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Bulletin issued at 17:02 HKT 16/Apr/2018

At 5 p.m. at the Hong Kong Observatory the air temperature was 19 degrees Celsius and the relative humidity 84 per cent.
During the past hour the mean UV Index recorded at King's Park was 0.2. The intensity of UV radiation was low.

The air temperatures at other places were:

King's Park 18 degrees;
Wong Chuk Hang 19 degrees;
Ta Kwu Ling 16 degrees;
Lau Fau Shan 16 degrees;
Tai Po 16 degrees;
Sha Tin 17 degrees;
Tuen Mun 16 degrees;
Tseung Kwan O 18 degrees;
Sai Kung 17 degrees;
Cheung Chau 17 degrees;
Chek Lap Kok 17 degrees;
Tsing Yi 18 degrees;
Shek Kong 17 degrees;
Tsuen Wan Ho Koon 16 degrees;
Tsuen Wan Shing Mun Valley 17 degrees;
Hong Kong Park 18 degrees;
Shau Kei Wan 18 degrees;
Kowloon City 18 degrees;
Happy Valley 19 degrees;
Wong Tai Sin 17 degrees;
Stanley 19 degrees;
Kwun Tong 18 degrees;
Sham Shui Po 18 degrees;
Kai Tak Runway Park 18 degrees;
Yuen Long Park 17 degrees;
Tai Mei Tuk 17 degrees.

Between 3:45 and 4:45 p.m., the rainfall recorded in various regions were:

Tuen Mun 0 to 1 mm;
North District 0 to 1 mm;
Islands District 0 to 1 mm;
Tai Po 0 to 1 mm;
Yuen Long 0 to 1 mm.


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


Climatological Information for 16 Apr

Regional Weather in Hong Kong

Information on Tropical Cyclones

Hong Kong Climatology


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Bulletin updated at 16:45 HKT 16/Apr/2018

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

The northeast monsoon is affecting the south China coast. Meanwhile, there are showers around the Pearl River Estuary.

Weather forecast for tonight and tomorrow

Mainly cloudy. A few showers tonight and at first tomorrow, bright periods in the afternoon. Temperatures will range between 18 and 23 degrees. Moderate east to northeasterly winds, occasionally fresh offshore at first.

Outlook : Temperatures rising in the following few days.


(The above forecast period is valid up to 23:59 HKT tomorrow, 17/04/2018; 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 09:00 HKT 16/Apr/2018

GALE WARNING AREAS: TAIWAN STRAIT AND BASHI.

GENERAL SITUATION AT 152100 UTC:
THE NORTHEAST MONSOON IS AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 160100 UTC:

HONG KONG= NE 5-6. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 2-3 M. SWELL NE UP TO 2 M. TEMP 21-18 C. =
KWANGTUNG= NE 6, UP TO 7 IN E. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA UP TO 4 M. SWELL NE 2 M. =
TAIWAN STRAIT= NE 6-7, UP TO 8 AT FIRST. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 3-4 M, UP TO 6 M AT FIRST. SWELL NE 2-3 M. =
BASHI= NE 6-7, UP TO 8 AT FIRST. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 3-4 M, UP TO 6 M AT FIRST. SWELL NE 2-3 M. =
PRATAS= NE 6, OCNL 7. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 4 M. SWELL NE 2 M. =
BALINTANG= NE 6-7. ISOL SHOWERS. SEA 3-4 M. SWELL NE 2-3 M. =
SCARBOROUGH= NE 5-6. ISOL SHOWERS AND TS. SEA 2-3 M. SWELL NE 2 M. =
PARACEL= NE 5-6. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 2-3 M. SWELL NE UP TO 2 M. =
TONKIN= N TO NE 5-6, OCNL 7. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA UP TO 4 M. SWELL NE UP TO 2 M. =
DANANG= NE 5-6. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 2-3 M. SWELL NE 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
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    Bulletin issued at 16:30 HKT 16/Apr/2018

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 4:30 p.m. on 16 April 2018

    Warnings:
    Strong winds in all areas.

    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 5, occasionally force 6.
    A few showers.
    Moderate to rough seas.

    Nan'ao and Shanwei:
    East to northeast force 6, occasionally force 7.
    Isolated squally showers and thunderstorms.
    Rough seas.

    South of Hong Kong and Shangchuan Dao:
    East to northeast force 6.
    Isolated squally showers and thunderstorms.
    Rough seas.

    Outlook for the next 48 hours
    East to northeasterly winds of force 5 to 6. Isolated showers and thunderstorms.

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

    Waglan Island Wind north force 3
      Visibility 19 Kilometres

    Shantou Wind northeast force 1
      Visibility 21 Kilometres

    Huangmaozhou Wind north force 4

    Macau Wind north force 3
      Visibility 2300 Metres in rain

    Xisha Wind east force 2
      Visibility 19 Kilometres

  • Explanation of Seas or Sea Waves
  • Explanation of Swells
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  • Visibility Readings in Hong Kong Waters
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    • WEATHER FORECAST FOR LOCAL AVIATION
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    Weather Forecast for Local Aviation

    Bulletin issued at 17:30 HKT 16/APR/2018
    (Next update at 01:30 HKT 17/APR/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:  030/10
       OFFSHORE:  030/15-20                            18-16
   B.   2000 FT:  040/15-20                            15
   C.   5000 FT:  270/10                               13
   D.  10000 FT:  270/20                               6
   E.  18000 FT:  260/35                               MS9
   F.  24000 FT:  260/45                               MS20
   G.  30000 FT:  250/75                               MS31
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL
   I. WEATHER       : 
      MAINLY CLOUDY WITH A FEW ISOLATED SHOWERS.
      LOCALISED MIST.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 800 FT  SCT 1500 FT  BKN 6000 FT.
   K. VISIBILITY    : 7 KM.  TEMPO 3000 M IN SHOWERS/MIST.
   L. 0 DEG. C LEVEL: 14000 FT      10 DEG. C LEVEL(S) : 7800 FT
   M. TURBULENCE    : MOD OFFSHORE AND NEAR HILLS
   N. SEA STATE     : 2.0-2.5 M     SEA TEMPERATURE    : 23 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE EAST TO NORTHEASTERLY WINDS,
     OCCASIONALLY FRESH OFFSHORE AT FIRST. MAINLY
     CLOUDY. BRIGHT PERIODS IN THE AFTERNOON.=

    ===================================================================
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 13:35 HKT on 15 Apr 18

    VHHK SIGMET 3 VALID 150345/150745 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N2000 E11130 - N2124 E11130 - N2230 E11342 - N2336 E11712 - N2242 E11712 - N2000 E11130 - N2000 E11130 TOP FL400 MOV NE 15KT NC= VHHK SIGMET 5 VALID 150535/150935 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N2248 E11442 - N2342 E11730 - N2248 E11730 - N2154 E11442 - N2248 E11442 TOP FL400 MOV NE 15KT 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 16/Apr/2018 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     25.7 C
Minimum Air Temperature                     18.6 C
Grass Minimum Temperature                   19.4 C
Relative Humidity                        73 - 94 Percent
Rainfall                                    17.2 mm 
Total rainfall since 1st January           106.6 mm
Against an average of                      251.5 mm

Other Stations                Min                  Max
King's Park                  17.9 C               25.3 C
Wong Chuk Hang               18.1 C               25.1 C
Ta Kwu Ling                  16.8 C               24.6 C
Lau Fau Shan                 16.4 C               24.2 C
Tai Po                       17.0 C               25.2 C
Sha Tin                      17.4 C               25.8 C
Tuen Mun                     17.0 C               24.8 C
Tseung Kwan O                17.6 C               25.0 C
Sai Kung                     17.7 C               25.0 C
Cheung Chau                  17.3 C               24.5 C
Chek Lap Kok                 17.1 C               23.8 C
Tsing Yi                     17.7 C               25.2 C
Shek Kong                    16.8 C               25.6 C
Tsuen Wan Ho Koon            16.1 C               24.2 C
Tsuen Wan Shing Mun Valley   17.5 C               25.4 C
Hong Kong Park               17.9 C               25.6 C
Shau Kei Wan                 17.5 C               24.7 C
Kowloon City                 17.5 C               25.4 C
Happy Valley                 18.3 C               25.8 C
Wong Tai Sin                 17.5 C               25.7 C
Stanley                      18.5 C               24.9 C
Kwun Tong                    17.6 C               25.3 C
Sham Shui Po                 17.8 C               25.4 C
Kai Tak Runway Park          18.2 C               25.1 C
Yuen Long Park               17.2 C               25.5 C
Tai Mei Tuk               16.6 C               25.2 C

Duration of sunshine (King's Park):              0.9 H
The mean UV index recorded at King's Park yesterday was 0.9,
the UV intensity was Low.
The maximum UV index for yesterday was 3.
Sea surface temperature (Waglan Island):        22.8 C 

Yesterday's (15 Apr 2018) 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                         0.11
Kwun Tong                           0.12
Sai Wan Ho                          0.09
King's Park                         0.15
Tsim Bei Tsui                       0.13
Cape D'Aguilar                      0.14
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 15 Apr
     2003copy right image | Important notices | Privacy policy Last revision date: <16 Apr 2018> 

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