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

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Weather Information for South China Coastal Waters

Bulletin issued at 10:16 HKT 14/Sep/2017

At 10 a.m. at the Hong Kong Observatory the air temperature was 29 degrees Celsius and the relative humidity 62 per cent.
During the past hour the mean UV Index recorded at King's Park was 5. The intensity of UV radiation was moderate.

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

Here is the information on Super Typhoon Talim at 10 a.m.:
Location: 26.7 degrees north, 124.5 degrees east.

Here is the information on Severe Tropical Storm Doksuri at 10 a.m.:
Location: 16.1 degrees north, 112.1 degrees east.


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


Climatological Information for 14 Sep


Local Weather Forecast
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Local Weather Forecast

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

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UV Index Forecast |  Weather Information for South China Coastal Waters

Bulletin updated at 10:15 HKT 14/Sep/2017

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

A strong northeast monsoon is affecting the south China coastal areas.

At 10 a.m., Severe Tropical Storm Doksuri was centred about 80 kilometres south-southwest of Xisha. It is forecast to move west-northwest at about 22 kilometres per hour in the general direction of the vicinity of southern Hainan Island and Vietnam and intensify gradually. Besides, Severe Typhoon Talim has intensified into a super typhoon. At 10 a.m., Talim was centred about 800 kilometres southwest of Kagoshima. It is forecast to move north-northwest at about 12 kilometres per hour across the East China Sea.

Weather forecast for today

Mainly fine. Very hot during the day. Isolated showers later. Moderate to fresh east to northeasterly winds, occasionally strong offshore and on high ground at first.

Outlook : A few showers tomorrow. Mainly fine over the weekend and early next week.


(The above forecast period is valid up to 23:59 HKT today, 14/09/2017; 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 09:00 HKT 14/Sep/2017

HURRICANE WARNING AREAS: PARACEL AND DANANG.
STORM WARNING AREA: TONKIN.
GALE WARNING AREAS: KWANGTUNG, TAIWAN STRAIT AND SCARBOROUGH.

GENERAL SITUATION AT 132100 UTC:
FOR DETAILS ON SEVERE TROPICAL STORM DOKSURI (1719) AND SEVERE TYPHOON TALIM (1718), PLEASE REFER TO THE 3-HRLY SHIPPING WARNINGS.

MARINE FORECAST FOR 24 HOURS FROM 140100 UTC:

HONG KONG= E TO NE 5-6, OCNL 7. ISOL SHOWERS AND TS. SEA UP TO 4 M. SWELL E TO NE 2 M. TEMP 33-27 C. =
KWANGTUNG= E TO NE 6-7, UP TO 8 IN W. DOWN TO 1000 M IN OCNL SQUALLY SHOWERS AND TS IN W. SEA UP TO 6 M. SWELL E TO NE 2 M. =
TAIWAN STRAIT= NE 7-8, SW 5-6 LATER. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 6 M. SWELL NE 3 M. =
BASHI= S TO SW 6-7. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 3-4 M. SWELL E TO NE 3 M. =
PRATAS= E TO NE 5-6. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 2-3 M. SWELL S 2-3 M. =
BALINTANG= S TO SW 5-6. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 2-3 M. SWELL E TO NE 3 M. =
SCARBOROUGH= S TO SE 6-7, UP TO 8 AT FIRST. DOWN TO 500 M IN FRQ HEAVY SQUALLY SHOWERS AND TS. SEA UP TO 6 M. SWELL S 2-3 M. =
PARACEL= CYCLONIC UP TO 12, S TO SE 6-7 LATER. DOWN TO 500 M IN FRQ HEAVY SQUALLY SHOWERS AND TS. SEA UP TO 14 M. SWELL E TO NE 3-5 M. =
TONKIN= N TO NE 6-7, UP TO 10 LATER. DOWN TO 500 M IN FRQ HEAVY SQUALLY SHOWERS AND TS. SEA UP TO 10 M. SWELL E TO NE 2-3 M. =
DANANG= N TO NE 6-7, CYCLONIC UP TO 12 LATER. DOWN TO 500 M IN FRQ HEAVY SQUALLY SHOWERS AND TS. SEA 3-4 M, UP TO 14 M LATER. SWELL E TO NE 3-5 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

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

Bulletin issued at 09:30 HKT 14/Sep/2017

Weather information for south China coastal waters issued by the Hong Kong Observatory at 9:30 a.m. on 14 September 2017

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

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

At 9 a.m., Severe Tropical Storm Doksuri with maximum sustained winds of about 90 kilometres per hour near its centre was located at 16.0 degrees north, 112.3 degrees east It is forecast to move west-northwest at about 22 kilometres per hour in the general direction of the vicinity of southern Hainan Island and Vietnam and intensify gradually. Meanwhile, Severe Typhoon Talim has intensified into a Super Typhoon. Talim with maximum sustained winds of about 185 kilometres per hour near its centre was located at 26.6 degrees north, 124.6 degrees east. It is forecast to move north-northwest at about 12 kilometres per hour across the East China Sea.

Area forecasts for the next 24 hours

Hong Kong Adjacent Waters:
East to northeast force 5 to 6, occasionally force 7.
Isolated showers and thunderstorms.
Moderate to rough seas.

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

South of Hong Kong:
East to northeast force 6 to 7.
Isolated showers and thunderstorms.
Rough seas.

Shangchuan Dao:
East to northeast force 6 to 7, occasionally force 8.
Scattered squally showers and thunderstorms.
Rough to very rough seas.

Outlook for the next 48 hours
East to southeasterly winds of force 5 to 6. Squally showers and thunderstorms.

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

Waglan Island Wind east-northeast force 6
  Visibility 14 Kilometres

Dongsha Wind east-northeast force 4
  Visibility 10 Kilometres

Macau Wind northeast force 3
  Visibility 24 Kilometres

Xisha Wind east-northeast force 5
  Visibility 2800 Metres in showers


WEATHER FORECAST FOR LOCAL AVIATION
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Weather Forecast for Local Aviation

Bulletin issued at 09:30 HKT 14/SEP/2017
(Next update at 17:30 HKT 14/SEP/2017)
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 NORTHEAST MONSOON IS AFFECTING THE
     SOUTH CHINA COASTAL AREAS.
     AT 9 A.M. SEVERE TROPICAL STORM DOKSURI WAS
     CENTRED NEAR 16.0 DEGREES NORTH, 112.3 DEGREES
     EAST. IT IS FORECAST TO MOVE WEST-NORTHWEST AT
     ABOUT 12 KNOTS IN THE GENERAL DIRECTION OF THE
     VICINITY OF SOUTHERN HAINAN ISLAND AND INTENSIFY
     GRADUALLY.
     MEANWHILE, SEVERE TYPHOON TALIM HAS INTENSIFIED
     TO SUPER TYHOON.
     AT 9 A.M. , TALIM WAS CENTRED NEAR 26.6 DEGREES
     NORTH, 124.6 DEGREES EAST.  IT IS FORECAST TO
     MOVE NORTH-NORTHWEST AT ABOUT 6 KNOTS ACROSS
     THE EAST CHINA SEA.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1000 TO 2000 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  080/10-15
                  TEMPO VRB/15G25 IN TS
       OFFSHORE:  080/20-25                            28-34
   B.   2000 FT:  080/20-25                            23
   C.   5000 FT:  080/25                               19
   D.  10000 FT:  090/15                               11
   E.  18000 FT:  100/20                               MS2
   F.  24000 FT:  100/15                               MS13
   G.  30000 FT:  080/15                               MS28
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      MAINLY FINE WITH ISOLATED SHOWERS AND
      THUNDERSTORMS.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 2500 FT TEMPO FEW CB 1000 FT SCT 1500 FT
      BKN 5000 FT
   K. VISIBILITY    : 9 KM.  TEMPO 4000 M IN SHOWERS. TEMPO 2000 M IN TS.
   L. 0 DEG. C LEVEL: 17500 FT      10 DEG. C LEVEL(S) : 10600 FT
   M. TURBULENCE    : MOD TO SEV
   N. SEA STATE     : 3.0-4.0 M     SEA TEMPERATURE    : 28 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE TO FRESH EAST TO NORTHEASTERLY WINDS,
     OCCASIONALLY STRONG OFFSHORE.  MAINLY CLOUDY
     WITH ISOLATED 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 07:25 HKT on 14 Sep 17

VHHK SIGMET 5 VALID 131930/132330 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N1954 E11636 - N1642 E11400 - N1924 E11136 - N2036 E11318 - N1954 E11636 TOP FL420 MOV W 10KT NC= VHHK SIGMET 6 VALID 132330/140330 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N2018 E11654 - N1642 E11400 - N1930 E11130 - N2012 E11130 - N2112 E11330 - N2018 E11654 TOP FL420 MOV W 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.

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: <14 Sep 2017> 

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 09:32 HKT 14/Sep/2017


Tropical Cyclone Warning

Severe Typhoon Talim (1718) has intensified into a Super Typhoon with central pressure 930 hectopascals. At 140000 UTC, it was centred within 30 nautical miles of two six point five degrees north (26.5 N) one two four point six degrees east (124.6 E) and is forecast to move north-northwest at about 6 knots for the next 24 hours.

Maximum winds near the centre are estimated to be 100 knots.

Radius of over 33 knot winds 210 nautical miles.
Radius of over 47 knot winds 120 nautical miles.
Radius of over 63 knot winds 60 nautical miles.
Radius of over 2 metre waves 270 nautical miles.

Forecast position and intensity at 150000 UTC
Two eight point five degrees north (28.5 N)
One two four point seven degrees east (124.7 E)
Maximum winds 95 knots.

Forecast position and intensity at 160000 UTC
Two nine point seven degrees north (29.7 N)
One two six point six degrees east (126.6 E)
Maximum winds 80 knots.

Forecast position and intensity at 170000 UTC
Three two point five degrees north (32.5 N)
One three one point four degrees east (131.4 E)
Maximum winds 65 knots.

Forecast position and intensity at 180000 UTC
Become extratropical low.


Bulletin issued at 09:30 HKT 14/Sep/2017


Tropical Cyclone Warning

At 140000 UTC, Severe Tropical Storm Doksuri (1719) with central pressure 984 hectopascals was centred within 60 nautical miles of one six point zero degrees north (16.0 N) one one two point six degrees east (112.6 E) and is forecast to move west-northwest at about 12 knots for the next 24 hours.

Maximum winds near the centre are estimated to be 50 knots.

Radius of over 33 knot winds 180 nautical miles.
Radius of over 47 knot winds 60 nautical miles.
Radius of over 2 metre waves 240 nautical miles.

Forecast position and intensity at 150000 UTC
One seven point three degrees north (17.3 N)
One zero seven point eight degrees east (107.8 E)
Maximum winds 85 knots.

Forecast position and intensity at 160000 UTC
One eight point five degrees north (18.5 N)
One zero two point one degrees east (102.1 E)
Maximum winds 30 knots.

Forecast position and intensity at 170000 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 14/Sep/2017
HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     34.0 C
Minimum Air Temperature                     28.3 C
Grass Minimum Temperature                   26.6 C
Relative Humidity                        56 - 82 Percent
Rainfall                                       0 mm 
Total rainfall since 1st January          2348.7 mm
Against an average of                     2055.1 mm

Other Stations                Min                  Max
King's Park                  27.9 C               33.0 C
Wong Chuk Hang               28.6 C               33.3 C
Ta Kwu Ling                  25.7 C               33.6 C
Lau Fau Shan                 26.0 C               33.8 C
Tai Po                       26.6 C               31.7 C
Sha Tin                      27.8 C               33.3 C
Tuen Mun                     26.4 C               33.4 C
Tseung Kwan O                27.5 C               34.0 C
Sai Kung                     28.2 C               31.9 C
Cheung Chau                  27.3 C               33.7 C
Chek Lap Kok                 28.8 C               35.0 C
Shek Kong                    26.6 C               33.6 C
Tsuen Wan Ho Koon            26.1 C               32.4 C
Tsuen Wan Shing Mun Valley   27.1 C               32.3 C
Hong Kong Park               27.7 C               32.6 C
Shau Kei Wan                 27.7 C               32.7 C
Kowloon City                 27.7 C               33.0 C
Happy Valley                 28.2 C               34.1 C
Wong Tai Sin                 27.0 C               33.9 C
Stanley                      28.3 C               33.3 C
Kwun Tong                    27.7 C               32.2 C
Sham Shui Po                 27.8 C               33.6 C
Kai Tak Runway Park          28.7 C               32.6 C
Yuen Long Park               27.2 C               34.0 C
Tai Mei Tuk               26.8 C               32.4 C

Duration of sunshine (King's Park):              8.6 H
The mean UV index recorded at King's Park yesterday was 4,
the UV intensity was Moderate.
The maximum UV index for yesterday was 9.
Sea surface temperature (Waglan Island):        29.0 C 

Yesterday's (13 Sep 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                             0.09
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                          0.09
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 1987-2016, 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 13 Sep
Last revision date: <14 Sep 2017> 

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