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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 04:02 HKT 20/Jan/2019

At 4 a.m. at the Hong Kong Observatory the air temperature was 19 degrees Celsius and the relative humidity 83 per cent.

The air temperatures at other places were:

King's Park 18 degrees;
Wong Chuk Hang 19 degrees;
Ta Kwu Ling 18 degrees;
Lau Fau Shan 17 degrees;
Tai Po 18 degrees;
Sha Tin 18 degrees;
Tuen Mun 18 degrees;
Tseung Kwan O 17 degrees;
Sai Kung 18 degrees;
Cheung Chau 17 degrees;
Chek Lap Kok 19 degrees;
Tsing Yi 20 degrees;
Shek Kong 19 degrees;
Tsuen Wan Ho Koon 18 degrees;
Tsuen Wan Shing Mun Valley 19 degrees;
Hong Kong Park 18 degrees;
Shau Kei Wan 18 degrees;
Kowloon City 18 degrees;
Happy Valley 18 degrees;
Wong Tai Sin 19 degrees;
Stanley 18 degrees;
Kwun Tong 19 degrees;
Kai Tak Runway Park 19 degrees;
Yuen Long Park 18 degrees;
Tai Mei Tuk 18 degrees.


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


Climatological Information for 20 Jan


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 03:45 HKT 20/Jan/2019

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

An easterly airstream is affecting the coast of Guangdong. Meanwhile, pressure is rising over central China. The northeast monsoon is expected to reach the south China coast tomorrow. Temperatures will fall significantly over the region.

Weather forecast for today

Mainly cloudy. One or two light rain patches in the morning and at night. Sunny intervals during the day. Temperatures will range between 18 and 23 degrees. Moderate east to northeasterly winds, occasionally fresh offshore later.

Outlook : Temperatures falling significantly on Monday and Tuesday. Fine and dry in the middle and latter parts of this week.


(The above forecast period is valid up to 23:59 HKT today, 20/01/2019; 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/Jan/2019

GALE WARNING AREA: TAIWAN STRAIT.

GENERAL SITUATION AT 190900 UTC:
AN EASTERLY AIRSTREAM IS GENERALLY AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 191300 UTC:

HONG KONG= E TO NE 4-5, 6 LATER. LGT RAIN PATCHES. SEA 2 M, 3 M LATER. SWELL E TO NE UP TO 2 M. TEMP 17-23 C. =
KWANGTUNG= E TO NE 5-6, 7 IN E LATER. DOWN TO 4000 M IN MIST OR RAIN PATCHES. SEA 2-3 M, 4 M IN E LATER. SWELL E TO NE 2 M. =
TAIWAN STRAIT= NE 4-5, N 7-8 LATER. DOWN TO 4000 M IN MIST OR RAIN PATCHES AT FIRST. SEA 2 M, 4-6 M LATER. SWELL NE 2 M. =
BASHI= E TO NE 5-6, OCNL 7. LGT RAIN PATCHES. SEA UP TO 4 M. SWELL E TO NE 2-3 M. =
PRATAS= E TO NE 5-6, 7 LATER. RAIN PATCHES. SEA 2-3 M, 4 M LATER. SWELL E TO NE 2-3 M. =
BALINTANG= E TO NE 6-7. LGT RAIN PATCHES. SEA 3-4 M. SWELL E TO NE 2-3 M. =
SCARBOROUGH= E TO NE 5-6, OCNL 7. LGT RAIN PATCHES. SEA UP TO 4 M. SWELL E TO NE 2-3 M. =
PARACEL= E TO NE 5-6. LGT RAIN PATCHES. SEA 2-3 M. SWELL E TO NE 2-3 M. =
TONKIN= E TO NE 4-5, N 6-7 LATER. DOWN TO 2000 M IN MIST OR RAIN PATCHES. SEA 2 M, 3-4 M LATER. SWELL E TO NE UP TO 2 M. =
DANANG= E TO NE 4-5, OCNL 6. LGT RAIN PATCHES. SEA UP TO 3 M. SWELL E TO NE 2-3 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 03:30 HKT 20/Jan/2019

Weather information for south China coastal waters issued by the Hong Kong Observatory at 3:30 a.m. on 20 January 2019

Warnings:
Strong winds in all areas.

Weather Situation:
An easterly airstream is affecting the south China coastal waters. Meanwhile, pressure is rising over central China. The northeast monsoon is expected to reach the south China coastal waters tomorrow.

Area forecasts for the next 24 hours

Hong Kong Adjacent Waters:
East to northeast force 5 to 6, becoming north force 6 later.
A few light rain patches.
Moderate to rough seas.

Nan'ao and Shanwei:
East to northeast force 6 to 7, becoming north force 7 later.
Rough seas.

South of Hong Kong and Shangchuan Dao:
East to northeast force 5 to 6, becoming north force 6 to 7 later.
Moderate to rough seas.

Outlook for the next 48 hours
Northerly winds of force 7 to 8.

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

Waglan Island Wind north-northeast force 4
  Visibility 8 Kilometres

Shantou Wind south-southeast force 1
  Visibility 15 Kilometres

Dongsha Wind north-northeast force 3
  Visibility 10 Kilometres

Huangmaozhou Wind northeast force 4

Macau Wind northeast force 2
  Visibility 6 Kilometres

Xisha Wind east-northeast force 1
  Visibility 17 Kilometres


WEATHER FORECAST FOR LOCAL AVIATION
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Weather Forecast for Local Aviation

Bulletin issued at 01:30 HKT 20/JAN/2019
(Next update at 9:00-9:30 HKT 20/JAN/2019)
I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     NIL.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     AN EASTERLY AIRSTREAM IS AFFECTING THE COAST OF GUANGDONG.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 0200 TO 1200 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  060/5-10
       OFFSHORE:  080/10-15                            18-23
   B.   2000 FT:  080/10-15                            16
   C.   5000 FT:  160/10                               11
   D.  10000 FT:  240/20                               4
   E.  18000 FT:  240/50                               MS5
   F.  24000 FT:  240/65                               MS16
   G.  30000 FT:  240/75                               MS27
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      MAINLY CLOUDY WITH ONE OR TWO LIGHT RAIN PATCHES.
      SUNNY INTERVALS DURING THE DAY. LOCALISED MIST/HAZE.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 2000 FT SCT 4000 FT
   K. VISIBILITY    : 7 KM. TEMPO 3500 M IN RAIN/MIST/HAZE.
   L. 0 DEG. C LEVEL: 15000 FT      10 DEG. C LEVEL(S) : 6400 FT
   M. TURBULENCE    : MOD OFFSHORE AND NEAR HILLS.
   N. SEA STATE     : 1.0-2.0 M     SEA TEMPERATURE    : 19 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE EAST TO NORTHEASTERLY WINDS, BECOMING MODERATE
     NORTHERLY WINDS TONIGHT. SUNNY INTERVALS. LOCALISED MIST/HAZE.=
===================================================================
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.

There is no Significant Weather Information (SIGMET)

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: <09 Jan 2019> 

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/Jan/2019
HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     21.9 C
Minimum Air Temperature                     17.1 C
Grass Minimum Temperature                   15.2 C
Relative Humidity                        60 - 91 Percent
Rainfall                                     0.2 mm 
Total rainfall since 1st January             4.6 mm
Against an average of                       14.1 mm

Other Stations                Min                  Max
King's Park                  16.1 C               22.3 C
Wong Chuk Hang               16.6 C               22.5 C
Ta Kwu Ling                  15.3 C               24.7 C
Lau Fau Shan                 14.4 C               21.4 C
Tai Po                       16.0 C               21.7 C
Sha Tin                      16.6 C               22.4 C
Tuen Mun                     15.6 C               23.6 C
Tseung Kwan O                16.3 C               21.6 C
Sai Kung                     16.7 C               21.5 C
Cheung Chau                  15.2 C               21.5 C
Chek Lap Kok                 17.3 C               22.9 C
Tsing Yi                     17.2 C               23.0 C
Shek Kong                    14.9 C               24.1 C
Tsuen Wan Ho Koon            14.1 C               22.9 C
Tsuen Wan Shing Mun Valley   16.4 C               23.7 C
Hong Kong Park               16.5 C               22.0 C
Shau Kei Wan                 16.1 C               20.9 C
Kowloon City                 15.9 C               23.2 C
Happy Valley                 16.8 C               22.3 C
Wong Tai Sin                 16.8 C               23.6 C
Stanley                      16.4 C               20.4 C
Kwun Tong                    16.2 C               21.9 C
Kai Tak Runway Park          17.0 C               21.5 C
Yuen Long Park               14.1 C               24.1 C
Tai Mei Tuk               15.6 C               24.0 C

Duration of sunshine (King's Park):              1.7 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 5.
 

Yesterday's (19 Jan 2019) 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                               0.11
Yuen Ng Fan                         0.12
Tai Mei Tuk                         0.12
Sha Tau Kok                         0.10
Kwun Tong                           0.13
Sai Wan Ho                          0.09
King's Park                         0.15
Tsim Bei Tsui                       0.13
Cape D'Aguilar                      0.13
Chek Lap Kok                        0.15

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 19 Jan
Last revision date: <20 Jan 2019> 

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