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

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

Bulletin issued at 22:02 HKT 08/Aug/2017

At 10 p.m. at the Hong Kong Observatory the air temperature was 30 degrees Celsius and the relative humidity 78 per cent.

Please be reminded that:

The Very Hot Weather Warning is now in force. Very hot weather might cause adverse health effects. Members of the public should take care to avoid heatstroke.

The air temperatures at other places were:

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


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


Climatological Information for 8 Aug


Local Weather Forecast
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Local Weather Forecast

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 21:45 HKT 08/Aug/2017

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

A southwesterly airstream is affecting the coast of Guangdong.

Weather forecast for tonight and tomorrow

Mainly cloudy with a few showers. The minimum temperature will be about 28 degrees tomorrow. Sunny periods during the day. The maximum temperature will be around 32 degrees in the urban areas, and a couple of degrees higher in the New Territories. Moderate southwesterly winds, occasionally fresh.

Outlook : Hot with sunny periods and a few showers in the following couple of days.


(The above forecast period is valid up to 23:59 HKT tomorrow, 09/08/2017; Regular update at : around 45 minutes past each hour, 16:15 HKT and 23:15 HKT)



MARINE FORECAST
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Marine Forecast

Weather Information for the Marine Community

Bulletin issued at 21:00 HKT 08/Aug/2017

GALE WARNING AREA: TAIWAN STRAIT.

GENERAL SITUATION AT 080900 UTC:
A SOUTHWESTERLY AIRSTREAM IS AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 081300 UTC:

HONG KONG= SW 4-5, OCNL 6. ISOL SHOWERS AND TS. SEA UP TO 3 M. TEMP 28-32 C. =
KWANGTUNG= SW 4-5, OCNL 6. ISOL SHOWERS AND TS. SEA UP TO 3 M. =
TAIWAN STRAIT= SW 6-7, OCNL 8 IN N. ISOL SHOWERS AND TS. SEA UP TO 6 M. SWELL SW 2 M. =
BASHI= SW 5-6, OCNL 7. ISOL SHOWERS AND TS. SEA UP TO 4 M. SWELL SW 2 M. =
PRATAS= SW 4-5, OCNL 6. ISOL SHOWERS AND TS. SEA UP TO 3 M. =
BALINTANG= SW 5-6. ISOL SHOWERS AND TS. SEA 2-3 M. SWELL SW 2 M. =
SCARBOROUGH= SW 4-5. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 2 M. =
PARACEL= S TO SW 4-5, OCNL 6. ISOL SHOWERS AND TS. SEA UP TO 3 M. =
TONKIN= S TO SW 5-6, OCNL 7. ISOL SHOWERS AND TS. SEA UP TO 4 M. =
DANANG= S TO SW 4-5, OCNL 6. ISOL SHOWERS AND TS. SEA UP TO 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.



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 19:30 HKT 08/Aug/2017

Weather information for south China coastal waters issued by the Hong Kong Observatory at 7:30 p.m. on 08 August 2017

Warnings:
Strong winds in all areas.

Weather Situation:
A southwesterly airstream is affecting the south China coastal waters.

Area forecasts for the next 24 hours

Hong Kong Adjacent Waters:
Southwest force 4 to 5, occasionally force 6.
Isolated showers and thunderstorms.
Moderate to rough seas.

Nan'ao, Shanwei and South of Hong Kong:
Southwest force 4 to 5, occasionally force 6.
Isolated showers and thunderstorms.
Moderate to rough seas.

Shangchuan Dao:
South to southwest force 5 to 6.
Isolated showers and thunderstorms.
Moderate to rough seas.

Outlook for the next 48 hours
Southwesterly winds of force 5 to 6. Isolated showers and thunderstorms.

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

Waglan Island Wind west-southwest force 4
  Visibility 29 Kilometres

Shantou Wind southwest force 3
  Visibility 30 Kilometres

Dongsha Wind west-southwest force 3
  Visibility 10 Kilometres

Huangmaozhou Wind south-southwest force 4

Macau Wind south force 3
  Visibility 26 Kilometres

Xisha Wind south-southwest force 3
  Visibility 21 Kilometres


WEATHER FORECAST FOR LOCAL AVIATION
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Weather Forecast for Local Aviation

Bulletin issued at 17:30 HKT 08/AUG/2017
(Next update at 01:30 HKT 09/AUG/2017)
I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     ISOL CUNIM/TS AND ASSOCIATED HAZARDS.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     A SOUTHWESTERLY AIRSTREAM IS AFFECTING THE SOUTH
     CHINA COASTAL AREAS.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1800 TO 0400 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  210/10
                  TEMPO VRB/15G25 IN TS
       OFFSHORE:  230/15-20                            32-28
   B.   2000 FT:  240/15-20                            25
   C.   5000 FT:  240/20                               21
   D.  10000 FT:  220/20                               12
   E.  18000 FT:  210/15                               MS2
   F.  24000 FT:  210/15                               MS14
   G.  30000 FT:  090/10                               MS29
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      MAINLY CLOUDY WITH A FEW SHOWERS.  A FEW
      ISOLATED THUNDERSTORMS OVER INLAND AT FIRST.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 2000 FT SCT 4000 FT.  TEMPO FEW CB 1000 FT
      SCT 2000 FT  BKN 4000 FT.
   K. VISIBILITY    : 10 KM.  TEMPO 4000 M IN SHOWERS.  TEMPO 2000 M IN TS.
   L. 0 DEG. C LEVEL: 17500 FT      10 DEG. C LEVEL(S) : 12000 FT
   M. TURBULENCE    : MOD TO SEV NEAR CUNIM/TS.  MOD OFFSHORE AND NEAR HILLS.
   N. SEA STATE     : 2.0-2.5 M     SEA TEMPERATURE    : 27 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE TO FRESH SOUTHWESTERLY WINDS.  SUNNY
     PERIODS AND A FEW SHOWERS.=
===================================================================
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 12:20 HKT on 04 Aug 17

VHHK SIGMET 1 VALID 040020/040420 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N1930 E11130 - N2124 E11130 - N2230 E11342 - N2300 E11512 - N2012 E11406 - N1930 E11130 TOP FL420 MOV N 10KT NC= VHHK SIGMET 2 VALID 040420/040820 VHHH- VHHK HONG KONG FIR EMBD TS FCSTWI N2006 E11130 - N2124 E11130 - N2230 E11342 - N2254 E11454 - N2130 E11454 - N2006 E11130 TOP FL420 MOV N 10KT NC= VHHK SIGMET 3 VALID 040420/040820 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N2006 E11130 - N2124 E11130 - N2230 E11342 - N2254 E11454 - N2130 E11454 - N2006 E11130 TOP FL420 MOV N 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.

The latest report on Tropical Cyclone Roke broadcast by Miss LEE SHUK MING , Senior Scientific Officer of the Hong Kong Observatory at 6:23 p.m. on 23 Jul 2017.
Listen Listen

For other tropical cyclone related information, please visit the World Meteorological Organization Web Site - Severe Weather Information Centre.


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Last revision date: <08 Aug 2017> 

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 08/Aug/2017
HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     33.0 C
Minimum Air Temperature                     27.3 C
Grass Minimum Temperature                   27.2 C
Relative Humidity                        63 - 88 Percent
Rainfall                                     6.9 mm 
Total rainfall since 1st January          1874.3 mm
Against an average of                     1570.5 mm

Other Stations                Min                  Max
King's Park                  27.7 C               33.1 C
Wong Chuk Hang               26.4 C               32.2 C
Ta Kwu Ling                  25.8 C               34.9 C
Lau Fau Shan                 28.3 C               34.3 C
Tai Po                       27.8 C               34.0 C
Sha Tin                      28.6 C               34.2 C
Tuen Mun                     28.6 C               33.5 C
Tseung Kwan O                27.1 C               34.5 C
Sai Kung                     28.1 C               35.3 C
Cheung Chau                  25.5 C               32.5 C
Chek Lap Kok                 29.9 C               35.4 C
Tsing Yi                     27.8 C               32.9 C
Shek Kong                    27.2 C               34.8 C
Tsuen Wan Ho Koon            26.7 C               32.2 C
Tsuen Wan Shing Mun Valley   27.7 C               33.5 C
Hong Kong Park               25.9 C               32.7 C
Shau Kei Wan                 26.3 C               33.4 C
Kowloon City                 28.2 C               33.4 C
Happy Valley                 26.4 C               34.4 C
Wong Tai Sin                 28.6 C               33.7 C
Stanley                      27.8 C               32.2 C
Kwun Tong                    27.0 C               33.3 C
Sham Shui Po                 27.9 C               33.1 C
Kai Tak Runway Park          26.8 C               33.6 C
Yuen Long Park               27.8 C               34.7 C
Tai Mei Tuk               27.8 C               34.0 C

Duration of sunshine (King's Park):              10.3 H
The mean UV index recorded at King's Park yesterday was 6,
the UV intensity was High.
The maximum UV index for yesterday was 12.
 

Yesterday's (07 Aug 2017) 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                             0.08
Kat O                               0.08
Yuen Ng Fan                         0.11
Tai Mei Tuk                         0.12
Sha Tau Kok                         0.10
Kwun Tong                           0.11
Sai Wan Ho                          0.08
King's Park                         0.14
Tsim Bei Tsui                       0.12
Cape D'Aguilar                      0.13
Chek Lap Kok                        0.14

Note
  1. From readings taken at various locations in Hong Kong during the period 1987-2016, 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 07 Aug
Last revision date: <08 Aug 2017> 

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