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Bulletin issued at 18:02 HKT 23/Mar/2019

At 6 p.m. at the Hong Kong Observatory the air temperature was 19 degrees Celsius and the relative humidity 95 per cent.
During the past hour the mean UV Index recorded at King's Park was 0.0. The intensity of UV radiation was low.

The air temperatures at other places were:

King's Park 19 degrees;
Wong Chuk Hang 19 degrees;
Ta Kwu Ling 17 degrees;
Lau Fau Shan 18 degrees;
Tai Po 18 degrees;
Sha Tin 18 degrees;
Tuen Mun 19 degrees;
Tseung Kwan O 19 degrees;
Sai Kung 18 degrees;
Cheung Chau 18 degrees;
Chek Lap Kok 19 degrees;
Tsing Yi 19 degrees;
Shek Kong 18 degrees;
Tsuen Wan Ho Koon 18 degrees;
Tsuen Wan Shing Mun Valley 19 degrees;
Hong Kong Park 19 degrees;
Shau Kei Wan 18 degrees;
Kowloon City 18 degrees;
Happy Valley 19 degrees;
Wong Tai Sin 19 degrees;
Stanley 19 degrees;
Kwun Tong 18 degrees;
Sham Shui Po 19 degrees;
Kai Tak Runway Park 19 degrees;
Yuen Long Park 18 degrees;
Tai Mei Tuk 17 degrees.

Between 4:45 and 5:45 p.m., the rainfall recorded in various regions were:

Tai Po 0 to 2 mm;
Islands District 0 to 2 mm;
Tuen Mun 0 to 2 mm;
Kwai Tsing 0 to 1 mm;
Eastern District 0 to 1 mm;
Sham Shui Po 1 mm;
North District 0 to 1 mm;
Wong Tai Sin 1 mm;
Yuen Long 0 to 1 mm;
Tsuen Wan 0 to 1 mm;
Sai Kung 0 to 1 mm;
Sha Tin 0 to 1 mm;
Yau Tsim Mong 1 mm;
Southern District 0 to 1 mm;
Kowloon City 0 to 1 mm;
Central & Western District 0 to 1 mm;
Kwun Tong 0 to 1 mm.


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


Climatological Information for 23 Mar

Regional Weather in Hong Kong

Information on Tropical Cyclones

Hong Kong Climatology


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Bulletin updated at 17:45 HKT 23/Mar/2019

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

The northeast monsoon is bringing cooler weather to Guangdong. Locally, temperatures in the afternoon were generally seven to eight degrees lower than those of yesterday.

Weather forecast for tonight and tomorrow

Cloudy and cooler with a few rain patches. Temperatures will range between 17 and 20 degrees. Fresh easterly winds, occasionally strong offshore.

Outlook : A few rain patches on Monday. Temperatures rising gradually in the following few days.


(The above forecast period is valid up to 23:59 HKT tomorrow, 24/03/2019; 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 23/Mar/2019

GALE WARNING AREAS: HONG KONG, KWANGTUNG, TAIWAN STRAIT, BASHI, PRATAS, BALINTANG AND SCARBOROUGH.

GENERAL SITUATION AT 222100 UTC:
COLD FRONT 21N 109E 22N 113E 20N 116E 20N 121E S SLOWLY.

MARINE FORECAST FOR 24 HOURS FROM 230100 UTC:

HONG KONG= E 6-7, OCNL 8. A FEW SHOWERS AND TS. SEA UP TO 6 M. SWELL E TO NE 2 M. TEMP 21-17 C. =
KWANGTUNG= E TO NE 7-8. ISOL SHOWERS AND TS. SEA 4-6 M. SWELL NE 2-3 M. =
TAIWAN STRAIT= NE 7-8. ISOL SHOWERS AND TS. SEA 4-6 M. SWELL NE 3 M. =
BASHI= E TO NE 6-7, OCNL 8. ISOL SHOWERS. SEA UP TO 6 M. SWELL E TO NE 2-3 M. =
PRATAS= E TO NE 6-7, OCNL 8. ISOL SHOWERS. SEA UP TO 6 M. SWELL E TO NE 2-3 M. =
BALINTANG= E TO NE 6-7, OCNL 8. FINE. SEA UP TO 6 M. SWELL E TO NE 2-3 M. =
SCARBOROUGH= NE 5-6, BEC 7-8. FINE. SEA 2-3 M, BEC 4-6 M. SWELL NE 2 M. =
PARACEL= E TO SE 5-6, OCNL 7. ISOL SHOWERS AND TS. SEA UP TO 4 M. SWELL E TO NE 2 M. =
TONKIN= N TO NE 5-6, OCNL 7. ISOL SHOWERS AND TS. DOWN TO 2000 M IN MIST PATCHES. SEA UP TO 4 M. =
DANANG= E TO SE 4-5, OCNL 6. DOWN TO 2000 M IN MIST OR RAIN PATCHES. SEA UP TO 4 M. SWELL E TO NE 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 16:30 HKT 23/Mar/2019

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 4:30 p.m. on 23 March 2019

    Warnings:
    Gale force winds in all areas.

    Weather Situation:
    An intense northeast monsoon is affecting the south China coastal waters.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    East to northeast force 6 to 7, occasionally force 8.
    Isolated showers and thunderstorms. Mist patches.
    Rough to very rough seas.

    Nan'ao and Shanwei:
    East to northeast force 7 to 8.
    Rough to very rough seas.

    South of Hong Kong and Shangchuan Dao:
    East to northeast force 7 to 8.
    Isolated showers and thunderstorms.
    Rough to very rough seas.

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

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

    Waglan Island Wind east-northeast force 6
      Visibility 11 Kilometres

    Shantou Wind east-northeast force 3
      Visibility 30 Kilometres

    Dongsha Wind east force 3
      Visibility 10 Kilometres

    Huangmaozhou Wind east force 7

    Macau Wind north-northeast force 3
      Visibility 600 Metres in fog

    Xisha Wind east-southeast force 3
      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
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    • WEATHER FORECAST FOR LOCAL AVIATION
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    Weather Forecast for Local Aviation

    Bulletin issued at 17:30 HKT 23/MAR/2019
    (Next update at 01:30 HKT 24/MAR/2019)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     STRONG WINDS AND SEV TURB.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     AN INTENSE NORTHEAST MONSOON IS AFFECTING THE
     SOUTH CHINA COASTAL AREAS.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1800 TO 0400 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  040/10-15
       OFFSHORE:  080/20-25 OCNL 30                    19-17
   B.   2000 FT:  120/20 OCNL 25                       14
   C.   5000 FT:  180/10-15                            15
   D.  10000 FT:  290/20                               5
   E.  18000 FT:  270/30                               MS6
   F.  24000 FT:  260/55                               MS15
   G.  30000 FT:  250/60                               MS26
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      2100-2700 FT
   I. WEATHER       : 
      CLOUDY WITH RAIN PATCHES. LOCALISED MIST.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1000 FT SCT 2000 FT.
   K. VISIBILITY    : 7 KM. TEMPO 2500 M IN RAIN/MIST.
   L. 0 DEG. C LEVEL: 14500 FT      10 DEG. C LEVEL(S) : 7800 FT
   M. TURBULENCE    : MOD TO SEV OFFSHORE AND NEAR HILLS.
   N. SEA STATE     : 3.0-5.0 M     SEA TEMPERATURE    : 22 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE TO FRESH EASTERLIES,STRONG OFFSHORE.
     CLOUDY WITH RAIN PATCHES. 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.

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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 23/Mar/2019 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     27.5 C
Minimum Air Temperature                     24.8 C
Grass Minimum Temperature                   22.6 C
Relative Humidity                        79 - 89 Percent
Rainfall                                      Trace 
Total rainfall since 1st January           240.7 mm
Against an average of                      124.1 mm

Other Stations                Min                  Max
King's Park                  24.1 C               27.5 C
Wong Chuk Hang               23.7 C               26.3 C
Ta Kwu Ling                  22.4 C               28.4 C
Lau Fau Shan                 23.1 C               28.0 C
Tai Po                       21.9 C               28.0 C
Sha Tin                      23.3 C               28.2 C
Tuen Mun                     23.3 C               27.0 C
Tseung Kwan O                22.5 C               27.3 C
Sai Kung                     22.2 C               25.6 C
Cheung Chau                  22.6 C               26.9 C
Chek Lap Kok                 23.6 C               27.9 C
Tsing Yi                     23.8 C               27.2 C
Shek Kong                    22.8 C               28.9 C
Tsuen Wan Ho Koon            23.3 C               25.5 C
Tsuen Wan Shing Mun Valley   23.7 C               26.6 C
Hong Kong Park               24.5 C               27.1 C
Shau Kei Wan                 22.4 C               27.2 C
Kowloon City                 23.8 C               27.5 C
Happy Valley                 24.8 C               27.7 C
Wong Tai Sin                 23.9 C               27.8 C
Stanley                      23.1 C               27.2 C
Kwun Tong                    22.8 C               27.6 C
Sham Shui Po                 24.0 C               27.8 C
Kai Tak Runway Park          23.4 C               26.6 C
Yuen Long Park               22.7 C               28.5 C
Tai Mei Tuk               21.7 C               28.1 C

Duration of sunshine (King's Park):              0.9 H
The mean UV index recorded at King's Park yesterday was 1,
the UV intensity was Low.
The maximum UV index for yesterday was 4.
 

Yesterday's (22 Mar 2019) average ambient gamma radiation
dose rate taken outdoors in Hong Kong ranged from 0.08 to
0.14 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                             0.08
Kat O                               0.10
Yuen Ng Fan                         0.12
Tai Mei Tuk                         0.11
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                        0.14

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 22 Mar
     2003copy right image | Important notices | Privacy policy Last revision date: <23 Mar 2019> 

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