// Station · 11m ago

KGCY

Greeneville Municipal Airport

CAT VFR

WIND CALM

VIS 10+ SM

CEILING OVC at 3,500 ft

T/Td 17°C / 15°C

ALTIM 30.07 inHg

ELEV 1,608 FT

36.1957°N / 82.8115°W

LOCATION · Greeneville, US

WIND

000°0 kt

KGCY · 1,608 FT

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

METRIC

NOW · 00Z

+6H

+12H

+18H

WIND

CALM

VIS

10+ SM

CEILING

OVC035

LAYERS

FEW025 OVC035

T / Td

17 / 15

ALTIM

30.07"

// Interpretation

VFR — ceiling 3,500 ft. Winds calm, visibility better than 10 statute miles, a few at 2,500 ft, and overcast at 3,500 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 KGCY 130055Z AUTO 00000KT 10SM FEW025 OVC035 17/15 A3007 RMK A01

KGCY · day 13 at 00:55 UTC · winds calm · visibility 10+ SM · a few clouds at 2,500 ft · overcast at 3,500 ft · temp 17°C / dewpoint 15°C · altimeter 30.07" Hg

// Runway analysis · computed from current METAR wind

Wind CALM

ALL USABLE · WINDS CALM

WIND

000°calm

HEADWIND CAUTION · HIGH XW AVOID · TAILWIND

ALL RUNWAYS · CALM WINDS 2 ends

05 HDG 050° —CALM —— 6,300'

23 HDG 230° —CALM —— 6,300'

Pattern altitude: 2,608 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 +5°C

2,000FT

+392 FT ABOVE FIELD ELEV

// DA · LAST 24 HOURS loading…

FIELD ELEV1,608 FT OAT+17°C ISA DELTA+5°C PRESSURE ALT1,455 FT

// Performance equivalent Operating here right now feels like operating at KUOS (Franklin County Airport, Sewanee, elev 1,953 ft) on a standard ISA day.

// Aircraft performance impact MINOR

TAKEOFF ROLL CLIMB RATE

Single-engine propC172, PA-28, Cherokee

+20%

-14%

Turbo / high-perf pistonSR22T, Bonanza, Mooney

+14%

-9%

Light jetCJ4, Phenom 300, M2

+8%

-6%

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 · 2 reported · highest to lowest

// Reported layers (highest → lowest)

OVC035

Overcast · base 3,500 ft AGL · 8 oktas

FEW025

Few · base 2,500 ft AGL · ~1–2 oktas

// Computed

CEILING3,500 ft AGL HIGHEST LAYER3,500 ft TOTAL COVERAGE~100% (overcast) FREEZING LEVEL10,194 ft VFR MARGIN+500 ft

// Sun & Moon · times in Z · bar = local day (UTC-6)

11:36ZSUNRISE

17:18ZSOLAR NOON

23:01ZSUNSET

23:26ZCIVIL END

CURRENT01:06Z DAYLIGHT REMAINING0m VFR NIGHT BEGINS23:26Z (past) DAY LENGTH11h 24m

Waxing Crescent

ILLUMINATION3% MOONRISE12:57Z MOONSET00:22Z FULL MOON IN13 days

// Nearest reporting stations

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

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