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Bulletin issued at 19:02 HKT 23/Mar/2018

At 7 p.m. at the Hong Kong Observatory the air temperature was 21 degrees Celsius and the relative humidity 65 per cent.

Please be reminded that:

The Fire Danger Warning is Red and the fire risk is extreme.

The air temperatures at other places were:

Wong Chuk Hang 21 degrees;
Ta Kwu Ling 20 degrees;
Tai Po 20 degrees;
Cheung Chau 19 degrees;
Chek Lap Kok 22 degrees;
Tsing Yi 22 degrees;
Shek Kong 21 degrees;
Tsuen Wan Ho Koon 19 degrees;
Tsuen Wan Shing Mun Valley 20 degrees;
Hong Kong Park 20 degrees;
Shau Kei Wan 19 degrees;
Happy Valley 19 degrees;
Wong Tai Sin 20 degrees;
Stanley 19 degrees;
Sham Shui Po 21 degrees;
Kai Tak Runway Park 20 degrees;
Yuen Long Park 22 degrees;
Tai Mei Tuk 18 degrees.


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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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 18:45 HKT 23/Mar/2018

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

A dry northeast monsoon is bringing fine weather to Guangdong. Locally, the relative humidity over the territory stayed below 50 per cent in the afternoon.

Weather forecast for tonight and tomorrow

Fine at first. The minimum temperature in the urban areas will be about 19 degrees, and a few degrees lower in the New Territories. Sunny periods tomorrow with a maximum temperature of around 24 degrees. Moderate easterly winds, fresh at times.

Outlook : Sunny intervals on Sunday. Mainly fine in the following couple of days.


(The above forecast period is valid up to 23:59 HKT tomorrow, 24/03/2018; 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 09:00 HKT 23/Mar/2018

GALE WARNING AREAS: BALINTANG AND SCARBOROUGH.

GENERAL SITUATION AT 222100 UTC:
THE NORTHEAST MONSOON IS AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 230100 UTC:

HONG KONG= E TO NE 4-5, OCNL 6. FINE. SEA UP TO 3 M. SWELL NE UP TO 2 M. TEMP 24-19 C. =
KWANGTUNG= E TO NE 5-6. FINE. SEA 2-3 M. SWELL NE 2 M. =
TAIWAN STRAIT= E TO NE 5-6. FINE. SEA 2-3 M. SWELL NE 2 M. =
BASHI= E TO NE 6-7. LGT RAIN PATCHES LATER. SEA 3-4 M. SWELL NE 2-3 M. =
PRATAS= E TO NE 5-6, OCNL 7. FINE. SEA UP TO 4 M. SWELL NE 2 M. =
BALINTANG= E TO NE 7-8. LGT RAIN PATCHES. SEA 4-6 M. SWELL NE 2-3 M. =
SCARBOROUGH= E TO NE 7-8. FINE. SEA 4-6 M. SWELL NE 2-3 M. =
PARACEL= E TO NE 5-6, OCNL 7. FINE. SEA UP TO 4 M. SWELL NE 2-3 M. =
TONKIN= E TO NE 4-5. DOWN TO 4000 M IN MORNING MIST PATCHES. SEA UP TO 2 M. =
DANANG= E TO NE 4-5, OCNL 6. FINE. SEA UP TO 3 M. SWELL 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
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    • 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 19:30 HKT 23/Mar/2018

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 7:30 p.m. on 23 March 2018

    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 force 5, occasionally force 6.
    Moderate to rough seas.

    Nan'ao and Shanwei:
    East to northeast force 6 to 7.
    Moderate to rough seas.

    South of Hong Kong:
    East force 5 to 6.
    Moderate to rough seas.

    Shangchuan Dao:
    East force 4 to 5, occasionally force 6.
    Moderate to rough seas.

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

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

    Waglan Island Wind east-northeast force 4
      Visibility 21 Kilometres

    Shantou Wind south-southeast force 3
      Visibility 22 Kilometres

    Dongsha Wind east force 4
      Visibility 10 Kilometres

    Macau Wind southeast force 2
      Visibility 14 Kilometres

    Xisha Wind east-northeast force 2
      Visibility 20 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 23/MAR/2018
    (Next update at 01:30 HKT 24/MAR/2018)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     NIL.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     THE 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:  080/10
       OFFSHORE:  080/15-20                            23-18
   B.   2000 FT:  130/15-20                            15
   C.   5000 FT:  120/20                               12
   D.  10000 FT:  260/10                               5
   E.  18000 FT:  280/30                               MS9
   F.  24000 FT:  280/50                               MS21
   G.  30000 FT:  280/80                               MS32
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      2100 - 2300 FT.
   I. WEATHER       : 
      MAINLY FINE.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 2500 FT  SCT 4000 FT.
   K. VISIBILITY    : 10 KM.
   L. 0 DEG. C LEVEL: 12500 FT      10 DEG. C LEVEL(S) : 5400 FT
   M. TURBULENCE    : MOD OFFSHORE AND NEAR HILLS.
   N. SEA STATE     : 2.0 M         SEA TEMPERATURE    : 19 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE EASTERLY WINDS, FRESH AT TIMES
     OFFSHORE.  SUNNY PERIODS.=

    ===================================================================
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 12:37 HKT on 20 Mar 18

    VHHK SIGMET 1 VALID 200040/200440 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N2100 E11730 - N1948 E11630 - N1800 E11254 - N1930 E11130 - N1948 E11130 - N2130 E11730 - N2100 E11730 TOP FL380 MOV ENE 20KT NC= VHHK SIGMET 2 VALID 200440/200840 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N2130 E11730 - N1706 E11336 - N1842 E11212 - N2324 E11730 - N2130 E11730 TOP FL350 MOV E 20KT 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 23/Mar/2018 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     24.1 C
Minimum Air Temperature                     16.2 C
Grass Minimum Temperature                   14.3 C
Relative Humidity                        50 - 71 Percent
Rainfall                                       0 mm 
Total rainfall since 1st January            89.4 mm
Against an average of                      124.1 mm

Other Stations                Min                  Max
King's Park                  15.3 C               23.1 C
Wong Chuk Hang               15.8 C               22.8 C
Ta Kwu Ling                   8.8 C               25.0 C
Lau Fau Shan                 12.9 C               22.2 C
Tai Po                       12.7 C               22.2 C
Sha Tin                      13.5 C               23.6 C
Tuen Mun                     14.9 C               23.6 C
Tseung Kwan O                12.4 C               23.3 C
Sai Kung                     15.2 C               21.8 C
Cheung Chau                  14.2 C               23.4 C
Chek Lap Kok                 15.1 C               23.2 C
Tsing Yi                     15.2 C               23.5 C
Shek Kong                    12.2 C               26.0 C
Tsuen Wan Ho Koon            12.7 C               23.0 C
Tsuen Wan Shing Mun Valley   14.5 C               24.5 C
Hong Kong Park               15.5 C               22.8 C
Shau Kei Wan                 14.9 C               22.1 C
Kowloon City                 15.0 C               23.4 C
Happy Valley                 14.3 C               24.0 C
Wong Tai Sin                 14.7 C               23.6 C
Stanley                      15.8 C               21.5 C
Kwun Tong                    15.4 C               22.5 C
Sham Shui Po                 14.7 C               23.2 C
Kai Tak Runway Park          16.2 C               21.0 C
Yuen Long Park               13.1 C               25.2 C
Tai Mei Tuk               14.2 C               24.1 C

Duration of sunshine (King's Park):              10.7 H
The mean UV index recorded at King's Park yesterday was 4,
the UV intensity was Moderate.
The maximum UV index for yesterday was 7.
Sea surface temperature (Waglan Island):        19.8 C 

Yesterday's (22 Mar 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 22 Mar
     2003copy right image | Important notices | Privacy policy Last revision date: <23 Mar 2018> 

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