Weather Forecast for Local Aviation
Bulletin issued at 09:30 HKT 17/SEP/2020
(Next update at 12:30 HKT 17/SEP/2020)
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 :
PRESSURE OVER CENTRAL CHINA IS RISING, THE
NORTHEAST MONSOON IS EXPECTED TO AFFECT THE
SOUTH CHINA COASTAL AREAS GRADUALLY TODAY.
AT 9 A.M., SEVERE TROPICAL STORM NOUL WAS
LOCATED AT 14.7 DEGREES NORTH, 114.1 DEGREES
EAST. IT IS FORECAST TO MOVE NORTHWEST OR
WEST-NORTHWEST AT ABOUT 12 KT ACROSS THE CENTRAL
PART OF THE SOUTH CHINA SEA AND INTENSIFY
GRADUALLY.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
FROM 1000 TO 2000 HKT:
WIND TEMPERATURE (DEG. C)
A. SURFACE: 090/10-15
TEMPO VRB/20G30 IN TS
OFFSHORE: 110/20-25 33-27
B. 2000 FT: 080/30-35 24
C. 5000 FT: 090/35 20
D. 10000 FT: 120/30 12
E. 18000 FT: 110/20 1
F. 24000 FT: 110/15 MS11
G. 30000 FT: 120/15 MS22
H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) :
NIL
I. WEATHER :
MAINLY CLOUDY WITH OCCASIONAL SHOWERS AND
SQUALLY THUNDERSTORMS.
J. CLOUD (HEIGHT ABOVE MSL) :
FEW 2000 FT SCT 3000 FT
TEMPO FEW CB 1000 FT SCT 2500 FT BKN 4000 FT
K. VISIBILITY : 10 KM, TEMPO 4000 M IN SHOWERS. TEMPO 2500 M IN TS
L. 0 DEG. C LEVEL: 18500 FT 10 DEG. C LEVEL(S) : 11600 FT
M. TURBULENCE : MOD TO SEV
N. SEA STATE : 3.0-4.0 M SEA TEMPERATURE : 27 DEG
IV. FURTHER OUTLOOK:
MODERATE TO FRESH EASTERLY WINDS, OCCASIONALLY
STRONG OFFSHORE AND ON HIGH GROUND.
CLOUDY WITH OCCASIONAL SHOWERS AND SQUALLY
THUNDERSTORMS.=
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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
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