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Bulletin issued at 11:02 HKT 25/Mar/2019

At 11 a.m. at the Hong Kong Observatory the air temperature was 21 degrees Celsius and the relative humidity 85 per cent.
During the past hour the mean UV Index recorded at King's Park was 5. The intensity of UV radiation was moderate.

The air temperatures at other places were:

King's Park 22 degrees;
Wong Chuk Hang 22 degrees;
Ta Kwu Ling 20 degrees;
Lau Fau Shan 20 degrees;
Tai Po 19 degrees;
Sha Tin 20 degrees;
Tuen Mun 21 degrees;
Tseung Kwan O 21 degrees;
Sai Kung 20 degrees;
Cheung Chau 22 degrees;
Chek Lap Kok 20 degrees;
Tsing Yi 21 degrees;
Shek Kong 19 degrees;
Tsuen Wan Ho Koon 20 degrees;
Tsuen Wan Shing Mun Valley 22 degrees;
Hong Kong Park 22 degrees;
Shau Kei Wan 21 degrees;
Kowloon City 23 degrees;
Happy Valley 23 degrees;
Wong Tai Sin 23 degrees;
Stanley 21 degrees;
Kwun Tong 22 degrees;
Sham Shui Po 21 degrees;
Kai Tak Runway Park 22 degrees;
Yuen Long Park 20 degrees;
Tai Mei Tuk 21 degrees.


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


Climatological Information for 25 Mar

Regional Weather in Hong Kong

Information on Tropical Cyclones

Hong Kong Climatology


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Bulletin updated at 10:45 HKT 25/Mar/2019

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

A cool northeast monsoon is affecting Guangdong. Meanwhile, a band of clouds is bringing rainy weather to the region.

Weather forecast for today

Mainly cloudy with a few rain patches. Visibility relatively low in some areas at first. Moderate to fresh northeasterly winds.

Outlook : Temperatures rising with sunny periods in the next couple of days.


(The above forecast period is valid up to 23:59 HKT today, 25/03/2019; 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 09:00 HKT 25/Mar/2019

N0 WARNING.

GENERAL SITUATION AT 242100 UTC:
THE NORTHEAST MONSOON IS AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 250100 UTC:

HONG KONG= E TO NE 5-6, OCNL 7. DOWN TO 4000 M IN MIST OR RAIN PATCHES. SEA UP TO 4 M. SWELL NE 2 M. TEMP 20-19 C. =
KWANGTUNG= E TO NE 6-7. DOWN TO 4000 M IN MIST PATCHES. SEA 3-4 M. SWELL NE 2-3 M. =
TAIWAN STRAIT= NE 6-7. ISOL SHOWERS AND TS. SEA 3-4 M. SWELL NE 3 M. =
BASHI= E TO NE 5-6. LGT RAIN PATCHES. SEA 2-3 M. SWELL N TO NE 3 M. =
PRATAS= E TO NE 5-6. LGT RAIN PATCHES. SEA 2-3 M. SWELL NE 2-3 M. =
BALINTANG= E TO NE 5-6. LGT RAIN PATCHES. SEA 2-3 M. SWELL N TO NE 3 M. =
SCARBOROUGH= NE 5-6. RAIN PATCHES. SEA 2-3 M. SWELL NE 3 M. =
PARACEL= E TO NE 5-6. DOWN TO 4000 M IN MIST PATCHES. SEA 2-3 M. SWELL NE 2-3 M. =
TONKIN= NE 4-5, OCNL 6. DOWN TO 2000 M IN MIST PATCHES. SEA UP TO 3 M. SWELL NE UP TO 2 M. =
DANANG= E TO NE 4-5. DOWN TO 2000 M IN MIST PATCHES. SEA UP TO 2 M. SWELL NE 2-3 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 25/Mar/2019

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 9:30 a.m. on 25 March 2019

    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:
    East to northeast force 5 to 6, occasionally force 7.
    A few rain patches. Mist patches.
    Moderate to rough seas.

    Nan'ao, Shanwei and South of Hong Kong:
    East to northeast force 6 to 7.
    Rough seas.

    Shangchuan Dao:
    East to northeast force 5 to 6.
    Moderate to rough seas.

    Outlook for the next 48 hours
    East to southeasterly winds of force 5 to 6.

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

    Waglan Island Wind north-northeast force 3
      Visibility 16 Kilometres

    Shantou Wind south-southwest force 1
      Visibility 8 Kilometres

    Dongsha Wind east force 3
      Visibility 10 Kilometres

    Huangmaozhou Wind north force 4

    Macau Wind north force 2
      Visibility 600 Metres in fog

    Xisha Wind east-northeast force 1
      Visibility 13 Kilometres

  • Explanation of Seas or Sea Waves
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  • Visibility Readings in Hong Kong Waters
  • Map showing forecast areas
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    • WEATHER FORECAST FOR LOCAL AVIATION
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    Weather Forecast for Local Aviation

    Bulletin issued at 09:30 HKT 25/MAR/2019
    (Next update at 12:30 HKT 25/MAR/2019)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     NIL.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     A NORTHEAST MONSOON 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:  020/10
       OFFSHORE:  030/15-20                            16-20
   B.   2000 FT:  100/10-15                            15
   C.   5000 FT:  210/20                               14
   D.  10000 FT:  280/20                               6
   E.  18000 FT:  270/40                               MS5
   F.  24000 FT:  250/65                               MS15
   G.  30000 FT:  270/75                               MS26
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      2000-3600 FT.
   I. WEATHER       : 
      CLOUDY WITH RAIN PATCHES.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 800 FT  SCT 1500 FT  BKN 6000 FT.
   K. VISIBILITY    : 7 KM. TEMPO 2000 M IN RAIN.
   L. 0 DEG. C LEVEL: 13500 FT      10 DEG. C LEVEL(S) : 7800 FT
   M. TURBULENCE    : MOD OFFSHORE AND NEAR HILLS.
   N. SEA STATE     : 2.0-3.0 M     SEA TEMPERATURE    : 21 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE NORTH TO NORTHEASTERLY
     WINDS,OCCASIONALLY FRESH OFFSHORE. CLOUDY WITH
     OCCASIONAL RAIN.=

    ===================================================================
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.

    There is no Significant Weather Information (SIGMET)

    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 25/Mar/2019 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     18.2 C
Minimum Air Temperature                     16.6 C
Grass Minimum Temperature                   17.7 C
Relative Humidity                        82 - 94 Percent
Rainfall                                     0.3 mm 
Total rainfall since 1st January           244.3 mm
Against an average of                      132.3 mm

Other Stations                Min                  Max
King's Park                  15.8 C               17.6 C
Wong Chuk Hang               16.4 C               18.3 C
Ta Kwu Ling                  13.8 C               18.0 C
Lau Fau Shan                 13.9 C               17.5 C
Tai Po                       15.0 C               17.6 C
Sha Tin                      15.2 C               17.9 C
Tuen Mun                     14.9 C               18.5 C
Tseung Kwan O                15.2 C               17.3 C
Sai Kung                     15.4 C               18.0 C
Cheung Chau                  16.1 C               18.0 C
Chek Lap Kok                 15.3 C               19.5 C
Tsing Yi                     16.5 C               18.6 C
Shek Kong                    14.4 C               18.6 C
Tsuen Wan Ho Koon            15.4 C               17.3 C
Tsuen Wan Shing Mun Valley   16.2 C               18.2 C
Hong Kong Park               15.9 C               18.1 C
Shau Kei Wan                 15.2 C               17.3 C
Kowloon City                 15.7 C               17.5 C
Happy Valley                 16.3 C               18.2 C
Wong Tai Sin                 16.0 C               18.0 C
Stanley                      16.2 C               17.6 C
Kwun Tong                    15.1 C               17.3 C
Sham Shui Po                 16.0 C               18.6 C
Kai Tak Runway Park          16.2 C               18.0 C
Yuen Long Park               14.2 C               18.3 C
Tai Mei Tuk               14.7 C               17.6 C

Duration of sunshine (King's Park):              0 H
The mean UV index recorded at King's Park yesterday was 0.8,
the UV intensity was Low.
The maximum UV index for yesterday was 3.
 

Yesterday's (24 Mar 2019) average ambient gamma radiation
dose rate taken outdoors in Hong Kong ranged from 0.09 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                           0.09
Tap Mun                             0.09
Kat O                               0.11
Yuen Ng Fan                         0.12
Tai Mei Tuk                         0.12
Sha Tau Kok                         0.11
Kwun Tong                           0.13
Sai Wan Ho                          0.10
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 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 24 Mar
     2003copy right image | Important notices | Privacy policy Last revision date: <25 Mar 2019> 

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