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Bulletin issued at 05:02 HKT 11/Mar/2018

At 5 a.m. at the Hong Kong Observatory the air temperature was 16 degrees Celsius and the relative humidity 78 per cent.

The air temperatures at other places were:

King's Park 15 degrees;
Wong Chuk Hang 15 degrees;
Ta Kwu Ling 13 degrees;
Lau Fau Shan 13 degrees;
Tai Po 15 degrees;
Sha Tin 14 degrees;
Tuen Mun 14 degrees;
Tseung Kwan O 15 degrees;
Sai Kung 15 degrees;
Cheung Chau 15 degrees;
Chek Lap Kok 16 degrees;
Tsing Yi 15 degrees;
Shek Kong 15 degrees;
Tsuen Wan Ho Koon 12 degrees;
Tsuen Wan Shing Mun Valley 14 degrees;
Hong Kong Park 15 degrees;
Shau Kei Wan 15 degrees;
Kowloon City 14 degrees;
Happy Valley 16 degrees;
Wong Tai Sin 15 degrees;
Stanley 15 degrees;
Kwun Tong 15 degrees;
Sham Shui Po 15 degrees;
Kai Tak Runway Park 16 degrees;
Yuen Long Park 12 degrees;
Tai Mei Tuk 14 degrees.


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


Climatological Information for 11 Mar

Regional Weather in Hong Kong

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Hong Kong Climatology


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Bulletin updated at 04:45 HKT 11/Mar/2018

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

The northeast monsoon is bringing fine weather to southern China.

Weather forecast for today

Mainly fine. Cool in the morning. Dry during the day with a maximum temperature of around 21 degrees. Moderate east to northeasterly winds, fresh offshore at first.

Outlook : Becoming humid with fog in the next couple of days. A few showers midweek this week.


(The above forecast period is valid up to 23:59 HKT today, 11/03/2018; 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 21:00 HKT 10/Mar/2018

GALE WARNING AREAS: PRATAS, BALINTANG AND SCARBOROUGH.

GENERAL SITUATION AT 100900 UTC:
AN INTENSE NORTHEAST MONSOON IS GENERALLY AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 101300 UTC:

HONG KONG= E TO NE 5-6, OCNL 7. FINE. SEA UP TO 4 M. SWELL NE 2 M. TEMP 15-21 C. =
KWANGTUNG= E TO NE 6-7. FINE. SEA 3-4 M. SWELL NE 2-3 M. =
TAIWAN STRAIT= NE 6-7. FINE. SEA 3-4 M. SWELL N TO NE 3 M. =
BASHI= E TO NE 6-7. FINE. SEA 3-4 M. SWELL N TO NE 3-4 M. =
PRATAS= E TO NE 6-7, OCNL 8. FINE. SEA UP TO 6 M. SWELL N TO NE 3-4 M. =
BALINTANG= E TO NE 7-8. FINE. SEA 4-6 M. SWELL N TO NE 3-4 M. =
SCARBOROUGH= NE 7-8. FINE. SEA 4-6 M. SWELL N TO NE 3-4 M. =
PARACEL= E TO NE 5-6, OCNL 7. FINE. SEA UP TO 4 M. SWELL NE 3-4 M. =
TONKIN= E 5-6. FINE. SEA 2-3 M. SWELL NE 2 M. =
DANANG= E 5-6. LGT RAIN PATCHES. SEA 2-3 M. SWELL NE 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
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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
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    Bulletin issued at 05:30 HKT 11/Mar/2018

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 5:30 a.m. on 11 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 to northeast force 5 to 6, occasionally force 7.
    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, occasionally force 7.
    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 5
      Visibility 14 Kilometres

    Shantou Wind east-northeast force 2
      Visibility 27 Kilometres

    Dongsha Wind east-northeast force 4
      Visibility 10 Kilometres

    Huangmaozhou Wind east force 6

    Macau Wind east force 3
      Visibility 13 Kilometres

    Xisha Wind east-northeast force 2
      Visibility 16 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 01:30 HKT 11/MAR/2018
    (Next update at 9:00-9:30 HKT 11/MAR/2018)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     STRONG WINDS AND SEV TURB.
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 0200 TO 1200 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  080/5-10
       OFFSHORE:  080/15-20, OCNL 25                   15-22
   B.   2000 FT:  100/15-20, OCNL 25                   12
   C.   5000 FT:  100/10                               11
   D.  10000 FT:  320/15                               5
   E.  18000 FT:  280/35                               MS10
   F.  24000 FT:  260/70                               MS16
   G.  30000 FT:  260/80                               MS27
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      2000-2700 FT, 3700-4200 FT.
   I. WEATHER       : 
      MAINLY FINE.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 3000 FT.
   K. VISIBILITY    : 10 KM.
   L. 0 DEG. C LEVEL: 13500 FT      10 DEG. C LEVEL(S) : 5800 FT
   M. TURBULENCE    : MOD TO SEV OFFSHORE AND NEAR HILLS.
   N. SEA STATE     : 2.0-3.0 M     SEA TEMPERATURE    : 18 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE EAST TO NORTHEASTERLY WINDS, FRESH OFFSHORE.
     MAINLY FINE.=

    ===================================================================
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 15:35 HKT on 22 Feb 18

    VHHK SIGMET 1 VALID 220735/221135 VHHH- VHHK HONG KONG FIR SEV ICE FCST N OF N2030 AND E OF E11300 FL130/210 MOV E 10KT 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 11/Mar/2018 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     20.3 C
Minimum Air Temperature                     13.7 C
Grass Minimum Temperature                   12.6 C
Relative Humidity                        40 - 83 Percent
Rainfall                                       0 mm 
Total rainfall since 1st January            87.0 mm
Against an average of                       98.7 mm

Other Stations                Min                  Max
King's Park                  12.6 C               20.3 C
Wong Chuk Hang               11.3 C               19.8 C
Ta Kwu Ling                   7.3 C               21.9 C
Lau Fau Shan                  9.9 C               20.2 C
Tai Po                       11.2 C               20.4 C
Sha Tin                       9.7 C               20.5 C
Tuen Mun                     10.9 C               20.6 C
Tseung Kwan O                10.5 C               19.8 C
Sai Kung                     11.6 C               18.2 C
Cheung Chau                  12.7 C               20.7 C
Chek Lap Kok                 13.4 C               20.9 C
Tsing Yi                     12.0 C               21.8 C
Shek Kong                     9.3 C               23.2 C
Tsuen Wan Ho Koon             9.4 C               21.7 C
Tsuen Wan Shing Mun Valley   10.2 C               22.3 C
Hong Kong Park               13.4 C               20.9 C
Shau Kei Wan                 12.1 C               19.3 C
Kowloon City                 11.9 C               21.4 C
Happy Valley                 12.1 C               20.6 C
Wong Tai Sin                 12.4 C               20.4 C
Stanley                      13.2 C               18.7 C
Kwun Tong                    12.4 C               18.8 C
Sham Shui Po                 12.1 C               21.1 C
Kai Tak Runway Park          13.2 C               18.5 C
Yuen Long Park                9.3 C               22.7 C
Tai Mei Tuk               11.9 C               21.6 C

Duration of sunshine (King's Park):              10.8 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 8.
Sea surface temperature (Waglan Island):        17.7 C 

Yesterday's (10 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                               0.10
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 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 10 Mar
     2003copy right image | Important notices | Privacy policy Last revision date: <11 Mar 2018> 

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