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

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9-day Weather Forecast | UV Index Forecast
Weather Information for South China Coastal Waters

Bulletin issued at 07:02 HKT 11/Oct/2017

At 7 a.m. at the Hong Kong Observatory the air temperature was 28 degrees Celsius and the relative humidity 78 per cent.

The air temperatures at other places were:

King's Park 28 degrees;
Wong Chuk Hang 29 degrees;
Ta Kwu Ling 27 degrees;
Lau Fau Shan 27 degrees;
Tai Po 29 degrees;
Sha Tin 29 degrees;
Tuen Mun 29 degrees;
Tseung Kwan O 28 degrees;
Sai Kung 29 degrees;
Cheung Chau 28 degrees;
Chek Lap Kok 30 degrees;
Tsing Yi 29 degrees;
Shek Kong 29 degrees;
Tsuen Wan Ho Koon 27 degrees;
Tsuen Wan Shing Mun Valley 28 degrees;
Hong Kong Park 29 degrees;
Shau Kei Wan 29 degrees;
Kowloon City 28 degrees;
Happy Valley 29 degrees;
Wong Tai Sin 28 degrees;
Stanley 28 degrees;
Kwun Tong 28 degrees;
Sham Shui Po 29 degrees;
Kai Tak Runway Park 29 degrees;
Yuen Long Park 29 degrees;
Tai Mei Tuk 28 degrees.


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


Climatological Information for 11 Oct


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 06:45 HKT 11/Oct/2017

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

The northeast monsoon is affecting the coast of Guangdong.

Weather forecast for today

Sunny periods. One or two rain patches in the morning and at night. The maximum temperature will be about 32 degrees. Moderate east to northeasterly winds, fresh offshore at first.

Outlook : Sunny periods tomorrow. Windy and slightly cooler in the latter part of this week.


(The above forecast period is valid up to 23:59 HKT today, 11/10/2017; 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 10/Oct/2017

N0 WARNING.

GENERAL SITUATION AT 100900 UTC:
A NORTHEAST MONSOON IS AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 101300 UTC:

HONG KONG= E TO NE 4-5, OCNL 6 AT FIRST. ONE OR TWO RAIN PATCHES. SEA UP TO 2 M. SWELL E TO NE 2 M. TEMP 28-32 C. =
KWANGTUNG= E TO NE 5-6. ISOL SHOWERS AND TS. SEA 2-3 M. SWELL E TO NE 2-3 M. =
TAIWAN STRAIT= NE 6-7. FINE. SEA 3-4 M. SWELL NE 2-3 M. =
BASHI= E 6-7. ISOL SHOWERS AND TS. SEA 3-4 M. SWELL E TO NE 3-4 M. =
PRATAS= E 5-6, UP TO 7 LATER. FINE. SEA 2-3 M, UP TO 4 M LATER. SWELL E TO NE 3-4 M. =
BALINTANG= E 6-7. ISOL SHOWERS AND TS. SEA 3-4 M. SWELL E TO NE 3-4 M. =
SCARBOROUGH= E TO NE 5-6. ISOL SHOWERS AND TS. SEA 2-3 M. SWELL NE 2-3 M. =
PARACEL= E TO NE 5-6. ISOL SHOWERS AND TS. SEA 2-3 M. SWELL E TO NE 2-3 M. =
TONKIN= E TO SE 4-5. ISOL SHOWERS AND TS. SEA UP TO 2 M. =
DANANG= E TO SE 4-5. ISOL SHOWERS AND TS. SEA UP TO 2 M. SWELL E TO NE 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

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

Bulletin issued at 05:30 HKT 11/Oct/2017

Weather information for south China coastal waters issued by the Hong Kong Observatory at 5:30 a.m. on 11 October 2017

Warnings:
Strong winds in all areas.

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

Area forecasts for the next 24 hours

Hong Kong Adjacent Waters:
East to northeast force 4 to 5, up to force 6 at first.
One or two rain patches.
Moderate to rough seas.

Nan'ao and Shanwei:
East to northeast force 5 to 6.
Moderate to rough seas.

South of Hong Kong and Shangchuan Dao:
East to northeast force 5 to 6.
Isolated showers and thunderstorms.
Moderate to rough seas.

Outlook for the next 48 hours
East to northeasterly winds of force 5 to 6, occasionally up to force 7. Isolated showers and thunderstorms.

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

Waglan Island Wind east-northeast force 5

Shantou Wind east force 1
  Visibility 26 Kilometres

Dongsha Wind northeast force 4
  Visibility 10 Kilometres

Macau Wind east force 4
  Visibility 13 Kilometres

Xisha Wind east force 1
  Visibility 30 Kilometres


WEATHER FORECAST FOR LOCAL AVIATION
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Weather Forecast for Local Aviation

Bulletin issued at 01:30 HKT 11/OCT/2017
(Next update at 9:00-9:30 HKT 11/OCT/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 :
     THE NORTHEAST MONSOON IS AFFECTING THE SOUTH
     CHINA COASTAL AREAS.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 0200 TO 1200 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  080/10-15
                  TEMPO VRB/20G30 IN TS
       OFFSHORE:  080/20-25                            28-34
   B.   2000 FT:  090/20-25, OCNL 30                   25
   C.   5000 FT:  080/20-25                            20
   D.  10000 FT:  090/20                               11
   E.  18000 FT:  090/15                               MS3
   F.  24000 FT:  040/15                               MS14
   G.  30000 FT:  010/30-35                            MS27
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL
   I. WEATHER       : 
      MAINLY CLOUDY WITH ISOLATED SHOWERS AND SQUALLY
      THUNDERSTORMS.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 2500 FT.
      TEMPO FEW CB 1500 FT  SCT 2500 FT  BKN 6000 FT
   K. VISIBILITY    : 10 KM. TEMPO 4000 M IN SHOWERS. TEMPO 2000M IN TS.
   L. 0 DEG. C LEVEL: 17000 FT      10 DEG. C LEVEL(S) : 11000 FT
   M. TURBULENCE    : MOD TO SEV.
   N. SEA STATE     : 3.0-4.0 M     SEA TEMPERATURE    : 29 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE TO FRESH EAST TO NORTHEASTERLY WINDS.
     SUNNY PERIODS DURING THE DAY. ISOLATED SHOWERS
     AND 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 05:17 HKT on 11 Oct 17

VHHK SIGMET 8 VALID 101730/102130 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N1830 E11530 - N1642 E11400 - N1930 E11130 - N2106 E11130 - N2012 E11448 - N1830 E11530 TOP FL430 MOV W 15KT NC= VHHK SIGMET 10 VALID 102130/110130 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N1724 E11436 - N1642 E11400 - N1842 E11212 - N1900 E11312 - N1818 E11436 - N1724 E11436 TOP FL430 MOV W 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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Last revision date: <10 Oct 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 11/Oct/2017
HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     32.3 C
Minimum Air Temperature                     28.6 C
Grass Minimum Temperature                   26.6 C
Relative Humidity                        60 - 80 Percent
Rainfall                                      TRACE 
Total rainfall since 1st January          2461.2 mm
Against an average of                     2275.8 mm

Other Stations                Min                  Max
King's Park                  28.1 C               32.1 C
Wong Chuk Hang               28.9 C               32.6 C
Ta Kwu Ling                  26.4 C               33.5 C
Lau Fau Shan                 27.2 C               33.9 C
Tai Po                       28.7 C               31.4 C
Sha Tin                      28.9 C               33.2 C
Tuen Mun                     28.4 C               33.9 C
Tseung Kwan O                27.3 C               32.6 C
Sai Kung                     28.7 C               31.2 C
Cheung Chau                  28.2 C               32.5 C
Chek Lap Kok                 29.4 C               35.2 C
Tsing Yi                     29.0 C               33.0 C
Shek Kong                    28.6 C               33.1 C
Tsuen Wan Ho Koon            26.6 C               32.1 C
Tsuen Wan Shing Mun Valley   28.3 C               32.9 C
Hong Kong Park               27.6 C               31.5 C
Shau Kei Wan                 28.2 C               31.0 C
Kowloon City                 27.9 C               32.6 C
Happy Valley                 28.6 C               33.3 C
Wong Tai Sin                 28.2 C               32.5 C
Stanley                      28.4 C               31.5 C
Kwun Tong                    28.0 C               31.4 C
Sham Shui Po                 28.7 C               33.9 C
Kai Tak Runway Park          28.8 C               31.7 C
Yuen Long Park               28.8 C               33.9 C
Tai Mei Tuk               27.7 C               32.1 C

Duration of sunshine (King's Park):              9.0 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 8.
Sea surface temperature (Waglan Island):        29.1 C 

Yesterday's (10 Oct 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                         0.12
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                       0.13
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 10 Oct
Last revision date: <11 Oct 2017> 

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