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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 00:02 HKT 17/Apr/2017

At midnight at the Hong Kong Observatory the air temperature was 25 degrees Celsius and the relative humidity 90 per cent.

The air temperatures at other places were:

King's Park 24 degrees;
Wong Chuk Hang 23 degrees;
Ta Kwu Ling 23 degrees;
Lau Fau Shan 23 degrees;
Tai Po 23 degrees;
Sha Tin 23 degrees;
Tuen Mun 24 degrees;
Tseung Kwan O 23 degrees;
Sai Kung 23 degrees;
Cheung Chau 23 degrees;
Chek Lap Kok 25 degrees;
Tsing Yi 23 degrees;
Shek Kong 23 degrees;
Tsuen Wan Ho Koon 22 degrees;
Tsuen Wan Shing Mun Valley 22 degrees;
Hong Kong Park 23 degrees;
Shau Kei Wan 23 degrees;
Kowloon City 23 degrees;
Happy Valley 24 degrees;
Wong Tai Sin 23 degrees;
Stanley 24 degrees;
Kwun Tong 24 degrees;
Sham Shui Po 24 degrees;
Kai Tak Runway Park 23 degrees;
Yuen Long Park 24 degrees;
Tai Mei Tuk 23 degrees.

Here is the information on Tropical Depression at 11:00 p.m. yesterday:
Location: 12.5 degrees north, 120.1 degrees east.


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


Climatological Information for 17 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 00:00 HKT 17/Apr/2017

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

A southerly airstream affected the coast of Guangdong yesterday. Locally, it was mainly cloudy with coastal fog in the morning. The visibility at Waglan Island once fell below 500 metres. There were sunny periods during the day. The maximum temperature recorded at the Observatory was 30.2 degrees in the afternoon, the highest so far this year. The southerly airstream will bring hot weather to the coastal areas of Guangdong in the next couple of days.

At 11 p.m. last night, the tropical depression in the vicinity of the Philippines was centred about 240 kilometres south-southwest of Manila. It is forecast to move west-northwest at about 25 kilometres per hour entering the southern part of the South China Sea.

Weather forecast for Hong Kong (Monday, 17 Apr 2017)

Mainly cloudy. Coastal mist at first. Sunny periods during the day. Temperatures will range between 24 and 30 degrees. Light to moderate south to southwesterly winds.

Outlook : Sunny periods in the following couple of days. Showers in the latter part of this week.


(The above forecast period is valid up to 23:59 HKT today, 17/04/2017; 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 16/Apr/2017

N0 WARNING.

GENERAL SITUATION AT 160900 UTC:
A SOUTHERLY AIRSTREAM IS GENERALLY AFFECTING THE FORECAST AREAS. FOR DETAILS ON TROPICAL DEPRESSION NEAR THE PHILIPPINES, PLEASE REFER TO THE 3-HRLY SHIPPING WARNINGS.

MARINE FORECAST FOR 24 HOURS FROM 161300 UTC:

HONG KONG= S TO SW 3-4. DOWN TO 500 M IN FOG OR LGT RAIN PATCHES. TEMP 24-30 C. =
KWANGTUNG= S TO SW 3-4. DOWN TO 500 M IN FOG OR RAIN PATCHES. =
TAIWAN STRAIT= SW 4-5. DOWN TO 500 M IN FOG OR RAIN PATCHES. SEA UP TO 2 M. =
BASHI= SE 4-5, S TO SW 4-5 LATER. FINE. SEA UP TO 2 M. =
PRATAS= E 4-5, S TO SW 4-5 LATER. FINE. SEA UP TO 2 M. =
BALINTANG= SE 4-5, S TO SW 4-5 LATER. FINE. ISOL SHOWERS AND TS LATER. SEA UP TO 2 M. =
SCARBOROUGH= E TO NE 4-5, S 4-5 LATER. ISOL SHOWERS AND TS. SEA UP TO 2 M. =
PARACEL= SE 3-4, S 3-4 LATER. DOWN TO 500 M IN FOG OR RAIN PATCHES IN N. =
TONKIN= SE 3-4, OCNL 5. DOWN TO 500 M IN FOG OR RAIN PATCHES. SEA UP TO 2 M. =
DANANG= SE 3-4, OCNL 5. DOWN TO 500 M IN FOG OR RAIN 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 23:30 HKT 16/Apr/2017

Weather information for south China coastal waters issued by the Hong Kong Observatory at 11:30 p.m. on 16 April 2017

Warnings:
Fog in all areas.

Weather Situation:
A southerly airstream is affecting the coastal waters of Guangdong.

At 11 p.m., the tropical depression in the vicinity of the Philippines with maximum sustained winds of about 45 kilometres per hour near its centre was located near 12.5 degrees north, 120.1 degrees east. It is forecast to move west-northwest at about 25 kilometres per hour entering the southern part of the South China Sea.

Area forecasts for the next 24 hours

Hong Kong Adjacent Waters:
South to southwest force 3 to 4.
Fog patches.
Slight to moderate seas.

Nan'ao, Shanwei, South of Hong Kong and Shangchuan Dao:
South to southwest force 3 to 4.
Fog patches.
Slight to moderate seas.

Outlook for the next 48 hours
Southwesterly winds of force 4 to 5.

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

Waglan Island Wind east force 2
  Visibility 8 Kilometres

Shantou Wind south-southeast force 1
  Visibility 29 Kilometres

Dongsha Wind northeast force 3
  Visibility 10 Kilometres

Huangmaozhou Wind east-southeast force 2

Macau Wind southeast force 1
  Visibility 12 Kilometres

Xisha Wind east-northeast force 1
  Visibility 28 Kilometres


WEATHER FORECAST FOR LOCAL AVIATION
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Weather Forecast for Local Aviation

Bulletin issued at 17:30 HKT 16/APR/2017
(Next update at 01:30 HKT 17/APR/2017)
I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     FOG.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     A SOUTHERLY AIRSTREAM IS AFFECTING THE COAST OF
     GUANGDONG.
     AT 4 P.M., TROPICAL DEPRESSION IN THE VICINITY
     OF THE PHILIPPINES WAS CENTRED NEAR 11.6 DEGREES
     NORTH, 122.3 DEGREES EAST.  IT IS FORECAST TO
     MOVE WEST-NORTHWEST AT ABOUT 14 KNOTS ACROSS THE
     CENTRAL PART OF THE PHILIPPINES.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1800 TO 0400 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  200/5-10
       OFFSHORE:  100/10 BEC 200/10-15                 28-24
   B.   2000 FT:  170/10-15                            21
   C.   5000 FT:  200/10                               19
   D.  10000 FT:  240/15                               11
   E.  18000 FT:  250/25                               MS4
   F.  24000 FT:  270/35                               MS14
   G.  30000 FT:  270/40                               MS28
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      3300 - 3800 FT.
   I. WEATHER       : 
      MAINLY CLOUDY.  LOCALIZED FOG/MIST LATER.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1500 FT  SCT 3000 FT.
   K. VISIBILITY    : 9 KM.  TEMPO 3000 M IN MIST.
                      TEMPO 800 M IN FOG.
   L. 0 DEG. C LEVEL: 16000 FT      10 DEG. C LEVEL(S) : 10600 FT
   M. TURBULENCE    : NIL.
   N. SEA STATE     : 1.0-1.5 M     SEA TEMPERATURE    : 23 DEG
IV.  FURTHER OUTLOOK: 
     LIGHT TO MODERATE SOUTH TO SOUTHWESTERLY WINDS.
     SUNNY PERIODS.  LOCALIZED FOG/MIST AT FIRST.=
===================================================================
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 19:13 HKT on 13 Apr 17

VHHK SIGMET 2 VALID 130715/131115 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N1842 E11212 - N1930 E11130 - N2100 E11130 - N2124 E11348 - N1936 E11436 - N1842 E11212 TOP FL380 MOV E 10KT NC= VHHK SIGMET 3 VALID 131115/131515 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N1730 E11318 - N2000 E11230 - N2030 E11518 - N1900 E11512 - N1748 E11400 - N1730 E11318 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: <17 Apr 2017> 

TROPICAL CYCLONE WARNING FOR SHIPPING
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Tropical Cyclone Warning for Shipping

Tropical Cyclone Warning |  Track and Positions of Tropical Cyclones
Current Weather |  Local Weather Forecast |  9-day Weather Forecast
South China Coastal Waters |  Marine Forecast
Severe Weather Information Centre

Bulletin issued at 00:30 HKT 17/Apr/2017


Tropical Cyclone Warning

At 161500 UTC, the tropical depression in the vicinity of the Philippines with central pressure 1002 hectopascals was centred within 90 nautical miles of one two point five degrees north (12.5 N) one two zero point one degrees east (120.1 E) and is forecast to move northwest at about 12 knots for the next 24 hours.

Maximum winds near the centre are estimated to be 25 knots.

Radius of over 2 metre waves 60 nautical miles.

Forecast position and intensity at 171500 UTC
Dissipated over sea.




The Hong Kong Observatory's tropical cyclone warnings for shipping are issued about one and a half hours after the time of observation. They incorporate additional information derived from surface and upper-air data and may therefore be slightly different from the real-time satellite or radar-based positions given in the hourly bulletins for public.

While the forecast positions and track indicate the most likely future path of the tropical cyclone, they may deviate from the actual path taken by the storm.

Tropical Cyclone Track

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 17/Apr/2017
HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     30.2 C
Minimum Air Temperature                     23.0 C
Grass Minimum Temperature                   23.3 C
Relative Humidity                        63 - 95 Percent
Rainfall                                      TRACE 
Total rainfall since 1st January            98.3 mm
Against an average of                      252.1 mm

Other Stations                Min                  Max
King's Park                  22.6 C               30.3 C
Wong Chuk Hang               22.4 C               28.2 C
Ta Kwu Ling                  23.0 C               30.6 C
Lau Fau Shan                 22.0 C               30.1 C
Tai Po                       22.8 C               28.1 C
Sha Tin                      22.5 C               29.8 C
Tuen Mun                     23.1 C               29.5 C
Tseung Kwan O                22.0 C               29.7 C
Sai Kung                     22.5 C               28.8 C
Cheung Chau                  22.2 C               27.8 C
Chek Lap Kok                 23.5 C               30.2 C
Tsing Yi                     22.9 C               30.0 C
Shek Kong                    21.8 C               30.6 C
Tsuen Wan Ho Koon            21.6 C               29.2 C
Tsuen Wan Shing Mun Valley   22.4 C               30.4 C
Hong Kong Park               22.8 C               29.4 C
Shau Kei Wan                 22.0 C               29.1 C
Kowloon City                 22.6 C               29.9 C
Happy Valley                 23.2 C               30.0 C
Wong Tai Sin                 22.6 C               29.3 C
Stanley                      22.6 C               28.0 C
Kwun Tong                    22.5 C               29.8 C
Sham Shui Po                 23.6 C               30.2 C
Kai Tak Runway Park          22.9 C               28.9 C
Yuen Long Park               22.2 C               31.4 C
Tai Mei Tuk               22.7 C               29.3 C

Duration of sunshine (King's Park):              7.5 H
The mean UV index recorded at King's Park yesterday was 5,
the UV intensity was Moderate.
The maximum UV index for yesterday was 10.
Sea surface temperature (Waglan Island):        22.4 C 

Yesterday's (16 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                             0.08
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 16 Apr
Last revision date: <17 Apr 2017> 

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