// Station · 3h 40m ago · STALE

CYSP

Marathon Airport

CAT VFR

WIND VRB / 2 kt

VIS 10+ SM

CEILING Few/scattered only

T/Td 19°C / 14°C

ALTIM 29.84 inHg

ELEV 1,035 FT

48.7553°N / 86.3444°W

LOCATION · Marathon, CA

WIND

VRB2 kt

CYSP · 1,035 FT

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

METRIC

NOW · 21Z

+6H

+12H

+18H

WIND

VRB/2

VIS

10+ SM

CEILING

—

LAYERS

FEW022 SCT120

T / Td

19 / 14

ALTIM

29.84"

// Interpretation

VFR with light winds at variable/2 kt. Visibility better than 10 statute miles and a few at 2,200 ft, and scattered at 12,000 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 CYSP 122100Z VRB02KT 15SM FEW022TCU SCT120 19/14 A2984 RMK TCU1AC3 LAST STFD OBS/NEXT 131200Z SLP111 DENSITY ALT 1900FT

CYSP · day 12 at 21:00 UTC · wind variable at 2 kt · visibility 10+ SM · a few clouds at 2,200 ft · scattered layer at 12,000 ft · temp 19°C / dewpoint 14°C · altimeter 29.84" Hg · sea-level pressure 1011.1 mb

// Runway analysis · computed from current METAR wind

Wind VRB @ 2 kt

ALL USABLE · WINDS CALM

WIND

VRB2 kt

HEADWIND CAUTION · HIGH XW AVOID · TAILWIND

ALL RUNWAYS · CALM WINDS 2 ends

16 HDG 160° —CALM —— 3,933'

34 HDG 340° —CALM —— 3,933'

Pattern altitude: 2,035 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 +6°C

1,900FT

+865 FT ABOVE FIELD ELEV

// DA · LAST 24 HOURS ↗ +700 FT

24h AGO18h12h6hNOW

FIELD ELEV1,035 FT OAT+19°C ISA DELTA+6°C PRESSURE ALT1,112 FT

// Performance equivalent Operating here right now feels like operating at CYLD (Chapleau Airport, Chapleau, elev 1,470 ft) on a standard ISA day.

// Aircraft performance impact MINOR

TAKEOFF ROLL CLIMB RATE

Single-engine propC172, PA-28, Cherokee

+19%

-13%

Turbo / high-perf pistonSR22T, Bonanza, Mooney

+13%

-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)

SCT120

Scattered · base 12,000 ft AGL · ~3–4 oktas

FEW022

Few · base 2,200 ft AGL · ~1–2 oktas

// Computed

CEILING— HIGHEST LAYER12,000 ft TOTAL COVERAGE~48% (mixed) FREEZING LEVEL10,631 ft VFR MARGINunlimited

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

10:35ZSUNRISE

17:51ZSOLAR NOON

01:08ZSUNSET

01:43ZCIVIL END

CURRENT00:40Z DAYLIGHT REMAINING27m VFR NIGHT BEGINS01:43Z (1h 02m) DAY LENGTH14h 32m

New Moon

ILLUMINATION0% MOONRISE10:20Z MOONSET00:53Z FULL MOON IN15 days

// Nearest reporting stations

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

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