// Station · 1d ago · STALE · HARD STALE

KMRF

Marfa Municipal Airport

CAT VFR

WIND 070° / 8 kt

VIS 10+ SM

CEILING CLR

T/Td 31.1°C / 11.1°C

ALTIM 30.18 inHg

ELEV 4,849 FT

30.3696°N / 104.0159°W

LOCATION · Marfa, US

WIND

070°8 kt

KMRF · 4,849 FT

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

METRIC

NOW · 23Z

+6H

+12H

+18H

WIND

070°/8

VIS

10+ SM

CEILING

CLR

LAYERS

—

T / Td

31 / 11

ALTIM

30.18"

// Interpretation

VFR with moderate winds at 070°/8 kt. Visibility better than 10 statute miles and no reported cloud layers. 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 KMRF 272301Z AUTO 07008KT 10SM CLR 31/11 A3018 RMK AO2 SLP140 T03110111 PNO $

KMRF · day 27 at 23:01 UTC · wind from 070° at 8 kt · visibility 10+ SM · temp 31°C / dewpoint 11°C · altimeter 30.18" Hg · automated station w/ precipitation discriminator · sea-level pressure 1014.0 mb

// Runway analysis · computed from current METAR wind

Wind 070° @ 8 kt

3 USABLE · 3 AVOID · 1 CAUTION

WIND

070°8 kt

HEADWIND CAUTION · HIGH XW AVOID · TAILWIND

HEADWIND ENDS 3 usable

09★ HDG 090° H8 kt X3 kt LEFT PRIMARY · 2,825'

04 HDG 040° H7 kt X4 kt RIGHT 5,309'

13 HDG 130° H4 kt X7 kt LEFT ⚠ HIGH XW · 88%

TAILWIND ENDS · AVOID 3 ends

31 HDG 310° T4 kt X7 kt RIGHT —

22 HDG 220° T7 kt X4 kt LEFT —

27 HDG 270° T8 kt X3 kt RIGHT —

Pattern altitude: 5,849 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 +25°C

7,600FT

+2,751 FT ABOVE FIELD ELEV

// DA · LAST 24 HOURS loading…

FIELD ELEV4,849 FT OAT+31°C ISA DELTA+25°C PRESSURE ALT4,586 FT

// Performance equivalent Operating here right now feels like operating at KMVI (Monte Vista Municipal Airport, Monte Vista, elev 7,611 ft) on a standard ISA day.

// Aircraft performance impact DANGEROUS

TAKEOFF ROLL CLIMB RATE

Single-engine propC172, PA-28, Cherokee

+76%

-53%

Turbo / high-perf pistonSR22T, Bonanza, Mooney

+53%

-34%

Light jetCJ4, Phenom 300, M2

+30%

-23%

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 · clear · no layers reported

// Reported layers (highest → lowest)

CLR

No reported cloud layers — clear sky from surface to reporting ceiling.

// Computed

CEILING— HIGHEST LAYER— TOTAL COVERAGEclear FREEZING LEVEL20,556 ft VFR MARGINunlimited

// Sun & Moon · times in Z · bar = local day (UTC-7)

12:31ZSUNRISE

18:58ZSOLAR NOON

01:25ZSUNSET

01:50ZCIVIL END

CURRENT01:17Z DAYLIGHT REMAINING8m VFR NIGHT BEGINS01:50Z (32m) DAY LENGTH12h 53m

Waning Gibbous

ILLUMINATION99% MOONRISE01:19Z MOONSET14:12Z FULL MOON IN29 days

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

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