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Bulletin issued at 15:02 HKT 15/Apr/2017

At 3 p.m. at the Hong Kong Observatory the air temperature was 26 degrees Celsius and the relative humidity 77 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 26 degrees;
Wong Chuk Hang 27 degrees;
Ta Kwu Ling 28 degrees;
Lau Fau Shan 28 degrees;
Tai Po 25 degrees;
Sha Tin 27 degrees;
Tuen Mun 27 degrees;
Tseung Kwan O 25 degrees;
Sai Kung 25 degrees;
Cheung Chau 25 degrees;
Chek Lap Kok 28 degrees;
Tsing Yi 28 degrees;
Shek Kong 29 degrees;
Tsuen Wan Ho Koon 26 degrees;
Tsuen Wan Shing Mun Valley 29 degrees;
Hong Kong Park 27 degrees;
Shau Kei Wan 24 degrees;
Kowloon City 27 degrees;
Happy Valley 27 degrees;
Wong Tai Sin 27 degrees;
Stanley 24 degrees;
Kwun Tong 26 degrees;
Sham Shui Po 28 degrees;
Kai Tak Runway Park 25 degrees;
Yuen Long Park 29 degrees;
Tai Mei Tuk 26 degrees.


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


Climatological Information for 15 Apr

Regional Weather in Hong Kong

Information on Tropical Cyclones

Hong Kong Climatology


Local Weather Forecast
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Bulletin updated at 14:45 HKT 15/Apr/2017

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

A broad band of clouds is covering Guangdong.

At noon, the tropical depression in the vicinity of the Philippines was centred about 690 kilometres east-southeast of Manila. It is forecast to move west-northwest at about 20 kilometres per hour towards the central part of the Philippines.

Weather forecast for this afternoon and tonight

Mainly cloudy with one or two showers. Sunny intervals in the afternoon. There will be coastal mist tonight. Light to moderate southeasterly winds.

Outlook : Warm with sunny periods in the next couple of days. There will be coastal fog in the morning.


(The above forecast period is valid up to 23:59 HKT today, 15/04/2017; Regular update at : around 45 minutes past each hour, 16:15 HKT and 23:15 HKT)

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MARINE FORECAST
Traditional Chinese Simplified Chinese

Marine Forecast

Weather Information for the Marine Community

Bulletin issued at 09:00 HKT 15/Apr/2017

N0 WARNING.

GENERAL SITUATION AT 142100 UTC:
A SOUTHEASTERLY AIRSTREAM IS GENERALLY AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 150100 UTC:

HONG KONG= SE 3-4. DOWN TO 500 M IN FOG OR RAIN PATCHES. TEMP 27-23 C. =
KWANGTUNG= E TO SE 3-4. DOWN TO 500 M IN FOG OR RAIN PATCHES. =
TAIWAN STRAIT= E TO SE 4-5. CLD. SEA UP TO 2 M. SWELL NE UP TO 2 M. =
BASHI= E TO SE 4-5, OCNL 6. CLD. SEA UP TO 3 M. SWELL E UP TO 2 M. =
PRATAS= E TO NE 4-5. CLD. SEA UP TO 2 M. =
BALINTANG= E TO SE 4-5, OCNL 6. CLD. SEA UP TO 3 M. SWELL E UP TO 2 M. =
SCARBOROUGH= NE 3-4. CLD. =
PARACEL= SE 3-4. DOWN TO 500 M IN FOG OR RAIN PATCHES IN N. =
TONKIN= SE 3-4, OCNL 5. DOWN TO 500 M IN FOG OR RAIN PATCHES. SEA UP TO 2 M. =
DANANG= SE 3-4, OCNL 5. DOWN TO 500 M IN FOG OR RAIN PATCHES. 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
  • 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 15/Apr/2017

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 12:30 p.m. on 15 April 2017

    Warnings:
    Fog in all areas.

    Weather Situation:
    A southeasterly airstream is generally affecting the south China coastal waters.

    At noon, the tropical depression in the vicinity of the Philippines with maximum sustained winds of about 45 kilometres per hour near its centre was located at 11.2 degrees north, 126.4 degrees east. It is forecast to move west-northwest at about 20 kilometres per hour towards the central part of the Philippines.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    Southeast force 3 to 4.
    A few showers. Fog patches.
    Slight to moderate seas.

    Nan'ao and Shanwei:
    East to southeast force 3 to 4.
    Fog patches.
    Slight to moderate seas.

    South of Hong Kong and Shangchuan Dao:
    Southeast force 3 to 4.
    Fog patches.
    Slight to moderate seas.

    Outlook for the next 48 hours
    Southeasterly winds of force 4, south to southwesterly winds of force 4 later. Fog patches.

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

    Waglan Island Wind east-northeast force 3
      Visibility 13 Kilometres

    Shantou Wind southwest force 1
      Visibility 8 Kilometres

    Dongsha Wind east force 2
      Visibility 10 Kilometres

    Huangmaozhou Wind east-northeast force 4

    Macau Wind east-southeast force 2
      Visibility 11 Kilometres

    Xisha Wind east-southeast force 2
      Visibility 30 Kilometres

  • Explanation of Seas or Sea Waves
  • Explanation of Swells
  • Descriptive Terms of Wind Speeds
  • Visibility Readings in Hong Kong Waters
  • Map showing forecast areas
  • Tidal Information

    • WEATHER FORECAST FOR LOCAL AVIATION
    Traditional Chinese Simplified Chinese

    Weather Forecast for Local Aviation

    Bulletin issued at 09:30 HKT 15/APR/2017
    (Next update at 17:30 HKT 15/APR/2017)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     NIL.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     AN EASTERLY AIRSTREAM IS GENERALLY AFFECTING THE
     COASTAL AREAS OF GUANGDONG.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1000 TO 2000 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  120/5-10
       OFFSHORE:  120/10-15                            23-28
   B.   2000 FT:  180/15                               20
   C.   5000 FT:  240/15                               16
   D.  10000 FT:  250/15                               10
   E.  18000 FT:  250/30                               MS5
   F.  24000 FT:  260/40                               MS15
   G.  30000 FT:  270/55                               MS28
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      MAINLY CLOUDY WITH A FEW SHOWERS.  SUNNY
      INTERVALS DURING THE DAY.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1500 FT  SCT 4000 FT.
   K. VISIBILITY    : 7 KM.  TEMPO 4000 M IN SHOWERS.
   L. 0 DEG. C LEVEL: 15500 FT
      10 DEG. C LEVEL(S) : 8200, 10000 FT
   M. TURBULENCE    : MOD NEAR HILLS.
   N. SEA STATE     : 1.0-1.5 M     SEA TEMPERATURE    : 22 DEG
IV.  FURTHER OUTLOOK: 
     LIGHT TO MODERATE SOUTHEASTERLY WINDS.  MAINLY
     CLOUDY.  LOCALIZED FOG/MIST.=

    ===================================================================
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 19:13 HKT on 13 Apr 17

    VHHK SIGMET 2 VALID 130715/131115 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N1842 E11212 - N1930 E11130 - N2100 E11130 - N2124 E11348 - N1936 E11436 - N1842 E11212 TOP FL380 MOV E 10KT NC= VHHK SIGMET 3 VALID 131115/131515 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N1730 E11318 - N2000 E11230 - N2030 E11518 - N1900 E11512 - N1748 E11400 - N1730 E11318 TOP FL380 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 15/Apr/2017 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     24.7 C
Minimum Air Temperature                     19.9 C
Grass Minimum Temperature                   20.2 C
Relative Humidity                        69 - 87 Percent
Rainfall                                       0 mm 
Total rainfall since 1st January            98.3 mm
Against an average of                      249.7 mm

Other Stations                Min                  Max
King's Park                  19.2 C               25.0 C
Wong Chuk Hang               19.4 C               23.9 C
Ta Kwu Ling                  18.5 C               24.9 C
Lau Fau Shan                 18.4 C               23.8 C
Tai Po                       19.1 C               23.4 C
Sha Tin                      19.5 C               25.3 C
Tuen Mun                     19.3 C               24.5 C
Tseung Kwan O                18.9 C               24.8 C
Sai Kung                     19.4 C               24.4 C
Cheung Chau                  19.1 C               23.9 C
Chek Lap Kok                 20.2 C               25.3 C
Tsing Yi                     20.0 C               25.1 C
Shek Kong                    19.1 C               25.4 C
Tsuen Wan Ho Koon            18.1 C               23.5 C
Tsuen Wan Shing Mun Valley   19.4 C               25.7 C
Hong Kong Park               19.8 C               24.5 C
Shau Kei Wan                 19.3 C               23.8 C
Kowloon City                 19.1 C               24.5 C
Happy Valley                 19.9 C               26.0 C
Wong Tai Sin                 19.4 C               25.4 C
Stanley                      19.7 C               23.6 C
Kwun Tong                    19.3 C               24.8 C
Sham Shui Po                 19.9 C               25.5 C
Kai Tak Runway Park          20.1 C               24.3 C
Yuen Long Park               19.0 C               25.0 C
Tai Mei Tuk               18.7 C               24.5 C

Duration of sunshine (King's Park):              4.0 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 7.
Sea surface temperature (Waglan Island):        22.0 C 

Yesterday's (14 Apr 2017) average ambient gamma radiation
dose rate taken outdoors in Hong Kong ranged from 0.08 to
0.14 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                               0.10
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                         0.14
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 during
the period 1987-2016, the background ambient gamma radiation
levels may vary between 0.06 and 0.30 microsievert per hour.

    2. The extent of health effects to a person as a result of
exposure to radiation is expressed by a physical quantity
called equivalent dose, in unit of sievert.  Protective
action may be required if there is an increase in the
ambient gamma dose rate above background such that the total
additional dose is expected to exceed 5000 microsieverts in
a relatively short period of time. For example, a dose of
5000 microsieverts may be reached when the ambient gamma
dose rate is 1000 microsieverts per hour (several thousand
times above background) and lasts for 5 hours.

    3. The readings of ambient gamma radiation level from
instrument are expressed in unit of gray, which is
numerically equal to the gamma dose expressed in sievert.
    Climatological Information for 14 Apr
     2003copy right image | Important notices | Privacy policy Last revision date: <15 Apr 2017> 

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