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Bulletin issued at 11:02 HKT 06/Apr/2018

At 11 a.m. at the Hong Kong Observatory the air temperature was 27 degrees Celsius and the relative humidity 63 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 27 degrees;
Wong Chuk Hang 26 degrees;
Ta Kwu Ling 27 degrees;
Lau Fau Shan 26 degrees;
Tai Po 26 degrees;
Sha Tin 27 degrees;
Tuen Mun 27 degrees;
Tseung Kwan O 29 degrees;
Sai Kung 27 degrees;
Cheung Chau 27 degrees;
Chek Lap Kok 26 degrees;
Tsing Yi 27 degrees;
Shek Kong 27 degrees;
Tsuen Wan Ho Koon 26 degrees;
Tsuen Wan Shing Mun Valley 28 degrees;
Hong Kong Park 29 degrees;
Shau Kei Wan 28 degrees;
Kowloon City 29 degrees;
Happy Valley 28 degrees;
Wong Tai Sin 28 degrees;
Stanley 26 degrees;
Kwun Tong 28 degrees;
Sham Shui Po 26 degrees;
Kai Tak Runway Park 27 degrees;
Yuen Long Park 27 degrees;
Tai Mei Tuk 28 degrees.


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


Climatological Information for 6 Apr

Regional Weather in Hong Kong

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Hong Kong Climatology


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Bulletin updated at 10:45 HKT 06/Apr/2018

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

A cold front over inland Guangdong is moving southwards gradually. It is expected to move across the coast of Guangdong in the afternoon.

Weather forecast for today

Sunny periods at first. Light winds and relatively low visibility. Winds strengthening from the north in the afternoon. It will be cloudy with a few showers. Temperatures will fall significantly to a minimum of about 18 degrees tonight.

Outlook : The weather will improve gradually during the weekend. It will be cool in the morning and very dry during the day. Mainly fine early next week and temperatures will rise.


(The above forecast period is valid up to 23:59 HKT today, 06/04/2018; 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 06/Apr/2018

GALE WARNING AREAS: HONG KONG, KWANGTUNG, TAIWAN STRAIT, BASHI, PRATAS, BALINTANG, SCARBOROUGH, PARACEL, TONKIN AND DANANG.

GENERAL SITUATION AT 052100 UTC:
COLD FRONT 23N 105E 22N 110E 29N 125E S 15KT.

MARINE FORECAST FOR 24 HOURS FROM 060100 UTC:

HONG KONG= N 4-5, BEC 7-8. ISOL SHOWERS. DOWN TO 4000 M IN MIST PATCHES AT FIRST. SEA UP TO 2 M, BEC 4-6 M. SWELL NE UP TO 2 M. TEMP 27-16 C. =
KWANGTUNG= N 4-5, OCNL 6, BEC 7-8. ISOL SHOWERS. DOWN TO 4000 M IN MIST PATCHES AT FIRST. SEA UP TO 3 M, BEC 4-6 M. SWELL NE 2 M. =
TAIWAN STRAIT= N TO NE 6-7, BEC 8-9. ISOL SHOWERS AND TS. SEA 3-4 M, BEC 6-8 M. SWELL NE 2 M. =
BASHI= NE 4-5, BEC 7-8. FINE. ISOL SHOWERS LATER. SEA UP TO 2 M, BEC 4-6 M. SWELL NE 2 M. =
PRATAS= NE 4-5, BEC 7-8. ISOL SHOWERS. SEA UP TO 2 M, BEC 4-6 M. SWELL NE 2 M. =
BALINTANG= NE 4-5, BEC 7-8. FINE. ISOL SHOWERS LATER. SEA UP TO 2 M, BEC 4-6 M. SWELL NE 2 M. =
SCARBOROUGH= NE 4-5, 7-8 LATER. ISOL SHOWERS. SEA UP TO 2 M, 4-6 M LATER. SWELL NE 2 M. =
PARACEL= NE 5-6, BEC 7-8. ISOL SHOWERS. SEA 2-3 M, BEC 4-6 M. SWELL NE 2 M. =
TONKIN= N TO NE 7-8. ISOL SHOWERS AND TS. SEA 4-6 M. SWELL NE 2 M. =
DANANG= NE 5-6, BEC 7-8. ISOL SHOWERS. SEA 2-3 M, BEC 4-6 M. SWELL NE 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
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    • 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 09:30 HKT 06/Apr/2018

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 9:30 a.m. on 06 April 2018

    Warnings:
    Gale force winds in all areas.

    Weather Situation:
    A cold front over inland Guangdong is moving southwards gradually. It is expected to move across the coastal waters of Guangdong in the afternoon.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    North force 4 to 5, becoming force 7 to 8.
    Isolated showers. Visibility relatively low in some areas at first.
    Moderate seas, becoming rough to very rough.

    Nan'ao, Shanwei, South of Hong Kong and Shangchuan Dao:
    Northeast force 4 to 5, occasionally force 6, becoming force 7 to 8.
    Moderate to rough seas, becoming very rough.

    Outlook for the next 48 hours
    North to northeasterly winds of force 6 to 7, force 8 at first.

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

    Waglan Island Wind east-northeast force 1
      Visibility 28 Kilometres

    Shantou Wind east-northeast force 1
      Visibility 12 Kilometres

    Dongsha Wind east-northeast force 2
      Visibility 10 Kilometres

    Huangmaozhou Wind north-northeast force 2

    Macau Wind north force 1
      Visibility 14 Kilometres

    Xisha Wind north force 2
      Visibility 20 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 09:00 HKT 06/APR/2018
    (Next update at 12:30 HKT 06/APR/2018)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     STRONG WINDS AND SEV TURB.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     A COLD FRONT OVER INLAND GUANGDONG IS MOVING
     SOUTHWARDS GRADUALLY.  IT IS EXPECTED TO MOVE
     ACROSS THE COAST OF GUANGDONG IN THE AFTERNOON.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1000 TO 2000 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  VRB/5-10 BEC 360/20-25
       OFFSHORE:  VRB/5-10 BEC 360/25-30               27-20
   B.   2000 FT:  360/10 BEC 020/25-30                 21-16
   C.   5000 FT:  060/15                               13
   D.  10000 FT:  270/15                               8
   E.  18000 FT:  250/35                               MS6
   F.  24000 FT:  260/50                               MS16
   G.  30000 FT:  260/60                               MS30
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      SUNNY PERIODS AT FIRST, BECOMING CLOUDY WITH A
      FEW SHOWERS AND LOCALIZED MIST.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1500 FT  SCT 3000 FT.
   K. VISIBILITY    : 9 KM.  TEMPO 3000 M IN SHOWERS/MIST.
   L. 0 DEG. C LEVEL: 14500 FT      10 DEG. C LEVEL(S) : 9200 FT
   M. TURBULENCE    : MOD TO SEV LATER.
   N. SEA STATE     : 1.0 BEC 3.0 M   SEA TEMPERATURE    : 23 DEG
IV.  FURTHER OUTLOOK: 
     FRESH TO STRONG NORTH TO NORTHEASTERLY WINDS.
     CLOUDY WITH A FEW SHOWERS.=

    ===================================================================
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 12:37 HKT on 20 Mar 18

    VHHK SIGMET 1 VALID 200040/200440 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N2100 E11730 - N1948 E11630 - N1800 E11254 - N1930 E11130 - N1948 E11130 - N2130 E11730 - N2100 E11730 TOP FL380 MOV ENE 20KT NC= VHHK SIGMET 2 VALID 200440/200840 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N2130 E11730 - N1706 E11336 - N1842 E11212 - N2324 E11730 - N2130 E11730 TOP FL350 MOV E 20KT WKN=

    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 06/Apr/2018 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     27.8 C
Minimum Air Temperature                     22.7 C
Grass Minimum Temperature                   20.8 C
Relative Humidity                        66 - 88 Percent
Rainfall                                       0 mm 
Total rainfall since 1st January            89.4 mm
Against an average of                      187.8 mm

Other Stations                Min                  Max
King's Park                  21.4 C               27.6 C
Wong Chuk Hang               20.4 C               27.0 C
Ta Kwu Ling                  18.5 C               30.6 C
Lau Fau Shan                 20.0 C               29.8 C
Tai Po                       20.0 C               28.5 C
Sha Tin                      19.5 C               28.7 C
Tuen Mun                     20.7 C               28.6 C
Tseung Kwan O                20.3 C               28.7 C
Sai Kung                     21.3 C               27.5 C
Cheung Chau                  21.0 C               28.9 C
Chek Lap Kok                 21.8 C               30.0 C
Tsing Yi                     21.1 C               28.3 C
Shek Kong                    19.2 C               30.3 C
Tsuen Wan Ho Koon            19.4 C               27.5 C
Tsuen Wan Shing Mun Valley   19.7 C               29.5 C
Hong Kong Park               21.3 C               28.5 C
Shau Kei Wan                 21.4 C               27.1 C
Kowloon City                 21.6 C               29.4 C
Happy Valley                 20.8 C               27.8 C
Wong Tai Sin                 21.6 C               28.1 C
Stanley                      21.3 C               27.1 C
Kwun Tong                    22.1 C               28.3 C
Sham Shui Po                 21.8 C               28.6 C
Kai Tak Runway Park          22.2 C               25.8 C
Yuen Long Park               19.5 C               30.5 C
Tai Mei Tuk               21.2 C               30.5 C

Duration of sunshine (King's Park):              8.8 H
The mean UV index recorded at King's Park yesterday was 4,
the UV intensity was Moderate.
The maximum UV index for yesterday was 9.
Sea surface temperature (Waglan Island):        22.7 C 

Yesterday's (05 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                             0.09
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                        0.14

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 05 Apr
     2003copy right image | Important notices | Privacy policy Last revision date: <06 Apr 2018> 

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