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Bulletin issued at 05:31 HKT 13/Oct/2019

At 5 a.m. at the Hong Kong Observatory the air temperature was 26 degrees Celsius and the relative humidity 83 per cent.

Widespread heavy rain may affect Hong Kong in a couple of hours. Members of the public should be on the alert.


Please be reminded that:

The Thunderstorm Warning has been issued. It will remain effective until 7:30 a.m. today. A few thunderstorms are expected to occur over Hong Kong.

The air temperatures at other places were:

King's Park 24 degrees;
Wong Chuk Hang 27 degrees;
Ta Kwu Ling 24 degrees;
Lau Fau Shan 23 degrees;
Tai Po 23 degrees;
Sha Tin 24 degrees;
Tuen Mun 24 degrees;
Tseung Kwan O 24 degrees;
Sai Kung 24 degrees;
Cheung Chau 26 degrees;
Chek Lap Kok 25 degrees;
Tsing Yi 24 degrees;
Shek Kong 24 degrees;
Tsuen Wan Ho Koon 23 degrees;
Tsuen Wan Shing Mun Valley 23 degrees;
Hong Kong Park 26 degrees;
Shau Kei Wan 23 degrees;
Kowloon City 24 degrees;
Happy Valley 26 degrees;
Wong Tai Sin 24 degrees;
Stanley 25 degrees;
Kwun Tong 24 degrees;
Sham Shui Po 24 degrees;
Kai Tak Runway Park 25 degrees;
Yuen Long Park 24 degrees;
Tai Mei Tuk 23 degrees.

Between 3:45 and 4:45 a.m., lightning was detected over all regions. The rainfall recorded in various regions were:

Tsuen Wan 0 to 61 mm;
Sai Kung 1 to 38 mm;
Tai Po 1 to 32 mm;
Sham Shui Po 6 to 32 mm;
Kwai Tsing 1 to 23 mm;
North District 1 to 21 mm;
Yuen Long 0 to 18 mm;
Kwun Tong 0 to 10 mm;
Sha Tin 0 to 7 mm;
Tuen Mun 0 to 7 mm;
Wong Tai Sin 1 to 5 mm;
Islands District 0 to 3 mm.


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


Climatological Information for 13 Oct

Regional Weather in Hong Kong

Information on Tropical Cyclones

Hong Kong Climatology


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Bulletin updated at 04:55 HKT 13/Oct/2019

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

A cold front is moving across the coastal areas of Guangdong and bringing thundery showers to the region.

Weather forecast for today

Mainly cloudy with showers and a few squally thunderstorms. Showers will be heavy at times at first. Slightly cooler in the morning and at night. The maximum temperature will be about 29 degrees. Moderate northeasterly winds, occasionally fresh offshore.

Outlook : There will still be showers tomorrow. Winds will strengthen from the east and it will be slightly cooler. Fine and dry midweek this week.


(The above forecast period is valid up to 23:59 HKT today, 13/10/2019; 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 21:00 HKT 12/Oct/2019

N0 WARNING.

GENERAL SITUATION AT 120900 UTC:
A NORTHEASTERLY AIRSTREAM IS AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 121300 UTC:

HONG KONG= E TO NE 3-4, OCNL 5. ISOL SHOWERS AND TS. SEA UP TO 2 M. TEMP 24-28 C. =
KWANGTUNG= E TO NE 4-5, 6 LATER. ISOL SHOWERS AND TS. SEA UP TO 2 M, 3 M LATER. SWELL NE 2 M. =
TAIWAN STRAIT= NE 5-6. ISOL SHOWERS. SEA 2-3 M. SWELL NE 2 M. =
BASHI= E TO NE 4-5, OCNL 6. FINE. SEA UP TO 3 M. SWELL E TO NE 2-3 M. =
PRATAS= E TO NE 4-5, OCNL 6. ISOL SHOWERS. SEA UP TO 3 M. SWELL E TO NE 2 M. =
BALINTANG= E TO NE 4-5, OCNL 6. FINE. SEA UP TO 3 M. SWELL E TO NE 2-3 M. =
SCARBOROUGH= NE 4-5, OCNL 6. FINE. SEA UP TO 3 M. SWELL NE 2 M. =
PARACEL= E TO NE 4-5. ISOL SHOWERS. SEA UP TO 2 M. =
TONKIN= E TO NE 4. ISOL SHOWERS. =
DANANG= E TO NE 4, OCNL 5. ISOL SHOWERS. SEA UP TO 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

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    9-day Weather Forecast | UV Index Forecast | Weather Information for Fishermen

    Bulletin issued at 05:30 HKT 13/Oct/2019

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 5:30 a.m. on 13 October 2019

    Warnings:
    Strong winds in Nan'ao and Shanwei.

    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 4 to 5.
    Occasional heavy showers and squally thunderstorms.
    Moderate seas.

    Nan'ao and Shanwei:
    East to northeast force 4 to 5, force 6 later.
    Isolated showers and thunderstorms.
    Moderate to rough seas.

    South of Hong Kong and Shangchuan Dao:
    East to northeast force 4 to 5.
    Isolated showers and squally thunderstorms.
    Moderate seas.

    Outlook for the next 48 hours
    East to northeasterly winds of force 6 to 7, becoming force 8 in east. Isolated showers and thunderstorms.

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

    Waglan Island Wind north-northeast force 5
      Visibility 6 Kilometres

    Shantou Wind east force 1
      Visibility 19 Kilometres

    Dongsha Wind northeast force 2
      Visibility 10 Kilometres

    Huangmaozhou Wind variable force 1

    Macau Wind south-southwest force 1
      Visibility 10 Kilometres

    Xisha Wind east-northeast force 2
      Visibility 17 Kilometres

  • Explanation of Seas or Sea Waves
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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 01:30 HKT 13/OCT/2019
    (Next update at 9:00-9:30 HKT 13/OCT/2019)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     ISOL CUNIM/TS AND ASSOCIATED HAZARDS.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     A COLD FRONT OVER THE NORTHERN PART OF GUANGDONG
     IS MOVING SOUTHWARDS GRADUALLY.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 0200 TO 1200 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  120/5-10
                  BECMG 030/10-15
                  TEMPO VRB/15G25 IN TS
       OFFSHORE:  140/5-10
                  BECMG 030/10-15                      24-29
   B.   2000 FT:  050/10                               24
   C.   5000 FT:  070/10                               18
   D.  10000 FT:  070/15                               10
   E.  18000 FT:  030/10                               MS4
   F.  24000 FT:  010/15                               MS15
   G.  30000 FT:  360/20                               MS27
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      MAINLY CLOUDY. ISOLATED SHOWERS AND
      THUNDERSTORMS.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 2500 FT SCT 3500 FT.
      TEMPO FEW 1000 FT SCT CB 2000 FT BKN 4000 FT
   K. VISIBILITY    : 7 KM. TEMPO 4000 M IN SHOWERS. TEMPO 2000 M IN TS.
   L. 0 DEG. C LEVEL: 16000 FT      10 DEG. C LEVEL(S) : 10000 FT
   M. TURBULENCE    : MOD TO SEV NEAR CUNIM/TS
   N. SEA STATE     : 0.5-1.5 M     SEA TEMPERATURE    : 29 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE NORTHEASTERLY WINDS. OCCASIONALLY FRESH
     OFFSHORE.
     MAINLY CLOUDY WITH SHOWERS AND ISOLATED
     THUNDERSTORMS.=

    ===================================================================
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 13/Oct/2019 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     31.5 C
Minimum Air Temperature                     27.4 C
Grass Minimum Temperature                   26.0 C
Relative Humidity                        68 - 84 Percent
Rainfall                                     0.3 mm 
Total rainfall since 1st January          2303.1 mm
Against an average of                     2282.3 mm

Other Stations                Min                  Max
King's Park                  26.2 C               30.6 C
Wong Chuk Hang               25.1 C               30.8 C
Ta Kwu Ling                  23.2 C               33.0 C
Lau Fau Shan                 25.6 C               31.9 C
Tai Po                       25.1 C               31.0 C
Sha Tin                      25.3 C               32.6 C
Tuen Mun                     25.9 C               32.4 C
Tseung Kwan O                24.6 C               32.0 C
Sai Kung                     25.9 C               32.3 C
Cheung Chau                  25.0 C               33.6 C
Chek Lap Kok                 26.4 C               32.8 C
Tsing Yi                     25.3 C               31.3 C
Shek Kong                    24.2 C               32.4 C
Tsuen Wan Ho Koon            24.0 C               30.6 C
Tsuen Wan Shing Mun Valley   24.1 C               32.3 C
Hong Kong Park               25.7 C               31.2 C
Shau Kei Wan                 26.5 C               31.7 C
Kowloon City                 24.5 C               33.4 C
Happy Valley                 25.8 C               32.6 C
Wong Tai Sin                 26.0 C               33.0 C
Stanley                      25.8 C               31.9 C
Kwun Tong                    26.5 C               32.0 C
Sham Shui Po                 25.9 C               33.3 C
Kai Tak Runway Park          27.0 C               31.4 C
Yuen Long Park               24.7 C               32.6 C
Tai Mei Tuk               25.7 C               34.1 C

Duration of sunshine (King's Park):              4.8 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 4.
 

Yesterday's (12 Oct 2019) average ambient gamma radiation
dose rate taken outdoors in Hong Kong ranged from 0.09 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                             0.09
Kat O                               0.11
Yuen Ng Fan                         0.12
Tai Mei Tuk                         0.11
Sha Tau Kok                         0.10
Kwun Tong                           0.13
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 12 Oct
     2003copy right image | Important notices | Privacy policy Last revision date: <13 Oct 2019> 

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