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Bulletin issued at 10:02 HKT 08/Apr/2018

At 10 a.m. at the Hong Kong Observatory the air temperature was 20 degrees Celsius and the relative humidity 55 per cent.
During the past hour the mean UV Index recorded at King's Park was 4. The intensity of UV radiation was moderate.

Please be reminded that:

The Fire Danger Warning is Red and the fire risk is extreme.

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 21 degrees;
Sha Tin 21 degrees;
Tuen Mun 21 degrees;
Tseung Kwan O 21 degrees;
Sai Kung 21 degrees;
Cheung Chau 22 degrees;
Chek Lap Kok 21 degrees;
Tsing Yi 21 degrees;
Shek Kong 22 degrees;
Tsuen Wan Ho Koon 19 degrees;
Tsuen Wan Shing Mun Valley 22 degrees;
Hong Kong Park 21 degrees;
Shau Kei Wan 23 degrees;
Kowloon City 22 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 21 degrees;
Tai Mei Tuk 23 degrees.


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


Climatological Information for 8 Apr

Regional Weather in Hong Kong

Information on Tropical Cyclones

Hong Kong Climatology


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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 09:45 HKT 08/Apr/2018

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

A dry northeast monsoon is affecting Guangdong.

Weather forecast for today

Fine and very dry. Moderate northeasterly winds.

Outlook : Mainly fine and temperatures rising gradually in the next couple of days.


(The above forecast period is valid up to 23:59 HKT today, 08/04/2018; Regular update at : around 45 minutes past each hour, 16:15 HKT and 23:15 HKT)

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MARINE FORECAST
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Marine Forecast

Weather Information for the Marine Community

Bulletin issued at 09:00 HKT 08/Apr/2018

GALE WARNING AREAS: BASHI, PRATAS, BALINTANG, SCARBOROUGH AND PARACEL.

GENERAL SITUATION AT 072100 UTC:
AN INTENSE NORTHEAST MONSOON IS AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 080100 UTC:

HONG KONG= NE 5-6, OCNL 7. FINE. SEA UP TO 4 M. SWELL N TO NE 2-3 M. TEMP 23-19 C. =
KWANGTUNG= NE 6-7. FINE. SEA 3-4 M. SWELL N TO NE 3-5 M. =
TAIWAN STRAIT= NE 6-7. FINE. SEA 3-4 M. SWELL N TO NE 3-5 M. =
BASHI= NE 6-7, OCNL 8. ISOL SHOWERS. SEA UP TO 6 M. SWELL N TO NE 3-5 M. =
PRATAS= NE 6-7, OCNL 8. ISOL SHOWERS. SEA UP TO 6 M. SWELL N TO NE 3-5 M. =
BALINTANG= NE 7-8. ISOL SHOWERS. SEA 4-6 M. SWELL N TO NE 3-5 M. =
SCARBOROUGH= NE 7-8. ISOL SHOWERS. SEA 4-6 M. SWELL N TO NE 3-5 M. =
PARACEL= NE 7-8. ISOL SHOWERS. SEA 4-6 M. SWELL N TO NE 3-5 M. =
TONKIN= NE 5-6, OCNL 7. FINE. SEA UP TO 4 M. SWELL N TO NE 3 M. =
DANANG= NE 6-7. LGT RAIN PATCHES. SEA 3-4 M. SWELL N TO NE 3-5 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

    • WEATHER FORECAST FOR LOCAL AVIATION
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    Weather Forecast for Local Aviation

    Bulletin issued at 09:00 HKT 08/APR/2018
    (Next update at 12:30 HKT 08/APR/2018)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     NIL.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     THE NORTHEAST MONSOON IS AFFECTING GUANGDONG.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1000 TO 2000 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  040/5-10
       OFFSHORE:  040/15                               19-24
   B.   2000 FT:  100/10-15                            16
   C.   5000 FT:  120/10                               11
   D.  10000 FT:  300/10                               6
   E.  18000 FT:  270/35                               MS8
   F.  24000 FT:  260/55                               MS18
   G.  30000 FT:  260/60                               MS32
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      3800 - 4700 FT.
   I. WEATHER       : 
      FINE.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 4000 FT.
   K. VISIBILITY    : 10 KM.
   L. 0 DEG. C LEVEL: 13000 FT
      10 DEG. C LEVEL(S) : 4000, 5600, 8000 FT
   M. TURBULENCE    : MOD OFFSHORE.
   N. SEA STATE     : 1.5-2.0 M     SEA TEMPERATURE    : 22 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE EAST TO 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 14:15 HKT on 07 Apr 18

    VHHK SIGMET 1 VALID 070615/071015 VHHH- VHHK HONG KONG FIR SEV ICE OBS N OF N2030 AND E OF E11230 FL140/200 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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    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 08/Apr/2018 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     20.3 C
Minimum Air Temperature                     16.1 C
Grass Minimum Temperature                   15.8 C
Relative Humidity                        35 - 60 Percent
Rainfall                                      Trace 
Total rainfall since 1st January            89.4 mm
Against an average of                      201.5 mm

Other Stations                Min                  Max
King's Park                  14.9 C               19.8 C
Wong Chuk Hang               15.8 C               19.7 C
Ta Kwu Ling                  14.1 C               20.2 C
Lau Fau Shan                 14.1 C               19.6 C
Tai Po                       15.9 C               19.6 C
Sha Tin                      15.0 C               19.9 C
Tuen Mun                     14.7 C               19.9 C
Tseung Kwan O                14.6 C               19.5 C
Sai Kung                     14.5 C               19.4 C
Cheung Chau                  15.8 C               19.7 C
Chek Lap Kok                 15.6 C               21.3 C
Tsing Yi                     16.2 C               20.1 C
Shek Kong                    14.8 C               20.6 C
Tsuen Wan Ho Koon            14.2 C               18.6 C
Tsuen Wan Shing Mun Valley   15.6 C               19.5 C
Hong Kong Park               15.9 C               19.7 C
Shau Kei Wan                 14.6 C               20.4 C
Kowloon City                 14.1 C               19.7 C
Happy Valley                 16.1 C               20.3 C
Wong Tai Sin                 14.7 C               19.8 C
Stanley                      15.2 C               19.5 C
Kwun Tong                    14.3 C               19.5 C
Sham Shui Po                 15.7 C               20.1 C
Kai Tak Runway Park          15.7 C               20.2 C
Yuen Long Park               14.7 C               19.9 C
Tai Mei Tuk               14.2 C               19.5 C

Duration of sunshine (King's Park):              0.5 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 3.
Sea surface temperature (Waglan Island):        21.9 C 

Yesterday's (07 Apr 2018) 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                               0.11
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                         0.15
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 in the
past, the hourly mean ambient gamma radiation dose rate may
vary between 0.06 and 0.3 microsievert per hour. (1
microsievert = 0.000001 sievert = 0.001 millisievert)

    2. Temporal variations are generally caused by changes in
meteorological conditions such as rainfall, wind and
barometric pressure.

    3. Spatial variations are generally caused by differences in
the radioactive content of local rock and soil.

    4. The data displayed is provisional. Only limited data
validation has been carried out.
    Climatological Information for 07 Apr
     2003copy right image | Important notices | Privacy policy Last revision date: <08 Apr 2018> 

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