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Bulletin issued at 17:02 HKT 23/Jan/2019

At 5 p.m. at the Hong Kong Observatory the air temperature was 18 degrees Celsius and the relative humidity 68 per cent.
During the past hour the mean UV Index recorded at King's Park was 0.7. The intensity of UV radiation was low.

Please be reminded that:

The Fire Danger Warning is Red and the fire risk is extreme.

The air temperatures at other places were:

King's Park 17 degrees;
Wong Chuk Hang 18 degrees;
Ta Kwu Ling 19 degrees;
Lau Fau Shan 18 degrees;
Tai Po 18 degrees;
Sha Tin 18 degrees;
Tuen Mun 19 degrees;
Tseung Kwan O 17 degrees;
Sai Kung 17 degrees;
Cheung Chau 18 degrees;
Chek Lap Kok 19 degrees;
Tsing Yi 18 degrees;
Shek Kong 20 degrees;
Tsuen Wan Ho Koon 18 degrees;
Tsuen Wan Shing Mun Valley 19 degrees;
Hong Kong Park 18 degrees;
Shau Kei Wan 16 degrees;
Kowloon City 17 degrees;
Happy Valley 18 degrees;
Wong Tai Sin 18 degrees;
Stanley 17 degrees;
Kwun Tong 17 degrees;
Sham Shui Po 19 degrees;
Kai Tak Runway Park 17 degrees;
Yuen Long Park 19 degrees;
Tai Mei Tuk 17 degrees.


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


Climatological Information for 23 Jan

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 16:45 HKT 23/Jan/2019

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

A dry northeast monsoon is affecting southern China. Locally, the relative humidity over most parts of the territory stayed around 50 per cent in the afternoon.

Weather forecast for tonight and tomorrow

Fine and dry. Cool tomorrow morning. The minimum temperature will be about 15 degrees in the urban areas, and a few degrees lower in the New Territories. The maximum temperature will be around 19 degrees. Moderate east to northeasterly winds, occasionally fresh offshore tomorrow.

Outlook : Fine and dry in the following couple of days with rather large temperature difference between day and night over the New Territories. Windier during the weekend.


(The above forecast period is valid up to 23:59 HKT tomorrow, 24/01/2019; 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 09:00 HKT 23/Jan/2019

GALE WARNING AREA: SCARBOROUGH.

GENERAL SITUATION AT 222100 UTC:
THE NORTHEAST MONSOON IS AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 230100 UTC:

HONG KONG= NE 4, OCNL 5. FINE. SEA UP TO 2 M. TEMP 19-15 C. =
KWANGTUNG= NE 4-5, 6 IN E. FINE. SEA UP TO 2 M, 3 M IN E. SWELL NE 2 M. =
TAIWAN STRAIT= NE 5-6. FINE. SEA 2-3 M. SWELL NE 2 M. =
BASHI= NE 6-7. CLD. SEA 3-4 M. SWELL NE 2 M. =
PRATAS= NE 5-6, OCNL 7. FINE. SEA UP TO 4 M. SWELL NE 2 M. =
BALINTANG= NE 6-7. CLD. SEA 3-4 M. SWELL NE 2 M. =
SCARBOROUGH= NE 6-7, OCNL 8. FINE. SEA UP TO 6 M. SWELL NE 2 M. =
PARACEL= NE 5-6. FINE. SEA 2-3 M. SWELL NE 2 M. =
TONKIN= NE 4-5. CLD. SEA UP TO 2 M. =
DANANG= NE 4-5. FINE. 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

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

    Bulletin issued at 16:30 HKT 23/Jan/2019

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 4:30 p.m. on 23 January 2019

    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 to northeast force 4 to 5, up to force 6 later.
    Moderate seas, becoming rough later.

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

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

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

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

    Waglan Island Wind east-northeast force 3
      Visibility 8 Kilometres

    Shantou Wind east-northeast force 1
      Visibility 14 Kilometres

    Huangmaozhou Wind east-northeast force 2

    Macau Wind north-northeast force 2
      Visibility 9 Kilometres

    Xisha Wind northeast force 3
      Visibility 24 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/JAN/2019
    (Next update at 01:30 HKT 24/JAN/2019)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     NIL.
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:  080/5-10
       OFFSHORE:  080/10-15                            18-13
   B.   2000 FT:  120/10-15                            10
   C.   5000 FT:  350/15                               10
   D.  10000 FT:  320/25                               0
   E.  18000 FT:  290/40                               MS7
   F.  24000 FT:  260/70                               MS11
   G.  30000 FT:  270/65                               MS26
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL
   I. WEATHER       : 
      FINE. LOCALIZED HAZE.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 3500 FT.
   K. VISIBILITY    : 7 KM. TEMPO 4000M IN HAZE.
   L. 0 DEG. C LEVEL: 10000 FT      10 DEG. C LEVEL(S) : 2000,4400,5000 FT
   M. TURBULENCE    : 
   N. SEA STATE     : 1.0-1.5 M     SEA TEMPERATURE    : 17 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE EAST TO NORTHEASTERLY WINDS, FRESH
     OFFSHORE. FINE. LOCALIZED 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.

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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)

    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/Jan/2019 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     19.1 C
Minimum Air Temperature                     13.1 C
Grass Minimum Temperature                   11.7 C
Relative Humidity                        41 - 68 Percent
Rainfall                                       0 mm 
Total rainfall since 1st January             4.7 mm
Against an average of                       14.8 mm

Other Stations                Min                  Max
King's Park                  12.0 C               19.5 C
Wong Chuk Hang               12.6 C               19.6 C
Ta Kwu Ling                   8.1 C               19.2 C
Lau Fau Shan                 10.8 C               18.5 C
Tai Po                       11.2 C               19.2 C
Sha Tin                      11.7 C               19.2 C
Tuen Mun                     12.0 C               19.8 C
Tseung Kwan O                10.4 C               20.7 C
Sai Kung                     12.1 C               18.3 C
Cheung Chau                  11.8 C               21.6 C
Chek Lap Kok                 12.6 C               19.0 C
Tsing Yi                     12.5 C               20.6 C
Shek Kong                    10.2 C               19.7 C
Tsuen Wan Ho Koon            10.6 C               18.1 C
Tsuen Wan Shing Mun Valley   11.6 C               20.8 C
Hong Kong Park               13.2 C               19.9 C
Shau Kei Wan                 12.0 C               19.8 C
Kowloon City                 11.6 C               19.8 C
Happy Valley                 13.1 C               20.3 C
Wong Tai Sin                 12.1 C               20.4 C
Stanley                      12.6 C               19.1 C
Kwun Tong                    11.3 C               20.5 C
Sham Shui Po                 12.5 C               21.2 C
Kai Tak Runway Park          12.8 C               21.2 C
Yuen Long Park               11.0 C               20.0 C
Tai Mei Tuk               10.8 C               19.8 C

Duration of sunshine (King's Park):              10.0 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 6.
 

Yesterday's (22 Jan 2019) 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                         0.12
Sha Tau Kok                         0.10
Kwun Tong                           0.13
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 22 Jan
     2003copy right image | Important notices | Privacy policy Last revision date: <23 Jan 2019> 

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