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Bulletin issued at 01:02 HKT 06/Mar/2018

At 1 a.m. at the Hong Kong Observatory the air temperature was 23 degrees Celsius and the relative humidity 94 per cent.

The air temperatures at other places were:

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


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


Climatological Information for 6 Mar

Regional Weather in Hong Kong

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

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Bulletin updated at 00:45 HKT 06/Mar/2018

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

Under the influence of a maritime airstream, the local weather was humid and foggy yesterday. Visibility over the harbour once fell below 1000 metres. There were sunny periods during the day with temperatures over most parts of the territory rose to around 28 degrees. Besides, a cold front formed over the northern part of southern China yesterday morning and moved southwards gradually. It is expected to cross the coast of Guangdong this morning and bring appreciably cooler weather to the region.

Weather forecast for Hong Kong

Mainly cloudy with a few rain patches. A few fog patches at first. It will become cooler appreciably. Temperatures will fall from about 24 degrees at first to a minimum of around 18 degrees. Light winds, strengthening from the east gradually.

Outlook : Windy with a few rain patches in the following couple of days. Temperatures dropping further on Thursday. Weather improving on Friday with cold morning.


(The above forecast period is valid up to 23:59 HKT today, 06/03/2018; 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 21:00 HKT 05/Mar/2018

GALE WARNING AREAS: KWANGTUNG, TAIWAN STRAIT, BASHI AND BALINTANG.

GENERAL SITUATION AT 050900 UTC:
COLD FRONT 24N 105E 23N 110E 24N 115E 24N 125E S 10KT.

MARINE FORECAST FOR 24 HOURS FROM 051300 UTC:

HONG KONG= E 4, BEC 6-7. DOWN TO 100 M IN FOG PATCHES AT FIRST. RAIN PATCHES TOMORROW. SEA 3-4 M LATER. TEMP 18-24 C. =
KWANGTUNG= E 4-5, BEC 6-7, OCNL 8. RAIN PATCHES. DOWN TO 500 M IN FOG PATCHES AT FIRST.. SEA UP TO 2 M, BEC 4-6 M. SWELL E UP TO 2 M. =
TAIWAN STRAIT= NE 7-8. ISOL SHOWERS AND TS. SEA 4-6 M. SWELL NE 2 M. =
BASHI= SE 4-5, BEC NE 7-8. ISOL SHOWERS AND TS. SEA UP TO 2 M, BEC 4-6 M. =
PRATAS= E 4-5, BEC 6-7. RAIN PATCHES. SEA UP TO 2 M, BEC 3-4 M. =
BALINTANG= SE 4-5, BEC NE 7-8. ISOL SHOWERS AND TS. SEA UP TO 2 M, BEC 4-6 M. =
SCARBOROUGH= NE 4-5, BEC 6. FINE. SEA UP TO 2 M, BEC 3 M. =
PARACEL= E 4-5. DOWN TO 500 M IN FOG PATCHES IN N AT FIRST. SEA UP TO 2 M. =
TONKIN= E TO SE 4-5. DOWN TO 500 M IN FOG OR RAIN PATCHES. SEA UP TO 2 M. =
DANANG= SE 4-5. DOWN TO 500 M IN FOG OR RAIN PATCHES. SEA 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
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    • 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 05/Mar/2018

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 11:30 p.m. on 05 March 2018

    Warnings:
    Gale force winds in Nan'ao. Strong winds in Hong Kong adjacent waters, Shanwei, south of Hong Kong and Shangchuan Dao. Fog in all areas.

    Weather Situation:
    The cold front over inland Guangdong is moving southwards gradually. It is expected to cross the coastal waters of Guangdong on Tuesday morning.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    East force 4, becoming force 6 to 7.
    A few rain patches Fog patches at first.
    Moderate seas, becoming rough.

    Nan'ao:
    East to northeast force 7 to 8.
    Fog patches at first.
    Rough to very rough seas.

    Shanwei:
    East to northeast force 6 to 7.
    Fog patches at first.
    Rough seas.

    South of Hong Kong:
    East force 4 to 5, becoming force 6 to 7.
    Fog patches at first.
    Moderate seas, becoming rough.

    Shangchuan Dao:
    East force 4 to 5, becoming force 6.
    Fog patches at first.
    Moderate seas, becoming rough.

    Outlook for the next 48 hours
    Easterly winds of force 6 to 7, becoming northerly winds of up to force 8 later.

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

    Waglan Island Wind calm
      Visibility 8 Kilometres

    Shantou Wind south-southeast force 1
      Visibility 15 Kilometres

    Dongsha Wind northeast force 2
      Visibility 10 Kilometres

    Huangmaozhou Wind east-southeast force 3

    Macau Wind south-southwest force 1
      Visibility 4300 Metres in mist

    Xisha Wind east-southeast force 1
      Visibility 30 Kilometres

  • Explanation of Seas or Sea Waves
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    • WEATHER FORECAST FOR LOCAL AVIATION
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    Weather Forecast for Local Aviation

    Bulletin issued at 01:30 HKT 06/MAR/2018
    (Next update at 9:00-9:30 HKT 06/MAR/2018)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     STRONG WINDS AND SEV TURB. FOG.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     THE COLD FRONT OVER INLAND GUANGDONG IS MOVING SOUTHWARDS
     GRADUALLY.  IT IS EXPECTED TO CROSS THE COASTAL AREAS IN
     THE MORNING.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 0200 TO 1200 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  VRB/5
                  BEC 090/10-15
       OFFSHORE:  150/5-10
                  BEC 090/15-20, OCNL 25               18-24
   B.   2000 FT:  120/10-15, OCNL 20 LATER             17-20
   C.   5000 FT:  220/10                               18
   D.  10000 FT:  240/20                               10
   E.  18000 FT:  280/30                               MS5
   F.  24000 FT:  280/40                               MS16
   G.  30000 FT:  300/60                               MS27
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      MAINLY CLOUDY WITH A FEW RAIN PATCHES. COASTAL
      FOG. LOCALIZED MIST.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1000 FT  SCT 2000 FT.
   K. VISIBILITY    : 7 KM. TEMPO 2000 M IN RAIN/MIST. 
                      TEMPO 300 M IN FOG.
   L. 0 DEG. C LEVEL: 16000 FT      10 DEG. C LEVEL(S) : 9600 FT
   M. TURBULENCE    : MOD TO SEV OFFSHORE AND NEAR HILLS LATER.
   N. SEA STATE     : 1.0-1.5 M     SEA TEMPERATURE    : 19 DEG
IV.  FURTHER OUTLOOK: 
     FRESH EASTERLY WINDS, STRONG OFFSHORE.  MAINLY CLOUDY WITH
     A FEW RAIN PATCHES. LOCALIZED MIST PATCHES.=

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

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

Hong Kong Observatory
Maximum Air Temperature                     27.8 C
Minimum Air Temperature                     23.4 C
Grass Minimum Temperature                   22.0 C
Relative Humidity                        70 - 94 Percent
Rainfall                                     0.0 mm 
Total rainfall since 1st January            66.7 mm
Against an average of                       94.8 mm

Other Stations                Min                  Max
King's Park                  23.1 C               28.4 C
Wong Chuk Hang               22.1 C               27.4 C
Ta Kwu Ling                  21.6 C               29.8 C
Lau Fau Shan                 22.3 C               27.0 C
Tai Po                       21.6 C               25.9 C
Sha Tin                      21.9 C               29.7 C
Tuen Mun                     22.9 C               28.6 C
Tseung Kwan O                20.8 C               27.9 C
Sai Kung                     20.9 C               24.7 C
Cheung Chau                  21.7 C               26.2 C
Chek Lap Kok                 23.1 C               29.5 C
Tsing Yi                     22.3 C               28.8 C
Shek Kong                    22.7 C               30.6 C
Tsuen Wan Ho Koon            21.8 C               27.9 C
Tsuen Wan Shing Mun Valley   23.1 C               28.9 C
Hong Kong Park               22.3 C               28.2 C
Shau Kei Wan                 20.1 C               23.9 C
Kowloon City                 23.1 C               30.4 C
Happy Valley                 23.4 C               28.8 C
Wong Tai Sin                 23.1 C               29.2 C
Stanley                      20.9 C               27.1 C
Kwun Tong                    23.4 C               28.8 C
Sham Shui Po                 23.4 C               28.3 C
Kai Tak Runway Park          19.8 C               24.9 C
Yuen Long Park               22.6 C               31.2 C
Tai Mei Tuk               21.9 C               30.0 C

Duration of sunshine (King's Park):              7.9 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):        17.9 C 

Yesterday's (05 Mar 2018) average ambient gamma radiation
dose rate taken outdoors in Hong Kong ranged from 0.08 to
0.14 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                             0.08
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                        0.14

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 05 Mar
     2003copy right image | Important notices | Privacy policy Last revision date: <06 Mar 2018> 

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