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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 15:02 HKT 23/Aug/2018

At 3 p.m. at the Hong Kong Observatory the air temperature was 31 degrees Celsius and the relative humidity 75 per cent.
During the past hour the mean UV Index recorded at King's Park was 6. The intensity of UV radiation was high.

The air temperatures at other places were:

King's Park 31 degrees;
Wong Chuk Hang 31 degrees;
Ta Kwu Ling 32 degrees;
Lau Fau Shan 31 degrees;
Tai Po 31 degrees;
Sha Tin 33 degrees;
Tuen Mun 31 degrees;
Tseung Kwan O 32 degrees;
Sai Kung 33 degrees;
Cheung Chau 29 degrees;
Chek Lap Kok 30 degrees;
Tsing Yi 31 degrees;
Shek Kong 33 degrees;
Tsuen Wan Ho Koon 30 degrees;
Tsuen Wan Shing Mun Valley 31 degrees;
Hong Kong Park 31 degrees;
Shau Kei Wan 32 degrees;
Kowloon City 32 degrees;
Happy Valley 33 degrees;
Wong Tai Sin 33 degrees;
Stanley 30 degrees;
Kwun Tong 33 degrees;
Sham Shui Po 32 degrees;
Kai Tak Runway Park 32 degrees;
Yuen Long Park 32 degrees;
Tai Mei Tuk 32 degrees.

Here is the information on Tropical Depression at noon:
Location: 23.1 degrees north, 120.3 degrees east.


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


Climatological Information for 23 Aug


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 14:45 HKT 23/Aug/2018

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

Showers are affecting the coast of Guangdong and the northern part of the South China Sea.

Besides, the area of low pressure near Taiwan has intensified into a tropical depression. At noon, the tropical depression was centred about 50 kilometres north of Gaoxiong. It is forecast to be slow-moving and linger around Taiwan. Meanwhile, Typhoon Cimaron was centred about 400 kilometres east of Kagoshima. It is forecast to move north at about 32 kilometres per hour towards Japan. Typhoon Soulik was centred about 100 kilometres west-northwest of Jeju. It is forecast to move north or north-northeast at about 12 kilometres per hour towards the Korean Peninsula.

Weather forecast for this afternoon and tonight

Mainly cloudy with a few showers and isolated thunderstorms. Sunny intervals in the afternoon. Light winds.

Outlook : Sunny intervals and a few showers in the next few days.


(The above forecast period is valid up to 23:59 HKT today, 23/08/2018; 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 23/Aug/2018

N0 WARNING.

GENERAL SITUATION AT 222100 UTC:
A SOUTHWESTERLY AIRSTREAM IS GENERALLY AFFECTING THE FORECAST AREAS. LOW 994 HPA 22N 120E NE SLOWLY INTST NC.

MARINE FORECAST FOR 24 HOURS FROM 230100 UTC:

HONG KONG= W TO SW 3-4. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS.. TEMP 31-27 C. =
KWANGTUNG= W TO SW 4-5, OCNL 6 IN E. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 2 M, UP TO 3 M IN E. SWELL SW UP TO 2 M. =
TAIWAN STRAIT= NE 5-6, BEC SW 5-6. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 2-3 M. SWELL SW 2 M. =
BASHI= SW 6-7. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 3-4 M. SWELL SW 2 M. =
PRATAS= SW 5-6, OCNL 7. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA UP TO 4 M. SWELL SW 2 M. =
BALINTANG= SW 6-7. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 3-4 M. SWELL SW 2 M. =
SCARBOROUGH= SW 6-7. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 3-4 M. SWELL SW 2 M. =
PARACEL= SW 4-5. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 2 M. SWELL S TO SW 2 M. =
TONKIN= S TO SW 4-5. ISOL SHOWERS AND TS. SEA UP TO 2 M. SWELL S TO SW 2 M. =
DANANG= SW 4-5. ISOL SHOWERS AND TS. SEA UP TO 2 M. SWELL S TO SW 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 12:30 HKT 23/Aug/2018

Weather information for south China coastal waters issued by the Hong Kong Observatory at 12:30 p.m. on 23 August 2018

Warnings:
Strong winds in Nan'ao.

Weather Situation:
Showers and thunderstorms are affecting the south China coastal waters.

The area of low pressure near Taiwan has intensified into a tropical depression. At noon, the tropical depression with maximum sustained winds of about 45 kilometres per hour near its centre was located near 23.1 degrees north, 120.3 degrees east. It is forecast to be slow-moving and linger around Taiwan.

Area forecasts for the next 24 hours

Hong Kong Adjacent Waters:
West to southwest force 3 to 4.
Isolated squally showers and thunderstorms.
Slight to moderate seas.

Nan'ao:
West to southwest force 4 to 5, occasionally force 6.
Isolated squally showers and thunderstorms.
Moderate to rough seas.

Shanwei:
West to southwest force 4 to 5.
Isolated squally showers and thunderstorms.
Moderate seas.

South of Hong Kong and Shangchuan Dao:
West to southwest force 4.
Isolated 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 west force 4
  Visibility 24 Kilometres

Shantou Wind southwest force 2
  Visibility 19 Kilometres

Huangmaozhou Wind northwest force 3

Macau Wind northwest force 1
  Visibility 11 Kilometres

Xisha Wind southwest force 4
  Visibility 12 Kilometres


WEATHER FORECAST FOR LOCAL AVIATION
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Weather Forecast for Local Aviation

Bulletin issued at 12:30 HKT 23/AUG/2018
(Next update at 17:30 HKT 23/AUG/2018)
I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     ISOL CUNIM/TS AND ASSOCIATED HAZARDS.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     SHOWERS ARE AFFECTING THE COAST OF GUANGDONG AND
     THE NORTHERN PART OF THE SOUTH CHINA SEA.
     BESIDES, THE AREA OF LOW PRESSURE NEAR TAIWAN
     HAS INTENSIFIED INTO A TROPICAL DEPRESSION.  AT
     NOON, THE TROPICAL DEPRESSION WAS CENTRED NEAR
     23.1 DEGREES NORTH, 120.3 DEGREES EAST.  IT IS
     FORECAST TO BE SLOW-MOVING AND LINGER AROUND
     TAIWAN.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1300 TO 2300 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  250/5-10
                  TEMPO VRB/20G30 IN TS
       OFFSHORE:  250/10-15                            32-27
   B.   2000 FT:  300/15, OCNL 20                      25
   C.   5000 FT:  320/15                               21
   D.  10000 FT:  340/10                               12
   E.  18000 FT:  050/10                               MS2
   F.  24000 FT:  030/10                               MS11
   G.  30000 FT:  350/10                               MS22
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      SUNNY INTERVALS WITH A FEW SHOWERS AND SQUALLY
      THUNDERSTORMS.  LOCALIZED HAZE/MIST.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1200 FT  SCT 3000 FT  BKN 10000 FT.  TEMPO
      FEW CB 1000 FT  SCT 2000 FT  BKN 4000 FT.
   K. VISIBILITY    : 7 KM.  TEMPO 4000 M IN SHOWERS/HAZE/MIST.
                      TEMPO 2000 M IN TS.
   L. 0 DEG. C LEVEL: 17000 FT      10 DEG. C LEVEL(S) : 11000 FT
   M. TURBULENCE    : MOD TO SEV NEAR CUNIM/TS.
                      MOD OFFSHORE AND NEAR HILLS.
   N. SEA STATE     : 1.5 M         SEA TEMPERATURE    : 27 DEG
IV.  FURTHER OUTLOOK: 
     LIGHT TO MODERATE WEST TO SOUTHWESTERLY WINDS.
     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 14:35 HKT on 23 Aug 18

VHHK SIGMET 1 VALID 230240/230640 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N2100 E11730 - N1824 E11518 - N1930 E11300 - N2200 E11554 - N2318 E11730 - N2100 E11730 TOP FL480 STNR NC= VHHK SIGMET 2 VALID 230640/231040 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N2100 E11730 - N1812 E11512 - N1824 E11254 - N2200 E11554 - N2330 E11730 - N2100 E11730 TOP FL460 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: <23 Aug 2018> 

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 15:31 HKT 23/Aug/2018


Tropical Cyclone Warning

At 230600 UTC, the tropical depression near Taiwan with central pressure 992 hectopascals was centred within 60 nautical miles of two three point four degrees north (23.4 N) one two zero point four degrees east (120.4 E) and is forecast to be slow moving for the next 24 hours.

Maximum winds near the centre are estimated to be 30 knots.

Radius of over 2 metre waves 120 nautical miles.

Forecast position and intensity at 240600 UTC
Two four point eight degrees north (24.8 N)
One two zero point nine degrees east (120.9 E)
Maximum winds 30 knots.

Forecast position and intensity at 250600 UTC
Two five point one degrees north (25.1 N)
One one nine point one degrees east (119.1 E)
Maximum winds 30 knots.

Forecast position and intensity at 260600 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 23/Aug/2018
HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     31.8 C
Minimum Air Temperature                     24.7 C
Grass Minimum Temperature                   23.9 C
Relative Humidity                        68 - 93 Percent
Rainfall                                    26.4 mm 
Total rainfall since 1st January          1349.1 mm
Against an average of                     1800.0 mm

Other Stations                Min                  Max
King's Park                  24.3 C               32.0 C
Wong Chuk Hang               24.7 C               31.5 C
Ta Kwu Ling                  23.8 C               33.2 C
Lau Fau Shan                 23.3 C               32.1 C
Tai Po                       24.5 C               33.0 C
Sha Tin                      24.5 C               33.6 C
Tuen Mun                     24.4 C               32.9 C
Tseung Kwan O                24.5 C               33.0 C
Sai Kung                     25.2 C               32.5 C
Cheung Chau                  24.3 C               31.9 C
Chek Lap Kok                 24.2 C               33.3 C
Tsing Yi                     24.7 C               32.4 C
Shek Kong                    24.3 C               34.0 C
Tsuen Wan Ho Koon            23.8 C               30.8 C
Tsuen Wan Shing Mun Valley   24.4 C               32.8 C
Hong Kong Park               24.0 C               32.7 C
Shau Kei Wan                 24.7 C               33.2 C
Kowloon City                 23.5 C               33.0 C
Happy Valley                 24.9 C               33.4 C
Wong Tai Sin                 23.9 C               33.5 C
Stanley                      24.9 C               31.1 C
Kwun Tong                    24.3 C               33.3 C
Sham Shui Po                 24.3 C               33.4 C
Kai Tak Runway Park          24.2 C               32.9 C
Yuen Long Park               24.2 C               34.3 C
Tai Mei Tuk               23.2 C               32.4 C

Duration of sunshine (King's Park):              8.5 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.
 

Yesterday's (22 Aug 2018) average ambient gamma radiation
dose rate taken outdoors in Hong Kong ranged from 0.09 to
0.15 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                         0.13
Tai Mei Tuk                         0.13
Sha Tau Kok                         0.11
Kwun Tong                           0.13
Sai Wan Ho                          0.09
King's Park                         0.15
Tsim Bei Tsui                       0.14
Cape D'Aguilar                      0.14
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 22 Aug
Last revision date: <23 Aug 2018> 

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