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Bulletin issued at 00:31 HKT 07/Oct/2019

At midnight at the Hong Kong Observatory the air temperature was 23 degrees Celsius and the relative humidity 96 per cent.

Though rainstorm warning has been cancelled, people should stay alert to the danger that may be brought about by river flooding.

Strong winds are expected from the east. The public should beware of the possible danger brought by rough seas.

Please be reminded that:

The Thunderstorm Warning has been issued. It will remain effective until 3:00 a.m. today. Isolated squally thunderstorms are expected to occur over Hong Kong.
The Strong Monsoon Signal has been issued.

The air temperatures at other places were:

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

Between 10:45 and 11:45 p.m., lightning was detected over all regions. The rainfall recorded in various regions were:

Sai Kung 7 to 28 mm;
Wong Tai Sin 15 to 26 mm;
Tai Po 0 to 25 mm;
North District 9 to 25 mm;
Sha Tin 13 to 23 mm;
Kowloon City 9 to 18 mm;
Kwai Tsing 10 to 17 mm;
Tsuen Wan 9 to 16 mm;
Yuen Long 6 to 16 mm;
Sham Shui Po 0 to 16 mm;
Yau Tsim Mong 12 to 15 mm;
Kwun Tong 10 to 14 mm;
Islands District 2 to 14 mm;
Eastern District 7 to 13 mm;
Central & Western District 6 to 10 mm;
Tuen Mun 6 to 10 mm;
Wan Chai 7 to 8 mm;
Southern District 4 to 8 mm.


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


Climatological Information for 7 Oct

Regional Weather in Hong Kong

Information on Tropical Cyclones

Hong Kong Climatology


Local Weather Forecast
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Automatic Regional Weather Forecast in Hong Kong & Pearl River Delta Region

Current Weather | Regional Temperature Forecast in HK |  9-day Weather Forecast
UV Index Forecast |  Weather Information for South China Coastal Waters

Bulletin updated at 00:00 HKT 07/Oct/2019

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

A strong easterly airstream affected the coast of Guangdong yesterday and an upper-air disturbance brought thundery showers to the region. Locally, it was mainly cloudy with showers and squally thunderstorms. Showers were heavy at times in the afternoon and at night. The easterly airstream and the upper-air disturbance will continue to affect the coast of Guangdong today.

Weather forecast for Hong Kong (Monday, 7 Oct 2019)

Mainly cloudy with showers. Showers will be heavy with squally thunderstorms at first. Showers will ease off gradually later. Temperatures will range between 23 and 28 degrees. Moderate to fresh easterly winds, strong offshore and on high ground at first.

Outlook : Sunny periods in the following couple of days.


(The above forecast period is valid up to 23:59 HKT today, 07/10/2019; 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 06/Oct/2019

N0 WARNING.

GENERAL SITUATION AT 060900 UTC:
AN EASTERLY AIRSTREAM IS AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 061300 UTC:

HONG KONG= E 5-6, OCNL 7. DOWN TO 1000 M IN OCNL SQUALLY SHOWERS AND TS. SEA UP TO 4 M. SWELL E UP TO 2 M. TEMP 24-29 C. =
KWANGTUNG= E TO NE 5-6, OCNL 7. DOWN TO 1000 M IN OCNL SQUALLY SHOWERS AND TS. SEA UP TO 4 M. SWELL E 2 M. =
TAIWAN STRAIT= NE 6-7. ISOL SHOWERS AND TS. SEA 3-4 M. SWELL NE 2 M. =
BASHI= E TO NE 6-7. ISOL SHOWERS AND TS. SEA 3-4 M. SWELL E 2 M. =
PRATAS= E TO NE 6-7. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 3-4 M. SWELL E 2 M. =
BALINTANG= E TO NE 6-7. ISOL SHOWERS AND TS. SEA 3-4 M. SWELL E 2 M. =
SCARBOROUGH= E TO NE 5-6. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 2-3 M. =
PARACEL= E TO NE 5-6. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 2-3 M. SWELL E 2 M. =
TONKIN= N TO NE 4-5, OCNL 6. DOWN TO 1000 M IN OCNL SQUALLY SHOWERS AND TS. SEA UP TO 3 M. =
DANANG= N TO NE 4-5, OCNL 6. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA UP TO 3 M. SWELL E 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

    Current Weather | Local Weather Forecast | Regional Temperature Forecast in HK
    9-day Weather Forecast | UV Index Forecast | Weather Information for Fishermen

    Bulletin issued at 23:30 HKT 06/Oct/2019

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 11:30 p.m. on 06 October 2019

    Warnings:
    Strong winds in all areas.

    Weather Situation:
    An easterly airstream is affecting the south China coastal waters.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    East force 5 to 6, occasionally force 7.
    Squally showers and thunderstorms. Showers will be heavy at times at first.
    Moderate to rough seas.

    Nan'ao:
    East to northeast force 5 to 6, occasionally force 7.
    Isolated squally showers and thunderstorms.
    Moderate to rough seas.

    Shanwei, South of Hong Kong and Shangchuan Dao:
    East force 5 to 6, occasionally force 7.
    Scattered squally showers and thunderstorms.
    Moderate to rough seas.

    Outlook for the next 48 hours
    East to northeasterly winds of force 5 to 6. Isolated squally showers and thunderstorms at first.

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

    Waglan Island Wind east force 5
      Visibility 6 Kilometres

    Shantou Wind east force 2
      Visibility 19 Kilometres

    Huangmaozhou Wind east-northeast force 4

    Macau Wind northeast force 2
      Visibility 45 Kilometres

    Xisha Wind northeast force 1
      Visibility 30 Kilometres

  • Explanation of Seas or Sea Waves
  • Explanation of Swells
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    • WEATHER FORECAST FOR LOCAL AVIATION
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    Weather Forecast for Local Aviation

    Bulletin issued at 17:30 HKT 06/OCT/2019
    (Next update at 01:30 HKT 07/OCT/2019)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     STRONG WINDS AND SEV TURB. 
     ISOL CUNIM/TS AND ASSOCIATED HAZARDS.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     A STRONG EASTERLY AIRSTREAM IS AFFECTING THE
     COAST OF GUANGDONG. MEANWHILE, AN UPPER-AIR
     DISTURBANCE IS BRINGING THUNDERY SHOWERS TO THE
     REGION.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1800 TO 0400 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  080/15-20
                  TEMPO VRB/25G35 IN TS
       OFFSHORE:  080/20-25, OCNL 30                   26-24
   B.   2000 FT:  090/25-30, OCNL 35                   23
   C.   5000 FT:  100/25-30, OCNL 35                   18
   D.  10000 FT:  100/20-25                            8
   E.  18000 FT:  110/25                               MS5
   F.  24000 FT:  120/25                               MS15
   G.  30000 FT:  130/25                               MS29
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      MAINLY CLOUDY WITH SHOWERS. A FEW SQUALLY
      THUNDERSTORMS.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 2000 FT SCT 3000 FT. 
      TEMPO FEW CB 1000 FT SCT 2000 FT BKN 4000 FT.
   K. VISIBILITY    : 9 KM. TEMPO 4000 M IN SHOWERS. 
                      TEMPO 2000 M IN TS.
   L. 0 DEG. C LEVEL: 14500 FT      10 DEG. C LEVEL(S) : 9000 FT
   M. TURBULENCE    : MOD TO SEV NEAR CUNIM/TS AND AT LOW LEVELS.
   N. SEA STATE     : 3.0-4.0 M     SEA TEMPERATURE    : 27 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE TO FRESH EASTERLY WINDS, STRONG
     OFFSHORE AND ON HIGH GROUND. MAINLY CLOUDY WITH
     SHOWERS. A FEW SQUALLY 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.

    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 22:31 HKT on 06 Oct 19

    VHHK SIGMET 4 VALID 061430/061830 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N1751 E11258 - N1930 E11130 - N2130 E11130 - N2318 E11550 - N2046 E11649 - N1751 E11258 TOP FL480 MOV WNW 15KT 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 07/Oct/2019 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     29.1 C
Minimum Air Temperature                     23.1 C
Grass Minimum Temperature                   22.8 C
Relative Humidity                        66 - 96 Percent
Rainfall                                    46.8 mm 
Total rainfall since 1st January          2280.0 mm
Against an average of                     2268.3 mm

Other Stations                Min                  Max
King's Park                  22.5 C               28.6 C
Wong Chuk Hang               23.2 C               28.7 C
Ta Kwu Ling                  22.7 C               31.1 C
Lau Fau Shan                 22.5 C               29.7 C
Tai Po                       22.3 C               28.8 C
Sha Tin                      23.1 C               30.0 C
Tuen Mun                     23.2 C               29.7 C
Tseung Kwan O                22.6 C               28.9 C
Sai Kung                     22.9 C               29.5 C
Cheung Chau                  22.4 C               26.6 C
Chek Lap Kok                 23.7 C               30.7 C
Tsing Yi                     23.2 C               29.8 C
Shek Kong                    22.7 C               29.6 C
Tsuen Wan Ho Koon            21.8 C               27.8 C
Tsuen Wan Shing Mun Valley   22.6 C               29.1 C
Hong Kong Park               22.5 C               28.0 C
Shau Kei Wan                 22.1 C               28.3 C
Kowloon City                 22.2 C               29.0 C
Happy Valley                 23.4 C               29.2 C
Wong Tai Sin                 22.7 C               29.2 C
Kwun Tong                    22.5 C               28.4 C
Sham Shui Po                 22.9 C               30.4 C
Kai Tak Runway Park          23.0 C               28.9 C
Yuen Long Park               23.1 C               30.6 C
Tai Mei Tuk               22.2 C               30.9 C

Duration of sunshine (King's Park):              0.2 H
The mean UV index recorded at King's Park yesterday was 1,
the UV intensity was Low.
The maximum UV index for yesterday was 4.
 

Yesterday's (06 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                           0.12
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 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 06 Oct
     2003copy right image | Important notices | Privacy policy Last revision date: <07 Oct 2019> 

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