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Bulletin issued at 04:02 HKT 14/Apr/2017

At 4 a.m. at the Hong Kong Observatory the air temperature was 20 degrees Celsius and the relative humidity 82 per cent.

The air temperatures at other places were:

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

Information on Tropical Cyclones

Hong Kong Climatology


Local Weather Forecast
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Local Weather Forecast

Automatic Regional Weather Forecast in Hong Kong & Pearl River Delta Region

Current Weather | Regional Temperature Forecast in HK |  9-day Weather Forecast
UV Index Forecast |  Weather Information for South China Coastal Waters

Bulletin updated at 03:45 HKT 14/Apr/2017

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

A broad band of clouds is covering the coast of Guangdong and the northern part of the South China Sea.

Weather forecast for today

Mainly cloudy. Temperatures will range between 20 and 24 degrees. Moderate easterly winds.

Outlook : Warm in the following couple of days. There will be coastal fog in the morning and at night.


(The above forecast period is valid up to 23:59 HKT today, 14/04/2017; Regular update at : around 45 minutes past each hour, 16:15 HKT and 23:15 HKT)

Information on Tropical Cyclones

Marine Weather Information and Forecast

Weather Information for Aviation

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MARINE FORECAST
Traditional Chinese Simplified Chinese

Marine Forecast

Weather Information for the Marine Community

Bulletin issued at 21:00 HKT 13/Apr/2017

N0 WARNING.

GENERAL SITUATION AT 130900 UTC:
AN EASTERLY AIRSTREAM IS GENERALLY AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 131300 UTC:

HONG KONG= E TO NE 4-5. ISOL SHOWERS AT FIRST. SEA UP TO 2 M. TEMP 20-24 C. =
KWANGTUNG= E TO NE 5-6. DOWN TO 4000 M IN ISOL SHOWERS AND TS AT FIRST. SEA 2-3 M. SWELL NE 2 M. =
TAIWAN STRAIT= NE 5-6. ISOL SHOWERS AT FIRST. SEA 2-3 M. SWELL NE 2-3 M. =
BASHI= E TO NE 5-6. CLD. SEA 2-3 M. SWELL NE 2-3 M. =
PRATAS= E TO NE 5-6. DOWN TO 4000 M IN ISOL SHOWERS AND TS AT FIRST. SEA 2-3 M. SWELL NE 2 M. =
BALINTANG= E TO NE 5-6. CLD. SEA 2-3 M. SWELL NE 2 M. =
SCARBOROUGH= NE 4-5. FINE. SEA UP TO 2 M. SWELL NE 2 M. =
PARACEL= E TO NE 5-6, SE 4 LATER. ISOL SHOWERS AND TS AT FIRST. SEA 2-3 M. SWELL NE 2 M. =
TONKIN= NE 4, SE 3-4 LATER. ISOL SHOWERS AND TS AT FIRST. =
DANANG= NE 4, SE 3-4 LATER. ISOL SHOWERS AND TS AT FIRST. =
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 03:30 HKT 14/Apr/2017

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 3:30 a.m. on 14 April 2017

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

    Weather Situation:
    An easterly airstream 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, Shanwei, South of Hong Kong and Shangchuan Dao:
    East to northeast force 5 to 6.
    Moderate to rough seas.

    Outlook for the next 48 hours
    East to southeasterly winds of force 4. Fog patches.

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

    Waglan Island Wind east force 4
      Visibility 9 Kilometres

    Shantou Wind south-southwest force 1
      Visibility 24 Kilometres

    Dongsha Wind northeast force 4
      Visibility 10 Kilometres

    Huangmaozhou Wind east-northeast force 5

    Macau Wind northeast force 1
      Visibility 3900 Metres in mist

    Xisha Wind east-northeast 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 01:30 HKT 14/APR/2017
    (Next update at 9:00-9:30 HKT 14/APR/2017)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     NIL
II.  SYNOPSIS OF THE WEATHER SITUATION :
     AN EASTERLY 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:  080/10
       OFFSHORE:  080/10-15                            19-25
   B.   2000 FT:  120/10                               15
   C.   5000 FT:  220/10                               14
   D.  10000 FT:  260/15                               9
   E.  18000 FT:  270/35                               MS6
   F.  24000 FT:  250/45                               MS16
   G.  30000 FT:  250/55                               MS31
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      2500 - 3400 FT
   I. WEATHER       : 
      MAINLY CLOUDY. LOCALIZED MIST AT FIRST.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 2000 FT SCT 3500 FT
   K. VISIBILITY    : 8 KM.  TEMPO 4000 M IN MIST.
   L. 0 DEG. C LEVEL: 14500 FT      10 DEG. C LEVEL(S) : 9500 FT
   M. TURBULENCE    : MOD OFFSHORE.
   N. SEA STATE     : 1.0-1.5 M     SEA TEMPERATURE    : 22 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE EASTERLY WINDS. MAINLY CLOUDY.=

    ===================================================================
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 14/Apr/2017 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     21.5 C
Minimum Air Temperature                     18.8 C
Grass Minimum Temperature                   19.7 C
Relative Humidity                        67 - 86 Percent
Rainfall                                      Trace 
Total rainfall since 1st January            98.3 mm
Against an average of                      244.0 mm

Other Stations                Min                  Max
King's Park                  18.1 C               21.4 C
Wong Chuk Hang               18.3 C               21.6 C
Ta Kwu Ling                  16.8 C               20.8 C
Lau Fau Shan                 16.9 C               20.2 C
Tai Po                       17.0 C               20.3 C
Sha Tin                      17.8 C               21.0 C
Tuen Mun                     18.0 C               21.2 C
Tseung Kwan O                16.9 C               21.3 C
Sai Kung                     17.7 C               21.0 C
Cheung Chau                  17.1 C               20.6 C
Chek Lap Kok                 18.6 C               21.7 C
Tsing Yi                     18.2 C               22.1 C
Shek Kong                    17.5 C               21.4 C
Tsuen Wan Ho Koon            16.4 C               20.4 C
Tsuen Wan Shing Mun Valley   17.7 C               21.7 C
Hong Kong Park               18.9 C               21.4 C
Shau Kei Wan                 17.6 C               21.9 C
Kowloon City                 17.7 C               22.3 C
Happy Valley                 19.1 C               22.0 C
Wong Tai Sin                 17.7 C               22.0 C
Stanley                      18.4 C               21.4 C
Kwun Tong                    17.8 C               21.5 C
Sham Shui Po                 18.3 C               23.0 C
Kai Tak Runway Park          18.9 C               21.3 C
Yuen Long Park               17.8 C               21.2 C
Tai Mei Tuk               17.0 C               20.8 C

Duration of sunshine (King's Park):              0 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 4.
Sea surface temperature (Waglan Island):        22.2 C 

Yesterday's (13 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                          0.10
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 13 Apr
     2003copy right image | Important notices | Privacy policy Last revision date: <14 Apr 2017> 

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