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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 18:02 HKT 03/Sep/2016

At 6 p.m. at the Hong Kong Observatory the air temperature was 29 degrees Celsius and the relative humidity 84 per cent.
During the past hour the mean UV Index recorded at King's Park was 0.3. The intensity of UV radiation was low.

The air temperatures at other places were:

King's Park 29 degrees;
Wong Chuk Hang 29 degrees;
Ta Kwu Ling 28 degrees;
Lau Fau Shan 28 degrees;
Tai Po 29 degrees;
Sha Tin 29 degrees;
Tuen Mun 27 degrees;
Tseung Kwan O 28 degrees;
Sai Kung 29 degrees;
Cheung Chau 27 degrees;
Chek Lap Kok 27 degrees;
Tsing Yi 28 degrees;
Shek Kong 29 degrees;
Tsuen Wan Ho Koon 28 degrees;
Tsuen Wan Shing Mun Valley 29 degrees;
Hong Kong Park 29 degrees;
Shau Kei Wan 29 degrees;
Kowloon City 29 degrees;
Happy Valley 29 degrees;
Wong Tai Sin 29 degrees;
Stanley 29 degrees;
Kwun Tong 29 degrees;
Sham Shui Po 29 degrees;
Kai Tak Runway Park 29 degrees;
Yuen Long Park 29 degrees.

Between 4:45 and 5:45 p.m., the rainfall recorded in various regions were:

Tai Po 0 to 26 mm;
Islands District 0 to 18 mm;
Kwai Tsing 0 to 5 mm;
Tuen Mun 0 to 4 mm;
Yuen Long 0 to 4 mm;
Tsuen Wan 0 to 3 mm;
North District 0 to 2 mm;
Sha Tin 0 to 2 mm.


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


Climatological Information for 3 Sep


Local Weather Forecast
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Local Weather Forecast RSS

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 17:45 HKT 03/Sep/2016

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

A trough of low pressure is bringing showers and thunderstorms to the south China coastal areas.

At 4 p.m., Typhoon Namtheun was centred about 160 kilometres south-southwest of Kagoshima. It is forecast to move north-northwest at about 12 kilometres per hour in the general direction of Kyushu of Japan.

Weather forecast for tonight and tomorrow

Mainly cloudy with occasional showers and a few thunderstorms. Temperatures will range between 27 and 30 degrees. Light winds, becoming moderate easterlies tomorrow.

Outlook : Weather remaining unsettled in the following couple of days.


(The above forecast period is valid up to 23:59 HKT tomorrow, 04/09/2016; 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 09:00 HKT 03/Sep/2016

N0 WARNING.

GENERAL SITUATION AT 022100 UTC:
TROUGH 20N 110E 22N 114E 24N 117E S SLOWLY.

MARINE FORECAST FOR 24 HOURS FROM 030100 UTC:

HONG KONG= SW 4. DOWN TO 4000 M IN A FEW SHOWERS AND ISOL SQUALLY TS. TEMP 31-26 C. =
KWANGTUNG= SW 4. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. =
TAIWAN STRAIT= SW 4, BEC NE 4-5. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS AT FIRST. SEA UP TO 2 M. SWELL SW UP TO 2 M. =
BASHI= W TO SW 5-6. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 2-3 M. SWELL SW 2 M. =
PRATAS= SW 5. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 2 M. SWELL SW UP TO 2 M. =
BALINTANG= W TO SW 5-6. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 2-3 M. SWELL SW 2 M. =
SCARBOROUGH= SW 5-6. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 2-3 M. SWELL SW UP TO 2 M. =
PARACEL= SW 4-5. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 2 M. SWELL SW UP TO 2 M. =
TONKIN= SW 4-5. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA UP TO 2 M. =
DANANG= SW 4-5. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. 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.



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 03/Sep/2016

Weather information for south China coastal waters issued by the Hong Kong Observatory at 4:30 p.m. on 03 September 2016

Warnings:
Strong winds in Nan'ao.

Weather Situation:
A trough of low pressure is bringing unsettled weather to the south China coastal waters.

Area forecasts for the next 24 hours

Hong Kong Adjacent Waters:
Southwest force 4, becoming southeast force 4 tomorrow.
Isolated squally showers and thunderstorms.
Moderate seas.

Nan'ao:
Southwest force 5 to 6, becoming southeast force 4 to 5 later.
Scattered squally showers and thunderstorms.
Moderate to rough seas.

Shanwei:
Southwest force 4 to 5, becoming southeast force 4 to 5 later.
Scattered squally showers and thunderstorms.
Moderate seas.

South of Hong Kong and Shangchuan Dao:
Southwest force 4 to 5.
Scattered squally showers and thunderstorms.
Moderate seas.

Outlook for the next 48 hours
Southwesterly winds of force 4 to 5. Isolated squally showers and thunderstorms.

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

Waglan Island Wind southwest force 4
  Visibility 7 Kilometres

Shantou Wind east-southeast force 2
  Visibility 20 Kilometres

Dongsha Wind west force 3
  Visibility 6 Kilometres in thunderstorms

Huangmaozhou Wind west-southwest force 4

Macau Wind south force 2
  Visibility 12 Kilometres in showers

Xisha Wind south-southwest force 3
  Visibility 30 Kilometres


WEATHER FORECAST FOR LOCAL AVIATION
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Weather Forecast for Local Aviation

Bulletin issued at 17:30 HKT 03/SEP/2016
(Next update at 01:30 HKT 04/SEP/2016)
I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     ISOL CUNIM/TS AND ASSOCIATED HAZARDS.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     A TROUGH OF LOW PRESSURE IS BRINGING SHOWERS AND
     THUNDERSTORMS TO 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:  220/5-10
                  TEMPO VRB/15G25 IN TS
       OFFSHORE:  220/10-15                            29-26
   B.   2000 FT:  220/10-15                            24
   C.   5000 FT:  240/15                               19
   D.  10000 FT:  280/10                               12
   E.  18000 FT:  040/10                               MS1
   F.  24000 FT:  080/15                               MS10
   G.  30000 FT:  070/15                               MS23
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      MAINLY CLOUDY WITH A FEW SHOWERS AND ISOLATED THUNDERSTORMS.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1500 FT  SCT 3000 FT.  
      TEMPO FEW CB 1000 FT  SCT 2000 FT  BKN 4000 FT.
   K. VISIBILITY    : 8 KM.  TEMPO 4000 M IN SHOWERS.  
                      TEMPO 2000 M IN TS.
   L. 0 DEG. C LEVEL: 17500 FT      10 DEG. C LEVEL(S) : 11000 FT
   M. TURBULENCE    : MOD TO SEV NEAR CUNIM/TS.
   N. SEA STATE     : 1.0-1.5 M     SEA TEMPERATURE    : 27 DEG
IV.  FURTHER OUTLOOK: 
     LIGHT TO MODERATE EASTERLIES.  
     MAINLY CLOUDY WITH A FEW SHOWERS AND 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 18:30 HKT on 03 Sep 16

VHHK SIGMET 3 VALID 031030/031430 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N2100 E11730 - N1736 E11442 - N1842 E11212 - N2218 E11500 - N2318 E11730 - N2100 E11730 TOP FL420 STNR 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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Last revision date: <03 Sep 2016> 

TROPICAL CYCLONE WARNING FOR SHIPPING
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Tropical Cyclone Warning for Shipping

Tropical Cyclone Warning |  Track and Positions of Tropical Cyclones
Current Weather |  Local Weather Forecast |  9-day Weather Forecast
South China Coastal Waters |  Marine Forecast
Severe Weather Information Centre

Bulletin issued at 21:30 HKT 19/Aug/2016


Tropical Cyclone Warning

At 191200 UTC, Tropical Storm Dianmu (1608) with central pressure 988 hectopascals was centred within 60 nautical miles of two zero point eight degrees north (20.8 N) one zero five point four degrees east (105.4 E) and is forecast to weaken and move west at about 14 knots for the next 24 hours.

Maximum winds near the centre are estimated to be 35 knots.

Radius of over 33 knot winds 60 nautical miles over eastern semicircle, 30 nautical miles elsewhere.
Radius of over 2 metre waves 150 nautical miles.

No further warnings on this Tropical Storm will be issued by the Hong Kong Observatory unless re-intensification takes place.

Forecast position and intensity at 201200 UTC
Dissipated over land.




The Hong Kong Observatory's tropical cyclone warnings for shipping are issued about one and a half hours after the time of observation. They incorporate additional information derived from surface and upper-air data and may therefore be slightly different from the real-time satellite or radar-based positions given in the hourly bulletins for public.

While the forecast positions and track indicate the most likely future path of the tropical cyclone, they may deviate from the actual path taken by the storm.

Tropical Cyclone Track

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 03/Sep/2016
HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     31.0 C
Minimum Air Temperature                     27.5 C
Grass Minimum Temperature                   27.0 C
Relative Humidity                        75 - 92 Percent
Rainfall                                     6.1 mm 
Total rainfall since 1st January          2016.4 mm
Against an average of                     1929.1 mm

Other Stations                Min                  Max
King's Park                  26.7 C               30.9 C
Wong Chuk Hang               26.2 C               30.6 C
Ta Kwu Ling                  26.5 C               32.9 C
Lau Fau Shan                 26.9 C               32.4 C
Tai Po                       26.9 C               31.0 C
Sha Tin                      26.1 C               31.6 C
Tuen Mun                     27.0 C               31.8 C
Tseung Kwan O                26.2 C               30.4 C
Sai Kung                     26.8 C               32.1 C
Cheung Chau                  25.7 C               30.1 C
Chek Lap Kok                 27.8 C               32.4 C
Tsing Yi                     26.4 C               30.7 C
Shek Kong                    26.6 C               32.5 C
Tsuen Wan Ho Koon            25.6 C               29.4 C
Tsuen Wan Shing Mun Valley   26.2 C               31.0 C
Hong Kong Park               26.3 C               30.8 C
Shau Kei Wan                 25.9 C               31.3 C
Kowloon City                 26.2 C               32.1 C
Happy Valley                 26.7 C               31.5 C
Wong Tai Sin                 26.7 C               32.1 C
Stanley                      25.4 C               29.6 C
Kwun Tong                    26.6 C               31.2 C
Sham Shui Po                 26.2 C               31.6 C
Kai Tak Runway Park          26.9 C               31.3 C
Yuen Long Park               27.2 C               32.8 C

Duration of sunshine (King's Park):              0.5 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 8.
Sea surface temperature (Waglan Island):        27.9 C 

Yesterday's (02 Sep 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 02 Sep
Last revision date: <03 Sep 2016> 

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