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Bulletin issued at 12:02 HKT 28/Feb/2018

At noon at the Hong Kong Observatory the air temperature was 23 degrees Celsius and the relative humidity 74 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 24 degrees;
Wong Chuk Hang 23 degrees;
Ta Kwu Ling 25 degrees;
Lau Fau Shan 23 degrees;
Tai Po 23 degrees;
Sha Tin 24 degrees;
Tuen Mun 25 degrees;
Tseung Kwan O 25 degrees;
Sai Kung 23 degrees;
Cheung Chau 23 degrees;
Chek Lap Kok 23 degrees;
Tsing Yi 24 degrees;
Shek Kong 26 degrees;
Tsuen Wan Ho Koon 24 degrees;
Tsuen Wan Shing Mun Valley 26 degrees;
Hong Kong Park 25 degrees;
Shau Kei Wan 23 degrees;
Kowloon City 26 degrees;
Happy Valley 26 degrees;
Wong Tai Sin 25 degrees;
Stanley 22 degrees;
Kwun Tong 25 degrees;
Sham Shui Po 25 degrees;
Kai Tak Runway Park 23 degrees;
Yuen Long Park 25 degrees;
Tai Mei Tuk 25 degrees.

A trace of rainfall was recorded at the Hong Kong Observatory between midnight last night and midday today.


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


Climatological Information for 28 Feb

Regional Weather in Hong Kong

Information on Tropical Cyclones

Hong Kong Climatology


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

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Bulletin updated at 11:45 HKT 28/Feb/2018

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

The cloud band covering southern China is thinning out.

Weather forecast for this afternoon and tonight

Mainly fine. Visibility relatively low in some areas. Light winds.

Outlook : Warm during the day in the next few days. Moist with fog in the latter part of this week to early next week.


(The above forecast period is valid up to 23:59 HKT today, 28/02/2018; Regular update at : around 45 minutes past each hour, 16:15 HKT and 23:15 HKT)

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MARINE FORECAST
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Marine Forecast

Weather Information for the Marine Community

Bulletin issued at 09:00 HKT 28/Feb/2018

N0 WARNING.

GENERAL SITUATION AT 272100 UTC:
AN EASTERLY AIRSTREAM IS AFFECTING THE FORECAST AREAS. TROUGH 25N 111E 27N 115E 30N 119E SE SLOWLY.

MARINE FORECAST FOR 24 HOURS FROM 280100 UTC:

HONG KONG= E 4-5. LGT RAIN PATCHES AT FIRST. DOWN TO 2000 M IN MIST PATCHES LATER. SEA UP TO 2 M. TEMP 25-18 C. =
KWANGTUNG= E TO NE 4-5. DOWN TO 1000 M IN MIST OR RAIN PATCHES. SEA UP TO 2 M. SWELL E 2 M. =
TAIWAN STRAIT= SW 4-5, NE 4-5 LATER. RAIN PATCHES. SEA UP TO 2 M. SWELL NE 2 M. =
BASHI= SE 5-6, E TO NE 5-6 LATER. RAIN PATCHES. SEA 2-3 M. SWELL E TO NE 3 M. =
PRATAS= E TO NE 4-5. RAIN PATCHES. SEA UP TO 2 M. SWELL E TO NE 2-3 M. =
BALINTANG= SE 5-6, E TO NE 5-6 LATER. RAIN PATCHES. SEA 2-3 M. SWELL E TO NE 3 M. =
SCARBOROUGH= E TO NE 4-5. FINE. SEA UP TO 2 M. SWELL NE 2-3 M. =
PARACEL= E 4-5. DOWN TO 1000 M IN MIST OR RAIN PATCHES IN N. SEA UP TO 2 M. SWELL E TO NE 2 M. =
TONKIN= E TO SE 4. DOWN TO 500 M IN FOG OR RAIN PATCHES. =
DANANG= E TO SE 4-5. DOWN TO 1000 M IN MIST OR RAIN PATCHES. SEA UP TO 2 M. SWELL E TO NE 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 12:30 HKT 28/Feb/2018

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 12:30 p.m. on 28 February 2018

    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 3 to 4.
    Visibility relatively low in some areas.
    Slight to moderate seas.

    Nan'ao:
    Northeast force 4, occasionally force 5.
    Moderate seas.

    Shanwei, South of Hong Kong and Shangchuan Dao:
    East to northeast force 4, occasionally force 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 variable force 1
      Visibility 14 Kilometres

    Shantou Wind south-southwest force 2
      Visibility 8 Kilometres

    Dongsha Wind east-northeast force 1
      Visibility 10 Kilometres

    Huangmaozhou Wind east-northeast force 2

    Macau Wind north-northeast force 1
      Visibility 6 Kilometres

    Xisha Wind northeast force 1
      Visibility 17 Kilometres

  • Explanation of Seas or Sea Waves
  • Explanation of Swells
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  • Visibility Readings in Hong Kong Waters
  • Map showing forecast areas
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    • WEATHER FORECAST FOR LOCAL AVIATION
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    Weather Forecast for Local Aviation

    Bulletin issued at 09:30 HKT 28/FEB/2018
    (Next update at 17:30 HKT 28/FEB/2018)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     NIL.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     AN EASTERLY AIRSTREAM IS GENERALLY AFFECTING THE
     COASTAL AREAS OF GUANGDONG.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1000 TO 2000 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  040/5-10
       OFFSHORE:  080/15                               20-25
   B.   2000 FT:  340/15                               19
   C.   5000 FT:  330/15                               13
   D.  10000 FT:  270/35                               7
   E.  18000 FT:  270/55                               MS8
   F.  24000 FT:  260/75                               MS18
   G.  30000 FT:  260/85                               MS27
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      1200-2000 FT
   I. WEATHER       : 
      MAINLY CLOUDY. A FEW LIGHT RAIN PATCHES.
      LOCALISED MIST.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 2000 FT  SCT 3000 FT.
   K. VISIBILITY    : 7 KM.  TEMPO 3500 M IN RAIN/MIST.
   L. 0 DEG. C LEVEL: 13500 FT      10 DEG. C LEVEL(S) : 7400 FT
   M. TURBULENCE    : MOD OFFSHORE AND NEAR HILLS
   N. SEA STATE     : 1.5-2.5 M     SEA TEMPERATURE    : 17 DEG
IV.  FURTHER OUTLOOK: 
     LIGHT TO MODERATE EASTERLY WINDS. CLOUDY PERIODS. LOCALIZED MIST OR HAZE.=

    ===================================================================
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 15:35 HKT on 22 Feb 18

    VHHK SIGMET 1 VALID 220735/221135 VHHH- VHHK HONG KONG FIR SEV ICE FCST N OF N2030 AND E OF E11300 FL130/210 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/Feb/2018 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     23.2 C
Minimum Air Temperature                     15.8 C
Grass Minimum Temperature                   14.6 C
Relative Humidity                        56 - 81 Percent
Rainfall                                     0.0 mm 
Total rainfall since 1st January            66.7 mm
Against an average of                       77.3 mm

Other Stations                Min                  Max
King's Park                  15.0 C               24.0 C
Wong Chuk Hang               15.8 C               23.2 C
Ta Kwu Ling                  13.0 C               24.8 C
Lau Fau Shan                 13.6 C               20.8 C
Tai Po                       14.6 C               22.0 C
Sha Tin                      15.0 C               23.6 C
Tseung Kwan O                14.1 C               23.1 C
Sai Kung                     14.7 C               19.8 C
Cheung Chau                  15.0 C               21.1 C
Chek Lap Kok                 16.3 C               22.5 C
Tsing Yi                     15.8 C               23.1 C
Shek Kong                    15.3 C               25.0 C
Tsuen Wan Ho Koon            13.9 C               22.7 C
Tsuen Wan Shing Mun Valley   15.1 C               24.1 C
Hong Kong Park               15.5 C               22.7 C
Shau Kei Wan                 14.5 C               20.6 C
Kowloon City                 15.0 C               24.0 C
Happy Valley                 15.6 C               25.1 C
Wong Tai Sin                 15.1 C               23.9 C
Stanley                      14.9 C               20.7 C
Kwun Tong                    14.4 C               23.0 C
Sham Shui Po                 15.3 C               22.6 C
Kai Tak Runway Park          15.6 C               21.1 C
Yuen Long Park               14.0 C               24.9 C
Tai Mei Tuk               14.1 C               23.7 C

Duration of sunshine (King's Park):              8.5 H
The mean UV index recorded at King's Park yesterday was 4,
the UV intensity was Moderate.
The maximum UV index for yesterday was 8.
Sea surface temperature (Waglan Island):        16.8 C 

Yesterday's (27 Feb 2018) 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 in the
past, the hourly mean ambient gamma radiation dose rate may
vary between 0.06 and 0.3 microsievert per hour. (1
microsievert = 0.000001 sievert = 0.001 millisievert)

    2. Temporal variations are generally caused by changes in
meteorological conditions such as rainfall, wind and
barometric pressure.

    3. Spatial variations are generally caused by differences in
the radioactive content of local rock and soil.

    4. The data displayed is provisional. Only limited data
validation has been carried out.
    Climatological Information for 27 Feb
     2003copy right image | Important notices | Privacy policy Last revision date: <28 Feb 2018> 

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