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Bulletin issued at 16:02 HKT 04/Oct/2018

At 4 p.m. at the Hong Kong Observatory the air temperature was 30 degrees Celsius and the relative humidity 40 per cent.
During the past hour the mean UV Index recorded at King's Park was 2. The intensity of UV radiation was low.

Please be reminded that:

The Fire Danger Warning is Red and the fire risk is extreme.

The air temperatures at other places were:

King's Park 30 degrees;
Wong Chuk Hang 29 degrees;
Ta Kwu Ling 31 degrees;
Lau Fau Shan 30 degrees;
Tai Po 29 degrees;
Sha Tin 30 degrees;
Tuen Mun 31 degrees;
Tseung Kwan O 30 degrees;
Sai Kung 29 degrees;
Cheung Chau 29 degrees;
Chek Lap Kok 30 degrees;
Tsing Yi 31 degrees;
Shek Kong 32 degrees;
Tsuen Wan Ho Koon 29 degrees;
Tsuen Wan Shing Mun Valley 31 degrees;
Hong Kong Park 30 degrees;
Shau Kei Wan 29 degrees;
Kowloon City 30 degrees;
Happy Valley 30 degrees;
Wong Tai Sin 31 degrees;
Stanley 30 degrees;
Kwun Tong 31 degrees;
Sham Shui Po 29 degrees;
Kai Tak Runway Park 30 degrees;
Yuen Long Park 31 degrees;
Tai Mei Tuk 28 degrees.


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


Climatological Information for 4 Oct

Regional Weather in Hong Kong

Information on Tropical Cyclones

Hong Kong Climatology


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Bulletin updated at 16:15 HKT 04/Oct/2018

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

A dry northeast monsoon is bringing generally fine weather to Guangdong. Locally, the relative humidity over most parts of the territory stayed at 40 per cent or below in the afternoon.

At 4 p.m., Typhoon Kong-rey was centred about 180 kilometres south-southwest of Okinawa. It is forecast to move north-northwest at about 22 kilometres per hour across the vicinity of the Ryukyu Islands.

Weather forecast for tonight and tomorrow

Fine and very dry. The minimum temperature tomorrow will be about 23 degrees in the urban areas, and a few degrees lower in the New Territories. The maximum temperature will be around 30 degrees. Moderate northerly winds, occasionally fresh tomorrow.

Outlook : Fine and very dry on Saturday. The temperature difference will be rather large between day and night. Cloudier in the following couple of days.


(The above forecast period is valid up to 23:59 HKT tomorrow, 05/10/2018; 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 09:00 HKT 04/Oct/2018

GALE WARNING AREAS: TAIWAN STRAIT, BASHI AND BALINTANG.

GENERAL SITUATION AT 032100 UTC:
THE NORTHEAST MONSOON IS AFFECTING THE FORECAST AREAS. TYPHOON KONG-REY (1825) 955 HPA 23N 128E NW 10KT WKN.

MARINE FORECAST FOR 24 HOURS FROM 040100 UTC:

HONG KONG= N TO NE 4-5. FINE. SEA UP TO 2 M. SWELL E UP TO 2 M. TEMP 31-23 C. =
KWANGTUNG= N TO NE 5-6, UP TO 7 IN E. ISOL SHOWERS. SEA 2-3 M, UP TO 4 M IN E. SWELL E TO NE 2-3 M. =
TAIWAN STRAIT= N TO NE 7-8. ISOL SHOWERS AND TS. SEA 4-6 M. SWELL NE 3 M. =
BASHI= N TO NW 7-8. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 4-6 M. SWELL E TO NE 3-5 M. =
PRATAS= NE 6-7. ISOL SHOWERS. SEA 3-4 M. SWELL E TO NE 3 M. =
BALINTANG= N TO NW 7-8. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 4-6 M. SWELL NE 3-5 M. =
SCARBOROUGH= N TO NE 5-6, OCNL 7. ISOL SHOWERS. SEA UP TO 4 M. SWELL E TO NE 3 M. =
PARACEL= N TO NE 5-6. ISOL SHOWERS AND TS. SEA 2-3 M. SWELL E TO NE 2-3 M. =
TONKIN= NE 5-6. ISOL SHOWERS. SEA 2-3 M. =
DANANG= NE 5-6. ISOL SHOWERS AND TS. SEA 2-3 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.


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

    Bulletin issued at 16:30 HKT 04/Oct/2018

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 4:30 p.m. on 04 October 2018

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

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

    At 4 p.m., Typhoon Kong-rey with maximum sustained winds of about 130 kilometres per hour near its centre was located near 24.7 degrees north, 127.0 degrees east. It is forecast to move north-northwest at about 22 kilometres per hour across the vicinity of the Ryukyu Islands.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    North force 4 to 5, occasionally force 6.
    Moderate to rough seas.

    Nan'ao:
    North force 6 to 7, occasionally force 8.
    Rough to very rough seas.

    Shanwei:
    North force 6 to 7.
    Rough seas.

    South of Hong Kong:
    North force 5 to 6, up to force 7 overnight.
    Moderate to rough seas.

    Shangchuan Dao:
    North force 5 to 6.
    Moderate to rough seas.

    Outlook for the next 48 hours
    North to northeasterly winds of force 5 to 6, becoming easterly winds of force 6 later.

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

    Waglan Island Wind southeast force 2
      Visibility 18 Kilometres

    Dongsha Wind north-northeast force 3
      Visibility 10 Kilometres

    Huangmaozhou Wind northwest force 2

    Macau Wind north-northeast force 4
      Visibility 19 Kilometres

    Xisha Wind east-northeast force 3
      Visibility 24 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 12:30 HKT 04/OCT/2018
    (Next update at 17:30 HKT 04/OCT/2018)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     NIL.
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:  360/10
       OFFSHORE:  360/10-15, OCNL 20 LATER             31-26
   B.   2000 FT:  010/15-20                            20
   C.   5000 FT:  360/20                               14
   D.  10000 FT:  360/20                               10
   E.  18000 FT:  310/20                               MS4
   F.  24000 FT:  300/15                               MS14
   G.  30000 FT:  320/10                               MS26
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      FINE.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 4000 FT.
   K. VISIBILITY    : 10 KM.
   L. 0 DEG. C LEVEL: 16500 FT      10 DEG. C LEVEL(S) : 10000 FT
   M. TURBULENCE    : MOD OFFSHORE AND NEAR HILLS
   N. SEA STATE     : 1.0-2.0 M     SEA TEMPERATURE    : 27 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE NORTHERLY WINDS, OCCASIONALLY FRESH.
     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 10:00 HKT on 02 Oct 18

    VHHK SIGMET 1 VALID 020200/020600 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N1800 E11506 - N1642 E11400 - N1754 E11254 - N1800 E11506 TOP FL400 MOV W 5KT 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 04/Oct/2018 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     30.5 C
Minimum Air Temperature                     25.0 C
Grass Minimum Temperature                   23.4 C
Relative Humidity                        47 - 77 Percent
Rainfall                                       0 mm 
Total rainfall since 1st January          1976.2 mm
Against an average of                     2246.3 mm

Other Stations                Min                  Max
King's Park                  23.9 C               29.8 C
Wong Chuk Hang               22.3 C               29.8 C
Ta Kwu Ling                  20.9 C               31.1 C
Lau Fau Shan                 22.3 C               31.3 C
Tai Po                       23.3 C               29.3 C
Sha Tin                      22.9 C               30.3 C
Tuen Mun                     23.1 C               31.2 C
Tseung Kwan O                21.7 C               30.2 C
Sai Kung                     23.9 C               29.3 C
Cheung Chau                  22.6 C               31.5 C
Chek Lap Kok                 24.9 C               30.9 C
Tsing Yi                     24.8 C               30.3 C
Shek Kong                    21.5 C               31.6 C
Tsuen Wan Ho Koon            21.5 C               29.7 C
Tsuen Wan Shing Mun Valley   22.1 C               30.7 C
Hong Kong Park               23.9 C               30.3 C
Shau Kei Wan                 23.8 C               29.5 C
Kowloon City                 23.6 C               30.7 C
Happy Valley                 23.7 C               31.3 C
Wong Tai Sin                 23.9 C               30.9 C
Stanley                      24.1 C               29.6 C
Kwun Tong                    23.5 C               29.8 C
Sham Shui Po                 23.8 C               31.4 C
Kai Tak Runway Park          24.6 C               28.7 C
Yuen Long Park               21.4 C               31.9 C
Tai Mei Tuk               23.3 C               31.1 C

Duration of sunshine (King's Park):              10.4 H
The mean UV index recorded at King's Park yesterday was 3,
the UV intensity was Moderate.
The maximum UV index for yesterday was 7.
 

Yesterday's (03 Oct 2018) 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                               0.10
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                        0.14

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 03 Oct
     2003copy right image | Important notices | Privacy policy Last revision date: <04 Oct 2018> 

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