// Station · 32m ago
KGTF
Great Falls International Airport
CAT VFR
WIND CALM
VIS 10+ SM
CEILING CLR
T/Td 20.6°C / 8.9°C
ALTIM 29.89 inHg
ELEV 3,680 FT
47.4820°N / 111.3710°W
LOCATION · Great Falls, US
WIND
000°0 kt
KGTF · 3,680 FT
© OSM · CartoDB
// Current + 24h forecast · METAR loaded · TAF loading…
METRIC
NOW · 13Z
+6H
+12H
+18H
WIND
CALM
VIS
10+ SM
CEILING
CLR
LAYERS
—
T / Td
21 / 9
ALTIM
29.89"
// Interpretation
VFR with winds calm. 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…
// Want this glance-able on 10 airports? METAR Deck →// Raw observation METAR string + decoded
METAR KGTF 111353Z 00000KT 10SM CLR 21/09 A2989 RMK AO2 SLP085 T02060089 $
KGTF · day 11 at 13:53 UTC · winds calm · visibility 10+ SM · temp 21°C / dewpoint 9°C · altimeter 29.89" Hg · automated station w/ precipitation discriminator · sea-level pressure 1008.5 mb
// Runway analysis · computed from current METAR wind
Wind CALM
ALL USABLE · WINDS CALM
WIND
000°calm
HEADWIND
CAUTION · HIGH XW
AVOID · TAILWIND
ALL RUNWAYS · CALM WINDS
6 ends
03
HDG 030°
—CALM
——
10,502'
21
HDG 210°
—CALM
——
10,502'
17
HDG 170°
—CALM
——
6,030'
35
HDG 350°
—CALM
——
6,030'
07
HDG 070°
—CALM
——
4,294'
25
HDG 250°
—CALM
——
4,294'
Pattern altitude: 4,680 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 +13°C
5,300FT
+1,620 FT ABOVE FIELD ELEV
// DA · LAST 24 HOURS
↘ -200 FT
24h AGO18h12h6hNOW
FIELD ELEV3,680 FT
OAT+21°C
ISA DELTA+13°C
PRESSURE ALT3,707 FT
// Performance equivalent
Operating here right now feels like operating at KDLN
(Dillon Airport, Dillon, elev 5,241 ft)
on a standard ISA day.
// Aircraft performance impact
SIGNIFICANT
TAKEOFF ROLL
CLIMB RATE
Single-engine propC172, PA-28, Cherokee
+53%
-37%
Turbo / high-perf pistonSR22T, Bonanza, Mooney
+37%
-24%
Light jetCJ4, Phenom 300, M2
+21%
-16%
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
// Sun & Moon · times in Z · bar = local day (UTC-7)
11:41ZSUNRISE
19:32ZSOLAR NOON
03:23ZSUNSET
04:02ZCIVIL END
CURRENT14:25Z
DAYLIGHT REMAINING12h 57m
VFR NIGHT BEGINS04:02Z (13h 36m)
DAY LENGTH15h 42m
Waning Crescent
ILLUMINATION11%
MOONRISE09:05Z
MOONSET00:47Z
FULL MOON IN18 days
// Nearest reporting stations · 5 shown · 100 NM (sparse area)
KGFA
VFR
Malmstrom Air Force Base · Great Falls
- WIND
- 200° / 3 kt
- VIS
- 10+ SM
- CEILING
- SCT150
- DIST
- 8 NM E
- AGE
- 30m ago
K79S
VFR
Fort Benton Airport · Fort Benton
- WIND
- CALM
- VIS
- 10+ SM
- CEILING
- CLR
- DIST
- 37 NM NE
- AGE
- 10m ago
KHLN
VFR
Helena Regional Airport · Helena
- WIND
- CALM
- VIS
- 10+ SM
- CEILING
- CLR
- DIST
- 58 NM SW
- AGE
- 32m ago
KSBX
VFR
Shelby Airport · Shelby
- WIND
- CALM
- VIS
- 10+ SM
- CEILING
- CLR
- DIST
- 67 NM N
- AGE
- 10m ago
KCTB
VFR
Cut Bank International Airport · Cut Bank
- WIND
- 310° / 5 kt
- VIS
- 10+ SM
- CEILING
- CLR
- DIST
- 79 NM NW
- AGE
- 29m ago
// Area map · 80 NM radius · CartoDB Dark Matter + aeronautical overlay
© OpenStreetMap · CartoDB · OpenAIP
//
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