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Bulletin issued at 06:02 HKT 07/Apr/2018

At 6 a.m. at the Hong Kong Observatory the air temperature was 16 degrees Celsius and the relative humidity 54 per cent.

Strong winds are expected from the north. The public should beware of the possible danger brought by rough seas.

Please be reminded that:

The Strong Monsoon Signal has been issued.

The air temperatures at other places were:

King's Park 15 degrees;
Wong Chuk Hang 16 degrees;
Ta Kwu Ling 15 degrees;
Lau Fau Shan 14 degrees;
Tai Po 16 degrees;
Sha Tin 15 degrees;
Tuen Mun 15 degrees;
Tseung Kwan O 15 degrees;
Sai Kung 15 degrees;
Cheung Chau 16 degrees;
Chek Lap Kok 16 degrees;
Tsing Yi 17 degrees;
Shek Kong 15 degrees;
Tsuen Wan Ho Koon 15 degrees;
Tsuen Wan Shing Mun Valley 16 degrees;
Hong Kong Park 16 degrees;
Shau Kei Wan 15 degrees;
Kowloon City 14 degrees;
Happy Valley 16 degrees;
Wong Tai Sin 15 degrees;
Stanley 16 degrees;
Kwun Tong 15 degrees;
Sham Shui Po 16 degrees;
Kai Tak Runway Park 16 degrees;
Yuen Long Park 15 degrees;
Tai Mei Tuk 15 degrees.


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


Climatological Information for 7 Apr

Regional Weather in Hong Kong

Information on Tropical Cyclones

Hong Kong Climatology


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Bulletin updated at 06:20 HKT 07/Apr/2018

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

A strong northeast monsoon is affecting southern China. Locally, it was cool this morning. Temperatures fell to about 16 degrees in the urban areas, and a couple of degrees lower in the New Territories.

Weather forecast for today

Cloudy. Cool with one or two light rain patches in the morning. Very dry with bright periods in the afternoon. The maximum temperature will be around 20 degrees. Fresh to strong northerly winds, occasionally gale on high ground. Winds will moderate later.

Outlook : Fine and very dry with cool morning tomorrow. Temperatures will rise gradually in the following couple of days.


(The above forecast period is valid up to 23:59 HKT today, 07/04/2018; 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 06/Apr/2018

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

GENERAL SITUATION AT 060900 UTC:
COLD FRONT 19N 108E 21N 115E 23N 120E 23N 125E S 15KT.

MARINE FORECAST FOR 24 HOURS FROM 061300 UTC:

HONG KONG= N 6-7, 8 AT FIRST. LGT RAIN PATCHES. SEA 3-4 M, 6 M AT FIRST. SWELL N TO NE 2 M. TEMP 16-22 C. =
KWANGTUNG= N TO NE 7-8. RAIN PATCHES. SEA 4-6 M. SWELL N TO NE 2 M, 3 M LATER. =
TAIWAN STRAIT= N TO NE 7-8, OCNL 9. ISOL SHOWERS. SEA UP TO 8 M. SWELL N TO NE 2-3 M. =
BASHI= N TO NE 7-8. RAIN PATCHES. SEA 4-6 M. SWELL N TO NE 2 M, 3 M LATER. =
PRATAS= N TO NE 7-8. RAIN PATCHES. SEA 4-6 M. SWELL N TO NE 2 M, 3 M LATER. =
BALINTANG= N TO NE 4-5, BEC 7-8. RAIN PATCHES. SEA UP TO 2 M, BEC 4-6 M. SWELL N TO NE 2 M, 3 M LATER. =
SCARBOROUGH= N TO NE 4-5, BEC 7-8. RAIN PATCHES. SEA UP TO 2 M, BEC 4-6 M. SWELL N TO NE 2 M. =
PARACEL= N 7-8. RAIN PATCHES. SEA 4-6 M. SWELL N TO NE 2 M, 3 M LATER. =
TONKIN= N 7-8. ISOL SHOWERS AND TS. SEA 4-6 M. SWELL N TO NE 2 M, 3 M LATER. =
DANANG= N 7-8. ISOL SHOWERS AND TS. SEA 4-6 M. SWELL N TO 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
  • 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 05:30 HKT 07/Apr/2018

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 5:30 a.m. on 07 April 2018

    Warnings:
    Gale force winds in all areas.

    Weather Situation:
    The strong northeast monsoon is affecting the south China coastal waters.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    North force 6 to 7, force 8 at first.
    A few light rain patches at first.
    Rough seas, very rough at first.

    Nan'ao, Shanwei, South of Hong Kong and Shangchuan Dao:
    North to northeast force 7 to 8.
    Rough to very rough seas.

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

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

    Waglan Island Wind north force 7
      Visibility 23 Kilometres

    Shantou Wind east force 1
      Visibility 30 Kilometres

    Dongsha Wind north force 5
      Visibility 10 Kilometres

    Huangmaozhou Wind northeast force 6

    Macau Wind north force 5
      Visibility 11 Kilometres

    Xisha Wind north-northeast force 3
      Visibility 20 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
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    Weather Forecast for Local Aviation

    Bulletin issued at 01:30 HKT 07/APR/2018
    (Next update at 9:00-9:30 HKT 07/APR/2018)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     SEV TURB AND SEV GUSTS.  
     GALE FORCE WINDS.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     THE STRONG NORTHEAST MONSOON 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:  020/15, OCNL 20
       OFFSHORE:  030/25-30, OCNL 35                   16-22
   B.   2000 FT:  030/30-35G45                         12
   C.   5000 FT:  040/30                               11
   D.  10000 FT:  290/15                               5
   E.  18000 FT:  260/40                               MS9
   F.  24000 FT:  250/50                               MS19
   G.  30000 FT:  240/65                               MS32
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      1900-2600 FT, 4300-4900 FT.
   I. WEATHER       : 
      CLOUDY WITH A FEW LIGHT RAIN PATCHES.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 3000 FT  SCT 4500 FT  BKN 8000 FT.
   K. VISIBILITY    : 9 KM. TEMPO 4000 M IN RAIN.
   L. 0 DEG. C LEVEL: 14500 FT      10 DEG. C LEVEL(S) : 7800 FT
   M. TURBULENCE    : MOD TO SEV.
   N. SEA STATE     : 4.0-5.5 M     SEA TEMPERATURE    : 22 DEG
IV.  FURTHER OUTLOOK: 
     FRESH TO STRONG NORTHERLY WINDS. BRIGHT PERIODS.=

    ===================================================================
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 07/Apr/2018 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     26.6 C
Minimum Air Temperature                     17.5 C
Grass Minimum Temperature                   18.5 C
Relative Humidity                        54 - 88 Percent
Rainfall                                      trace 
Total rainfall since 1st January            89.4 mm
Against an average of                      196.6 mm

Other Stations                Min                  Max
King's Park                  16.6 C               27.4 C
Wong Chuk Hang               17.4 C               27.3 C
Ta Kwu Ling                  16.0 C               27.6 C
Lau Fau Shan                 16.3 C               25.7 C
Tai Po                       16.9 C               27.8 C
Sha Tin                      16.8 C               28.3 C
Tuen Mun                     17.3 C               27.9 C
Tseung Kwan O                16.4 C               29.3 C
Sai Kung                     16.1 C               27.7 C
Cheung Chau                  16.7 C               26.7 C
Chek Lap Kok                 17.3 C               27.3 C
Tsing Yi                     17.3 C               27.8 C
Shek Kong                    16.6 C               27.6 C
Tsuen Wan Ho Koon            15.3 C               26.2 C
Tsuen Wan Shing Mun Valley   16.6 C               28.8 C
Hong Kong Park               17.4 C               29.1 C
Shau Kei Wan                 16.5 C               28.8 C
Kowloon City                 16.2 C               28.9 C
Happy Valley                 17.4 C               28.5 C
Wong Tai Sin                 16.1 C               28.1 C
Stanley                      17.3 C               26.7 C
Kwun Tong                    16.0 C               28.9 C
Sham Shui Po                 16.9 C               27.8 C
Kai Tak Runway Park          17.3 C               28.0 C
Yuen Long Park               17.0 C               27.8 C
Tai Mei Tuk               15.9 C               29.4 C

Duration of sunshine (King's Park):              4.2 H
The mean UV index recorded at King's Park yesterday was 2,
the UV intensity was Low.
The maximum UV index for yesterday was 6.
Sea surface temperature (Waglan Island):        22.1 C 

Yesterday's (06 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                        0.15

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 06 Apr
     2003copy right image | Important notices | Privacy policy Last revision date: <07 Apr 2018> 

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