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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 03:02 HKT 24/Apr/2017

At 3 a.m. at the Hong Kong Observatory the air temperature was 21 degrees Celsius and the relative humidity 85 per cent.

The air temperatures at other places were:

King's Park 21 degrees;
Wong Chuk Hang 21 degrees;
Ta Kwu Ling 20 degrees;
Lau Fau Shan 19 degrees;
Tai Po 20 degrees;
Sha Tin 20 degrees;
Tuen Mun 21 degrees;
Tseung Kwan O 20 degrees;
Sai Kung 20 degrees;
Cheung Chau 21 degrees;
Chek Lap Kok 21 degrees;
Tsing Yi 21 degrees;
Shek Kong 20 degrees;
Tsuen Wan Ho Koon 19 degrees;
Tsuen Wan Shing Mun Valley 21 degrees;
Hong Kong Park 21 degrees;
Shau Kei Wan 20 degrees;
Kowloon City 20 degrees;
Happy Valley 21 degrees;
Wong Tai Sin 21 degrees;
Stanley 21 degrees;
Kwun Tong 21 degrees;
Sham Shui Po 21 degrees;
Kai Tak Runway Park 21 degrees;
Yuen Long Park 20 degrees;
Tai Mei Tuk 20 degrees.


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


Climatological Information for 24 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 02:45 HKT 24/Apr/2017

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

An easterly airstream is affecting the south China coast. Meanwhile, showers are affecting the region.

Weather forecast for today

Cloudy with a few showers. Isolated thunderstorms at night. Temperatures will range between 20 and 24 degrees. Moderate to fresh easterly winds.

Outlook : More showery with thunderstorms in the following couple of days. The weather will improve towards the weekend.


(The above forecast period is valid up to 23:59 HKT today, 24/04/2017; 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 23/Apr/2017

N0 WARNING.

GENERAL SITUATION AT 230900 UTC:
AN EASTERLY AIRSTREAM IS GENERALLY AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 231300 UTC:

HONG KONG= E 4-5. A FEW SHOWERS. ISOL TS LATER. SEA UP TO 2 M. TEMP 20-24 C. =
KWANGTUNG= E TO NE 5-6. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 2-3 M. SWELL NE 2 M IN E. =
TAIWAN STRAIT= NE 5-6. ISOL SHOWERS. SEA 2-3 M. SWELL NE 2 M. =
BASHI= E TO NE 5-6. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS IN E. SEA 2-3 M. SWELL NE 2-3 M. =
PRATAS= E TO NE 4-5, OCNL 6. ISOL SHOWERS. SEA UP TO 3 M. SWELL NE 2 M. =
BALINTANG= E TO NE 5-6. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS IN E. SEA 2-3 M. SWELL NE 2-3 M. =
SCARBOROUGH= E TO NE 4-5. ISOL SHOWERS. SEA UP TO 2 M. SWELL NE UP TO 2 M. =
PARACEL= E TO SE 4-5. ISOL SHOWERS AND TS IN N. SEA UP TO 2 M. SWELL NE 2 M. =
TONKIN= E TO NE 4-5, BEC SE 4-5. ISOL SHOWERS AND TS. SEA UP TO 2 M. =
DANANG= E TO SE 4-5. ISOL SHOWERS AND TS. SEA UP TO 2 M. SWELL NE 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 03:30 HKT 24/Apr/2017

Weather information for south China coastal waters issued by the Hong Kong Observatory at 3:30 a.m. on 24 April 2017

Warnings:
Strong winds in all areas.

Weather Situation:
An easterly airstream is affecting the south China coastal waters.

Area forecasts for the next 24 hours

Hong Kong Adjacent Waters:
East force 5 to 6.
Isolated showers and thunderstorms.
Moderate to rough seas.

Nan'ao:
East to northeast force 5 to 6.
Isolated showers and thunderstorms.
Moderate to rough seas.

Shanwei and South of Hong Kong:
East force 5 to 6, becoming southeast force 4 to 5 later.
Isolated showers and thunderstorms.
Moderate to rough seas.

Shangchuan Dao:
East force 5 to 6, becoming southeast force 4 to 5.
Isolated squally showers and thunderstorms.
Moderate to rough seas.

Outlook for the next 48 hours
East to southeasterly winds of force 5 to 6, becoming southwesterly winds of force 5 later. Isolated showers and thunderstorms.

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

Waglan Island Wind east-northeast force 5
  Visibility 9 Kilometres

Shantou Wind west-southwest force 1
  Visibility 17 Kilometres

Dongsha Wind east-northeast force 4
  Visibility 10 Kilometres

Huangmaozhou Wind east-northeast force 6

Macau Wind east force 2
  Visibility 6 Kilometres

Xisha Wind east force 1
  Visibility 24 Kilometres


WEATHER FORECAST FOR LOCAL AVIATION
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Weather Forecast for Local Aviation

Bulletin issued at 01:30 HKT 24/APR/2017
(Next update at 9:00-9:30 HKT 24/APR/2017)
I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     ISOL CUNIM/TS AND ASSOCIATED HAZARDS.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     AN EASTERLY AIRSTREAM IS AFFECTING THE SOUTH CHINA COASTAL
     AREAS.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 0200 TO 1200 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  080/10-15
       OFFSHORE:  080/15-20                            19-24
   B.   2000 FT:  120/15-20                            17
   C.   5000 FT:  200/10                               14
   D.  10000 FT:  260/25                               8
   E.  18000 FT:  260/30                               MS5
   F.  24000 FT:  280/30                               MS17
   G.  30000 FT:  280/50                               MS29
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      MAINLY CLOUDY WITH SHOWERS. A FEW ISOLATED THUNDERSTORMS
      LATER.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1200 FT SCT 3500 FT BKN 8000 FT 
      TEMPO FEW CB 1000 FT SCT 2500 FT BKN 4000 FT
   K. VISIBILITY    : 7 KM. TEMPO 3500 M IN SHOWERS.
                      TEMPO 2000 M IN TS.
   L. 0 DEG. C LEVEL: 14500 FT      10 DEG. C LEVEL(S) : 8400 FT
   M. TURBULENCE    : MOD TO SEV NEAR CUNIM/TS. 
                      MOD OFFSHORE AND NEAR HILLS.
   N. SEA STATE     : 2.0-2.5 M     SEA TEMPERATURE    : 23 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE TO FRESH EASTERLY WINDS. MAINLY CLOUDY WITH SHOWERS 
     AND A FEW 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 01:25 HKT on 24 Apr 17

VHHK SIGMET 2 VALID 231725/232125 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N1900 E11200 - N1930 E11130 - N1948 E11130 - N1948 E11336 - N1900 E11336 - N1900 E11200 FL400 MOV ENE 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 24/Apr/2017
HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     21.8 C
Minimum Air Temperature                     19.9 C
Grass Minimum Temperature                   20.7 C
Relative Humidity                        75 - 93 Percent
Rainfall                                     1.4 mm 
Total rainfall since 1st January           117.2 mm
Against an average of                      297.0 mm

Other Stations                Min                  Max
King's Park                  19.3 C               21.8 C
Wong Chuk Hang               19.3 C               21.3 C
Ta Kwu Ling                  18.4 C               22.1 C
Lau Fau Shan                 18.3 C               21.7 C
Tai Po                       18.8 C               21.2 C
Sha Tin                      19.4 C               22.0 C
Tuen Mun                     19.1 C               21.7 C
Tseung Kwan O                18.4 C               21.4 C
Sai Kung                     19.7 C               21.7 C
Cheung Chau                  18.9 C               20.8 C
Chek Lap Kok                 20.3 C               22.9 C
Tsing Yi                     19.7 C               22.2 C
Shek Kong                    19.1 C               21.9 C
Tsuen Wan Ho Koon            18.1 C               20.4 C
Tsuen Wan Shing Mun Valley   19.0 C               21.5 C
Hong Kong Park               19.3 C               21.9 C
Shau Kei Wan                 18.9 C               21.6 C
Kowloon City                 19.2 C               21.6 C
Happy Valley                 20.0 C               22.2 C
Wong Tai Sin                 19.6 C               21.7 C
Stanley                      19.8 C               21.7 C
Kwun Tong                    19.4 C               21.6 C
Sham Shui Po                 19.6 C               22.4 C
Kai Tak Runway Park          20.2 C               22.0 C
Yuen Long Park               18.9 C               21.9 C
Tai Mei Tuk               18.5 C               21.5 C

Duration of sunshine (King's Park):              0 H
The mean UV index recorded at King's Park yesterday was 0.9,
the UV intensity was Low.
The maximum UV index for yesterday was 2.
 

Yesterday's (23 Apr 2017) 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                         0.14
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 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 23 Apr
Last revision date: <24 Apr 2017> 

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