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Automatic Regional Weather Forecast in Hong Kong & Pearl River Delta Region

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Bulletin issued at 10:02 HKT 26/Apr/2017

At 10 a.m. at the Hong Kong Observatory the air temperature was 23 degrees Celsius and the relative humidity 93 per cent.
During the past hour the mean UV Index recorded at King's Park was 2. The intensity of UV radiation was low.

The air temperatures at other places were:

King's Park 24 degrees;
Wong Chuk Hang 25 degrees;
Ta Kwu Ling 24 degrees;
Lau Fau Shan 26 degrees;
Tai Po 23 degrees;
Sha Tin 24 degrees;
Tuen Mun 26 degrees;
Tseung Kwan O 23 degrees;
Sai Kung 23 degrees;
Cheung Chau 23 degrees;
Chek Lap Kok 27 degrees;
Tsing Yi 25 degrees;
Shek Kong 26 degrees;
Tsuen Wan Ho Koon 24 degrees;
Tsuen Wan Shing Mun Valley 25 degrees;
Hong Kong Park 24 degrees;
Shau Kei Wan 23 degrees;
Kowloon City 24 degrees;
Happy Valley 25 degrees;
Wong Tai Sin 25 degrees;
Stanley 24 degrees;
Kwun Tong 24 degrees;
Sham Shui Po 26 degrees;
Kai Tak Runway Park 24 degrees;
Yuen Long Park 26 degrees;
Tai Mei Tuk 23 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

Information on Tropical Cyclones

Hong Kong Climatology


Local Weather Forecast
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UV Index Forecast |  Weather Information for South China Coastal Waters

Bulletin updated at 09:45 HKT 26/Apr/2017

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

A humid southeasterly airstream is bringing mist to the coast of Guangdong. Meanwhile, showers and thunderstorms over western Guangdong are moving eastwards gradually.

Besides,the tropical depression over the seas east of the Philippines was named Muifa. At 10 a.m., Muifa was centred about 560 kilometres northwest of Yap. It is forecast to move west-northwest at about 14 kilometres per hour across the western North Pacific.

Weather forecast for today

Mainly cloudy and misty with a few showers. There will be isolated thunderstorms in the afternoon and tonight. Moderate east to southeasterly winds.

Outlook : Still showery tomorrow. The weather will improve in the following couple of days.


(The above forecast period is valid up to 23:59 HKT today, 26/04/2017; Regular update at : around 45 minutes past each hour, 16:15 HKT and 23:15 HKT)

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MARINE FORECAST
Traditional Chinese Simplified Chinese

Marine Forecast

Weather Information for the Marine Community

Bulletin issued at 09:00 HKT 26/Apr/2017

N0 WARNING.

GENERAL SITUATION AT 252100 UTC:
A SOUTHERLY AIRSTREAM IS AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 260100 UTC:

HONG KONG= S TO SE 4-5, NE 4-5 LATER. DOWN TO 2000 M IN MIST PATCHES. ISOL SHOWERS AND TS LATER. SEA 2 M. TEMP 26-21 C. =
KWANGTUNG= S TO SE 4-5, NE UP TO 7 IN E LATER. DOWN TO 2000 M IN MIST PATCHES. ISOL SHOWERS AND TS LATER. SEA 2 M, UP TO 4 M IN E LATER. =
TAIWAN STRAIT= S TO SE 4-5, NE 6-7 LATER. DOWN TO 2000 M IN MIST PATCHES. ISOL SHOWERS AND TS LATER. SEA 2 M, 3-4 M LATER. =
BASHI= S TO SE 4-5, NW 4-5 LATER. CLD. SEA 2 M. =
PRATAS= S TO SE 4-5, NW 4-5 LATER. RAIN PATCHES. SEA 2 M. =
BALINTANG= S TO SE 4-5, NW 4-5 LATER. FINE. SEA 2 M. =
SCARBOROUGH= SE 4-5, NW 4-5 LATER. FINE. SEA UP TO 2 M. =
PARACEL= S 4-5. DOWN TO 2000 M IN MIST PATCHES IN N. ISOL SHOWERS AND TS IN N LATER. SEA UP TO 2 M. =
TONKIN= S 4-5, NE 5 LATER. DOWN TO 2000 M IN MIST PATCHES. ISOL SHOWERS AND TS LATER. SEA UP TO 2 M. =
DANANG= S 4-5. DOWN TO 2000 M IN MIST PATCHES. 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 09:30 HKT 26/Apr/2017

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 9:30 a.m. on 26 April 2017

    Warnings:
    Strong winds in Nan'ao and Shanwei. Fog in Hong Kong adjacent waters.

    Weather Situation:
    A southerly airstream is affecting the south China coastal waters.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    South to southeast force 4 to 5, becoming northeast force 4 to 5 later.
    Fog patches. Isolated showers and thunderstorms later.
    Moderate seas.

    Nan'ao and Shanwei:
    East to southeast force 4 to 5, becoming northeast up to force 7 later.
    Isolated showers and thunderstorms.
    Moderate seas, becoming rough seas later.

    South of Hong Kong:
    South to southeast force 4 to 5, becoming northeast force 4 to 5 later.
    Isolated showers and thunderstorms.
    Moderate seas.

    Shangchuan Dao:
    South force 4 to 5, becoming northeast force 4 to 5 later.
    Isolated showers and thunderstorms.
    Moderate seas.

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

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

    Waglan Island Wind northeast force 3
      Visibility 2100 Metres

    Shantou Wind east-northeast force 1
      Visibility 4400 Metres in mist

    Dongsha Wind east-southeast force 2
      Visibility 10 Kilometres

    Huangmaozhou Wind east force 4

    Macau Wind south-southeast force 2
      Visibility 800 Metres in fog

    Xisha Wind south-southwest force 2
      Visibility 29 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
    Traditional Chinese Simplified Chinese

    Weather Forecast for Local Aviation

    Bulletin issued at 09:00 HKT 26/APR/2017
    (Next update at 17:30 HKT 26/APR/2017)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     ISOL CUNIM/TS AND ASSOCIATED HAZARDS.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     A HUMID SOUTHEASTERLY AIRSTREAM IS AFFECTING THE
     COAST OF GUANGDONG.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1000 TO 2000 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  120/10
                  TEMPO VRB/15G25 IN TS
       OFFSHORE:  120/15                               23-28
   B.   2000 FT:  190/15                               21
   C.   5000 FT:  220/15                               17
   D.  10000 FT:  240/20                               9
   E.  18000 FT:  250/25                               MS5
   F.  24000 FT:  260/30                               MS16
   G.  30000 FT:  270/45                               MS30
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      MAINLY CLOUDY WITH A FEW SHOWERS AND ISOLATED
      THUNDERSTORMS.  LOCALIZED MIST.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1200 FT  SCT 2500 FT  BKN 10000 FT.  TEMPO
      FEW CB 1000 FT  SCT 2000 FT  BKN 4000 FT.
   K. VISIBILITY    : 7 KM.  TEMPO 2000 M IN TS/SHOWERS/MIST.
   L. 0 DEG. C LEVEL: 15500 FT      10 DEG. C LEVEL(S) : 9600 FT
   M. TURBULENCE    : MOD TO SEV NEAR CUNIM/TS.
                      MOD OFFSHORE AND NEAR HILLS.
   N. SEA STATE     : 1.5-2.0 M     SEA TEMPERATURE    : 22 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE SOUTHEASTERLY WINDS, BECOMING MODERATE
     TO FRESH NORTHEASTERLY WINDS.  CLOUDY WITH A FEW
     SHOWERS AND ISOLATED THUNDERSTORMS.  LOCALIZED
     FOG/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 10:30 HKT on 26 Apr 17

    VHHK SIGMET 1 VALID 260230/260630 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N1942 E11130 - N2124 E11130 - N2230 E11342 - N2254 E11500 - N2042 E11506 - N1948 E11300 - N1942 E11130 TOP FL380 MOV E 10KT NC= VHHK SIGMET 5 VALID 252340/260340 VHHH- VHHK HONG KONG FIR EMBD TS FCST N OF N2000 AND W OF E11312 TOP FL360 MOV E 05KT 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/2017 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     22.9 C
Minimum Air Temperature                     20.7 C
Grass Minimum Temperature                   21.1 C
Relative Humidity                        85 - 98 Percent
Rainfall                                    10.9 mm 
Total rainfall since 1st January           128.1 mm
Against an average of                      308.2 mm

Other Stations                Min                  Max
King's Park                  20.2 C               22.5 C
Wong Chuk Hang               20.5 C               23.3 C
Ta Kwu Ling                  19.7 C               22.7 C
Lau Fau Shan                 19.4 C               23.6 C
Tai Po                       20.2 C               22.2 C
Sha Tin                      20.3 C               23.2 C
Tuen Mun                     20.6 C               23.5 C
Tseung Kwan O                19.9 C               22.2 C
Sai Kung                     20.2 C               22.5 C
Cheung Chau                  20.0 C               22.7 C
Chek Lap Kok                 21.0 C               25.1 C
Tsing Yi                     20.4 C               23.7 C
Shek Kong                    20.3 C               25.4 C
Tsuen Wan Ho Koon            19.7 C               22.3 C
Tsuen Wan Shing Mun Valley   20.5 C               23.2 C
Hong Kong Park               20.1 C               22.9 C
Shau Kei Wan                 20.1 C               22.3 C
Kowloon City                 20.0 C               22.4 C
Happy Valley                 20.8 C               24.1 C
Wong Tai Sin                 20.3 C               23.7 C
Stanley                      20.7 C               22.8 C
Kwun Tong                    20.3 C               22.7 C
Sham Shui Po                 20.6 C               24.6 C
Kai Tak Runway Park          20.9 C               23.2 C
Yuen Long Park               20.0 C               25.2 C
Tai Mei Tuk               19.5 C               22.1 C

Duration of sunshine (King's Park):              0 H
The mean UV index recorded at King's Park yesterday was 0.7,
the UV intensity was Low.
The maximum UV index for yesterday was 2.
 

Yesterday's (25 Apr 2017) 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                         0.14
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 during
the period 1987-2016, the background ambient gamma radiation
levels may vary between 0.06 and 0.30 microsievert per hour.

    2. The extent of health effects to a person as a result of
exposure to radiation is expressed by a physical quantity
called equivalent dose, in unit of sievert.  Protective
action may be required if there is an increase in the
ambient gamma dose rate above background such that the total
additional dose is expected to exceed 5000 microsieverts in
a relatively short period of time. For example, a dose of
5000 microsieverts may be reached when the ambient gamma
dose rate is 1000 microsieverts per hour (several thousand
times above background) and lasts for 5 hours.

    3. The readings of ambient gamma radiation level from
instrument are expressed in unit of gray, which is
numerically equal to the gamma dose expressed in sievert.
    Climatological Information for 25 Apr
     2003copy right image | Important notices | Privacy policy Last revision date: <26 Apr 2017> 

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