// Station · 13m ago

KGEY

South Big Horn County Airport

CAT VFR

WIND VRB / 3 kt

VIS 10+ SM

CEILING Few/scattered only

T/Td 21.1°C / 11.7°C

ALTIM 29.78 inHg

ELEV 3,939 FT

44.5168°N / 108.0830°W

LOCATION · Greybull, US

WIND

VRB3 kt

KGEY · 3,939 FT

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

METRIC

NOW · 20Z

+6H

+12H

+18H

WIND

VRB/3

VIS

10+ SM

CEILING

—

LAYERS

FEW039

T / Td

21 / 12

ALTIM

29.78"

// Interpretation

VFR with light winds at variable/3 kt. Visibility better than 10 statute miles and a few at 3,900 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 KGEY 302053Z AUTO VRB03KT 10SM FEW039 21/12 A2978 RMK AO2 SLP049 60001 T02110117 58015

KGEY · day 30 at 20:53 UTC · wind variable at 3 kt · visibility 10+ SM · a few clouds at 3,900 ft · temp 21°C / dewpoint 12°C · altimeter 29.78" Hg · automated station w/ precipitation discriminator · sea-level pressure 1004.9 mb

// Runway analysis · computed from current METAR wind

Wind VRB @ 3 kt

ALL USABLE · WINDS CALM

WIND

VRB3 kt

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 +14°C

5,800FT

+1,861 FT ABOVE FIELD ELEV

// DA · LAST 24 HOURS ↘ -1,400 FT

24h AGO18h12h6hNOW

FIELD ELEV3,939 FT OAT+21°C ISA DELTA+14°C PRESSURE ALT4,078 FT

// Performance equivalent Operating here right now feels like operating at K46U (Alpine Airport, Alpine, elev 5,634 ft) on a standard ISA day.

// Aircraft performance impact SIGNIFICANT

TAKEOFF ROLL CLIMB RATE

Single-engine propC172, PA-28, Cherokee

+58%

-41%

Turbo / high-perf pistonSR22T, Bonanza, Mooney

+41%

-26%

Light jetCJ4, Phenom 300, M2

+23%

-17%

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.

// Cloud layers · 1 reported · highest to lowest

// Reported layers (highest → lowest)

FEW039

Few · base 3,900 ft AGL · ~1–2 oktas

// Computed

CEILING— HIGHEST LAYER3,900 ft TOTAL COVERAGE~15% (sparse) FREEZING LEVEL14,596 ft VFR MARGINunlimited

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

11:33ZSUNRISE

19:11ZSOLAR NOON

02:49ZSUNSET

03:25ZCIVIL END

CURRENT21:06Z DAYLIGHT REMAINING5h 43m VFR NIGHT BEGINS03:25Z (6h 18m) DAY LENGTH15h 16m

Full Moon

ILLUMINATION100% MOONRISE23:03Z MOONSET14:19Z FULL MOON IN1 day

// Nearest reporting stations · 5 shown · 60 NM radius

KU68

VFR

North Big Horn County Airport · Cowley

WIND: CALM
VIS: 10+ SM
CEILING: BKN070
DIST: 28 NM NW
AGE: 11m ago

KWRL

VFR → MVFR 11Z

Worland Municipal Airport · Worland

WIND: CALM
VIS: 10+ SM
CEILING: BKN110
DIST: 34 NM S
AGE: 13m ago

KPOY

VFR

Powell Municipal Airport · Powell

WIND: 100° / 6 kt
VIS: 10+ SM
CEILING: SCT023
DIST: 37 NM NW
AGE: 11m ago

KCOD

VFR → MVFR 06Z

Yellowstone Regional Airport · Cody

WIND: 050° / 5 kt
VIS: 10+ SM
CEILING: OVC060
DIST: 40 NM W
AGE: 10m ago

KSHR

VFR → MVFR 03Z

Sheridan County Airport · Sheridan

WIND: CALM
VIS: 10+ SM
CEILING: OVC055
DIST: 49 NM E
AGE: 13m ago

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

AIRSPACE

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