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Weather Information for South China Coastal Waters

Bulletin issued at 12:02 HKT 01/Apr/2017

At noon at the Hong Kong Observatory the air temperature was 22 degrees Celsius and the relative humidity 58 per cent.
During the past hour the mean UV Index recorded at King's Park was 8. The intensity of UV radiation was very high.

Please be reminded that:

The Fire Danger Warning is Yellow and the fire risk is high.

The air temperatures at other places were:

King's Park 21 degrees;
Wong Chuk Hang 21 degrees;
Ta Kwu Ling 21 degrees;
Lau Fau Shan 20 degrees;
Tai Po 20 degrees;
Sha Tin 20 degrees;
Tuen Mun 21 degrees;
Tseung Kwan O 22 degrees;
Sai Kung 20 degrees;
Cheung Chau 20 degrees;
Chek Lap Kok 20 degrees;
Tsing Yi 21 degrees;
Shek Kong 22 degrees;
Tsuen Wan Ho Koon 21 degrees;
Tsuen Wan Shing Mun Valley 22 degrees;
Hong Kong Park 23 degrees;
Shau Kei Wan 21 degrees;
Kowloon City 20 degrees;
Happy Valley 22 degrees;
Wong Tai Sin 21 degrees;
Stanley 20 degrees;
Kwun Tong 20 degrees;
Sham Shui Po 22 degrees;
Kai Tak Runway Park 21 degrees;
Yuen Long Park 22 degrees;
Tai Mei Tuk 22 degrees.

0.2 millimetre of rainfall was recorded at the Hong Kong Observatory between midnight last night and midday today. 48.0 mm of rainfall have been recorded at the Hong Kong Observatory in March this year. The accumulated rainfall since 1st January up to the end of March this year was 75.7 mm compared with the normal of 161.3 mm for the same period.


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


Climatological Information for 1 Apr

Regional Weather in Hong Kong

Information on Tropical Cyclones

Hong Kong Climatology


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 11:45 HKT 01/Apr/2017

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

A dry northeast monsoon is affecting the coastal areas of Guangdong. Locally, the relative humidity over most parts of the territory fell below 60 per cent around noon.

Weather forecast for this afternoon and tonight

Fine and dry. Moderate to fresh northeasterly winds.

Outlook : Fine and dry tomorrow. Sunny periods on Monday and Ching Ming Festival.


(The above forecast period is valid up to 23:59 HKT today, 01/04/2017; Regular update at : around 45 minutes past each hour, 16:15 HKT and 23:15 HKT)

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Marine Weather Information and Forecast

Weather Information for Aviation

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MARINE FORECAST
Traditional Chinese Simplified Chinese

Marine Forecast

Weather Information for the Marine Community

Bulletin issued at 09:00 HKT 01/Apr/2017

GALE WARNING AREAS: TAIWAN STRAIT, BASHI, BALINTANG AND SCARBOROUGH.

GENERAL SITUATION AT 312100 UTC:
COLD FRONT 17N 115E 20N 125E S 10KT.

MARINE FORECAST FOR 24 HOURS FROM 010100 UTC:

HONG KONG= N TO NE 5-6, OCNL 7. FINE. SEA UP TO 4 M. SWELL NE UP TO 2 M. TEMP 21-16 C. =
KWANGTUNG= NE 6-7. FINE. ISOL SHOWERS AT FIRST. SEA 3-4 M. SWELL NE 2 M. =
TAIWAN STRAIT= NE 7, 8 AT FIRST. FINE. ISOL SHOWERS AT FIRST. SEA 4 M, 6 M AT FIRST. SWELL N TO NE 2-3 M. =
BASHI= NE 7, BEC 8. ISOL SHOWERS AT FIRST. SEA 4 M, BEC 6 M. SWELL N TO NE 2-3 M. =
PRATAS= NE 6-7. ISOL SHOWERS. SEA 3-4 M. SWELL NE 2 M. =
BALINTANG= NE 6-7, BEC 8. ISOL SHOWERS AT FIRST. SEA 3-4 M, BEC 6 M. SWELL NE 2-3 M. =
SCARBOROUGH= NE 4-5, BEC 7-8. ISOL SHOWERS AND TS LATER. SEA 2 M, BEC 4-6 M. SWELL NE 2 M, 3 M LATER. =
PARACEL= NE 6-7. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 3-4 M. SWELL NE 2 M. =
TONKIN= N TO NE 6-7. ISOL SHOWERS AND TS. SEA 3-4 M. SWELL NE UP TO 2 M. =
DANANG= N TO NE 6-7. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 3-4 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.


  • Map showing the 10 forecast areas
  • Tidal Information

    • 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 01/Apr/2017

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 12:30 p.m. on 01 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:
    Northeast force 5 to 6.
    Moderate to rough seas.

    Nan'ao, Shanwei, South of Hong Kong and Shangchuan Dao:
    Northeast force 6 to 7.
    Rough seas.

    Outlook for the next 48 hours
    East to northeasterly winds of force 6 to 7.

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

    Waglan Island Wind northeast force 3
      Visibility 15 Kilometres

    Shantou Wind north force 1
      Visibility 22 Kilometres

    Dongsha Wind northeast force 5
      Visibility 9 Kilometres in rain

    Huangmaozhou Wind northeast force 4

    Macau Wind north-northeast force 3
      Visibility 12 Kilometres

    Xisha Wind north-northeast force 1
      Visibility 13 Kilometres in showers

  • Explanation of Seas or Sea Waves
  • Explanation of Swells
  • Descriptive Terms of Wind Speeds
  • Visibility Readings in Hong Kong Waters
  • Map showing forecast areas
  • Tidal Information

    • WEATHER FORECAST FOR LOCAL AVIATION
    Traditional Chinese Simplified Chinese

    Weather Forecast for Local Aviation

    Bulletin issued at 09:30 HKT 01/APR/2017
    (Next update at 17:30 HKT 01/APR/2017)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     STRONG WINDS AND SEV TURB.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     THE NORTHEAST MONSOON IS AFFECTING THE COASTAL
     AREAS OF GUANGDONG.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1000 TO 2000 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  040/10-15
       OFFSHORE:  040/15-20, OCNL 25 AT FIRST          17-23
   B.   2000 FT:  060/15-20, OCNL 25 AT FIRST          12
   C.   5000 FT:  020/10-15                            10
   D.  10000 FT:  350/15                               6
   E.  18000 FT:  300/40                               MS8
   F.  24000 FT:  270/55                               MS19
   G.  30000 FT:  250/80                               MS30
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      3400-4100 FT
   I. WEATHER       : 
      FINE.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 3000 FT
   K. VISIBILITY    : 10 KM.
   L. 0 DEG. C LEVEL: 14500 FT      10 DEG. C LEVEL(S) : 5000 FT
   M. TURBULENCE    : OCNL MOD TO SEV
   N. SEA STATE     : 2.0-2.5 M     SEA TEMPERATURE    : 19 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE TO FRESH NORTHEASTERLY WINDS. FINE.=

    ===================================================================
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 09:55 HKT on 01 Apr 17

    VHHK SIGMET 1 VALID 010200/010600 VHHH- VHHK HONG KONG FIR EMBD TS FCST S OF N1730 TOP FL380 MOV ESE 10KT WKN= VHHK SIGMET 7 VALID 312200/010200 VHHH- VHHK HONG KONG FIR EMBD TS FCST SE OF LINE N1742 E11306 - N1830 E11524 TOP FL380 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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    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 04:00 HKT 01/Apr/2017 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     23.7 C
Minimum Air Temperature                     15.5 C
Grass Minimum Temperature                   16.2 C
Relative Humidity                        79 - 97 Percent
Rainfall                                    21.9 mm 
Total rainfall since 1st January            75.7 mm
Against an average of                      161.3 mm

Other Stations                Min                  Max
King's Park                  15.4 C               23.9 C
Wong Chuk Hang               16.0 C               23.7 C
Ta Kwu Ling                  14.5 C               23.0 C
Lau Fau Shan                 14.6 C               23.5 C
Tai Po                       14.9 C               21.7 C
Sha Tin                      15.7 C               22.3 C
Tuen Mun                     15.3 C               23.9 C
Tseung Kwan O                14.6 C               22.5 C
Sai Kung                     15.3 C               21.6 C
Cheung Chau                  14.5 C               23.0 C
Chek Lap Kok                 16.1 C               25.4 C
Tsing Yi                     15.8 C               24.2 C
Shek Kong                    14.7 C               24.3 C
Tsuen Wan Ho Koon            14.2 C               22.7 C
Tsuen Wan Shing Mun Valley   15.4 C               23.9 C
Hong Kong Park               15.3 C               24.0 C
Shau Kei Wan                 15.5 C               22.3 C
Kowloon City                 14.7 C               24.0 C
Happy Valley                 16.5 C               24.9 C
Wong Tai Sin                 15.2 C               23.8 C
Stanley                      15.8 C               22.7 C
Kwun Tong                    15.3 C               23.9 C
Sham Shui Po                 15.6 C               25.0 C
Yuen Long Park               15.0 C               24.6 C
Tai Mei Tuk               14.4 C               22.4 C

Duration of sunshine (King's Park):              0.7 H
The mean UV index recorded at King's Park yesterday was 0.6,
the UV intensity was Low.
The maximum UV index for yesterday was 1.
Sea surface temperature (Waglan Island):        19.0 C 

Yesterday's (31 Mar 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                          0.10
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 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 31 Mar
     2003copy right image | Important notices | Privacy policy Last revision date: <01 Apr 2017> 

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