east-northeast force 2
      Visibility 14 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 17:30 HKT 28/MAR/2017
    (Next update at 01:30 HKT 29/MAR/2017)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     STRONG WINDS AND 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 1800 TO 0400 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  090/10-15
       OFFSHORE:  070/20-25                            25-20
   B.   2000 FT:  130/20-25                            16
   C.   5000 FT:  170/15                               15
   D.  10000 FT:  250/20                               5
   E.  18000 FT:  250/40                               MS9
   F.  24000 FT:  250/60                               MS20
   G.  30000 FT:  250/80                               MS33
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      1600-1900 FT
   I. WEATHER       : 
      MAINLY CLOUDY WITH ONE OR TWO LIGHT RAIN
      PATCHES. LOCALIZED MIST.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 2500 FT  SCT 3500 FT.
   K. VISIBILITY    : 8 KM. TEMPO 4000 M IN RAIN/MIST.
   L. 0 DEG. C LEVEL: 13500 FT      10 DEG. C LEVEL(S) : 7200 FT
   M. TURBULENCE    : MOD TO SEV OFFSHORE AND NEAR HILLS
   N. SEA STATE     : 2.0-3.0 M     SEA TEMPERATURE    : 18 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE TO FRESH EASTERLY WINDS. MAINLY CLOUDY
     WITH ONE OR TWO LIGHT RAIN PATCHES AT FIRST.
     SUNNY PERIODS DURING THE DAY. 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 17:25 HKT on 25 Mar 17

    VHHK SIGMET 1 VALID 250925/251325 VHHH- VHHK HONG KONG FIR SEV ICE FCST N OF LINE N2100 E11730 - N1954 E11130 FL200/250 MOV E 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 28/Mar/2017 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     21.5 C
Minimum Air Temperature                     16.3 C
Grass Minimum Temperature                   14.6 C
Relative Humidity                        39 - 71 Percent
Rainfall                                     0.0 mm 
Total rainfall since 1st January            53.5 mm
Against an average of                      147.0 mm

Other Stations                Min                  Max
King's Park                  15.6 C               22.3 C
Wong Chuk Hang               16.4 C               22.0 C
Ta Kwu Ling                  10.9 C               24.3 C
Lau Fau Shan                 13.5 C               25.8 C
Tai Po                       13.5 C               21.7 C
Sha Tin                      14.6 C               22.2 C
Tuen Mun                     15.0 C               24.2 C
Tseung Kwan O                14.4 C               22.1 C
Sai Kung                     15.4 C               21.6 C
Cheung Chau                  15.4 C               22.1 C
Chek Lap Kok                 15.3 C               24.5 C
Tsing Yi                     15.8 C               22.8 C
Shek Kong                    12.4 C               23.9 C
Tsuen Wan Ho Koon            14.0 C               22.1 C
Tsuen Wan Shing Mun Valley   15.5 C               23.2 C
Hong Kong Park               15.4 C               21.5 C
Shau Kei Wan                 15.5 C               21.0 C
Kowloon City                 15.4 C               22.5 C
Happy Valley                 16.4 C               22.5 C
Wong Tai Sin                 16.5 C               22.3 C
Stanley                      16.4 C               21.9 C
Kwun Tong                    15.9 C               20.8 C
Sham Shui Po                 15.8 C               23.2 C
Kai Tak Runway Park          16.9 C               21.1 C
Yuen Long Park               13.3 C               24.3 C
Tai Mei Tuk               14.4 C               23.6 C

Duration of sunshine (King's Park):              4.3 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 8.
Sea surface temperature (Waglan Island):        20.3 C 

Yesterday's (27 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 27 Mar
     2003copy right image | Important notices | Privacy policy Last revision date: <28 Mar 2017> 

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