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Bulletin issued at 16:02 HKT 25/Jan/2019

At 4 p.m. at the Hong Kong Observatory the air temperature was 22 degrees Celsius and the relative humidity 51 per cent.
During the past hour the mean UV Index recorded at King's Park was 2. The intensity of UV radiation was low.

The air temperatures at other places were:

King's Park 22 degrees;
Wong Chuk Hang 22 degrees;
Ta Kwu Ling 24 degrees;
Lau Fau Shan 20 degrees;
Tai Po 21 degrees;
Sha Tin 23 degrees;
Tuen Mun 22 degrees;
Tseung Kwan O 21 degrees;
Sai Kung 19 degrees;
Cheung Chau 20 degrees;
Chek Lap Kok 22 degrees;
Tsing Yi 23 degrees;
Shek Kong 24 degrees;
Tsuen Wan Ho Koon 22 degrees;
Tsuen Wan Shing Mun Valley 23 degrees;
Hong Kong Park 22 degrees;
Shau Kei Wan 19 degrees;
Kowloon City 23 degrees;
Happy Valley 23 degrees;
Wong Tai Sin 24 degrees;
Stanley 21 degrees;
Kwun Tong 23 degrees;
Sham Shui Po 22 degrees;
Kai Tak Runway Park 19 degrees;
Yuen Long Park 25 degrees;
Tai Mei Tuk 22 degrees.


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


Climatological Information for 25 Jan

Regional Weather in Hong Kong

Information on Tropical Cyclones

Hong Kong Climatology


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Bulletin updated at 16:15 HKT 25/Jan/2019

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

A dry northeast monsoon is bringing fine weather to southeastern China. Meanwhile, pressure is rising over the northern part of Guangdong. A replenishment of the monsoon will reach the coastal areas overnight.

Weather forecast for tonight and tomorrow

Fine and dry. Cool tomorrow morning. The minimum temperature will be about 16 degrees in the urban areas, and a couple of degrees lower in the New Territories. The maximum temperature will be around 20 degrees during the day. Light winds, moderate northeasterly winds tomorrow morning, becoming fresh easterlies later.

Outlook : Mainly fine in the following couple of days. Windier on Sunday.


(The above forecast period is valid up to 23:59 HKT tomorrow, 26/01/2019; 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 25/Jan/2019

N0 WARNING.

GENERAL SITUATION AT 242100 UTC:
THE NORTHEAST MONSOON IS AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 250100 UTC:

HONG KONG= E TO NE 4-5. DOWN TO 4000 M IN HAZE. SEA UP TO 2 M. TEMP 21-16 C. =
KWANGTUNG= E TO NE 4-5, 6 IN E AT FIRST. FINE. SEA UP TO 2 M, 3 M IN E AT FIRST. SWELL NE 2 M. =
TAIWAN STRAIT= NE 5-6. FINE. SEA 2-3 M. SWELL NE 2 M. =
BASHI= E TO NE 5-6. RAIN PATCHES. SEA 2-3 M. SWELL NE 2 M. =
PRATAS= E TO NE 5-6. CLD. SEA 2-3 M. SWELL NE 2 M. =
BALINTANG= E TO NE 5-6. RAIN PATCHES. SEA 2-3 M. SWELL NE 2 M. =
SCARBOROUGH= NE 5-6. FINE. SEA 2-3 M. SWELL NE 2 M. =
PARACEL= E TO NE 4-5. FINE. SEA UP TO 2 M. SWELL NE 2 M. =
TONKIN= E TO NE 4, OCNL 5. CLD. DOWN TO 4000 M IN MIST PATCHES. =
DANANG= E TO NE 4-5. CLD. 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

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    Bulletin issued at 16:30 HKT 25/Jan/2019

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 4:30 p.m. on 25 January 2019

    Warnings:
    Strong winds in all areas.

    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, becoming force 6 later.
    Moderate seas, becoming rough later.

    Nan'ao and Shanwei:
    East to northeast force 4 to 5, becoming force 6 to 7 later.
    Moderate seas, becoming rough later.

    South of Hong Kong and Shangchuan Dao:
    East to northeast force 4 to 5, becoming force 6 later.
    Moderate seas, becoming rough later.

    Outlook for the next 48 hours
    Easterly winds of force 6 to 7, force 8 in east at first.

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

    Waglan Island Wind east force 1
      Visibility 13 Kilometres

    Shantou Wind east-southeast force 2
      Visibility 16 Kilometres

    Huangmaozhou Wind east force 4

    Macau Wind southeast force 2
      Visibility 11 Kilometres

    Xisha Wind east-northeast force 2
      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 12:30 HKT 25/JAN/2019
    (Next update at 17:30 HKT 25/JAN/2019)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     NIL.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     A DRY NORTHEAST MONSOON IS BRINGING FINE WEATHER
     TO SOUTHEASTERN CHINA.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1300 TO 2300 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  VRB/5
       OFFSHORE:  080/10-15                            23-17
   B.   2000 FT:  020/10-15, OCNL 20 LATER             16
   C.   5000 FT:  020/15                               10
   D.  10000 FT:  290/20                               6
   E.  18000 FT:  310/45                               MS4
   F.  24000 FT:  280/50                               MS14
   G.  30000 FT:  260/50                               MS28
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      FINE.  LOCALIZED HAZE IN THE AFTERNOON.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      NO CLOUDS OF HEIGHT AT OR BELOW 10000 FT.
   K. VISIBILITY    : 7 KM.  TEMPO 4000 M IN HAZE.
   L. 0 DEG. C LEVEL: 17000 FT      10 DEG. C LEVEL(S) : 5000 FT
   M. TURBULENCE    : MOD NEAR HILLS.
   N. SEA STATE     : 1.5 M         SEA TEMPERATURE    : 18 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE NORTHEASTERLY WINDS.  FINE.=

    ===================================================================
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 25/Jan/2019 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     19.6 C
Minimum Air Temperature                     15.0 C
Grass Minimum Temperature                   12.0 C
Relative Humidity                        49 - 83 Percent
Rainfall                                       0 mm 
Total rainfall since 1st January             4.7 mm
Against an average of                       18.6 mm

Other Stations                Min                  Max
King's Park                  13.6 C               20.3 C
Wong Chuk Hang               12.0 C               21.0 C
Ta Kwu Ling                   8.9 C               22.8 C
Lau Fau Shan                 11.3 C               19.5 C
Tai Po                       12.0 C               19.2 C
Sha Tin                      11.0 C               20.4 C
Tuen Mun                     12.1 C               22.4 C
Tseung Kwan O                11.7 C               19.8 C
Sai Kung                     12.6 C               18.5 C
Cheung Chau                  13.1 C               22.8 C
Chek Lap Kok                 14.2 C               21.0 C
Tsing Yi                     13.3 C               21.8 C
Shek Kong                    10.2 C               22.3 C
Tsuen Wan Ho Koon            10.8 C               22.1 C
Tsuen Wan Shing Mun Valley   11.1 C               22.1 C
Hong Kong Park               14.3 C               20.9 C
Shau Kei Wan                 13.9 C               19.0 C
Kowloon City                 13.1 C               21.8 C
Happy Valley                 13.2 C               20.8 C
Wong Tai Sin                 13.9 C               21.1 C
Stanley                      14.1 C               19.3 C
Kwun Tong                    13.8 C               19.4 C
Sham Shui Po                 13.3 C               21.6 C
Kai Tak Runway Park          14.8 C               18.6 C
Yuen Long Park               10.0 C               22.8 C
Tai Mei Tuk               12.9 C               22.0 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 (24 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 24 Jan
     2003copy right image | Important notices | Privacy policy Last revision date: <25 Jan 2019> 

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