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Bulletin issued at 13:02 HKT 17/Jan/2019

At 1 p.m. at the Hong Kong Observatory the air temperature was 19 degrees Celsius and the relative humidity 63 per cent.
During the past hour the mean UV Index recorded at King's Park was 5. The intensity of UV radiation was moderate.

The air temperatures at other places were:

King's Park 20 degrees;
Wong Chuk Hang 19 degrees;
Ta Kwu Ling 19 degrees;
Lau Fau Shan 17 degrees;
Tai Po 17 degrees;
Sha Tin 18 degrees;
Tuen Mun 19 degrees;
Tseung Kwan O 20 degrees;
Sai Kung 17 degrees;
Cheung Chau 21 degrees;
Chek Lap Kok 17 degrees;
Tsing Yi 20 degrees;
Shek Kong 20 degrees;
Tsuen Wan Ho Koon 19 degrees;
Tsuen Wan Shing Mun Valley 20 degrees;
Hong Kong Park 20 degrees;
Shau Kei Wan 19 degrees;
Kowloon City 20 degrees;
Happy Valley 20 degrees;
Wong Tai Sin 20 degrees;
Stanley 18 degrees;
Kwun Tong 19 degrees;
Sham Shui Po 19 degrees;
Kai Tak Runway Park 19 degrees;
Yuen Long Park 20 degrees;
Tai Mei Tuk 22 degrees.


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


Climatological Information for 17 Jan

Regional Weather in Hong Kong

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Hong Kong Climatology


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Bulletin updated at 12:45 HKT 17/Jan/2019

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

The northeast monsoon is affecting Guangdong.

Weather forecast for this afternoon and tonight

Mainly fine. Dry in the afternoon. Moderate north to northeasterly winds.

Outlook : Sunny intervals in the next couple of days. Mild during the day. Becoming cool again early next week.


(The above forecast period is valid up to 23:59 HKT today, 17/01/2019; 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 17/Jan/2019

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

GENERAL SITUATION AT 162100 UTC:
AN INTENSE NORTHEAST MONSOON IS AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 170100 UTC:

HONG KONG= N TO NE 5-6, E 6-7 LATER. LGT RAIN PATCHES. SEA 2-3 M, 3-4 M LATER. SWELL NE 2 M. TEMP 19-15 C. =
KWANGTUNG= E TO NE 6-7, 8 IN E. LGT RAIN PATCHES. SEA 3-4 M, 6 M IN E. SWELL NE 3 M. =
TAIWAN STRAIT= NE 7-8. LGT RAIN PATCHES. SEA 4-6 M. SWELL NE 3 M. =
BASHI= E TO NE 7-8. LGT RAIN PATCHES. SEA 4-6 M. SWELL NE 3 M. =
PRATAS= E TO NE 7-8. LGT RAIN PATCHES. SEA 4-6 M. SWELL NE 3 M. =
BALINTANG= E TO NE 6-7, BEC 8. LGT RAIN PATCHES. SEA 3-4 M, BEC 6 M. SWELL NE 3 M. =
SCARBOROUGH= E TO NE 6-7, BEC 8. FINE. SEA 3-4 M, BEC 6 M. SWELL NE 3 M. =
PARACEL= E TO NE 6-7. LGT RAIN PATCHES. SEA 3-4 M. SWELL NE 3 M. =
TONKIN= N TO NE 5-6. LGT RAIN PATCHES. SEA 2-3 M. SWELL NE UP TO 2 M. =
DANANG= NE 5-6, E 6-7 LATER. LGT RAIN PATCHES. SEA 2-3 M, 3-4 M LATER. SWELL NE 2-3 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 12:30 HKT 17/Jan/2019

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 12:30 p.m. on 17 January 2019

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

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

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    North to northeast force 5 to 6, becoming east force 6 to 7 later.
    A few light rain patches.
    Moderate to rough seas.

    Nan'ao and Shanwei:
    East to northeast force 7 to 8.
    Rough to very rough seas.

    South of Hong Kong and Shangchuan Dao:
    East to northeast force 6 to 7.
    Rough seas.

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

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

    Waglan Island Wind northeast force 3
      Visibility 21 Kilometres

    Shantou Wind east force 2
      Visibility 29 Kilometres

    Dongsha Wind north-northeast force 4
      Visibility 10 Kilometres

    Huangmaozhou Wind northeast force 4

    Macau Wind north force 3
      Visibility 10 Kilometres

    Xisha Wind northeast force 3
      Visibility 20 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 17/JAN/2019
    (Next update at 17:30 HKT 17/JAN/2019)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     STRONG WINDS AND SEV TURB.
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 1300 TO 2300 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  010/10
       OFFSHORE:  010/15-20, OCNL 25                   19-17
   B.   2000 FT:  030/15-20                            15
   C.   5000 FT:  330/10                               11
   D.  10000 FT:  280/20                               2
   E.  18000 FT:  250/50                               MS5
   F.  24000 FT:  250/60                               MS17
   G.  30000 FT:  250/75                               MS28
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL
   I. WEATHER       : 
      SUNNY INTERVALS.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 2500 FT  SCT 3500 FT.
   K. VISIBILITY    : 9 KM.
   L. 0 DEG. C LEVEL: 11500, 13500, 16000 FT  10 DEG. C LEVEL(S) : 5600 FT
   M. TURBULENCE    : MOD TO SEV OFFSHORE.  MOD NEAR HILLS.
   N. SEA STATE     : 2.0-3.0 M     SEA TEMPERATURE    : 19 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE TO FRESH NORTH TO NORTHEASTERLY WINDS.
     MAINLY CLOUDY WITH ONE OR TWO LIGHT 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.

    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 17/Jan/2019 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     19.9 C
Minimum Air Temperature                     15.9 C
Grass Minimum Temperature                   15.8 C
Relative Humidity                        64 - 78 Percent
Rainfall                                       0 mm 
Total rainfall since 1st January             4.4 mm
Against an average of                       11.0 mm

Other Stations                Min                  Max
King's Park                  14.8 C               19.4 C
Wong Chuk Hang               15.4 C               19.8 C
Ta Kwu Ling                  13.9 C               18.6 C
Lau Fau Shan                 13.9 C               17.8 C
Tai Po                       14.5 C               17.9 C
Sha Tin                      14.7 C               18.7 C
Tuen Mun                     15.0 C               19.2 C
Tseung Kwan O                14.5 C               20.7 C
Sai Kung                     14.3 C               18.3 C
Cheung Chau                  14.6 C               20.4 C
Chek Lap Kok                 15.4 C               19.5 C
Tsing Yi                     15.4 C               19.8 C
Shek Kong                    14.5 C               18.8 C
Tsuen Wan Ho Koon            13.8 C               17.8 C
Tsuen Wan Shing Mun Valley   14.7 C               20.1 C
Hong Kong Park               15.7 C               20.5 C
Shau Kei Wan                 14.7 C               21.0 C
Kowloon City                 14.5 C               19.6 C
Happy Valley                 15.7 C               20.2 C
Wong Tai Sin                 15.0 C               19.5 C
Stanley                      15.1 C               19.5 C
Kwun Tong                    14.4 C               19.8 C
Kai Tak Runway Park          15.5 C               21.1 C
Yuen Long Park               14.4 C               19.4 C
Tai Mei Tuk               14.1 C               20.9 C

Duration of sunshine (King's Park):              0.8 H
The mean UV index recorded at King's Park yesterday was 1,
the UV intensity was Low.
The maximum UV index for yesterday was 5.
 

Yesterday's (16 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                          0.10
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 16 Jan
     2003copy right image | Important notices | Privacy policy Last revision date: <17 Jan 2019> 

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