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Bulletin issued at 05:02 HKT 15/Apr/2018

At 5 a.m. at the Hong Kong Observatory the air temperature was 22 degrees Celsius and the relative humidity 90 per cent.

The air temperatures at other places were:

King's Park 22 degrees;
Wong Chuk Hang 22 degrees;
Ta Kwu Ling 21 degrees;
Lau Fau Shan 20 degrees;
Tai Po 22 degrees;
Sha Tin 23 degrees;
Tuen Mun 21 degrees;
Tseung Kwan O 22 degrees;
Sai Kung 24 degrees;
Cheung Chau 21 degrees;
Chek Lap Kok 20 degrees;
Tsing Yi 22 degrees;
Shek Kong 21 degrees;
Tsuen Wan Ho Koon 20 degrees;
Tsuen Wan Shing Mun Valley 22 degrees;
Hong Kong Park 22 degrees;
Shau Kei Wan 22 degrees;
Kowloon City 23 degrees;
Happy Valley 22 degrees;
Wong Tai Sin 23 degrees;
Stanley 23 degrees;
Kwun Tong 22 degrees;
Sham Shui Po 22 degrees;
Kai Tak Runway Park 22 degrees;
Yuen Long Park 21 degrees;
Tai Mei Tuk 23 degrees.

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

North District 0 to 1 mm.


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


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Bulletin updated at 04:45 HKT 15/Apr/2018

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

The northeast monsoon is affecting the coastal areas of Guangdong.

Weather forecast for today

Cloudy with a few showers. There will be isolated thunderstorms at first. Temperatures during the day will linger around 23 degrees. Moderate northerly winds, fresh at times.

Outlook : Cooler with showers and a few thunderstorms in the next couple of days. It will be brighter midweek this week.


(The above forecast period is valid up to 23:59 HKT today, 15/04/2018; 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 14/Apr/2018

N0 WARNING.

GENERAL SITUATION AT 140900 UTC:
COLD FRONT 23N 105E 22N 108E 24N 115E 27N 121E S 10KT.

MARINE FORECAST FOR 24 HOURS FROM 141300 UTC:

HONG KONG= S 3-4, BEC N TO NE 4, OCNL 5 LATER. A FEW SHOWERS AND TS. SEA UP TO 2 M LATER. TEMP 20-25 C. =
KWANGTUNG= S 3-4, BEC N TO NE 5-6 LATER. ISOL SHOWERS AND TS. SEA 2-3 M LATER. =
TAIWAN STRAIT= S TO SW 4-5, BEC N TO NE 6-7 LATER. 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 3-4 M LATER. =
BASHI= S TO SE 4-5, BEC N TO NE 6-7 LATER. 4000 M IN ISOL SQUALLY SHOWERS AND TS LATER. SEA 3-4 M LATER. =
PRATAS= S TO SE 4-5, N TO NE 5-6 LATER. ISOL SHOWERS AND TS. SEA 2-3 M LATER. =
BALINTANG= S TO SE 4-5, BEC N TO NE 5-6 LATER. ISOL SHOWERS. SEA 2-3 M LATER. =
SCARBOROUGH= E TO NE 4-5. FINE. SEA UP TO 2 M. =
PARACEL= S TO SE 4-5, BEC NE 5-6 LATER. ISOL SHOWERS AND TS IN N LATER. SEA 2-3 M LATER. =
TONKIN= N TO NE 5-6. ISOL SHOWERS AND TS. SEA 2-3 M. =
DANANG= S TO SE 4-5, BEC N TO NE 4-5 LATER. ISOL SHOWERS AND TS IN N LATER. 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 05:30 HKT 15/Apr/2018

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 5:30 a.m. on 15 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:
    North to northeast force 5 to 6.
    Showers and squally thunderstorms. Mist patches at first.
    Moderate to rough seas.

    Nan'ao:
    North to northeast force 5 to 6, occasionally force 7.
    Isolated squally showers and thunderstorms.
    Moderate to rough seas.

    Shanwei, South of Hong Kong and Shangchuan Dao:
    North to northeast force 5 to 6.
    Isolated showers and thunderstorms.
    Moderate to rough seas.

    Outlook for the next 48 hours
    Northeasterly winds of force 5 to 6, occasionally force 7. Isolated showers and thunderstorms.

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

    Waglan Island Wind north-northwest force 4
      Visibility 6 Kilometres

    Shantou Wind west force 1
      Visibility 26 Kilometres

    Huangmaozhou Wind north-northwest force 6

    Macau Wind northwest force 2
      Visibility 7 Kilometres

    Xisha Wind east-southeast force 1
      Visibility 13 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 01:30 HKT 15/APR/2018
    (Next update at 9:00-9:30 HKT 15/APR/2018)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     STRONG WINDS AND SEV TURB. 
     ISOL CUNIM/TS AND ASSOCIATED HAZARDS.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     A COLD FRONT IS MOVING ACROSS GUANGDONG COAST AND BRINGING
     THUNDERY SHOWERS TO THE REGION. THE NORTHEAST MONSOON BEHIND
     IS EXPECTED TO AFFECT THE COASTAL AREAS OF GUANGDONG.
     
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 0200 TO 1200 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  340/10-15
                  TEMPO VRB/20G30 IN TS
       OFFSHORE:  360/15-20, OCNL 25                   18-23
   B.   2000 FT:  020/15-20                            14-18
   C.   5000 FT:  240/15                               16
   D.  10000 FT:  260/20                               11
   E.  18000 FT:  280/35                               MS3
   F.  24000 FT:  260/40                               MS14
   G.  30000 FT:  260/50                               MS29
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      3400-4100 FT.
   I. WEATHER       : 
      CLOUDY WITH SHOWERS AND ISOLATED THUNDERSTORMS.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1000 FT SCT 2500 FT. TEMPO FEW CB 800 FT
      SCT 2000 FT BKN 5000 FT
   K. VISIBILITY    : 9 KM. TEMPO 3000 M IN SHOWERS. 
                      TEMPO 2000 M IN TS.
   L. 0 DEG. C LEVEL: 15500 FT      10 DEG. C LEVEL(S) : 10400 FT
   M. TURBULENCE    : MOD TO SEV NEAR CUNIM/TS AND OFFSHORE.
                      MOD NEAR HILLS
   N. SEA STATE     : 1.0-3.0 M     SEA TEMPERATURE    : 24 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE TO FRESH NORTH TO NORTHEASTERLY WINDS, OCCASIONALLY
     STRONG OFFSHORE. CLOUDY WITH A FEW SHOWERS. ISOLATED 
     THUNDERSTORMS AT FIRST.=

    ===================================================================
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 00:15 HKT on 15 Apr 18

    VHHK SIGMET 1 VALID 141215/141615 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N2348 E11730 - N2148 E11730 - N2136 E11436 - N2212 E11312 - N2354 E11718 - N2348 E11730 TOP FL400 MOV SE 15KT NC = VHHK SIGMET 2 VALID 141615/142015 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N2242 E11430 - N2342 E11730 - N2200 E11730 - N2200 E11500 - N2242 E11430 TOP FL400 MOV ESE 15KT 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 15/Apr/2018 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     29.9 C
Minimum Air Temperature                     25.2 C
Grass Minimum Temperature                   23.7 C
Relative Humidity                        67 - 86 Percent
Rainfall                                      Trace 
Total rainfall since 1st January            89.4 mm
Against an average of                      249.7 mm

Other Stations                Min                  Max
King's Park                  24.3 C               29.6 C
Wong Chuk Hang               23.5 C               28.0 C
Ta Kwu Ling                  22.3 C               30.8 C
Lau Fau Shan                 23.9 C               29.5 C
Tai Po                       23.9 C               30.8 C
Sha Tin                      23.3 C               30.0 C
Tuen Mun                     24.0 C               28.5 C
Tseung Kwan O                22.6 C               29.3 C
Sai Kung                     23.6 C               26.5 C
Cheung Chau                  23.5 C               29.0 C
Chek Lap Kok                 23.5 C               30.4 C
Tsing Yi                     24.1 C               29.9 C
Shek Kong                    24.1 C               31.0 C
Tsuen Wan Ho Koon            23.4 C               27.9 C
Tsuen Wan Shing Mun Valley   23.9 C               29.1 C
Hong Kong Park               24.6 C               28.0 C
Shau Kei Wan                 23.2 C               28.0 C
Kowloon City                 24.4 C               29.9 C
Happy Valley                 24.9 C               29.8 C
Wong Tai Sin                 24.5 C               29.6 C
Stanley                      23.6 C               28.6 C
Kwun Tong                    24.1 C               29.9 C
Sham Shui Po                 24.3 C               29.9 C
Kai Tak Runway Park          23.9 C               29.2 C
Yuen Long Park               23.8 C               30.2 C
Tai Mei Tuk               23.4 C               30.8 C

Duration of sunshine (King's Park):              2.0 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 5.
Sea surface temperature (Waglan Island):        23.9 C 

Yesterday's (14 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                               0.10
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                         0.15
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 14 Apr
     2003copy right image | Important notices | Privacy policy Last revision date: <15 Apr 2018> 

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