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// Station · 25m ago

KGEY

South Big Horn County Airport
CAT VFR
WIND CALM
VIS 10+ SM
CEILING Few/scattered only
T/Td 25°C / 11.1°C
ALTIM 29.99 inHg
ELEV 3,939 FT
44.5168°N / 108.0830°W
LOCATION · Greybull, US
N
WIND
000°0 kt
KGEY · 3,939 FT
© OSM · CartoDB

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

METRIC
NOW · 00Z
+6H
+12H
+18H
WIND
CALM
 
 
 
VIS
10+ SM
 
 
 
CEILING
 
 
 
LAYERS
SCT120
 
 
 
T / Td
25 / 11
 
 
 
ALTIM
29.99"
 
 
 

// Interpretation

VFR with winds calm. Visibility better than 10 statute miles and scattered at 12,000 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 KGEY 290053Z AUTO 00000KT 10SM SCT120 25/11 A2999 RMK AO2 SLP117 T02500111 $

KGEY · day 29 at 00:53 UTC · winds calm · visibility 10+ SM · scattered layer at 12,000 ft · temp 25°C / dewpoint 11°C · altimeter 29.99" Hg · automated station w/ precipitation discriminator · sea-level pressure 1011.7 mb

// Runway analysis · computed from current METAR wind

Wind CALM
ALL USABLE · WINDS CALM
N
WIND
000°calm
HEADWIND CAUTION · HIGH XW AVOID · TAILWIND
ALL RUNWAYS · CALM WINDS 4 ends
16 HDG 160° CALM 7,003'
34 HDG 340° CALM 7,003'
8 HDG 080° CALM 6,953'
26 HDG 260° CALM 6,953'
Pattern altitude: 4,939 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 +18°C

6,000FT
+2,061 FT ABOVE FIELD ELEV
// DA · LAST 24 HOURS loading…
FIELD ELEV3,939 FT OAT+25°C ISA DELTA+18°C PRESSURE ALT3,865 FT
// Performance equivalent Operating here right now feels like operating at KCYS (Cheyenne Regional Jerry Olson Field, Cheyenne, elev 6,159 ft) on a standard ISA day.
// Aircraft performance impact SIGNIFICANT
TAKEOFF ROLL CLIMB RATE
Single-engine propC172, PA-28, Cherokee
+60%
-42%
Turbo / high-perf pistonSR22T, Bonanza, Mooney
+42%
-27%
Light jetCJ4, Phenom 300, M2
+24%
-18%

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 · 1 reported · highest to lowest

FT 0 5k 10k 15k 20k 25k FRZ LVL · 16,565 FT SCT120 KGEY ELEV · 3,939 FT
// Reported layers (highest → lowest)
SCT120
Scattered · base 12,000 ft AGL · ~3–4 oktas
// Computed
CEILING HIGHEST LAYER12,000 ft TOTAL COVERAGE~40% (mixed) FREEZING LEVEL16,565 ft VFR MARGINunlimited

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

12:31ZSUNRISE
19:15ZSOLAR NOON
01:58ZSUNSET
02:28ZCIVIL END
CURRENT01:18Z DAYLIGHT REMAINING39m VFR NIGHT BEGINS02:28Z (1h 10m) DAY LENGTH13h 26m
Waning Gibbous
ILLUMINATION99% MOONRISE01:18Z MOONSET14:45Z FULL MOON IN29 days

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

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