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Bulletin issued at 23:02 HKT 26/Apr/2018

At 11 p.m. at the Hong Kong Observatory the air temperature was 23 degrees Celsius and the relative humidity 85 per cent.

The air temperatures at other places were:

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


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


Climatological Information for 26 Apr

Regional Weather in Hong Kong

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Bulletin updated at 23:15 HKT 26/Apr/2018

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

A band of rain-bearing clouds covered the south China coast and the northern part of the South China Sea today. Locally, it was mainly cloudy with one or two showers. A few millimetres of rainfall were recorded over parts of the New Territories. The band of rain-bearing clouds will continue to cover Guangdong tomorrow. Under the influence of an anticyclone aloft over the northern part of the South China Sea, there will be sunny intervals over the coast of Guangdong on Saturday and Sunday.

Weather forecast for Hong Kong (Friday, 27 Apr 2018)

Cloudy with isolated showers. Temperatures will range between 22 and 26 degrees. Moderate easterly winds.

Outlook : Sunny intervals on Saturday and Sunday. Mainly fine and hot early next week.


(The above forecast period is valid up to 23:59 HKT tomorrow, 27/04/2018; 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 26/Apr/2018

N0 WARNING.

GENERAL SITUATION AT 260900 UTC:
AN EASTERLY AIRSTREAM IS AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 261300 UTC:

HONG KONG= E 4-5, OCNL 6. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 3 M. TEMP 22-26 C. =
KWANGTUNG= E 4-5, OCNL 6. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 3 M. SWELL NE UP TO 2 M. =
TAIWAN STRAIT= NE 4-5. ISOL SHOWERS AND TS. SEA UP TO 2 M. SWELL NE 2 M. =
BASHI= E TO NE 5-6. ISOL SHOWERS AND TS. SEA 2-3 M. SWELL NE 2 M. =
PRATAS= E 5, OCNL 6. ISOL SHOWERS AND TS. SEA UP TO 3 M. SWELL NE 2 M. =
BALINTANG= E TO NE 5-6. ISOL SHOWERS AND TS. SEA 2-3 M. SWELL NE 2 M. =
SCARBOROUGH= E TO NE 4-5. ISOL SHOWERS AND TS. SEA UP TO 2 M. SWELL NE UP TO 2 M. =
PARACEL= E 4-5. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 2 M. SWELL NE UP TO 2 M. =
TONKIN= E TO NE 4-5. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 2 M. =
DANANG= E 4-5. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. 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 23:30 HKT 26/Apr/2018

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 11:30 p.m. on 26 April 2018

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

    Weather Situation:
    An easterly airstream is affecting the south China coastal waters.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    East force 4 to 5, occasionally force 6.
    Isolated squally showers and thunderstorms.
    Moderate to rough seas.

    Nan'ao, Shanwei and South of Hong Kong:
    East force 4 to 5, occasionally force 6.
    Isolated squally showers and thunderstorms.
    Moderate to rough seas.

    Shangchuan Dao:
    East force 4 to 5.
    Isolated squally showers and thunderstorms.
    Moderate seas.

    Outlook for the next 48 hours
    Easterly winds of force 4 to 5, occasionally force 6. Isolated showers and thunderstorms.

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

    Waglan Island Wind east-northeast force 3
      Visibility 14 Kilometres

    Shantou Wind east force 1
      Visibility 19 Kilometres

    Huangmaozhou Wind east force 5

    Macau Wind east force 1
      Visibility 2400 Metres in mist

    Xisha Wind east-northeast force 2
      Visibility 25 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 17:30 HKT 26/APR/2018
    (Next update at 01:30 HKT 27/APR/2018)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     ISOL CUNIM/TS AND ASSOCIATED HAZARDS.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     AN EASTERLY AIRSTREAM IS AFFECTING THE SOUTH
     CHINA COASTAL AREAS.MEANWHILE, SHOWERS ARE
     AFFECTING THE VICINITY OF THE PEARL RIVER
     ESTUARY.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1800 TO 0400 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  090/10
                  TEMPO VRB/15G25 IN TS
       OFFSHORE:  090/15-20                            24-22
   B.   2000 FT:  120/10-15                            20
   C.   5000 FT:  190/5-10                             16
   D.  10000 FT:  260/10                               9
   E.  18000 FT:  250/10                               MS5
   F.  24000 FT:  260/20                               MS14
   G.  30000 FT:  260/25                               MS26
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      2500-3300 FT
   I. WEATHER       : 
      CLOUDY WITH A FEW SHOWERS. ISOLATED THUNDERSTORMS AT FIRST. 
      LOCALISED MIST.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1500 FT  SCT 3500 FT.
      TEMPO FEW CB 800 FT  SCT 1500 FT  BKN 4000 FT.
   K. VISIBILITY    : 7 KM.  TEMPO 4000 M IN SHOWERS OR MIST. 
                      TEMPO 2500 M IN TS.
   L. 0 DEG. C LEVEL: 16000 FT      10 DEG. C LEVEL(S) : 9400 FT
   M. TURBULENCE    : MOD OFFSHORE. MOD TO SEV NEAR CUNIM/TS.
   N. SEA STATE     : 2.0-2.5 M     SEA TEMPERATURE    : 23 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE EASTERLY WINDS.  MAINLY CLOUDY WITH A
     FEW ISOLATED SHOWERS. LOCALISED MIST.=

    ===================================================================
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 17:47 HKT on 26 Apr 18

    VHHK SIGMET 2 VALID 260555/260955 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N1948 E11254 - N1906 E11148 - N1930 E11130 - N2130 E11130 - N2212 E11312 - N1948 E11254 TOP FL380 MOV ENE 10KT NC= VHHK SIGMET 3 VALID 260955/261355 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N1954 E11242 - N1918 E11142 - N1930 E11130 - N2130 E11130 - N2206 E11306 - N2212 E11324 - N1954 E11242 TOP FL380 MOV ENE 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 26/Apr/2018 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     24.7 C
Minimum Air Temperature                     23.3 C
Grass Minimum Temperature                   22.4 C
Relative Humidity                        72 - 84 Percent
Rainfall                                      Trace 
Total rainfall since 1st January           117.1 mm
Against an average of                      308.2 mm

Other Stations                Min                  Max
King's Park                  22.7 C               24.2 C
Wong Chuk Hang               21.9 C               24.2 C
Ta Kwu Ling                  20.9 C               24.1 C
Lau Fau Shan                 21.2 C               23.6 C
Tai Po                       21.5 C               23.2 C
Sha Tin                      22.8 C               24.2 C
Tuen Mun                     21.8 C               24.1 C
Tseung Kwan O                21.3 C               23.4 C
Sai Kung                     22.6 C               24.3 C
Cheung Chau                  21.0 C               22.6 C
Chek Lap Kok                 23.1 C               25.7 C
Tsing Yi                     22.5 C               24.3 C
Shek Kong                    22.0 C               24.1 C
Tsuen Wan Ho Koon            20.7 C               22.7 C
Tsuen Wan Shing Mun Valley   21.4 C               23.7 C
Hong Kong Park               22.1 C               23.7 C
Shau Kei Wan                 21.3 C               23.9 C
Kowloon City                 22.4 C               23.8 C
Happy Valley                 22.2 C               24.2 C
Wong Tai Sin                 22.4 C               24.0 C
Stanley                      22.2 C               23.6 C
Kwun Tong                    22.5 C               24.3 C
Sham Shui Po                 22.8 C               24.4 C
Kai Tak Runway Park          22.5 C               24.7 C
Yuen Long Park               22.0 C               24.2 C
Tai Mei Tuk               22.0 C               23.5 C

Duration of sunshine (King's Park):              0.0 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 2.
Sea surface temperature (Waglan Island):        23.2 C 

Yesterday's (25 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 25 Apr
     2003copy right image | Important notices | Privacy policy Last revision date: <26 Apr 2018> 

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