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// Station · 16m ago

CYSP

Marathon Airport
CAT VFR
WIND 240° / 5 kt
VIS 10+ SM
CEILING Few/scattered only
T/Td 18°C / 10°C
ALTIM 30.05 inHg
ELEV 1,035 FT
48.7553°N / 86.3444°W
LOCATION · Marathon, CA
N
WIND
240°5 kt
CYSP · 1,035 FT
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// Current + 24h forecast · METAR loaded · TAF loading…

METRIC
NOW · 16Z
+6H
+12H
+18H
WIND
240°/5
 
 
 
VIS
10+ SM
 
 
 
CEILING
 
 
 
LAYERS
FEW200 SCT240
 
 
 
T / Td
18 / 10
 
 
 
ALTIM
30.05"
 
 
 

// Interpretation

VFR with light winds at 240°/5 kt. Visibility better than 10 statute miles and a few at 20,000 ft, and scattered at 24,000 ft. Would shift to MVFR if the ceiling drops to 3,000 ft or visibility below 5 SM.

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

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// Raw observation METAR string + decoded

METAR CYSP 251600Z 24005KT 130V300 15SM FEW200 SCT240 18/10 A3005 RMK CC1CI2 SLP183 DENSITY ALT 1500FT

CYSP · day 25 at 16:00 UTC · wind from 240° at 5 kt · visibility 10+ SM · a few clouds at 20,000 ft · scattered layer at 24,000 ft · temp 18°C / dewpoint 10°C · altimeter 30.05" Hg · sea-level pressure 1018.3 mb

// Runway analysis · computed from current METAR wind

Wind 240° @ 5 kt
1 USABLE · 1 AVOID
N
WIND
240°5 kt
HEADWIND CAUTION · HIGH XW AVOID · TAILWIND
HEADWIND ENDS 1 usable
16 HDG 160° H1 kt X5 kt RIGHT PRIMARY · 3,933'
TAILWIND ENDS · AVOID 1 ends
34 HDG 340° T1 kt X5 kt LEFT
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 +5°C

1,500FT
+465 FT ABOVE FIELD ELEV
// DA · LAST 24 HOURS loading…
FIELD ELEV1,035 FT OAT+18°C ISA DELTA+5°C PRESSURE ALT902 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
+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 · 2 reported · highest to lowest

FT 0 5k 10k 15k 20k 25k FRZ LVL · 10,126 FT FEW200 SCT240 CYSP ELEV · 1,035 FT
// Reported layers (highest → lowest)
SCT240
Scattered · base 24,000 ft AGL · ~3–4 oktas
FEW200
Few · base 20,000 ft AGL · ~1–2 oktas
// Computed
CEILING HIGHEST LAYER24,000 ft TOTAL COVERAGE~48% (mixed) FREEZING LEVEL10,126 ft VFR MARGINunlimited

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

10:53ZSUNRISE
17:48ZSOLAR NOON
00:44ZSUNSET
01:17ZCIVIL END
CURRENT16:16Z DAYLIGHT REMAINING8h 27m VFR NIGHT BEGINS01:17Z (9h 01m) DAY LENGTH13h 50m
Waxing Gibbous
ILLUMINATION94% MOONRISE20:56Z MOONSET10:46Z FULL MOON IN2 days

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