// Station · 25m ago

VHHH

Hong Kong International Airport

CAT VFR

WIND VRB / 3 kt

VIS 6+ SM

CEILING Few/scattered only

T/Td 30°C / 26°C

ALTIM 29.59 inHg

ELEV 28 FT

22.3118°N / 113.9149°E

LOCATION · Hong Kong, HK

WIND

VRB3 kt

VHHH · 28 FT

// Current + 24h forecast · METAR loaded · TAF loading…

METRIC

NOW · 20Z

+6H

+12H

+18H

WIND

VRB/3

VIS

6+ SM

CEILING

—

LAYERS

FEW012

T / Td

30 / 26

ALTIM

29.59"

// Interpretation

VFR with light winds at variable/3 kt. Visibility 6+ SM and a few at 1,200 ft. Would shift to MVFR if the ceiling drops to 3,000 ft or visibility below 5 SM.

Loading TAF forecast narrative…

SOURCES · NOAA Aviation Weather Center METAR (TAF loading…)

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// Raw observation METAR string + decoded

METAR VHHH 252000Z VRB03KT 9999 FEW012 30/26 Q1002 NOSIG

VHHH · day 25 at 20:00 UTC · wind variable at 3 kt · visibility 6+ SM · a few clouds at 1,200 ft · temp 30°C / dewpoint 26°C · altimeter 29.59" Hg

// Runway analysis · computed from current METAR wind

Wind VRB @ 3 kt

ALL USABLE · WINDS CALM

WIND

VRB3 kt

HEADWIND CAUTION · HIGH XW AVOID · TAILWIND

ALL RUNWAYS · CALM WINDS 6 ends

07C HDG 070° —CALM —— 12,467'

25C HDG 250° —CALM —— 12,467'

07L HDG 070° —CALM —— 12,467'

25R HDG 250° —CALM —— 12,467'

07R HDG 070° —CALM —— 12,467'

25L HDG 250° —CALM —— 12,467'

Pattern altitude: 1,028 ft MSL (1,000 ft AGL). Verify pattern direction and altitude with the chart supplement before flying. // On calm winds (<3 kt), all runways are usable — favor the longest or whatever the pattern calls for.

// Density altitude · ISA +16°C

2,200FT

+2,172 FT ABOVE FIELD ELEV

// DA · LAST 24 HOURS loading…

FIELD ELEV28 FT OAT+30°C ISA DELTA+16°C PRESSURE ALT359 FT

// Performance equivalent Your aircraft will perform as if it's at a field 2,200 ft high on a standard ISA day — that's +2,172 ft above VHHH's actual elevation.

// Aircraft performance impact SIGNIFICANT

TAKEOFF ROLL CLIMB RATE

Single-engine propC172, PA-28, Cherokee

+22%

-15%

Turbo / high-perf pistonSR22T, Bonanza, Mooney

+15%

-10%

Light jetCJ4, Phenom 300, M2

+9%

-7%

Approximate using ~10% perf loss / 1,000 ft DA for normally aspirated, scaled by powerplant type. Verify with your aircraft's POH for accurate numbers — especially above 5,000 ft DA where these rules of thumb diverge. Severity rating assumes a standard altimeter setting (29.92" Hg / 1013 hPa); a non-standard setting shifts the effective altitude by roughly 1,000 ft per 1" Hg of deviation.

// Cloud layers · 1 reported · highest to lowest

// Reported layers (highest → lowest)

FEW012

Few · base 1,200 ft AGL · ~1–2 oktas

// Computed

CEILING— HIGHEST LAYER1,200 ft TOTAL COVERAGE~15% (sparse) FREEZING LEVEL15,180 ft VFR MARGINunlimited

// Sun & Moon · times in Z · bar = local day (UTC+8)

22:06ZSUNRISE

04:27ZSOLAR NOON

10:49ZSUNSET

11:12ZCIVIL END

CURRENT20:25Z DAYLIGHT REMAINING14h 23m VFR NIGHT BEGINS11:12Z (14h 46m) DAY LENGTH12h 42m

Waxing Gibbous

ILLUMINATION94% MOONRISE08:17Z MOONSET20:59Z FULL MOON IN2 days

// Nearest reporting stations

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// Area map · 60 NM radius · CartoDB Dark Matter + aeronautical overlay

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