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Bulletin issued at 13:02 HKT 11/Mar/2018

At 1 p.m. at the Hong Kong Observatory the air temperature was 20 degrees Celsius and the relative humidity 55 per cent.
During the past hour the mean UV Index recorded at King's Park was 8. The intensity of UV radiation was very high.

Please be reminded that:

The Fire Danger Warning is Yellow and the fire risk is high.

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 20 degrees;
Tai Po 20 degrees;
Sha Tin 21 degrees;
Tuen Mun 21 degrees;
Tseung Kwan O 20 degrees;
Sai Kung 19 degrees;
Cheung Chau 21 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 21 degrees;
Shau Kei Wan 19 degrees;
Kowloon City 21 degrees;
Happy Valley 21 degrees;
Wong Tai Sin 21 degrees;
Stanley 19 degrees;
Kwun Tong 19 degrees;
Sham Shui Po 21 degrees;
Kai Tak Runway Park 19 degrees;
Yuen Long Park 23 degrees;
Tai Mei Tuk 23 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

Information on Tropical Cyclones

Hong Kong Climatology


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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 12:45 HKT 11/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 generally fell below 60 per cent around noon.

Weather forecast for this afternoon and tonight

Mainly fine. Dry in the afternoon. Moderate easterly winds.

Outlook : Temperatures will continue to rise and it will become humid with fog gradually in the next few days. Some 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)

Information on Tropical Cyclones

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MARINE FORECAST
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Marine Forecast

Weather Information for the Marine Community

Bulletin issued at 09:00 HKT 11/Mar/2018

GALE WARNING AREAS: BASHI, PRATAS, BALINTANG AND SCARBOROUGH.

GENERAL SITUATION AT 102100 UTC:
AN INTENSE NORTHEAST MONSOON IS GENERALLY AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 110100 UTC:

HONG KONG= E 5-6, OCNL 7. FINE. SEA UP TO 4 M. SWELL NE 2 M. TEMP 21-17 C. =
KWANGTUNG= E TO NE 5-6, OCNL 7. FINE. SEA UP TO 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, OCNL 8. FINE. SEA UP TO 6 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. LGT RAIN PATCHES. SEA 4-6 M. SWELL N TO NE 3-4 M. =
SCARBOROUGH= E TO NE 7-8. FINE. SEA 4-6 M. SWELL N TO NE 3-4 M. =
PARACEL= E 5-6, OCNL 7. FINE. SEA UP TO 4 M. SWELL NE 3 M. =
TONKIN= E 4-5. FINE. SEA UP TO 2 M. SWELL NE 2 M. =
DANANG= E 4-5, OCNL 6. FINE. SEA UP TO 3 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 12:30 HKT 11/Mar/2018

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 12:30 p.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 force 5 to 6.
    Moderate to rough seas.

    Nan'ao and Shanwei:
    East to northeast force 5 to 6, occasionally force 7.
    Moderate to rough seas.

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

    Outlook for the next 48 hours
    East to southeasterly winds of force 4 to 5, occasionally force 6. Fog patches later.

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

    Waglan Island Wind northeast force 4
      Visibility 16 Kilometres

    Shantou Wind north-northeast force 2
      Visibility 28 Kilometres

    Dongsha Wind east force 4
      Visibility 10 Kilometres

    Huangmaozhou Wind east-northeast force 4

    Macau Wind northeast force 2
      Visibility 16 Kilometres

    Xisha Wind east-northeast force 3
      Visibility 21 Kilometres

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

    Bulletin issued at 12:30 HKT 11/MAR/2018
    (Next update at 17:30 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 1300 TO 2300 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  090/10
       OFFSHORE:  080/15-20, OCNL 25                   23-17
   B.   2000 FT:  100/20-25                            10
   C.   5000 FT:  140/10                               11
   D.  10000 FT:  310/15                               4
   E.  18000 FT:  270/25                               MS10
   F.  24000 FT:  270/65                               MS17
   G.  30000 FT:  260/80                               MS27
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      2300-3400 FT, 3600-4300 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) : 2600, 5400 FT
   M. TURBULENCE    : MOD TO SEV OFFSHORE AND NEAR HILLS.
   N. SEA STATE     : 2.0-3.0 M     SEA TEMPERATURE    : 16 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE TO FRESH EASTERLY WINDS. 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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