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Bulletin issued at 22:02 HKT 23/Feb/2018

At 10 p.m. at the Hong Kong Observatory the air temperature was 15 degrees Celsius and the relative humidity 86 per cent.

The air temperatures at other places were:

King's Park 15 degrees;
Wong Chuk Hang 15 degrees;
Ta Kwu Ling 15 degrees;
Lau Fau Shan 14 degrees;
Tai Po 15 degrees;
Sha Tin 15 degrees;
Tuen Mun 15 degrees;
Tseung Kwan O 14 degrees;
Sai Kung 15 degrees;
Cheung Chau 14 degrees;
Chek Lap Kok 16 degrees;
Tsing Yi 15 degrees;
Shek Kong 15 degrees;
Tsuen Wan Ho Koon 14 degrees;
Tsuen Wan Shing Mun Valley 15 degrees;
Hong Kong Park 15 degrees;
Shau Kei Wan 15 degrees;
Kowloon City 14 degrees;
Happy Valley 15 degrees;
Wong Tai Sin 15 degrees;
Stanley 15 degrees;
Kwun Tong 15 degrees;
Sham Shui Po 15 degrees;
Kai Tak Runway Park 16 degrees;
Yuen Long Park 15 degrees;
Tai Mei Tuk 14 degrees.


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


Climatological Information for 23 Feb

Regional Weather in Hong Kong

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Hong Kong Climatology


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Bulletin updated at 21:45 HKT 23/Feb/2018

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

The northeast monsoon is bringing cool weather to the coastal areas of Guangdong.

Weather forecast for tonight and tomorrow

Mainly cloudy. Cool with a few rain patches tonight and tomorrow morning. Coastal mist tomorrow night. Temperatures will range between 14 and 19 degrees. Moderate easterly winds, fresh at first.

Outlook : Mild during the day on Sunday. There will be sunny periods on Monday and Tuesday.


(The above forecast period is valid up to 23:59 HKT tomorrow, 24/02/2018; 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 21:00 HKT 23/Feb/2018

N0 WARNING.

GENERAL SITUATION AT 230900 UTC:
THE NORTHEAST MONSOON IS AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 231300 UTC:

HONG KONG= E 5-6. RAIN PATCHES. DOWN TO 2000 M IN MIST PATCHES LATER. SEA 2-3 M. SWELL N TO NE 2 M. TEMP 14-19 C. =
KWANGTUNG= E TO NE 5-6. RAIN PATCHES. DOWN TO 2000 M IN MIST PATCHES LATER. SEA 2-3 M. SWELL N TO NE 2-3 M. =
TAIWAN STRAIT= NE 5-6, OCNL 7. RAIN PATCHES. SEA UP TO 4 M. SWELL N TO NE 3 M. =
BASHI= E TO NE 6-7. RAIN PATCHES. SEA 3-4 M. SWELL N TO NE 2-3 M. =
PRATAS= E TO NE 5-6, OCNL 7. RAIN PATCHES. SEA UP TO 4 M. SWELL N TO NE 2-3 M. =
BALINTANG= E TO NE 6-7. RAIN PATCHES. SEA 3-4 M. SWELL N TO NE 2-3 M. =
SCARBOROUGH= E TO NE 5-6. FINE. SEA 2-3 M. SWELL N TO NE 2-3 M. =
PARACEL= E TO NE 5-6. RAIN PATCHES. SEA 2-3 M. SWELL N TO NE 2-3 M. =
TONKIN= N TO NE 4-5. RAIN PATCHES. SEA UP TO 2 M. SWELL N TO NE 2 M. =
DANANG= E TO NE 4-5. RAIN PATCHES. 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 19:30 HKT 23/Feb/2018

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 7:30 p.m. on 23 February 2018

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

    Weather Situation:
    The northeast monsoon is affecting the south China coastal waters.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    East force 5 to 6.
    A few rain patches. Mist patches later.
    Moderate to rough seas.

    Nan'ao, Shanwei and South of Hong Kong:
    East to northeast force 5 to 6.
    Moderate to rough seas.

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

    Outlook for the next 48 hours
    Easterly winds of force 4 to 5, becoming northerly winds of force 6 to 7.

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

    Waglan Island Wind northeast force 4
      Visibility 16 Kilometres

    Shantou Wind east force 2
      Visibility 26 Kilometres

    Dongsha Wind east-northeast force 4
      Visibility 10 Kilometres

    Huangmaozhou Wind east-northeast force 4

    Macau Wind north-northeast force 2
      Visibility 7 Kilometres

    Xisha Wind east force 2
      Visibility 22 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 17:30 HKT 23/FEB/2018
    (Next update at 01:30 HKT 24/FEB/2018)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     STRONG WINDS AND SEV TURB OFFSHORE.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     THE NORTHEAST MONSOON 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:  080/10-15
       OFFSHORE:  080/20-25                            17-15
   B.   2000 FT:  120/20                               12
   C.   5000 FT:  180/15                               13
   D.  10000 FT:  260/25                               6
   E.  18000 FT:  250/40                               MS8
   F.  24000 FT:  250/60                               MS19
   G.  30000 FT:  250/80                               MS32
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      2800 - 3600, 4200 - 5000 FT.
   I. WEATHER       : 
      MAINLY CLOUDY WITH A FEW RAIN PATCHES.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1500 FT  SCT 3000 FT  BKN 8000 FT.
   K. VISIBILITY    : 9 KM.  TEMPO 4000 M IN RAIN.
   L. 0 DEG. C LEVEL: 14000 FT
      10 DEG. C LEVEL(S) : 3200, 8200 FT
   M. TURBULENCE    : MOD TO SEV OFFSHORE AND NEAR HILLS.
   N. SEA STATE     : 2.0-3.0 M     SEA TEMPERATURE    : 17 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE EASTERLY WINDS, FRESH AT FIRST.  MAINLY
     CLOUDY WITH A FEW RAIN 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 23/Feb/2018 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     16.8 C
Minimum Air Temperature                     13.0 C
Grass Minimum Temperature                   14.0 C
Relative Humidity                        81 - 95 Percent
Rainfall                                     2.3 mm 
Total rainfall since 1st January            64.5 mm
Against an average of                       67.0 mm

Other Stations                Min                  Max
King's Park                  12.4 C               16.1 C
Wong Chuk Hang               13.1 C               17.2 C
Ta Kwu Ling                  11.5 C               15.7 C
Lau Fau Shan                 11.3 C               15.8 C
Tai Po                       11.6 C               16.4 C
Sha Tin                      12.0 C               16.4 C
Tuen Mun                     11.9 C               17.2 C
Tseung Kwan O                12.0 C               15.6 C
Sai Kung                     12.1 C               16.2 C
Cheung Chau                  11.6 C               16.3 C
Chek Lap Kok                 12.4 C               18.3 C
Tsing Yi                     12.7 C               17.1 C
Shek Kong                    11.8 C               17.1 C
Tsuen Wan Ho Koon            11.3 C               16.0 C
Tsuen Wan Shing Mun Valley   12.4 C               16.8 C
Hong Kong Park               12.7 C               16.8 C
Shau Kei Wan                 12.1 C               16.0 C
Kowloon City                 12.1 C               16.1 C
Happy Valley                 13.1 C               17.2 C
Wong Tai Sin                 12.3 C               16.4 C
Stanley                      12.7 C               16.5 C
Kwun Tong                    12.2 C               15.6 C
Sham Shui Po                 12.5 C               17.1 C
Kai Tak Runway Park          12.9 C               16.8 C
Yuen Long Park               11.5 C               17.1 C
Tai Mei Tuk               11.6 C               15.7 C

Duration of sunshine (King's Park):              0 H
The mean UV index recorded at King's Park yesterday was 0.4,
the UV intensity was Low.
The maximum UV index for yesterday was 1.
Sea surface temperature (Waglan Island):        15.9 C 

Yesterday's (22 Feb 2018) average ambient gamma radiation
dose rate taken outdoors in Hong Kong ranged from 0.09 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                           0.09
Tap Mun                             0.09
Kat O                               0.11
Yuen Ng Fan                         0.12
Tai Mei Tuk                         0.13
Sha Tau Kok                         0.11
Kwun Tong                           0.12
Sai Wan Ho                          0.10
King's Park                         0.15
Tsim Bei Tsui                       0.13
Cape D'Aguilar                      0.14
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 22 Feb
     2003copy right image | Important notices | Privacy policy Last revision date: <23 Feb 2018> 

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