South China Coastal Waters

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Bulletin issued at 05:30 HKT 02/Jun/2018

Weather information for south China coastal waters issued by the Hong Kong Observatory at 5:30 a.m. on 02 June 2018

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

Weather Situation:
An easterly airstream is affecting the south China coastal waters.

Area forecasts for the next 24 hours

Hong Kong Adjacent Waters:
East force 5 to 6.
Isolated showers and thunderstorms.
Moderate to rough seas.

Nan'ao, Shanwei and South of Hong Kong:
East force 5 to 6.
Isolated showers and thunderstorms.
Moderate to rough seas.

Shangchuan Dao:
East force 4 to 5.
Isolated showers and thunderstorms.
Moderate seas.

Outlook for the next 48 hours
Easterly winds of force 5 to 6, becoming southeasterly winds of force 5 to 6 later, occasionally force 7. Isolated squally showers and thunderstorms later.

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

Waglan Island Wind east-northeast force 6
Visibility 18 Kilometres

Shantou Wind northeast force 2
Visibility 30 Kilometres

Huangmaozhou Wind east force 6

Macau Wind east force 3
Visibility 6 Kilometres

Xisha Wind east-northeast force 1
Visibility 30 Kilometres

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

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Last revision date: <02 Jun 2018>

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Weather Forecast for Local Aviation

Bulletin issued at 01:30 HKT 02/JUN/2018
(Next update at 9:00-9:30 HKT 02/JUN/2018)

I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     STRONG WINDS AND SEV TURB. 
     ISOL CUNIM/TS AND ASSOCIATED HAZARDS.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     AN EASTERLY AIRSTREAM IS AFFECTING THE SOUTH
     CHINA COASTAL AREAS.
     
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 0200 TO 1200 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  100/10-15
                  TEMPO VRB/15G25 IN TS
       OFFSHORE:  080/15-20, OCNL 25                   27-32
   B.   2000 FT:  090/20-25                            23
   C.   5000 FT:  120/10                               19
   D.  10000 FT:  150/10                               12
   E.  18000 FT:  160/5                                MS2
   F.  24000 FT:  010/5                                MS12
   G.  30000 FT:  040/10                               MS23
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL
   I. WEATHER       : 
      MAINLY CLOUDY.  A FEW SHOWERS AND ISOLATED
      THUNDERSTORMS.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1500 FT SCT 3000 FT. TEMPO FEW CB 800 FT
      SCT 1200 FT BKN 5000 FT.
   K. VISIBILITY    : 10 KM. TEMPO 4000 M IN SHOWERS. TEMPO 2500 M IN TS
   L. 0 DEG. C LEVEL: 17000 FT      10 DEG. C LEVEL(S) : 11600 FT
   M. TURBULENCE    : MOD TO SEV
   N. SEA STATE     : 2.0-3.0 M     SEA TEMPERATURE    : 27 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE TO FRESH EASTERLY WINDS, OCCASIONALLY
     STRONG OFFSHORE.  SUNNY INTERVALS. A FEW SHOWERS
     AND ISOLATED  THUNDERSTORMS.=

===================================================================
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.

Last revision date: <02 Jun 2018>

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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 07:27 HKT on 02 Jun 18

VHHK SIGMET 5 VALID 012330/020330 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N1830 E11530 - N1812 E11436 - N1848 E11324 - N1918 E11324 - N1936 E11618 - N1830 E11530 TOP FL400 STNR NC=

Please click here for more about the SIGMET