// Station · 17m ago

KGNB

Granby Grand County Airport

CAT VFR

WIND 090° / 5 kt

VIS 10+ SM

CEILING Few/scattered only

T/Td 8.6°C / -1°C

ALTIM 30.04 inHg

ELEV 8,203 FT

40.0897°N / 105.9170°W

LOCATION · Granby, US

WIND

090°5 kt

KGNB · 8,203 FT

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

METRIC

NOW · 06Z

+6H

+12H

+18H

WIND

090°/5

VIS

10+ SM

CEILING

—

LAYERS

SCT110

T / Td

9 / -1

ALTIM

30.04"

// Interpretation

VFR with light winds at 090°/5 kt. Visibility better than 10 statute miles and scattered at 11,000 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 KGNB 130615Z AUTO 09005KT 10SM SCT110 09/M01 A3004 RMK AO2 T00861010

KGNB · day 13 at 06:15 UTC · wind from 090° at 5 kt · visibility 10+ SM · scattered layer at 11,000 ft · temp 9°C / dewpoint -1°C · altimeter 30.04" Hg · automated station w/ precipitation discriminator

// Runway analysis · computed from current METAR wind

Wind 090° @ 5 kt

1 USABLE · 1 AVOID

WIND

090°5 kt

HEADWIND CAUTION · HIGH XW AVOID · TAILWIND

HEADWIND ENDS 1 usable

09★ HDG 090° H5 kt X0 kt — PRIMARY · 5,001'

TAILWIND ENDS · AVOID 1 ends

27 HDG 270° T5 kt X0 kt — —

Pattern altitude: 9,203 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 +10°C

9,200FT

+997 FT ABOVE FIELD ELEV

// DA · LAST 24 HOURS loading…

FIELD ELEV8,203 FT OAT+9°C ISA DELTA+10°C PRESSURE ALT8,079 FT

// Performance equivalent Operating here right now feels like operating at KTEX (Telluride Regional Airport, Telluride, elev 9,070 ft) on a standard ISA day.

// Aircraft performance impact SIGNIFICANT

TAKEOFF ROLL CLIMB RATE

Single-engine propC172, PA-28, Cherokee

+92%

-64%

Turbo / high-perf pistonSR22T, Bonanza, Mooney

+64%

-41%

Light jetCJ4, Phenom 300, M2

+37%

-28%

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

// Reported layers (highest → lowest)

SCT110

Scattered · base 11,000 ft AGL · ~3–4 oktas

// Computed

CEILING— HIGHEST LAYER11,000 ft TOTAL COVERAGE~40% (mixed) FREEZING LEVEL12,546 ft VFR MARGINunlimited

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

13:12ZSUNRISE

18:51ZSOLAR NOON

00:30ZSUNSET

00:57ZCIVIL END

CURRENT06:32Z DAYLIGHT REMAINING0m VFR NIGHT BEGINS00:57Z (past) DAY LENGTH11h 18m

Waxing Crescent

ILLUMINATION4% MOONRISE14:44Z MOONSET02:02Z FULL MOON IN13 days

// Nearest reporting stations

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

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