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Weather Information for South China Coastal Waters

Bulletin issued at 12:02 HKT 13/Apr/2018

At noon at the Hong Kong Observatory the air temperature was 29 degrees Celsius and the relative humidity 69 per cent.
During the past hour the mean UV Index recorded at King's Park was 4. The intensity of UV radiation was moderate.

The air temperatures at other places were:

King's Park 29 degrees;
Wong Chuk Hang 28 degrees;
Ta Kwu Ling 29 degrees;
Lau Fau Shan 29 degrees;
Tai Po 27 degrees;
Sha Tin 29 degrees;
Tuen Mun 27 degrees;
Tseung Kwan O 28 degrees;
Sai Kung 26 degrees;
Cheung Chau 28 degrees;
Chek Lap Kok 29 degrees;
Tsing Yi 29 degrees;
Shek Kong 30 degrees;
Tsuen Wan Ho Koon 27 degrees;
Tsuen Wan Shing Mun Valley 28 degrees;
Hong Kong Park 28 degrees;
Shau Kei Wan 26 degrees;
Kowloon City 29 degrees;
Happy Valley 29 degrees;
Wong Tai Sin 28 degrees;
Stanley 27 degrees;
Kwun Tong 28 degrees;
Sham Shui Po 29 degrees;
Kai Tak Runway Park 26 degrees;
Yuen Long Park 30 degrees;
Tai Mei Tuk 28 degrees.

A trace of rainfall was recorded at the Hong Kong Observatory between midnight last night and midday today.


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


Climatological Information for 13 Apr


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 11:45 HKT 13/Apr/2018

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

A southerly airstream is affecting the coastal areas of Guangdong.

Weather forecast for this afternoon and tonight

Mainly fine and hot in the afternoon. Cloudy periods tonight. Moderate southerly winds.

Outlook : Hot with sunny periods tomorrow. Temperatures falling on Sunday. Showery with a few thunderstorms early next week.


(The above forecast period is valid up to 23:59 HKT today, 13/04/2018; 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 13/Apr/2018

N0 WARNING.

GENERAL SITUATION AT 122100 UTC:
A SOUTHERLY AIRSTREAM IS AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 130100 UTC:

HONG KONG= S 3-4. DOWN TO 4000 M IN MIST PATCHES. ISOL SHOWERS. TEMP 30-24 C. =
KWANGTUNG= S TO SE 4-5. DOWN TO 2000 M IN MIST PATCHES. ISOL SHOWERS. SEA UP TO 2 M. =
TAIWAN STRAIT= S TO SE 4-5. DOWN TO 500 M IN FOG OR RAIN PATCHES. SEA UP TO 2 M. =
BASHI= S TO SE 4-5, OCNL 6. ISOL SHOWERS. SEA UP TO 3 M. =
PRATAS= S TO SE 4-5. FINE. SEA UP TO 2 M. =
BALINTANG= S TO SE 4-5, OCNL 6. FINE. SEA UP TO 3 M. =
SCARBOROUGH= S TO SE 4-5. FINE. SEA UP TO 2 M. =
PARACEL= S TO SE 4-5, OCNL 6. DOWN TO 4000 M IN MIST OR LGT RAIN PATCHES IN N. SEA UP TO 3 M. =
TONKIN= S 5-6. DOWN TO 4000 M IN MIST OR LGT RAIN PATCHES. SEA 2-3 M. =
DANANG= S TO SE 5, OCNL 6. DOWN TO 4000 M IN MIST OR LGT RAIN PATCHES. SEA UP TO 3 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 12:30 HKT 13/Apr/2018

Weather information for south China coastal waters issued by the Hong Kong Observatory at 12:30 p.m. on 13 April 2018

Weather Situation:
A southerly airstream is affecting the south China coastal waters.

Area forecasts for the next 24 hours

Hong Kong Adjacent Waters:
South force 3 to 4.
Mist patches. Isolated showers.
Slight to moderate seas.

Nan'ao and Shanwei:
South to southeast force 4.
Moderate seas.

South of Hong Kong and Shangchuan Dao:
South force 4 to 5.
Moderate seas.

Outlook for the next 48 hours
Southerly winds of force 4 to 5, becoming north to northeasterly winds of force 6. Isolated showers and thunderstorms.

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

Waglan Island Wind east force 1
  Visibility 41 Kilometres

Shantou Wind south force 1
  Visibility 26 Kilometres

Huangmaozhou Wind southeast force 3

Macau Wind south-southeast force 3
  Visibility 17 Kilometres

Xisha Wind south force 2
  Visibility 28 Kilometres


WEATHER FORECAST FOR LOCAL AVIATION
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Weather Forecast for Local Aviation

Bulletin issued at 12:30 HKT 13/APR/2018
(Next update at 17:30 HKT 13/APR/2018)
I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     STRONG WINDS AND SEV TURB.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     A SOUTHERLY AIRSTREAM IS AFFECTING THE COASTAL
     AREAS OF GUANGDONG.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1300 TO 2300 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  150/10                               30-27
   B.   2000 FT:  180/15-20, OCNL 25                   23
   C.   5000 FT:  200/25                               18
   D.  10000 FT:  250/20                               10
   E.  18000 FT:  270/40                               MS5
   F.  24000 FT:  280/45                               MS16
   G.  30000 FT:  290/55                               MS30
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      MAINLY FINE.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 2000 FT.
   K. VISIBILITY    : 10 KM.
   L. 0 DEG. C LEVEL: 15000 FT      10 DEG. C LEVEL(S) : 10000 FT
   M. TURBULENCE    : MOD TO SEV NEAR HILLS.
   N. SEA STATE     : 1.0-1.5 M     SEA TEMPERATURE    : 22 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE SOUTHERLY WINDS.  MAINLY CLOUDY.=
===================================================================
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 14:15 HKT on 07 Apr 18

VHHK SIGMET 1 VALID 070615/071015 VHHH- VHHK HONG KONG FIR SEV ICE OBS N OF N2030 AND E OF E11230 FL140/200 MOV E 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: <06 Apr 2018> 

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 13/Apr/2018
HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     28.1 C
Minimum Air Temperature                     23.9 C
Grass Minimum Temperature                   22.6 C
Relative Humidity                        68 - 89 Percent
Rainfall                                       0 mm 
Total rainfall since 1st January            89.4 mm
Against an average of                      238.7 mm

Other Stations                Min                  Max
King's Park                  23.2 C               28.2 C
Wong Chuk Hang               22.7 C               27.3 C
Ta Kwu Ling                  22.9 C               29.2 C
Lau Fau Shan                 22.5 C               28.1 C
Tai Po                       22.6 C               28.3 C
Sha Tin                      22.6 C               28.4 C
Tuen Mun                     23.3 C               27.6 C
Tseung Kwan O                22.6 C               28.2 C
Sai Kung                     22.7 C               25.5 C
Cheung Chau                  22.5 C               27.3 C
Chek Lap Kok                 24.0 C               30.6 C
Tsing Yi                     23.3 C               28.2 C
Shek Kong                    22.6 C               29.6 C
Tsuen Wan Ho Koon            22.1 C               26.8 C
Tsuen Wan Shing Mun Valley   22.7 C               28.4 C
Hong Kong Park               23.1 C               26.6 C
Shau Kei Wan                 22.6 C               27.3 C
Kowloon City                 23.2 C               28.9 C
Happy Valley                 23.2 C               28.6 C
Wong Tai Sin                 23.5 C               28.1 C
Stanley                      23.0 C               27.3 C
Kwun Tong                    23.0 C               28.9 C
Sham Shui Po                 23.6 C               27.8 C
Kai Tak Runway Park          23.3 C               27.6 C
Yuen Long Park               22.8 C               28.6 C
Tai Mei Tuk               22.5 C               28.8 C

Duration of sunshine (King's Park):              5.3 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 4.
Sea surface temperature (Waglan Island):        23.6 C 

Yesterday's (12 Apr 2018) average ambient gamma radiation
dose rate taken outdoors in Hong Kong ranged from 0.08 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                           0.08
Tap Mun                             0.09
Kat O                               0.10
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                         0.15
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 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 12 Apr
Last revision date: <13 Apr 2018> 

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