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Bulletin issued at 10:02 HKT 24/Mar/2017

At 10 a.m. at the Hong Kong Observatory the air temperature was 20 degrees Celsius and the relative humidity 80 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 20 degrees;
Wong Chuk Hang 21 degrees;
Ta Kwu Ling 22 degrees;
Lau Fau Shan 26 degrees;
Tai Po 21 degrees;
Sha Tin 20 degrees;
Tuen Mun 22 degrees;
Tseung Kwan O 19 degrees;
Sai Kung 19 degrees;
Cheung Chau 20 degrees;
Chek Lap Kok 22 degrees;
Tsing Yi 22 degrees;
Shek Kong 23 degrees;
Tsuen Wan Ho Koon 21 degrees;
Tsuen Wan Shing Mun Valley 22 degrees;
Hong Kong Park 20 degrees;
Shau Kei Wan 19 degrees;
Kowloon City 20 degrees;
Happy Valley 22 degrees;
Wong Tai Sin 21 degrees;
Stanley 19 degrees;
Kwun Tong 19 degrees;
Sham Shui Po 21 degrees;
Kai Tak Runway Park 20 degrees;
Yuen Long Park 25 degrees;
Tai Mei Tuk 20 degrees.


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


Climatological Information for 24 Mar

Regional Weather in Hong Kong

Information on Tropical Cyclones

Hong Kong Climatology


Local Weather Forecast
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Local Weather Forecast

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

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UV Index Forecast |  Weather Information for South China Coastal Waters

Bulletin updated at 09:45 HKT 24/Mar/2017

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

An easterly airstream is affecting the south China coastal areas.

Weather forecast for today

Sunny periods. Misty with one or two light rain patches tonight. Moderate easterly winds, fresh at first.

Outlook : Temperatures falling significantly later tomorrow. Rather cool with rain on Sunday. Weather improving early next week.


(The above forecast period is valid up to 23:59 HKT today, 24/03/2017; Regular update at : around 45 minutes past each hour, 16:15 HKT and 23:15 HKT)

Information on Tropical Cyclones

Marine Weather Information and Forecast

Weather Information for Aviation

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MARINE FORECAST
Traditional Chinese Simplified Chinese

Marine Forecast

Weather Information for the Marine Community

Bulletin issued at 09:00 HKT 24/Mar/2017

N0 WARNING.

GENERAL SITUATION AT 232100 UTC:
AN EASTERLY AIRSTREAM IS GENERALLY AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 240100 UTC:

HONG KONG= E 4-5, OCNL 6. DOWN TO 4000 M IN MIST OR LIGHT RAIN PATCHES. SEA 2 M. TEMP 23-19 C. =
KWANGTUNG= E TO NE 4-5, OCNL 6. DOWN TO 4000 M IN MIST OR RAIN PATCHES. SEA 2 M. SWELL E TO NE 2 M. =
TAIWAN STRAIT= NE 5-6. RAIN PATCHES. SEA 2-3 M. SWELL NE 2 M. =
BASHI= E 5-6. RAIN PATCHES. SEA 2-3 M. =
PRATAS= E 4-5. CLD. SEA UP TO 2 M. =
BALINTANG= E 5-6. RAIN PATCHES. SEA 2-3 M. =
SCARBOROUGH= E TO NE 4-5. CLD. SEA UP TO 2 M. =
PARACEL= E TO SE 4-5. DOWN TO 4000 M IN MIST OR RAIN PATCHES IN N. SEA UP TO 2 M. =
TONKIN= E TO SE 4-5, N TO NE 6 LATER. DOWN TO 4000 M IN MIST OR RAIN PATCHES. SEA 2 M, UP TO 3 M LATER. =
DANANG= E TO SE 4-5. DOWN TO 4000 M IN MIST OR RAIN 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 24/Mar/2017

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 9:30 a.m. on 24 March 2017

    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.
    A few light rain patches and mist patches.
    Moderate to rough seas.

    Nan'ao:
    East to northeast force 4 to 5, occasionally force 6.
    Moderate to rough seas.

    Shanwei and South of Hong Kong:
    East force 4 to 5, occasionally force 6.
    Moderate to rough seas.

    Shangchuan Dao:
    East force 4 to 5.
    Moderate seas.

    Outlook for the next 48 hours
    North to northeasterly winds of force 6 to 7.

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

    Waglan Island Wind east force 5
      Visibility 12 Kilometres

    Shantou Wind east-northeast force 1
      Visibility 23 Kilometres

    Dongsha Wind northeast force 4
      Visibility 10 Kilometres

    Huangmaozhou Wind east-northeast force 7

    Macau Wind east-southeast force 3
      Visibility 11 Kilometres

    Xisha Wind east-northeast force 2
      Visibility 25 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 09:30 HKT 24/MAR/2017
    (Next update at 17:30 HKT 24/MAR/2017)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     NIL
II.  SYNOPSIS OF THE WEATHER SITUATION :
     AN EASTERLY AIRSTREAM IS AFFECTING THE SOUTH
     CHINA COASTAL AREAS.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1000 TO 2000 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  090/10-15
       OFFSHORE:  080/15-20                            22-25
   B.   2000 FT:  150/15                               17
   C.   5000 FT:  180/15                               14
   D.  10000 FT:  250/25                               8
   E.  18000 FT:  260/30                               MS7
   F.  24000 FT:  280/40                               MS18
   G.  30000 FT:  280/60                               MS31
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      1000-1400 FT,  1600-2400 FT
   I. WEATHER       : 
      SUNNY PERIODS DURING THE DAY. MAINLY CLOUDY
      WITH ONE OR TWO LIGHT RAIN PATCHES TONIGHT.
      LOCALIZED MIST.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 2000 FT  SCT 3500 FT
   K. VISIBILITY    : 9 KM. TEMPO 3500 M IN MIST/RAIN.
   L. 0 DEG. C LEVEL: 16000 FT      10 DEG. C LEVEL(S) : 6000, 7400, 7600 FT
   M. TURBULENCE    : MOD OFFSHORE AND NEAR HILLS
   N. SEA STATE     : 1.5-2.5 M     SEA TEMPERATURE    : 18 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE EASTERLY WINDS. MAINLY CLOUDY WITH ONE
     OR TWO LIGHT RAIN PATCHES. LOCALIZED 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 21:28 HKT on 22 Mar 17

    VHHK SIGMET 1 VALID 220930/221330 VHHH- VHHK HONG KONG FIR SEV ICE FCST N OF N2100 AND W OF E11530 FL160/200 MOV ENE 10KT WKN= VHHK SIGMET 2 VALID 221330/221730 VHHH- VHHK HONG KONG FIR SEV ICE FCST N OF N2100 AND E OF E11300 FL160/200 MOV ENE 10KT 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 24/Mar/2017 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     24.6 C
Minimum Air Temperature                     19.0 C
Grass Minimum Temperature                   18.9 C
Relative Humidity                        68 - 91 Percent
Rainfall                                     0.0 mm 
Total rainfall since 1st January            52.5 mm
Against an average of                      129.3 mm

Other Stations                Min                  Max
King's Park                  18.5 C               24.3 C
Wong Chuk Hang               19.5 C               23.8 C
Ta Kwu Ling                  18.9 C               24.7 C
Lau Fau Shan                 18.3 C               24.1 C
Tai Po                       18.8 C               23.4 C
Sha Tin                      19.2 C               24.3 C
Tuen Mun                     18.9 C               23.2 C
Tseung Kwan O                18.1 C               24.1 C
Sai Kung                     18.6 C               23.1 C
Cheung Chau                  18.3 C               22.2 C
Chek Lap Kok                 20.1 C               25.5 C
Tsing Yi                     19.4 C               25.2 C
Shek Kong                    18.7 C               25.2 C
Tsuen Wan Ho Koon            18.4 C               23.2 C
Tsuen Wan Shing Mun Valley   19.4 C               24.2 C
Hong Kong Park               18.6 C               23.8 C
Shau Kei Wan                 18.3 C               22.5 C
Kowloon City                 18.2 C               24.8 C
Happy Valley                 19.5 C               25.4 C
Wong Tai Sin                 19.1 C               24.9 C
Stanley                      18.7 C               22.5 C
Kwun Tong                    19.0 C               24.3 C
Sham Shui Po                 19.5 C               25.3 C
Kai Tak Runway Park          18.7 C               22.7 C
Yuen Long Park               18.6 C               25.4 C
Tai Mei Tuk               18.4 C               24.7 C

Duration of sunshine (King's Park):              4.0 H
The mean UV index recorded at King's Park yesterday was 3,
the UV intensity was Moderate.
The maximum UV index for yesterday was 6.
Sea surface temperature (Waglan Island):        18.5 C 

Yesterday's (23 Mar 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 23 Mar
     2003copy right image | Important notices | Privacy policy Last revision date: <24 Mar 2017> 

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