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Marine Forecast

Weather Information for the Marine Community

Bulletin issued at 21:00 HKT 27/Apr/2018

N0 WARNING.

GENERAL SITUATION AT 270900 UTC:
AN EASTERLY AIRSTREAM IS AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 271300 UTC:

HONG KONG= E 4-5, OCNL 6. CLD. SEA UP TO 3 M. TEMP 23-27 C. =
KWANGTUNG= E 4-5, OCNL 6. DOWN TO 4000 M IN MIST OR RAIN PATCHES. SEA UP TO 3 M. SWELL NE UP TO 2 M. =
TAIWAN STRAIT= NE 5-6. ISOL SHOWERS. SEA 2-3 M. SWELL NE UP TO 2 M. =
BASHI= E TO NE 5-6. ISOL SHOWERS. SEA 2-3 M. SWELL E TO NE UP TO 2 M. =
PRATAS= E 4-5, OCNL 6. ISOL SHOWERS. SEA UP TO 3 M. SWELL E TO NE UP TO 2 M. =
BALINTANG= E TO NE 5-6. ISOL SHOWERS. SEA 2-3 M. SWELL E TO NE UP TO 2 M. =
SCARBOROUGH= E TO NE 4-5. ISOL SHOWERS AND TS. SEA UP TO 2 M. SWELL E TO NE UP TO 2 M. =
PARACEL= E 4-5. ISOL SHOWERS AND TS. SEA UP TO 2 M. =
TONKIN= E TO NE 4-5. DOWN TO 4000 M IN MIST PATCHES IN N. ISOL SHOWERS AND TS. SEA UP TO 2 M. =
DANANG= E 4-5. ISOL SHOWERS AND TS. 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.



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 17:47 HKT on 26 Apr 18

VHHK SIGMET 2 VALID 260555/260955 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N1948 E11254 - N1906 E11148 - N1930 E11130 - N2130 E11130 - N2212 E11312 - N1948 E11254 TOP FL380 MOV ENE 10KT NC= VHHK SIGMET 3 VALID 260955/261355 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N1954 E11242 - N1918 E11142 - N1930 E11130 - N2130 E11130 - N2206 E11306 - N2212 E11324 - N1954 E11242 TOP FL380 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: <06 Apr 2018> 

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 28/Apr/2018
HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     28.5 C
Minimum Air Temperature                     22.9 C
Grass Minimum Temperature                   21.9 C
Relative Humidity                        68 - 87 Percent
Rainfall                                      Trace 
Total rainfall since 1st January           117.4 mm
Against an average of                      318.9 mm

Other Stations                Min                  Max
King's Park                  22.3 C               28.4 C
Wong Chuk Hang               22.4 C               28.2 C
Ta Kwu Ling                  21.6 C               27.9 C
Lau Fau Shan                 21.1 C               27.4 C
Sha Tin                      22.7 C               27.1 C
Tuen Mun                     22.3 C               28.0 C
Tseung Kwan O                21.6 C               27.7 C
Sai Kung                     22.5 C               27.4 C
Cheung Chau                  21.9 C               27.8 C
Chek Lap Kok                 23.4 C               28.4 C
Tsing Yi                     22.6 C               28.6 C
Shek Kong                    22.4 C               27.7 C
Tsuen Wan Ho Koon            21.3 C               26.6 C
Tsuen Wan Shing Mun Valley   22.1 C               27.6 C
Hong Kong Park               22.2 C               27.8 C
Shau Kei Wan                 22.1 C               27.0 C
Kowloon City                 22.2 C               27.4 C
Happy Valley                 22.7 C               28.9 C
Wong Tai Sin                 22.5 C               27.6 C
Stanley                      22.5 C               27.5 C
Kwun Tong                    22.2 C               27.6 C
Sham Shui Po                 22.8 C               29.0 C
Kai Tak Runway Park          22.4 C               26.8 C
Yuen Long Park               22.5 C               27.7 C
Tai Mei Tuk               21.8 C               27.3 C

Duration of sunshine (King's Park):              1.7 H
The mean UV index recorded at King's Park yesterday was 3,
the UV intensity was Moderate.
The maximum UV index for yesterday was 8.
Sea surface temperature (Waglan Island):        23.3 C 

Yesterday's (27 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                               0.10
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                         0.15
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 27 Apr
Last revision date: <28 Apr 2018> 

From Weather Underground