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// 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
N
WIND
VRB3 kt
KGPI · 2,977 FT
© OSM · CartoDB

// 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
N
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
5,900 4,450 3,000
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

FT 0 5k 10k 15k 20k 25k FRZ LVL · 13,634 FT KGPI ELEV · 2,977 FT
// 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

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

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