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Bulletin issued at 10:02 HKT 03/Mar/2018

At 10 a.m. at the Hong Kong Observatory the air temperature was 21 degrees Celsius and the relative humidity 91 per cent.
During the past hour the mean UV Index recorded at King's Park was 1. The intensity of UV radiation was low.

The air temperatures at other places were:

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


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


Climatological Information for 3 Mar

Regional Weather in Hong Kong

Information on Tropical Cyclones

Hong Kong Climatology


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Bulletin updated at 09:45 HKT 03/Mar/2018

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

A humid maritime airstream is affecting the coast of Guangdong. Locally, visibility at Waglan Island fell to around 100 metres this morning.

Weather forecast for today

Mainly cloudy. Humid and foggy. Warm with sunny intervals in the afternoon. Light to moderate southeasterly winds.

Outlook : Humid with fog in the next couple of days. Warm during the day. Become cool appreciably in the middle and latter parts of next week.


(The above forecast period is valid up to 23:59 HKT today, 03/03/2018; 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 03/Mar/2018

N0 WARNING.

GENERAL SITUATION AT 022100 UTC:
A SOUTHEASTERLY AIRSTREAM IS AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 030100 UTC:

HONG KONG= E TO SE 4-5. DOWN TO 500 M IN FOG OR LGT RAIN PATCHES. SEA UP TO 2 M. TEMP 26-22 C. =
KWANGTUNG= SE 4-5. DOWN TO 500 M IN FOG OR RAIN PATCHES. SEA UP TO 2 M. =
TAIWAN STRAIT= S 4-5. DOWN TO 500 M IN FOG OR RAIN PATCHES. SEA UP TO 2 M. =
BASHI= SE 4-5. FINE. SEA UP TO 2 M. =
PRATAS= SE 4-5. FINE. SEA UP TO 2 M. =
BALINTANG= SE 4-5. FINE. SEA UP TO 2 M. =
SCARBOROUGH= E TO SE 4, OCNL 5. FINE. SEA UP TO 2 M. =
PARACEL= S TO SE 4-5. DOWN TO 500 M IN FOG PATCHES IN N. SEA UP TO 2 M. =
TONKIN= S 5-6. DOWN TO 500 M IN FOG OR RAIN PATCHES. SEA 2-3 M. =
DANANG= S 5, OCNL 6. DOWN TO 500 M IN FOG OR RAIN PATCHES. SEA UP TO 3 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

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    9-day Weather Forecast | UV Index Forecast | Weather Information for Fishermen

    Bulletin issued at 09:30 HKT 03/Mar/2018

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 9:30 a.m. on 03 March 2018

    Warnings:
    Fog in all areas.

    Weather Situation:
    A humid southeasterly airstream is affecting the south China coastal waters.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    East to southeast force 4 to 5.
    Fog patches, a few light rain patches.
    Moderate seas.

    Nan'ao, Shanwei and South of Hong Kong:
    Southeast force 4 to 5.
    Fog patches.
    Moderate seas.

    Shangchuan Dao:
    South to southeast force 4 to 5.
    Fog patches.
    Moderate seas.

    Outlook for the next 48 hours
    South to southeasterly winds of force 4 to 5, becoming easterly winds of force 6 to 7 later. Fog patches.

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

    Waglan Island Wind north-northeast force 2
      Visibility 460 Metres

    Shantou Wind north force 1
      Visibility 4800 Metres in mist

    Dongsha Wind north force 2
      Visibility 10 Kilometres

    Huangmaozhou Wind east force 4

    Macau Wind south-southeast force 3
      Visibility 900 Metres in fog

    Xisha Wind southeast force 1
      Visibility 12 Kilometres

  • Explanation of Seas or Sea Waves
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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 03/MAR/2018
    (Next update at 12:30 HKT 03/MAR/2018)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     NIL
II.  SYNOPSIS OF THE WEATHER SITUATION :
     A HUMID MARITIME AIRSTREAM IS AFFECTING THE
     COAST OF GUANGDONG.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1000 TO 2000 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  120/5-10
       OFFSHORE:  100/15                               22-26
   B.   2000 FT:  160/15                               20
   C.   5000 FT:  230/15                               15
   D.  10000 FT:  270/35                               7
   E.  18000 FT:  270/30                               MS3
   F.  24000 FT:  250/50                               MS19
   G.  30000 FT:  240/70                               MS29
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      MAINLY CLOUDY. SUNNY INTERVALS IN THE
      AFTERNOON. LOCALIZED MIST.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1500 FT SCT 2500 FT
   K. VISIBILITY    : 5 KM. TEMPO 2000 M IN MIST.
   L. 0 DEG. C LEVEL: 16000 FT      10 DEG. C LEVEL(S) : 8800 FT
   M. TURBULENCE    : MOD OFFSHORE AND NEAR HILLS.
   N. SEA STATE     : 1.0-1.5 M     SEA TEMPERATURE    : 19 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE SOUTHEASTERLY WINDS. MAINLY CLOUDY WITH
     ONE OR TWO LIGHT RAIN PATCHES. LOCALIZED
     MIST/FOG.=

    ===================================================================
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 03/Mar/2018 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     24.7 C
Minimum Air Temperature                     19.5 C
Grass Minimum Temperature                   19.6 C
Relative Humidity                        61 - 91 Percent
Rainfall                                      Trace 
Total rainfall since 1st January            66.7 mm
Against an average of                       86.7 mm

Other Stations                Min                  Max
King's Park                  19.0 C               24.6 C
Wong Chuk Hang               20.0 C               25.9 C
Ta Kwu Ling                  19.6 C               27.7 C
Lau Fau Shan                 19.0 C               25.1 C
Tai Po                       19.3 C               23.8 C
Sha Tin                      19.7 C               25.6 C
Tuen Mun                     19.4 C               25.0 C
Tseung Kwan O                18.3 C               23.7 C
Sai Kung                     18.7 C               23.1 C
Cheung Chau                  18.5 C               23.9 C
Chek Lap Kok                 20.3 C               26.9 C
Tsing Yi                     20.2 C               27.2 C
Shek Kong                    20.4 C               28.7 C
Tsuen Wan Ho Koon            19.2 C               25.3 C
Tsuen Wan Shing Mun Valley   20.0 C               26.9 C
Hong Kong Park               19.3 C               24.3 C
Shau Kei Wan                 18.2 C               22.8 C
Kowloon City                 19.4 C               25.5 C
Happy Valley                 19.5 C               26.4 C
Wong Tai Sin                 19.5 C               25.9 C
Stanley                      18.3 C               23.4 C
Kwun Tong                    18.8 C               23.7 C
Sham Shui Po                 20.1 C               25.8 C
Kai Tak Runway Park          18.9 C               22.4 C
Yuen Long Park               19.9 C               28.2 C
Tai Mei Tuk               18.8 C               26.0 C

Duration of sunshine (King's Park):              5.4 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 7.
Sea surface temperature (Waglan Island):        17.0 C 

Yesterday's (02 Mar 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                               0.11
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 02 Mar
     2003copy right image | Important notices | Privacy policy Last revision date: <03 Mar 2018> 

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