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Bulletin issued at 05:02 HKT 14/Apr/2018

At 5 a.m. at the Hong Kong Observatory the air temperature was 25 degrees Celsius and the relative humidity 86 per cent.

The air temperatures at other places were:

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


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


Climatological Information for 14 Apr

Regional Weather in Hong Kong

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Hong Kong Climatology


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Bulletin updated at 04:45 HKT 14/Apr/2018

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

A southerly airstream is affecting the coastal areas of Guangdong. Besides, a cold front over the northern part of southern China is moving southwards gradually. It is expected to move across the south China coast tomorrow morning.

Weather forecast for today

Mainly cloudy. Coastal mist in the morning. Hot with sunny periods during the day. The maximum temperature will be around 30 degrees. There will be a few showers at night. Moderate southerly winds.

Outlook : Cooler with showers and a few thunderstorms in the next couple of days.


(The above forecast period is valid up to 23:59 HKT today, 14/04/2018; 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 13/Apr/2018

N0 WARNING.

GENERAL SITUATION AT 130900 UTC:
A SOUTHERLY AIRSTREAM IS AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 131300 UTC:

HONG KONG= S 4. DOWN TO 2000 M IN MIST PATCHES. ISOL SHOWERS. TEMP 25-30 C. =
KWANGTUNG= S TO SE 4-5. DOWN TO 2000 M IN MIST OR RAIN PATCHES. SEA UP TO 2 M. =
TAIWAN STRAIT= S 4-5, OCNL 6. DOWN TO 500 M IN FOG OR RAIN PATCHES. SEA UP TO 3 M. =
BASHI= SE 4-5, OCNL 6. FINE. SEA UP TO 3 M. =
PRATAS= SE 4-5. FINE. SEA UP TO 2 M. =
BALINTANG= SE 4-5, OCNL 6. FINE. SEA UP TO 3 M. =
SCARBOROUGH= E TO SE 4-5. FINE. SEA UP TO 2 M. =
PARACEL= S TO SE 4-5, OCNL 6. FINE. SEA UP TO 3 M. =
TONKIN= S 5-6, N 5-6 LATER. DOWN TO 2000 M IN MIST OR RAIN PATCHES. SEA 2-3 M. =
DANANG= S TO SE 4-5, OCNL 6. DOWN TO 2000 M IN MIST OR LGT RAIN PATCHES. SEA UP TO 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
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    • 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 05:30 HKT 14/Apr/2018

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 5:30 a.m. on 14 April 2018

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

    Weather Situation:
    A southerly airstream is affecting the south China coastal waters. Besides, a cold front over the northern part of southern China is moving southwards gradually. It is expected to move across the south China coastal waters tomorrow morning.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    South force 4, becoming north force 4 to 5 later.
    Mist patches. Isolated showers.
    Moderate seas.

    Nan'ao and Shanwei:
    South to southeast force 4, becoming north to northeast force 5 to 6 later.
    Moderate seas, becoming rough later.

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

    Outlook for the next 48 hours
    Northeasterly winds of force 6, occasionally force 7. Isolated showers and thunderstorms.

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

    Waglan Island Wind variable force 1
      Visibility 7 Kilometres

    Shantou Wind south-southwest force 1
      Visibility 16 Kilometres

    Huangmaozhou Wind south-southeast force 2

    Macau Wind south-southeast force 2
      Visibility 7 Kilometres

    Xisha Wind south-southeast force 2
      Visibility 18 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 01:30 HKT 14/APR/2018
    (Next update at 9:00-9:30 HKT 14/APR/2018)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     NIL
II.  SYNOPSIS OF THE WEATHER SITUATION :
     A SOUTHERLY AIRSTREAM IS AFFECTING THE SOUTH
     CHINA COASTAL AREAS.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 0200 TO 1200 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  170/10                               25-29
   B.   2000 FT:  180/15-20                            20
   C.   5000 FT:  220/20                               19
   D.  10000 FT:  250/20                               11
   E.  18000 FT:  280/35                               MS7
   F.  24000 FT:  280/35                               MS17
   G.  30000 FT:  290/55                               MS32
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      MAINLY CLOUDY. SUNNY PERIODS DURING THE DAY.
      LOCALISED MIST IN THE MORNING.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 800 FT SCT 2500 FT
   K. VISIBILITY    : 10 KM. TEMPO 4000M IN MIST
   L. 0 DEG. C LEVEL: 15500 FT      10 DEG. C LEVEL(S) : 10800 FT
   M. TURBULENCE    : MOD NEAR HILLS
   N. SEA STATE     : 0.5-1.0 M     SEA TEMPERATURE    : 23 DEG
IV.  FURTHER OUTLOOK: 
     LIGHT TO MODERATE SOUTHERLY WINDS. SUNNY
     PERIODS. A FEW SHOWERS AT NIGHT=

    ===================================================================
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 14:15 HKT on 07 Apr 18

    VHHK SIGMET 1 VALID 070615/071015 VHHH- VHHK HONG KONG FIR SEV ICE OBS N OF N2030 AND E OF E11230 FL140/200 MOV E 10KT 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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    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 14/Apr/2018 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     30.6 C
Minimum Air Temperature                     24.6 C
Grass Minimum Temperature                   23.1 C
Relative Humidity                        63 - 90 Percent
Rainfall                                      TRACE 
Total rainfall since 1st January            89.4 mm
Against an average of                      244.0 mm

Other Stations                Min                  Max
King's Park                  23.9 C               30.2 C
Wong Chuk Hang               24.2 C               27.9 C
Ta Kwu Ling                  24.2 C               30.8 C
Lau Fau Shan                 24.3 C               29.8 C
Tai Po                       24.2 C               29.4 C
Sha Tin                      24.5 C               30.4 C
Tuen Mun                     24.2 C               29.0 C
Tseung Kwan O                24.0 C               28.6 C
Sai Kung                     23.9 C               26.2 C
Cheung Chau                  23.3 C               28.5 C
Chek Lap Kok                 25.0 C               30.0 C
Tsing Yi                     25.1 C               30.3 C
Shek Kong                    25.4 C               31.1 C
Tsuen Wan Ho Koon            23.6 C               28.4 C
Tsuen Wan Shing Mun Valley   24.4 C               29.9 C
Hong Kong Park               24.5 C               29.5 C
Shau Kei Wan                 23.3 C               27.2 C
Kowloon City                 23.8 C               29.8 C
Happy Valley                 24.7 C               29.7 C
Wong Tai Sin                 24.3 C               29.3 C
Stanley                      23.6 C               28.3 C
Kwun Tong                    24.0 C               29.5 C
Sham Shui Po                 24.6 C               29.9 C
Kai Tak Runway Park          23.7 C               27.0 C
Yuen Long Park               24.5 C               30.4 C
Tai Mei Tuk               23.6 C               29.1 C

Duration of sunshine (King's Park):              6.0 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.
Sea surface temperature (Waglan Island):        23.8 C 

Yesterday's (13 Apr 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                             0.08
Kat O                               0.10
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                        0.14

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 13 Apr
     2003copy right image | Important notices | Privacy policy Last revision date: <14 Apr 2018> 

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