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Bulletin issued at 00:02 HKT 13/Feb/2018

At midnight at the Hong Kong Observatory the air temperature was 15 degrees Celsius and the relative humidity 65 per cent.

Please be reminded that:

The Cold Weather Warning is now in force. Cold weather might cause adverse health effects. Members of the public should take care to keep warm.

The air temperatures at other places were:

King's Park 13 degrees;
Wong Chuk Hang 11 degrees;
Ta Kwu Ling 8 degrees;
Lau Fau Shan 12 degrees;
Tai Po 13 degrees;
Sha Tin 11 degrees;
Tuen Mun 13 degrees;
Tseung Kwan O 10 degrees;
Sai Kung 11 degrees;
Cheung Chau 13 degrees;
Chek Lap Kok 15 degrees;
Tsing Yi 12 degrees;
Shek Kong 10 degrees;
Tsuen Wan Ho Koon 11 degrees;
Tsuen Wan Shing Mun Valley 10 degrees;
Hong Kong Park 13 degrees;
Shau Kei Wan 13 degrees;
Kowloon City 13 degrees;
Happy Valley 12 degrees;
Wong Tai Sin 13 degrees;
Stanley 13 degrees;
Kwun Tong 13 degrees;
Sham Shui Po 13 degrees;
Kai Tak Runway Park 15 degrees;
Yuen Long Park 11 degrees;
Tai Mei Tuk 12 degrees.


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


Climatological Information for 13 Feb

Regional Weather in Hong Kong

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Hong Kong Climatology


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Bulletin updated at 00:00 HKT 13/Feb/2018

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

The winter monsoon continued to affect southern China yesterday. Locally, the weather was cold yesterday morning with temperatures over the territory generally fell to around 12 degrees or below. It was fine and dry during the day. The monsoon is expected to be replaced by a humid easterly airstream. Temperatures over the coast of Guangdong will rise progressively in the next couple of days. The weather will be mild and humid with fog over the Lunar New Year holidays.

At 11 p.m. last night, Tropical Depression Sanba was centred about 1110 kilometres southeast of Manila. It is forecast to move west-northwest at about 25 kilometres per hour towards the southern part of the Philippines.

Weather forecast for Hong Kong (Tuesday, 13 Feb 2018)

It will be fine. The minimum temperature in the morning will be about 13 degrees in the urban areas, and a few degrees lower in the New Territories. Dry with a maximum temperature of around 18 degrees during the day. Moderate east to northeasterly winds, fresh at times.

Outlook : Temperatures rising progressively in the following couple of days. The weather will be mild and humid with fog over the Lunar New Year holidays.


(The above forecast period is valid up to 23:59 HKT today, 13/02/2018; 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 12/Feb/2018

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

GENERAL SITUATION AT 120900 UTC:
AN INTENSE NORTHEAST MONSOON IS AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 121300 UTC:

HONG KONG= E TO NE 4-5. FINE. SEA UP TO 2 M. SWELL E TO NE UP TO 2 M. TEMP 13-18 C. =
KWANGTUNG= NE 6-7. FINE. SEA 3-4 M. SWELL NE 2-3 M. =
TAIWAN STRAIT= NE 7-8. FINE. SEA 4-6 M. SWELL N TO NE 2-3 M. =
BASHI= E TO NE 7-8. RAIN PATCHES. SEA 4-6 M. SWELL NE 3-4 M. =
PRATAS= E TO NE 7-8. RAIN PATCHES. SEA 4-6 M. SWELL NE 3-4 M. =
BALINTANG= E TO NE 7-8. RAIN PATCHES. SEA 4-6 M. SWELL NE 3-4 M. =
SCARBOROUGH= N TO NE 7-8. RAIN PATCHES. SEA 4-6 M. SWELL NE 2-3 M. =
PARACEL= NE 6-7, OCNL 8. CLD. SEA UP TO 6 M. SWELL NE 2-3 M. =
TONKIN= N TO NE 5-6. CLD. SEA 2-3 M. SWELL NE UP TO 2 M. =
DANANG= NE 6-7. CLD. SEA 3-4 M. 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

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    Bulletin issued at 23:30 HKT 12/Feb/2018

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 11:30 p.m. on 12 February 2018

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

    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.
    Moderate seas.

    Nan'ao:
    Northeast force 6 to 7, occasionally force 8 at first.
    Rough to very rough seas.

    Shanwei, South of Hong Kong and Shangchuan Dao:
    Northeast force 6 to 7.
    Rough seas.

    Outlook for the next 48 hours
    Easterly winds of force 4 to 5, up to force 6 at first. Fog patches later.

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

    Waglan Island Wind north force 3
      Visibility 10 Kilometres

    Shantou Wind east-northeast force 2
      Visibility 17 Kilometres

    Dongsha Wind northeast force 4
      Visibility 10 Kilometres

    Huangmaozhou Wind north-northeast force 2

    Macau Wind north force 2
      Visibility 12 Kilometres

    Xisha Wind northeast force 3
      Visibility 15 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 12/FEB/2018
    (Next update at 01:30 HKT 13/FEB/2018)
    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:  050/10
       OFFSHORE:  050/15 OCNL 20                       18-13
   B.   2000 FT:  040/15-20                            10
   C.   5000 FT:  020/10                               6
   D.  10000 FT:  290/25                               2
   E.  18000 FT:  270/55                               MS4
   F.  24000 FT:  280/60                               MS18
   G.  30000 FT:  270/80                               MS30
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL
   I. WEATHER       : 
      FINE.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 4500 FT
   K. VISIBILITY    : 8 KM.
   L. 0 DEG. C LEVEL: 9500 FT       10 DEG. C LEVEL(S) : 2000 FT
   M. TURBULENCE    : MOD OFFSHORE AND NEAR HILLS
   N. SEA STATE     : 2.0-2.5 M     SEA TEMPERATURE    : 16 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE TO FRESH EAST TO 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.

    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 10:30 HKT on 10 Feb 18

    VHHK SIGMET 1 VALID 100230/100630 VHHH- VHHK HONG KONG FIR SEV TURB OBS WI N2000 E11636 - N1742 E11448 - N2000 E11448 - N2000 E11636 FL300/400 MOV E 05KT 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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     2003copy right image | Important notices | Privacy policy Last revision date: <12 Feb 2018> 
    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 13/Feb/2018 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     19.0 C
Minimum Air Temperature                     11.9 C
Grass Minimum Temperature                   10.7 C
Relative Humidity                        46 - 79 Percent
Rainfall                                     0.0 mm 
Total rainfall since 1st January            62.2 mm
Against an average of                       47.5 mm

Other Stations                Min                  Max
King's Park                  11.1 C               19.6 C
Wong Chuk Hang               10.9 C               19.0 C
Ta Kwu Ling                   7.8 C               20.4 C
Tai Po                        9.9 C               18.8 C
Sha Tin                      10.3 C               19.2 C
Tuen Mun                     11.4 C               19.5 C
Tseung Kwan O                 9.6 C               20.0 C
Sai Kung                     10.5 C               17.2 C
Cheung Chau                  11.1 C               19.4 C
Chek Lap Kok                 11.9 C               18.4 C
Tsing Yi                     11.5 C               19.0 C
Shek Kong                    10.1 C               21.0 C
Tsuen Wan Ho Koon             9.0 C               19.2 C
Tsuen Wan Shing Mun Valley   10.4 C               20.8 C
Hong Kong Park               11.5 C               18.3 C
Shau Kei Wan                 10.4 C               18.6 C
Kowloon City                 10.4 C               20.3 C
Happy Valley                 11.5 C               20.3 C
Wong Tai Sin                 10.2 C               20.0 C
Stanley                      11.2 C               17.7 C
Kwun Tong                    10.4 C               20.0 C
Sham Shui Po                 11.0 C               20.0 C
Kai Tak Runway Park          11.9 C               18.7 C
Yuen Long Park               10.5 C               20.5 C
Tai Mei Tuk                9.4 C               20.0 C

Duration of sunshine (King's Park):              10.3 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.
Sea surface temperature (Waglan Island):        16.1 C 

Yesterday's (12 Feb 2018) average ambient gamma radiation
dose rate taken outdoors in Hong Kong ranged from 0.08 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                           0.08
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                           0.12
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 12 Feb
     2003copy right image | Important notices | Privacy policy Last revision date: <13 Feb 2018> 

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