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Bulletin issued at 11:02 HKT 30/Oct/2016

At 11 a.m. at the Hong Kong Observatory the air temperature was 24 degrees Celsius and the relative humidity 73 per cent.
During the past hour the mean UV Index recorded at King's Park was 3. The intensity of UV radiation was moderate.

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 24 degrees;
Wong Chuk Hang 25 degrees;
Ta Kwu Ling 22 degrees;
Lau Fau Shan // degrees;
Tai Po 23 degrees;
Sha Tin 24 degrees;
Tuen Mun 23 degrees;
Tseung Kwan O 24 degrees;
Sai Kung 23 degrees;
Cheung Chau 23 degrees;
Chek Lap Kok 24 degrees;
Tsing Yi 24 degrees;
Shek Kong 23 degrees;
Tsuen Wan Ho Koon 23 degrees;
Tsuen Wan Shing Mun Valley 24 degrees;
Hong Kong Park 24 degrees;
Shau Kei Wan 23 degrees;
Kowloon City 23 degrees;
Happy Valley 25 degrees;
Wong Tai Sin 24 degrees;
Stanley 24 degrees;
Kwun Tong 23 degrees;
Sham Shui Po 24 degrees;
Kai Tak Runway Park 24 degrees;
Yuen Long Park 23 degrees.


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


Climatological Information for 30 Oct

Regional Weather in Hong Kong

Information on Tropical Cyclones

Hong Kong Climatology


Local Weather Forecast
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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 10:45 HKT 30/Oct/2016

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

The northeast monsoon is bringing cooler weather to the coastal areas of Guangdong. Locally, temperatures over the territory this morning were generally four or five degrees lower than those of yesterday.

Weather forecast for today

Dry with sunny intervals during the day. Cloudy tonight. Moderate to fresh northeasterly winds, occasionally strong offshore later.

Outlook : Sunny intervals in the next couple of days. Morning temperatures falling to around 20 degrees midweek this week.


(The above forecast period is valid up to 23:59 HKT today, 30/10/2016; Regular update at : around 45 minutes past each hour, 16:15 HKT and 23:15 HKT)

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MARINE FORECAST
Traditional Chinese Simplified Chinese

Marine Forecast

Weather Information for the Marine Community

Bulletin issued at 09:00 HKT 30/Oct/2016

GALE WARNING AREAS: KWANGTUNG, TAIWAN STRAIT, BASHI, PRATAS, BALINTANG, SCARBOROUGH, PARACEL AND TONKIN.

GENERAL SITUATION AT 292100 UTC:
AN INTENSE NORTHEAST MONSOON IS AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 300100 UTC:

HONG KONG= NE 6-7. FINE. SEA 3-4 M. SWELL NE 2-3 M. TEMP 26-22 C. =
KWANGTUNG= NE 7-8. FINE. SEA 4-6 M. SWELL NE 3 M. =
TAIWAN STRAIT= NE 7-8, OCNL 9 AT FIRST. FINE. SEA 4-6 M, UP TO 8 M AT FIRST. SWELL NE 3 M. =
BASHI= E TO NE 7-8. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 4-6 M. SWELL E TO NE 3 M. =
PRATAS= NE 7-8. RAIN PATCHES. SEA 4-6 M. SWELL E TO NE 3 M. =
BALINTANG= E TO NE 7-8. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 4-6 M. SWELL E TO NE 3 M. =
SCARBOROUGH= NE 6-7, 8 IN N. ISOL SHOWERS AND TS. SEA UP TO 6 M. SWELL NE 3 M. =
PARACEL= NE 6-7, UP TO 8 IN N. ISOL SHOWERS AND TS. SEA UP TO 6 M. SWELL NE 3 M. =
TONKIN= NE 6-7, UP TO 8 AT FIRST. ISOL SHOWERS AND TS. SEA 3-4 M, UP TO 6 M AT FIRST. SWELL NE 2 M. =
DANANG= NE 6-7. ISOL SHOWERS AND TS. SEA 3-4 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 30/Oct/2016

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 9:30 a.m. on 30 October 2016

    Warnings:
    Gale force winds in Nan'ao, Shanwei, south of Hong Kong and Shangchuan Dao. Strong winds in Hong Kong adjacent waters.

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

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    Northeast force 6 to 7.
    Rough seas.

    Nan'ao, Shanwei and South of Hong Kong:
    Northeast force 7 to 8.
    Rough to very rough seas.

    Shangchuan Dao:
    Northeast force 6 to 7, occasionally force 8.
    Isolated showers and thunderstorms.
    Rough to very rough seas.

    Outlook for the next 48 hours
    North to northeasterly winds of force 6 to 7, occasionally force 8 .

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

    Waglan Island Wind north-northeast force 4
      Visibility 9 Kilometres

    Shantou Wind east-northeast force 1
      Visibility 30 Kilometres

    Dongsha Wind north-northeast force 5
      Visibility 10 Kilometres

    Huangmaozhou Wind northeast force 5

    Macau Wind north force 4
      Visibility 12 Kilometres

    Xisha Wind east-northeast force 3
      Visibility 15 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
  • Tidal Information

    • WEATHER FORECAST FOR LOCAL AVIATION
    Traditional Chinese Simplified Chinese

    Weather Forecast for Local Aviation

    Bulletin issued at 09:30 HKT 30/OCT/2016
    (Next update at 17:30 HKT 30/OCT/2016)
    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 1000 TO 2000 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  030/15
       OFFSHORE:  040/20-25                            26-23
   B.   2000 FT:  050/20-25, OCNL 30                   18
   C.   5000 FT:  100/20                               17
   D.  10000 FT:  110/15                               9
   E.  18000 FT:  160/15                               MS6
   F.  24000 FT:  230/10                               MS16
   G.  30000 FT:  280/10                               MS31
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      MAINLY CLOUDY WITH ONE OR TWO RAIN PATCHES.
      SUNNY INTERVALS DURING THE DAY.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 2000 FT SCT 3500 FT
   K. VISIBILITY    : 10 KM. TEMPO 4000 M IN RAIN.
   L. 0 DEG. C LEVEL: 16000 FT      10 DEG. C LEVEL(S) : 9000 FT
   M. TURBULENCE    : MOD TO SEV
   N. SEA STATE     : 2.0-3.5 M     SEA TEMPERATURE    : 27 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE TO FRESH NORTHEASTERLY WINDS. SUNNY
     INTERVALS.=

    ===================================================================
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 09:27 HKT on 30 Oct 16

    VHHK SIGMET 1 VALID 300130/300530 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N1748 E11454 - N1642 E11400 - N1830 E11224 - N1830 E11400 - N1748 E11454 TOP FL400 MOV SW 05KT 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 30/Oct/2016 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     29.0 C
Minimum Air Temperature                     24.3 C
Grass Minimum Temperature                   24.5 C
Relative Humidity                        74 - 85 Percent
Rainfall                                     0.5 mm 
Total rainfall since 1st January          2888.9 mm
Against an average of                     2331.0 mm

Other Stations                Min                  Max
King's Park                  23.4 C               29.3 C
Wong Chuk Hang               23.2 C               28.3 C
Ta Kwu Ling                  22.2 C               29.8 C
Lau Fau Shan                 23.1 C               30.0 C
Tai Po                       23.9 C               28.4 C
Sha Tin                      23.2 C               29.7 C
Tuen Mun                     24.1 C               30.2 C
Tseung Kwan O                22.2 C               29.4 C
Sai Kung                     23.1 C               27.9 C
Cheung Chau                  23.9 C               28.6 C
Chek Lap Kok                 24.8 C               31.6 C
Tsing Yi                     24.0 C               29.4 C
Shek Kong                    23.2 C               29.9 C
Tsuen Wan Ho Koon            23.0 C               28.3 C
Tsuen Wan Shing Mun Valley   23.1 C               30.6 C
Hong Kong Park               24.2 C               28.8 C
Shau Kei Wan                 22.9 C               27.9 C
Kowloon City                 22.9 C               28.4 C
Happy Valley                 24.3 C               29.7 C
Wong Tai Sin                 23.5 C               28.5 C
Stanley                      23.8 C               27.9 C
Kwun Tong                    23.3 C               28.8 C
Sham Shui Po                 23.6 C               30.9 C
Kai Tak Runway Park          24.3 C               28.7 C
Yuen Long Park               23.4 C               30.4 C

Duration of sunshine (King's Park):              3.7 H
The mean UV index recorded at King's Park yesterday was 2,
the UV intensity was Low.
The maximum UV index for yesterday was 6.
Sea surface temperature (Waglan Island):        27.4 C 

Yesterday's (29 Oct 2016) 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                           0.08
Tap Mun                             0.09
Kat O                               0.09
Yuen Ng Fan                         0.12
Tai Mei Tuk                         0.13
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 during
the period 1987-2015, the background ambient gamma radiation
levels may vary between 0.06 and 0.30 microsievert per hour.

    2. The extent of health effects to a person as a result of
exposure to radiation is expressed by a physical quantity
called equivalent dose, in unit of sievert.  Protective
action may be required if there is an increase in the
ambient gamma dose rate above background such that the total
additional dose is expected to exceed 5000 microsieverts in
a relatively short period of time. For example, a dose of
5000 microsieverts may be reached when the ambient gamma
dose rate is 1000 microsieverts per hour (several thousand
times above background) and lasts for 5 hours.

    3. The readings of ambient gamma radiation level from
instrument are expressed in unit of gray, which is
numerically equal to the gamma dose expressed in sievert.
    Climatological Information for 29 Oct
     2003copy right image | Important notices | Privacy policy Last revision date: <30 Oct 2016> 

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