// Station · 8m ago

KGNB

Granby Grand County Airport

CAT VFR

WIND 230° / 16 kt G22

VIS 10+ SM

CEILING CLR

T/Td 15.9°C / -2.8°C

ALTIM 30.09 inHg

WX VCTS

ELEV 8,203 FT

40.0897°N / 105.9170°W

LOCATION · Granby, US

WIND

230°16 kt

KGNB · 8,203 FT

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

METRIC

NOW · 20Z

+6H

+12H

+18H

WIND

230°/16G22

VIS

10+ SM

CEILING

CLR

LAYERS

—

T / Td

16 / -3

ALTIM

30.09"

// Interpretation

VFR with brisk winds at 230°/16 kt, gusting 22. Visibility better than 10 statute miles and no reported cloud layers. Reported weather: VCTS. 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 302055Z AUTO 23016G22KT 10SM VCTS CLR 16/M03 A3009 RMK AO2 LTG DSNT SE T01591028

KGNB · day 30 at 20:55 UTC · wind from 230° at 16 kt, gusts to 22 kt · visibility 10+ SM · temp 16°C / dewpoint -3°C · altimeter 30.09" Hg · weather: VCTS · automated station w/ precipitation discriminator

// Runway analysis · computed from current METAR wind

Wind 230° @ 16 ktG22

1 USABLE · 1 AVOID

WIND

230°16G22 kt

HEADWIND CAUTION · HIGH XW AVOID · TAILWIND

HEADWIND ENDS 1 usable

27★ HDG 270° H12 kt X10 kt LEFT PRIMARY · 5,001'

TAILWIND ENDS · AVOID 1 ends

09 HDG 090° T12 kt X10 kt RIGHT —

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 +17°C

10,000FT

+1,797 FT ABOVE FIELD ELEV

// DA · LAST 24 HOURS ↘ -200 FT

24h AGO18h12h6hNOW

FIELD ELEV8,203 FT OAT+16°C ISA DELTA+17°C PRESSURE ALT8,032 FT

// Performance equivalent Operating here right now feels like operating at KLXV (Lake County Airport, Leadville, elev 9,927 ft) on a standard ISA day.

// Aircraft performance impact DANGEROUS

TAKEOFF ROLL CLIMB RATE

Single-engine propC172, PA-28, Cherokee

+100%

-70%

Turbo / high-perf pistonSR22T, Bonanza, Mooney

+70%

-45%

Light jetCJ4, Phenom 300, M2

+40%

-30%

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 · clear · no layers reported

// Reported layers (highest → lowest)

CLR

No reported cloud layers — clear sky from surface to reporting ceiling.

// Computed

CEILING— HIGHEST LAYER— TOTAL COVERAGEclear FREEZING LEVEL16,233 ft VFR MARGINunlimited

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

11:39ZSUNRISE

19:02ZSOLAR NOON

02:26ZSUNSET

02:58ZCIVIL END

CURRENT21:03Z DAYLIGHT REMAINING5h 22m VFR NIGHT BEGINS02:58Z (5h 54m) DAY LENGTH14h 47m

Full Moon

ILLUMINATION100% MOONRISE23:08Z MOONSET13:56Z FULL MOON IN1 day

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

K20V

VFR

McElroy Airfield · Kremmling

WIND: 240° / 11 ktG22
VIS: 10+ SM
CEILING: CLR
DIST: 21 NM W
AGE: 8m ago

KBDU

VFR

Boulder Municipal Airport · Boulder

WIND: 060° / 7 kt
VIS: 7.0 SM
CEILING: BKN050
DIST: 32 NM E
AGE: 8m ago

KLMO

VFR

Vance Brand Airport · Longmont

WIND: 280° / 17 ktG26
VIS: 10+ SM
CEILING: OVC060
DIST: 35 NM E
AGE: 8m ago

KBJC

VFR

Rocky Mountain Metropolitan Airport · Denver

WIND: 250° / 26 ktG34
VIS: 10+ SM
CEILING: BKN090
DIST: 38 NM E
AGE: 18m ago

KEIK

VFR

Erie Municipal Airport · Erie

WIND: 270° / 17 ktG27
VIS: 10+ SM
CEILING: BKN100
DIST: 40 NM E
AGE: 8m ago

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

AIRSPACE

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