// Station · 27m ago

KGPI

Glacier Park International Airport

CAT VFR

WIND VRB / 3 kt

VIS 10+ SM

CEILING CLR

T/Td 21.1°C / 11.1°C

ALTIM 29.91 inHg

ELEV 2,977 FT

48.3105°N / 114.2560°W

LOCATION · Kalispell, US

WIND

VRB3 kt

KGPI · 2,977 FT

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

METRIC

NOW · 15Z

+6H

+12H

+18H

WIND

VRB/3

VIS

10+ SM

CEILING

CLR

LAYERS

—

T / Td

21 / 11

ALTIM

29.91"

// Interpretation

VFR with light winds at variable/3 kt. Visibility better than 10 statute miles and no reported cloud layers. 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 KGPI 111555Z VRB03KT 10SM CLR 21/11 A2991 RMK AO2 SLP111 T02110111 $

KGPI · day 11 at 15:55 UTC · wind variable at 3 kt · visibility 10+ SM · temp 21°C / dewpoint 11°C · altimeter 29.91" Hg · automated station w/ precipitation discriminator · sea-level pressure 1011.1 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

02 HDG 020° —CALM —— 9,007'

20 HDG 200° —CALM —— 9,007'

12 HDG 120° —CALM —— 3,510'

30 HDG 300° —CALM —— 3,510'

Pattern altitude: 3,977 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 +12°C

4,400FT

+1,423 FT ABOVE FIELD ELEV

// DA · LAST 24 HOURS ↘ -200 FT

24h AGO18h12h6hNOW

FIELD ELEV2,977 FT OAT+21°C ISA DELTA+12°C PRESSURE ALT2,983 FT

// Performance equivalent Operating here right now feels like operating at KBZN (Bozeman Yellowstone International Airport, Bozeman, elev 4,473 ft) on a standard ISA day.

// Aircraft performance impact SIGNIFICANT

TAKEOFF ROLL CLIMB RATE

Single-engine propC172, PA-28, Cherokee

+44%

-31%

Turbo / high-perf pistonSR22T, Bonanza, Mooney

+31%

-20%

Light jetCJ4, Phenom 300, M2

+18%

-13%

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 LEVEL13,634 ft VFR MARGINunlimited

// Sun & Moon · times in Z · bar = local day (UTC-8)

11:49ZSUNRISE

19:43ZSOLAR NOON

03:38ZSUNSET

04:18ZCIVIL END

CURRENT16:22Z DAYLIGHT REMAINING11h 15m VFR NIGHT BEGINS04:18Z (11h 56m) DAY LENGTH15h 49m

Waning Crescent

ILLUMINATION11% MOONRISE09:17Z MOONSET01:06Z FULL MOON IN18 days

// Nearest reporting stations · 2 shown · 60 NM radius

K7S0

VFR

Ronan Airport · Ronan

WIND: 210° / 4 kt
VIS: 10+ SM
CEILING: CLR
DIST: 45 NM S
AGE: 7m ago

KS34

VFR

Plains Airport · Plains

WIND: CALM
VIS: 10+ SM
CEILING: CLR
DIST: 57 NM SW
AGE: 7m ago

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

AIRSPACE

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