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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 16:02 HKT 26/Apr/2017

At 4 p.m. at the Hong Kong Observatory the air temperature was 25 degrees Celsius and the relative humidity 96 per cent.
During the past hour the mean UV Index recorded at King's Park was 2. The intensity of UV radiation was low.

The air temperatures at other places were:

King's Park 25 degrees;
Wong Chuk Hang 25 degrees;
Ta Kwu Ling 27 degrees;
Lau Fau Shan 26 degrees;
Tai Po 24 degrees;
Sha Tin 26 degrees;
Tuen Mun 25 degrees;
Tseung Kwan O 24 degrees;
Sai Kung 24 degrees;
Cheung Chau 24 degrees;
Chek Lap Kok 27 degrees;
Tsing Yi 26 degrees;
Shek Kong 28 degrees;
Tsuen Wan Ho Koon 25 degrees;
Tsuen Wan Shing Mun Valley 26 degrees;
Hong Kong Park 25 degrees;
Shau Kei Wan 23 degrees;
Kowloon City 25 degrees;
Happy Valley 26 degrees;
Wong Tai Sin 25 degrees;
Stanley 24 degrees;
Kwun Tong 25 degrees;
Sham Shui Po 26 degrees;
Kai Tak Runway Park 24 degrees;
Yuen Long Park 27 degrees;
Tai Mei Tuk 25 degrees.


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


Climatological Information for 26 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 16:15 HKT 26/Apr/2017

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

The band of thundery showers associated with a trough of low pressure is affecting inland Guangdong, and moving southwards gradually.

At 4 p.m., Tropical Depression Muifa was centred about 590 kilometres northwest of Yap. It is forecast to move west-northwest at about 14 kilometres per hour across the western North Pacific to the east of the Philippines.

Weather forecast for tonight and tomorrow

Cloudy with a few showers. Showers will be more frequent with thunderstorms overnight and visibility will be rather low. Temperatures will range between 20 and 23 degrees tomorrow. Moderate southeasterly winds, becoming northeasterlies tomorrow, fresh at times.

Outlook : The weather will improve in the following couple of days.


(The above forecast period is valid up to 23:59 HKT tomorrow, 27/04/2017; 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 10:50 HKT 26/Apr/2017

N0 WARNING.

GENERAL SITUATION AT 252100 UTC:
A SOUTHERLY AIRSTREAM IS AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 260250 UTC:

HONG KONG= S TO SE 4-5, NE 4-5 LATER. DOWN TO 500 M IN FOG PATCHES. ISOL SHOWERS AND TS LATER. SEA 2 M. TEMP 26-21 C. =
KWANGTUNG= S TO SE 4-5, NE UP TO 7 IN E LATER. DOWN TO 2000 M IN MIST PATCHES. ISOL SHOWERS AND TS LATER. SEA 2 M, UP TO 4 M IN E LATER. =
TAIWAN STRAIT= S TO SE 4-5, NE 6-7 LATER. DOWN TO 2000 M IN MIST PATCHES. ISOL SHOWERS AND TS LATER. SEA 2 M, 3-4 M LATER. =
BASHI= S TO SE 4-5, NW 4-5 LATER. CLD. SEA 2 M. =
PRATAS= S TO SE 4-5, NW 4-5 LATER. RAIN PATCHES. SEA 2 M. =
BALINTANG= S TO SE 4-5, NW 4-5 LATER. FINE. SEA 2 M. =
SCARBOROUGH= SE 4-5, NW 4-5 LATER. FINE. SEA UP TO 2 M. =
PARACEL= S 4-5. DOWN TO 2000 M IN MIST PATCHES IN N. ISOL SHOWERS AND TS IN N LATER. SEA UP TO 2 M. =
TONKIN= S 4-5, NE 5 LATER. DOWN TO 2000 M IN MIST PATCHES. ISOL SHOWERS AND TS LATER. SEA UP TO 2 M. =
DANANG= S 4-5. DOWN TO 2000 M IN MIST PATCHES. 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 16:30 HKT 26/Apr/2017

Weather information for south China coastal waters issued by the Hong Kong Observatory at 4:30 p.m. on 26 April 2017

Warnings:
Strong winds in Nan'ao, Shanwei, south of Hong Kong and Shangchuan Dao.

Weather Situation:
A trough of low pressure over inland Guangdong is moving southwards gradually. The band of thundery showers associated with it will affect the coastal waters of Guangdong.

Area forecasts for the next 24 hours

Hong Kong Adjacent Waters:
Southeast force 4 to 5, becoming northeast force 4 to 5.
Visibility rather low, isolated squally showers and thunderstorms.
Moderate seas.

Nan'ao and Shanwei:
Southeast force 4 to 5, becoming northeast force 6 to 7.
Isolated squally showers and thunderstorms.
Moderate seas, becoming rough.

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

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

Outlook for the next 48 hours
Northeasterly winds of force 5 to 6, occasionally force 7 at first. Isolated squally showers and thunderstorms.

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

Waglan Island Wind variable force 1
  Visibility 1200 Metres

Shantou Wind west-southwest force 2
  Visibility 13 Kilometres

Dongsha Wind south-southwest force 2
  Visibility 10 Kilometres

Huangmaozhou Wind south-southeast force 2

Macau Wind south-southeast force 1
  Visibility 500 Metres in fog

Xisha Wind south-southwest force 3
  Visibility 30 Kilometres


WEATHER FORECAST FOR LOCAL AVIATION
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Weather Forecast for Local Aviation

Bulletin issued at 09:00 HKT 26/APR/2017
(Next update at 17:30 HKT 26/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 HUMID SOUTHEASTERLY AIRSTREAM IS AFFECTING THE
     COAST OF GUANGDONG.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1000 TO 2000 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  120/10
                  TEMPO VRB/15G25 IN TS
       OFFSHORE:  120/15                               23-28
   B.   2000 FT:  190/15                               21
   C.   5000 FT:  220/15                               17
   D.  10000 FT:  240/20                               9
   E.  18000 FT:  250/25                               MS5
   F.  24000 FT:  260/30                               MS16
   G.  30000 FT:  270/45                               MS30
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      MAINLY CLOUDY WITH A FEW SHOWERS AND ISOLATED
      THUNDERSTORMS.  LOCALIZED MIST.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1200 FT  SCT 2500 FT  BKN 10000 FT.  TEMPO
      FEW CB 1000 FT  SCT 2000 FT  BKN 4000 FT.
   K. VISIBILITY    : 7 KM.  TEMPO 2000 M IN TS/SHOWERS/MIST.
   L. 0 DEG. C LEVEL: 15500 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    : 22 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE SOUTHEASTERLY WINDS, BECOMING MODERATE
     TO FRESH NORTHEASTERLY WINDS.  CLOUDY WITH A FEW
     SHOWERS AND ISOLATED THUNDERSTORMS.  LOCALIZED
     FOG/MIST.=
===================================================================
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 14:30 HKT on 26 Apr 17

VHHK SIGMET 1 VALID 260230/260630 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N1942 E11130 - N2124 E11130 - N2230 E11342 - N2254 E11500 - N2042 E11506 - N1948 E11300 - N1942 E11130 TOP FL380 MOV E 10KT NC= VHHK SIGMET 3 VALID 260630/261030 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N1748 E11300 - N1854 E11200 - N2136 E11148 - N2224 E11336 - N2312 E11606 - N2124 E11600 - N1748 E11300 TOP FL380 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: <26 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 26/Apr/2017
HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     22.9 C
Minimum Air Temperature                     20.7 C
Grass Minimum Temperature                   21.1 C
Relative Humidity                        85 - 98 Percent
Rainfall                                    10.9 mm 
Total rainfall since 1st January           128.1 mm
Against an average of                      308.2 mm

Other Stations                Min                  Max
King's Park                  20.2 C               22.5 C
Wong Chuk Hang               20.5 C               23.3 C
Ta Kwu Ling                  19.7 C               22.7 C
Lau Fau Shan                 19.4 C               23.6 C
Tai Po                       20.2 C               22.2 C
Sha Tin                      20.3 C               23.2 C
Tuen Mun                     20.6 C               23.5 C
Tseung Kwan O                19.9 C               22.2 C
Sai Kung                     20.2 C               22.5 C
Cheung Chau                  20.0 C               22.7 C
Chek Lap Kok                 21.0 C               25.1 C
Tsing Yi                     20.4 C               23.7 C
Shek Kong                    20.3 C               25.4 C
Tsuen Wan Ho Koon            19.7 C               22.3 C
Tsuen Wan Shing Mun Valley   20.5 C               23.2 C
Hong Kong Park               20.1 C               22.9 C
Shau Kei Wan                 20.1 C               22.3 C
Kowloon City                 20.0 C               22.4 C
Happy Valley                 20.8 C               24.1 C
Wong Tai Sin                 20.3 C               23.7 C
Stanley                      20.7 C               22.8 C
Kwun Tong                    20.3 C               22.7 C
Sham Shui Po                 20.6 C               24.6 C
Kai Tak Runway Park          20.9 C               23.2 C
Yuen Long Park               20.0 C               25.2 C
Tai Mei Tuk               19.5 C               22.1 C

Duration of sunshine (King's Park):              0 H
The mean UV index recorded at King's Park yesterday was 0.7,
the UV intensity was Low.
The maximum UV index for yesterday was 2.
 

Yesterday's (25 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 25 Apr
Last revision date: <26 Apr 2017> 

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