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Bulletin issued at 22:02 HKT 27/Mar/2017

At 10 p.m. at the Hong Kong Observatory the air temperature was 20 degrees Celsius and the relative humidity 66 per cent.

The air temperatures at other places were:

King's Park 19 degrees;
Wong Chuk Hang 19 degrees;
Ta Kwu Ling 19 degrees;
Lau Fau Shan 19 degrees;
Tai Po 19 degrees;
Sha Tin 19 degrees;
Tuen Mun 19 degrees;
Tseung Kwan O 18 degrees;
Sai Kung 19 degrees;
Cheung Chau 19 degrees;
Chek Lap Kok 20 degrees;
Tsing Yi 20 degrees;
Shek Kong 20 degrees;
Tsuen Wan Ho Koon 18 degrees;
Tsuen Wan Shing Mun Valley 20 degrees;
Hong Kong Park 19 degrees;
Shau Kei Wan 19 degrees;
Kowloon City 19 degrees;
Happy Valley 20 degrees;
Wong Tai Sin 19 degrees;
Stanley 19 degrees;
Kwun Tong 19 degrees;
Sham Shui Po 20 degrees;
Kai Tak Runway Park 20 degrees;
Yuen Long Park 20 degrees;
Tai Mei Tuk 19 degrees.


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


Climatological Information for 27 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 21:45 HKT 27/Mar/2017

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

A dry northeast monsoon continues to affect southern China.

Weather forecast for tonight and tomorrow

Mainly cloudy. Sunny intervals tomorrow. Temperatures will range between 18 and 22 degrees. There will be one or two light rain patches tomorrow night. Moderate easterly winds.

Outlook : Misty with temperatures continuing to rise in the following couple of days. Becoming cool again with rain towards the weekend.


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

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MARINE FORECAST
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Marine Forecast

Weather Information for the Marine Community

Bulletin issued at 21:00 HKT 27/Mar/2017

GALE WARNING AREAS: BASHI, BALINTANG AND SCARBOROUGH.

GENERAL SITUATION AT 270900 UTC:
THE NORTHEAST MONSOON IS GENERALLY AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 271300 UTC:

HONG KONG= E 5-6. LGT RAIN PATCHES LATER TOMORROW. SEA 2-3 M. SWELL E TO NE 2 M. TEMP 18-22 C. =
KWANGTUNG= E TO NE 6-7. RAIN PATCHES. SEA 3-4 M. SWELL NE 2-3 M. =
TAIWAN STRAIT= NE 5-6, OCNL 7. FINE. SEA UP TO 4 M. SWELL NE 2 M. =
BASHI= E 7-8. RAIN PATCHES. SEA 4-6 M. SWELL NE 3 M. =
PRATAS= E TO NE 6-7. RAIN PATCHES. SEA 3-4 M. SWELL NE 2-3 M. =
BALINTANG= E 7-8. RAIN PATCHES. SEA 4-6 M. SWELL NE 3 M. =
SCARBOROUGH= E TO NE 6-7, 8 IN N. FINE. SEA UP TO 6 M. SWELL NE 3 M. =
PARACEL= E TO NE 6-7. RAIN PATCHES. SEA 3-4 M. SWELL NE 2-3 M. =
TONKIN= N TO NE 5, 6 AT FIRST. ISOL SHOWERS AND TS. SEA 2 M, 3 M AT FIRST. =
DANANG= N TO NE 5, 6 AT FIRST. ISOL SHOWERS AND TS. SEA 2 M, 3 M AT FIRST. 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 19:30 HKT 27/Mar/2017

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 7:30 p.m. on 27 March 2017

    Warnings:
    Strong winds in all areas.

    Weather Situation:
    The northeast monsoon continues to affect the south China coastal waters.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    East force 5 to 6, occasionally force 7.
    Moderate to rough seas.

    Nan'ao, Shanwei, South of Hong Kong and Shangchuan Dao:
    East to northeast force 6 to 7.
    Rough seas.

    Outlook for the next 48 hours
    East to southeasterly winds of force 4 to 5, force 6 in east.

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

    Waglan Island Wind east force 4
      Visibility 11 Kilometres

    Shantou Wind east-southeast force 3
      Visibility 29 Kilometres

    Huangmaozhou Wind east-northeast force 6

    Macau Wind east-southeast force 3
      Visibility 17 Kilometres

    Xisha Wind east-northeast force 3
      Visibility 16 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
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    Weather Forecast for Local Aviation

    Bulletin issued at 17:30 HKT 27/MAR/2017
    (Next update at 01:30 HKT 28/MAR/2017)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     STRONG WINDS AND SEV TURB.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     THE NORTHEAST MONSOON CONTINUES TO AFFECT 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, OCNL 30                   22-17
   B.   2000 FT:  110/20-25, OCNL 30                   14
   C.   5000 FT:  160/10                               12
   D.  10000 FT:  240/15                               6
   E.  18000 FT:  260/35                               MS11
   F.  24000 FT:  250/55                               MS18
   G.  30000 FT:  250/75                               MS32
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      2500 - 2800 FT
   I. WEATHER       : 
      MAINLY CLOUDY.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 2500 FT  SCT 3500 FT.
   K. VISIBILITY    : 10 KM.
   L. 0 DEG. C LEVEL: 13500 FT      10 DEG. C LEVEL(S) : 6000 FT
   M. TURBULENCE    : MOD TO SEV
   N. SEA STATE     : 2.5-4.0 M     SEA TEMPERATURE    : 19 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE TO FRESH EASTERLY WINDS, OCCASIONALLY
     STRONG OFFSHORE. MAINLY CLOUDY AT FIRST, SUNNY
     INTERVALS DURING THE DAY.=

    ===================================================================
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 27/Mar/2017 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     16.9 C
Minimum Air Temperature                     13.8 C
Grass Minimum Temperature                   15.8 C
Relative Humidity                        64 - 93 Percent
Rainfall                                     1.0 mm 
Total rainfall since 1st January            53.5 mm
Against an average of                      142.4 mm

Other Stations                Min                  Max
King's Park                  13.0 C               16.4 C
Wong Chuk Hang               13.1 C               16.7 C
Ta Kwu Ling                  12.0 C               16.0 C
Lau Fau Shan                 12.4 C               16.1 C
Tai Po                       12.2 C               16.2 C
Sha Tin                      12.8 C               16.1 C
Tuen Mun                     12.9 C               16.2 C
Tseung Kwan O                12.8 C               16.4 C
Sai Kung                     12.7 C               15.9 C
Cheung Chau                  12.4 C               15.8 C
Chek Lap Kok                 13.3 C               17.7 C
Tsing Yi                     13.5 C               17.0 C
Shek Kong                    12.3 C               16.2 C
Tsuen Wan Ho Koon            11.4 C               15.1 C
Tsuen Wan Shing Mun Valley   13.2 C               16.6 C
Hong Kong Park               13.1 C               16.9 C
Shau Kei Wan                 12.8 C               16.8 C
Kowloon City                 12.5 C               15.9 C
Happy Valley                 13.9 C               17.3 C
Wong Tai Sin                 12.8 C               16.8 C
Stanley                      13.8 C               16.5 C
Kwun Tong                    13.0 C               16.3 C
Sham Shui Po                 13.4 C               17.0 C
Kai Tak Runway Park          13.7 C               17.0 C
Yuen Long Park               12.7 C               16.2 C
Tai Mei Tuk               12.3 C               15.6 C

Duration of sunshine (King's Park):              0.1 H
The mean UV index recorded at King's Park yesterday was 1,
the UV intensity was Low.
The maximum UV index for yesterday was 3.
Sea surface temperature (Waglan Island):        19.7 C 

Yesterday's (26 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                          0.10
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 26 Mar
     2003copy right image | Important notices | Privacy policy Last revision date: <27 Mar 2017> 

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