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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 07:02 HKT 20/Apr/2017

At 7 a.m. at the Hong Kong Observatory the air temperature was 26 degrees Celsius and the relative humidity 87 per cent.

The air temperatures at other places were:

King's Park 26 degrees;
Wong Chuk Hang 25 degrees;
Ta Kwu Ling 25 degrees;
Lau Fau Shan 26 degrees;
Tai Po 25 degrees;
Sha Tin 26 degrees;
Tuen Mun 26 degrees;
Tseung Kwan O 25 degrees;
Sai Kung 25 degrees;
Cheung Chau 25 degrees;
Chek Lap Kok 27 degrees;
Tsing Yi 26 degrees;
Shek Kong 26 degrees;
Tsuen Wan Ho Koon 25 degrees;
Tsuen Wan Shing Mun Valley 26 degrees;
Hong Kong Park 26 degrees;
Shau Kei Wan 24 degrees;
Kowloon City 25 degrees;
Happy Valley 26 degrees;
Wong Tai Sin 26 degrees;
Stanley 25 degrees;
Kwun Tong 26 degrees;
Sham Shui Po 26 degrees;
Kai Tak Runway Park 26 degrees;
Yuen Long Park 26 degrees;
Tai Mei Tuk 25 degrees.


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


Climatological Information for 20 Apr


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 06:45 HKT 20/Apr/2017

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

A southerly airstream is affecting the coast of Guangdong. Meanwhile, a band of clouds is covering Guangdong.

Weather forecast for today

Mainly cloudy with a few showers. Sunny intervals during the day. Hot with a maximum temperature of about 30 degrees. Moderate south to southwesterly winds.

Outlook : There will be showers and a few thunderstorms tomorrow. Cooler during the weekend.


(The above forecast period is valid up to 23:59 HKT today, 20/04/2017; 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 19/Apr/2017

N0 WARNING.

GENERAL SITUATION AT 190900 UTC:
A SOUTHERLY AIRSTREAM IS AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 191300 UTC:

HONG KONG= S TO SW 4-5. ISOL SHOWERS AND TS. SEA UP TO 2 M. TEMP 25-29 C. =
KWANGTUNG= S TO SW 4-5. ISOL SHOWERS AND TS. SEA UP TO 2 M. =
TAIWAN STRAIT= SW 4-5, OCNL 6. ISOL SHOWERS AND TS. SEA UP TO 3 M. =
BASHI= S TO SW 4-5, OCNL 6. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 3 M. =
PRATAS= S TO SW 4-5. ISOL SHOWERS. SEA UP TO 2 M. =
BALINTANG= S TO SW 4-5, OCNL 6. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 3 M. =
SCARBOROUGH= S TO SW 4-5, OCNL 6. ISOL SHOWERS AND TS. SEA UP TO 3 M. =
PARACEL= S 4-5, OCNL 6 IN S. ISOL SHOWERS AND TS. SEA UP TO 3 M. =
TONKIN= S 4-5. ISOL SHOWERS AND TS. SEA UP TO 2 M. =
DANANG= S 4-5. ISOL 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 05:30 HKT 20/Apr/2017

Weather information for south China coastal waters issued by the Hong Kong Observatory at 5:30 a.m. on 20 April 2017

Weather Situation:
A southerly airstream is affecting the coastal waters of Guangdong.

Area forecasts for the next 24 hours

Hong Kong Adjacent Waters:
South to southwest force 4 to 5.
Isolated showers and thunderstorms.
Moderate seas.

Nan'ao and Shanwei:
South to southwest force 4, occasionally force 5.
Isolated showers and thunderstorms.
Moderate seas.

South of Hong Kong:
South to southwest force 4 to 5.
Isolated showers and thunderstorms.
Moderate seas.

Shangchuan Dao:
South force 4 to 5.
Isolated showers and thunderstorms.
Moderate seas.

Outlook for the next 48 hours
South to southwesterly winds of force 4 to 5, becoming northerly winds of force 6. Isolated showers and squally thunderstorms.

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

Waglan Island Wind south force 3
  Visibility 8 Kilometres

Shantou Wind east-southeast force 1
  Visibility 8 Kilometres

Dongsha Wind west force 1
  Visibility 10 Kilometres

Huangmaozhou Wind south-southeast force 3

Macau Wind south-southeast force 3
  Visibility 8 Kilometres

Xisha Wind south force 2
  Visibility 23 Kilometres


WEATHER FORECAST FOR LOCAL AVIATION
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Weather Forecast for Local Aviation

Bulletin issued at 01:30 HKT 20/APR/2017
(Next update at 9:00-9:30 HKT 20/APR/2017)
I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     ISOL CUNIM/TS AND ASSOCIATED HAZARDS.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     A SOUTHERLY AIRSTREAM IS PREVAILING OVER THE COAST OF 
     GUANGDONG.  MEANWHILE, SHOWERS ARE AFFECTING INLAND AREAS
     OF GUANGDONG.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 0200 TO 1200 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  180/5-10
                  TEMPO VRB/15G25 IN TS
       OFFSHORE:  180/10-15                            25-30
   B.   2000 FT:  200/15-20                            22
   C.   5000 FT:  240/25                               18
   D.  10000 FT:  240/30                               9
   E.  18000 FT:  240/45                               MS3
   F.  24000 FT:  240/55                               MS14
   G.  30000 FT:  260/55                               MS26
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      MAINLY CLOUDY WITH A FEW SHOWERS. A FEW ISOLATED
      THUNDERSTORMS.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 2000 FT  SCT 4000 FT 
      TEMPO FEW CB 1500 FT SCT 3000 FT.
   K. VISIBILITY    : 10 KM. TEMPO 4000 M IN SHOWERS.  
                      TEMPO 2000 M IN TS.
   L. 0 DEG. C LEVEL: 16000 FT      10 DEG. C LEVEL(S) : 9600 FT
   M. TURBULENCE    : MOD TO SEV NEAR CUNIM/TS. 
                      MOD OFFSHORE AND NEAR HILLS.
   N. SEA STATE     : 1.5-2.0 M     SEA TEMPERATURE    : 24 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE SOUTH TO SOUTHWESTERLY WINDS. SUNNY INTERVALS. 
     A FEW SHOWERS AND ISOLATED 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 05:30 HKT on 18 Apr 17

VHHK SIGMET 1 VALID 172130/180130 VHHH- VHHK HONG KONG FIR EMBD TS FCST S OF N1830 TOP FL380 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: <18 Apr 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 20/Apr/2017
HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     29.4 C
Minimum Air Temperature                     24.7 C
Grass Minimum Temperature                   23.3 C
Relative Humidity                        63 - 88 Percent
Rainfall                                       0 mm 
Total rainfall since 1st January            98.3 mm
Against an average of                      273.5 mm

Other Stations                Min                  Max
King's Park                  24.2 C               29.5 C
Wong Chuk Hang               23.2 C               28.1 C
Ta Kwu Ling                  22.1 C               32.6 C
Lau Fau Shan                 23.6 C               31.3 C
Sha Tin                      24.5 C               31.1 C
Tuen Mun                     23.4 C               30.8 C
Tseung Kwan O                23.8 C               32.3 C
Sai Kung                     23.3 C               32.0 C
Cheung Chau                  23.2 C               30.8 C
Chek Lap Kok                 24.6 C               31.4 C
Tsing Yi                     23.1 C               29.5 C
Shek Kong                    22.7 C               31.8 C
Tsuen Wan Ho Koon            22.1 C               29.9 C
Tsuen Wan Shing Mun Valley   23.1 C               30.5 C
Hong Kong Park               24.4 C               30.2 C
Shau Kei Wan                 23.9 C               31.1 C
Kowloon City                 23.9 C               30.5 C
Happy Valley                 24.5 C               30.0 C
Wong Tai Sin                 24.0 C               30.9 C
Stanley                      24.0 C               28.1 C
Kwun Tong                    24.6 C               30.8 C
Sham Shui Po                 24.4 C               29.8 C
Kai Tak Runway Park          24.6 C               30.7 C
Yuen Long Park               23.5 C               31.9 C
Tai Mei Tuk               24.2 C               31.4 C

Duration of sunshine (King's Park):              10.5 H
The mean UV index recorded at King's Park yesterday was 5,
the UV intensity was Moderate.
The maximum UV index for yesterday was 10.
Sea surface temperature (Waglan Island):        23.3 C 

Yesterday's (19 Apr 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                               0.09
Yuen Ng Fan                         0.12
Tai Mei Tuk                         0.12
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 1987-2016, 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 19 Apr
Last revision date: <20 Apr 2017> 

From Weather Underground