// Station · 20d ago · STALE · HARD STALE

KM91

Springfield Robertson County Airport

CAT VFR

WIND 280° / 4 kt

VIS 6.0 SM

CEILING BKN at 3,900 ft

T/Td 22°C / 22°C

ALTIM 30.11 inHg

WX BR

ELEV 706 FT

36.5368°N / 86.9212°W

LOCATION · Springfield, US

WIND

280°4 kt

KM91 · 706 FT

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

METRIC

NOW · 20Z

+6H

+12H

+18H

WIND

280°/4

VIS

6.0 SM

CEILING

BKN039

LAYERS

FEW003 SCT034 BKN039

T / Td

22 / 22

ALTIM

30.11"

// Interpretation

VFR — ceiling 3,900 ft. Light winds at 280°/4 kt, visibility 6.0 SM, a few at 300 ft, scattered at 3,400 ft, and broken at 3,900 ft. Reported weather: mist (BR). Mist is water droplets thinning visibility to between 5/8 and 6 SM — the moist, lighter cousin of fog. 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 KM91 082055Z AUTO 28004KT 6SM BR FEW003 SCT034 BKN039 22/22 A3011 RMK A01 P0001

KM91 · day 8 at 20:55 UTC · wind from 280° at 4 kt · visibility 6.0 SM · a few clouds at 300 ft · scattered layer at 3,400 ft · broken layer at 3,900 ft · temp 22°C / dewpoint 22°C · altimeter 30.11" Hg · weather: mist (BR)

// Runway analysis · computed from current METAR wind

Wind 280° @ 4 kt

ALL USABLE · WINDS CALM

WIND

280°4 kt

HEADWIND CAUTION · HIGH XW AVOID · TAILWIND

ALL RUNWAYS · CALM WINDS 2 ends

04 HDG 040° —CALM —— 5,505'

22 HDG 220° —CALM —— 5,505'

Pattern altitude: 1,706 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 +8°C

1,500FT

+794 FT ABOVE FIELD ELEV

// DA · LAST 24 HOURS loading…

FIELD ELEV706 FT OAT+22°C ISA DELTA+8°C PRESSURE ALT514 FT

// Performance equivalent Operating here right now feels like operating at KTRI (Tri-Cities Regional TN/VA Airport, Blountville, elev 1,519 ft) on a standard ISA day.

// Aircraft performance impact MINOR

TAKEOFF ROLL CLIMB RATE

Single-engine propC172, PA-28, Cherokee

+15%

-11%

Turbo / high-perf pistonSR22T, Bonanza, Mooney

+11%

-7%

Light jetCJ4, Phenom 300, M2

+6%

-5%

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 · 3 reported · highest to lowest

// Reported layers (highest → lowest)

BKN039

Broken · base 3,900 ft AGL · ~5–7 oktas

SCT034

Scattered · base 3,400 ft AGL · ~3–4 oktas

FEW003

Few · base 300 ft AGL · ~1–2 oktas

// Computed

CEILING3,900 ft AGL HIGHEST LAYER3,900 ft TOTAL COVERAGE~91% (overcast) FREEZING LEVEL11,817 ft VFR MARGIN+900 ft

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

11:17ZSUNRISE

17:50ZSOLAR NOON

00:23ZSUNSET

00:50ZCIVIL END

CURRENT03:23Z DAYLIGHT REMAINING0m VFR NIGHT BEGINS00:50Z (past) DAY LENGTH13h 06m

Waning Gibbous

ILLUMINATION99% MOONRISE00:08Z MOONSET13:15Z FULL MOON IN28 days

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

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