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Bulletin issued at 21:02 HKT 21/Feb/2019

At 9 p.m. at the Hong Kong Observatory the air temperature was 22 degrees Celsius and the relative humidity 94 per cent.

The air temperatures at other places were:

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


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


Climatological Information for 21 Feb

Regional Weather in Hong Kong

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Bulletin updated at 20:45 HKT 21/Feb/2019

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

A humid maritime airstream is affecting the coast of Guangdong. Meanwhile, the cold front over inland Guangdong is moving southwards gradually. It is expected to reach the coastal areas overnight.

Weather forecast for tonight and tomorrow

Mainly cloudy. A few rain patches and coastal fog tonight and tomorrow morning. It will be cooler tomorrow. The minimum temperature will be about 18 degrees in the urban areas, and a couple of degrees lower in the New Territories. Bright periods in the afternoon. The maximum temperature will be around 22 degrees. Moderate easterly winds, becoming north to northeasterlies overnight.

Outlook : Cool and windy with a few rain patches during the weekend.


(The above forecast period is valid up to 23:59 HKT tomorrow, 22/02/2019; 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 21/Feb/2019

N0 WARNING.

GENERAL SITUATION AT 210900 UTC:
COLD FRONT 21N 109E 23N 113E 25N 117E S 5KT.

MARINE FORECAST FOR 24 HOURS FROM 211300 UTC:

HONG KONG= E 4, BEC N TO NE 4-5. DOWN TO 100 M IN FOG OR RAIN PATCHES. SEA BEC UP TO 2 M. SWELL E TO NE UP TO 2 M. TEMP 18-22 C. =
KWANGTUNG= E TO SE 4-5, BEC N TO NE 4-5, OCNL 6 IN E. DOWN TO 100 M IN FOG PATCHES. ISOL SHOWERS AND TS IN W AT FIRST. SEA 2 M, BEC UP TO 3 M IN E. SWELL E TO NE UP TO 2 M. =
TAIWAN STRAIT= NE 5-6. ISOL SHOWERS AND TS. DOWN TO 500 M IN FOG PATCHES. SEA 2-3 M. SWELL NE 2 M. =
BASHI= SE 4-5, NE UP TO 6 LATER. FINE. SEA 2 M, UP TO 3 M LATER. SWELL E UP TO 2 M. =
PRATAS= E TO SE 4-5, N TO NE UP TO 6 LATER. FINE. SEA 2 M, UP TO 3 M LATER. SWELL E TO NE UP TO 2 M LATER. =
BALINTANG= SE 4-5, NE 4-5 LATER. FINE. SEA UP TO 2 M. SWELL E UP TO 2 M. =
SCARBOROUGH= E TO SE 4-5, N TO NE 4-5 LATER. FINE. SEA UP TO 2 M. =
PARACEL= E TO SE 4-5. FINE. SEA UP TO 2 M. =
TONKIN= N TO NE 5-6. DOWN TO 2000 M IN MIST OR LGT RAIN PATCHES. SEA 2-3 M. =
DANANG= E TO SE 4-5. DOWN TO 2000 M IN MIST OR LGT 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
  • 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 21/Feb/2019

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 7:30 p.m. on 21 February 2019

    Warnings:
    Strong winds in Nan'ao and Shanwei. Fog in all areas.

    Weather Situation:
    The cold front over inland Guangdong is moving southwards gradually. It is expected to reach the south China coastal waters overnight.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    East force 4, becoming north to northeast force 4 to 5.
    Fog patches and a few rain patches.
    Moderate seas.

    Nan'ao and Shanwei:
    East force 4 to 5, becoming north to northeast force 4 to 5, occasionally force 6.
    Fog patches.
    Moderate seas, becoming rough.

    South of Hong Kong and Shangchuan Dao:
    Southeast force 4, occasionally force 5, becoming north to northeast force 4 to 5.
    Fog patches. Isolated showers and thunderstorms at first.
    Moderate seas.

    Outlook for the next 48 hours
    East to northeasterly winds of force 5 to 6, occasionally force 7.

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

    Waglan Island Wind northeast force 3
      Visibility 4300 Metres

    Shantou Wind south-southeast force 1
      Visibility 8 Kilometres

    Dongsha Wind east-southeast force 1
      Visibility 10 Kilometres

    Huangmaozhou Wind east force 4

    Xisha Wind southeast force 2
      Visibility 30 Kilometres

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

    Bulletin issued at 17:30 HKT 21/FEB/2019
    (Next update at 01:30 HKT 22/FEB/2019)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     ISOL CUNIM/TS AND ASSOCIATED HAZARDS. 
     FOG.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     A HUMID MARITIME AIRSTREAM IS AFFECTING THE
     COAST OF GUANGDONG. MEANWHILE, A COLD FRONT HAS
     FORMED OVER THE NORTHERN PART OF GUANGDONG AND
     IS MOVING SOUTHWARDS GRADUALLY. IT IS EXPECTED
     TO REACH THE COASTAL AREAS OVERNIGHT.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1800 TO 0400 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  100/5-10
                  BECMG 360/10
                  TEMPO VRB/15G25 IN TS
       OFFSHORE:  100/10-15
                  BECMG 360/15-20                      25-18
   B.   2000 FT:  160/15-20
                  BECMG 300/10-15                      19
   C.   5000 FT:  260/20                               16
   D.  10000 FT:  260/25                               6
   E.  18000 FT:  270/40                               MS6
   F.  24000 FT:  260/50                               MS20
   G.  30000 FT:  270/60                               MS32
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      MAINLY CLOUDY. A FEW SHOWERS WITH ISOLATED
      THUNDERSTROMS. LOCALISED MIST/FOG.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1000 FT  SCT 2000 FT TEMPO FEW CB 800 FT
      SCT 1200 FT BKN 4000 FT
   K. VISIBILITY    : 7 KM. TEMPO 3000 M IN MIST/SHOWERS.  
                      TEMPO 2000 M IN TS. 
                      TEMPO 800 M IN FOG.
   L. 0 DEG. C LEVEL: 15000 FT      10 DEG. C LEVEL(S) : 8400 FT
   M. TURBULENCE    : MOD TO SEV
   N. SEA STATE     : 1.0-2.5 M     SEA TEMPERATURE    : 21 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE TO FRESH NORTH TO NORTHEASTERLY WINDS.
     MAINLY CLOUDY WITH A FEW RAIN PATCHES. LOCALISED
     MIST/FOG IN THE MORNING.=

    ===================================================================
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.

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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.

    There is no Significant Weather Information (SIGMET)

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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 21/Feb/2019 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     25.6 C
Minimum Air Temperature                     20.8 C
Grass Minimum Temperature                   20.1 C
Relative Humidity                        84 - 97 Percent
Rainfall                                     0.2 mm 
Total rainfall since 1st January            56.1 mm
Against an average of                       64.3 mm

Other Stations                Min                  Max
King's Park                  20.5 C               25.6 C
Wong Chuk Hang               21.9 C               25.3 C
Ta Kwu Ling                  20.6 C               28.2 C
Lau Fau Shan                 20.0 C               28.0 C
Tai Po                       20.4 C               24.8 C
Sha Tin                      21.0 C               26.2 C
Tuen Mun                     21.5 C               26.9 C
Tseung Kwan O                19.8 C               24.6 C
Sai Kung                     20.5 C               23.1 C
Cheung Chau                  20.6 C               25.3 C
Chek Lap Kok                 21.9 C               26.2 C
Tsing Yi                     21.4 C               26.6 C
Shek Kong                    20.9 C               28.2 C
Tsuen Wan Ho Koon            20.7 C               26.2 C
Tsuen Wan Shing Mun Valley   21.4 C               27.0 C
Shau Kei Wan                 19.7 C               22.9 C
Kowloon City                 20.4 C               26.8 C
Happy Valley                 21.2 C               26.2 C
Wong Tai Sin                 21.1 C               25.8 C
Stanley                      20.2 C               25.7 C
Kwun Tong                    20.3 C               25.7 C
Sham Shui Po                 21.4 C               26.6 C
Kai Tak Runway Park          20.3 C               24.5 C
Yuen Long Park               20.9 C               27.7 C
Tai Mei Tuk               20.6 C               27.9 C

Duration of sunshine (King's Park):              1.2 H
The mean UV index recorded at King's Park yesterday was 2,
the UV intensity was Low.
The maximum UV index for yesterday was 5.
 

Yesterday's (20 Feb 2019) 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                           0.09
Tap Mun                             0.08
Kat O                               0.10
Yuen Ng Fan                         0.12
Tai Mei Tuk                         0.11
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 20 Feb
     2003copy right image | Important notices | Privacy policy Last revision date: <21 Feb 2019> 

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