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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 13:30 HKT 22/Apr/2017

At 1 p.m. at the Hong Kong Observatory the air temperature was 19 degrees Celsius and the relative humidity 94 per cent.
During the past hour the mean UV Index recorded at King's Park was 1. The intensity of UV radiation was low.

The air temperatures at other places were:

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

Between 11:45 a.m. and 12:45 p.m., the rainfall recorded in various regions were:

Sai Kung 5 to 12 mm;
Kwun Tong 6 to 11 mm;
Tsuen Wan 2 to 10 mm;
Sha Tin 6 to 10 mm;
Wan Chai 7 to 9 mm;
Southern District 6 to 9 mm;
Wong Tai Sin 7 to 9 mm;
Eastern District 6 to 8 mm;
Islands District 0 to 8 mm;
Central & Western District 4 to 8 mm;
Kwai Tsing 4 to 7 mm;
Tai Po 2 to 7 mm;
Kowloon City 4 to 7 mm;
Yau Tsim Mong 5 to 7 mm;
Yuen Long 1 to 6 mm;
Sham Shui Po 6 mm;
Tuen Mun 1 to 5 mm;
North District 0 to 4 mm.


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


Climatological Information for 22 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 12:45 HKT 22/Apr/2017

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

The northeast monsoon is bringing cooler weather to Guangdong. Meanwhile, showers are affecting the coastal areas of Guangdong.

Weather forecast for this afternoon and tonight

Mainly cloudy. A few showers and isolated thunderstorms at first. Bright periods in the afternoon. Moderate to fresh northerly winds.

Outlook : Mainly cloudy in the next couple of days. More showery midweek next week.


(The above forecast period is valid up to 23:59 HKT today, 22/04/2017; 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 09:00 HKT 22/Apr/2017

N0 WARNING.

GENERAL SITUATION AT 212100 UTC:
COLD FRONT 19N 108E 20N 113E 21N 117E S 10KT.

MARINE FORECAST FOR 24 HOURS FROM 220100 UTC:

HONG KONG= N TO NE 5-6. ISOL SHOWERS. SEA 2-3 M. TEMP 25-20 C. =
KWANGTUNG= N TO NE 5-6, OCNL 7. ISOL SHOWERS. SEA UP TO 4 M. SWELL NE UP TO 2 M. =
TAIWAN STRAIT= NE 6-7. ISOL SHOWERS. SEA 3-4 M. SWELL NE UP TO 3 M. =
BASHI= W TO NW 5-6 , BEC NE 6-7. ISOL SHOWERS AND TS. SEA 2-3 M, 3-4 M LATER. SWELL NE UP TO 2 M. =
PRATAS= NE 5-6. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 2-3 M. SWELL NE UP TO 2 M. =
BALINTANG= SW 5-6 , BEC NE 6. ISOL SHOWERS. SEA 2-3 M. SWELL NE UP TO 2 M. =
SCARBOROUGH= SW 4-5, BEC NE 4-5. ISOL SHOWERS AND TS. SEA UP TO 2 M. =
PARACEL= NE 5-6. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 2-3 M. =
TONKIN= N TO NE 5-6, UP TO 7 AT FIRST. ISOL SHOWERS AND TS. SEA 2-3 M, UP TO 4 M AT FIRST. =
DANANG= N TO NE 5-6, UP TO 7 AT FIRST. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 2-3 M, UP TO 4 M AT FIRST. =
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 22/Apr/2017

Weather information for south China coastal waters issued by the Hong Kong Observatory at 12:30 p.m. on 22 April 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:
North to northeast force 5 to 6.
Isolated showers and thunderstorms.
Moderate to rough seas.

Nan'ao and Shanwei:
North to northeast force 5 to 6, occasionally force 7.
Isolated showers and thunderstorms.
Moderate to rough seas.

South of Hong Kong and Shangchuan Dao:
North 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, becoming southeasterly winds of force 4 to 5 later.

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

Waglan Island Wind north force 4
  Visibility 16 Kilometres

Shantou Wind east-southeast force 2
  Visibility 5000 Metres in showers

Dongsha Wind northeast force 3
  Visibility 10 Kilometres

Huangmaozhou Wind north-northeast force 4

Macau Wind north force 3
  Visibility 8 Kilometres in rain

Xisha Wind southwest force 2
  Visibility 19 Kilometres


WEATHER FORECAST FOR LOCAL AVIATION
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Weather Forecast for Local Aviation

Bulletin issued at 11:30 HKT 22/APR/2017
(Next update at 17:30 HKT 22/APR/2017)
I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     ISOL CUNIM/TS AND ASSOCIATED HAZARDS. 
     STRONG WINDS AND SEV TURB OFFSHORE.
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 1000 TO 2000 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  020/10-15
                  TEMPO VRB/20G25 IN TS
       OFFSHORE:  020/20-25                            19-25
   B.   2000 FT:  030/15-20                            17
   C.   5000 FT:  300/10-15                            16
   D.  10000 FT:  270/30                               9
   E.  18000 FT:  260/45                               MS6
   F.  24000 FT:  260/55                               MS17
   G.  30000 FT:  260/65                               MS30
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      1600-2300 FT.
      
   I. WEATHER       : 
      MAINLY CLOUDY WITH A FEW SHOWERS. 
      ISOLATED THUNDERSTORMS AT FIRST
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 2000 FT  SCT 4000 FT.
      FEW CB 1000 FT SCT 2000 FT BKN 4000 FT
   K. VISIBILITY    : 7 KM.  TEMPO 4000 M IN SHOWERS. 
                      TEMPO 2000 M IN TS.
   L. 0 DEG. C LEVEL: 14500 FT      10 DEG. C LEVEL(S) : 9200 FT
   M. TURBULENCE    : MOD TO SEV
   N. SEA STATE     : 2.0-2.5 M     SEA TEMPERATURE    : 23 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE TO OCCASIONALLY FRESH NORTHEASTERLY WINDS.  
     MAINLY CLOUDY WITH A FEW SHOWERS.=
===================================================================
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 13:10 HKT on 22 Apr 17

VHHK SIGMET 1 VALID 220110/220510 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N2030 E11706 - N1906 E11600 - N1800 E11248 - N1900 E11200 - N2030 E11400 - N2030 E11706 TOP FL400 MOV ESE 10KT NC= VHHK SIGMET 2 VALID 220510/220910 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N2000 E11642 - N1806 E11506 - N1736 E11312 - N1900 E11200 - N2000 E11642 TOP FL400 MOV ESE 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: <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 22/Apr/2017
HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     29.4 C
Minimum Air Temperature                     22.8 C
Grass Minimum Temperature                   23.2 C
Relative Humidity                        79 - 94 Percent
Rainfall                                     7.8 mm 
Total rainfall since 1st January           109.2 mm
Against an average of                      283.2 mm

Other Stations                Min                  Max
King's Park                  22.9 C               29.3 C
Wong Chuk Hang               22.1 C               26.8 C
Ta Kwu Ling                  22.1 C               30.4 C
Lau Fau Shan                 22.6 C               29.2 C
Tai Po                       22.9 C               29.8 C
Sha Tin                      23.2 C               29.9 C
Tuen Mun                     23.1 C               28.9 C
Tseung Kwan O                21.6 C               28.3 C
Sai Kung                     22.6 C               29.2 C
Cheung Chau                  22.0 C               29.1 C
Chek Lap Kok                 22.4 C               30.7 C
Tsing Yi                     22.7 C               28.0 C
Shek Kong                    22.9 C               29.7 C
Tsuen Wan Ho Koon            22.4 C               26.0 C
Tsuen Wan Shing Mun Valley   22.8 C               27.8 C
Hong Kong Park               22.6 C               28.0 C
Shau Kei Wan                 22.1 C               28.9 C
Kowloon City                 22.4 C               28.7 C
Happy Valley                 23.2 C               27.9 C
Wong Tai Sin                 22.7 C               28.3 C
Stanley                      22.3 C               28.8 C
Kwun Tong                    22.9 C               28.8 C
Sham Shui Po                 22.3 C               30.5 C
Kai Tak Runway Park          22.8 C               29.1 C
Yuen Long Park               23.2 C               30.3 C
Tai Mei Tuk               21.6 C               29.0 C

Duration of sunshine (King's Park):              0.6 H
The mean UV index recorded at King's Park yesterday was 1,
the UV intensity was Low.
The maximum UV index for yesterday was 6.
 

Yesterday's (21 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 21 Apr
Last revision date: <22 Apr 2017> 

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