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// Station · 5m ago

KBTM

Bert Mooney Airport
CAT VFR
WIND CALM
VIS 10+ SM
CEILING CLR
T/Td 19.4°C / 5.6°C
ALTIM 30.08 inHg
ELEV 5,550 FT
45.9548°N / 112.4970°W
LOCATION · Butte, US
N
WIND
000°0 kt
KBTM · 5,550 FT
© OSM · CartoDB

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

METRIC
NOW · 14Z
+6H
+12H
+18H
WIND
CALM
 
 
 
VIS
10+ SM
 
 
 
CEILING
CLR
 
 
 
LAYERS
 
 
 
T / Td
19 / 6
 
 
 
ALTIM
30.08"
 
 
 

// 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…

SOURCES · NOAA Aviation Weather Center METAR (TAF loading…)

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// Raw observation METAR string + decoded

METAR KBTM 111453Z AUTO 00000KT 10SM CLR 19/06 A3008 RMK AO2 SLP114 T01940056 51007

KBTM · day 11 at 14:53 UTC · winds calm · visibility 10+ SM · temp 19°C / dewpoint 6°C · altimeter 30.08" Hg · automated station w/ precipitation discriminator · sea-level pressure 1011.4 mb

// Runway analysis · computed from current METAR wind

Wind CALM
ALL USABLE · WINDS CALM
N
WIND
000°calm
HEADWIND CAUTION · HIGH XW AVOID · TAILWIND
ALL RUNWAYS · CALM WINDS 4 ends
15 HDG 150° CALM 9,000'
33 HDG 330° CALM 9,000'
12 HDG 120° CALM 5,100'
30 HDG 300° CALM 5,100'
Pattern altitude: 6,550 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 +15°C

7,200FT
+1,650 FT ABOVE FIELD ELEV
// DA · LAST 24 HOURS ↗ +100 FT
9,000 7,400 5,800
24h AGO18h12h6hNOW
FIELD ELEV5,550 FT OAT+19°C ISA DELTA+15°C PRESSURE ALT5,388 FT
// Performance equivalent Operating here right now feels like operating at KPNA (Ralph Wenz Field, Pinedale, elev 7,102 ft) on a standard ISA day.
// Aircraft performance impact DANGEROUS
TAKEOFF ROLL CLIMB RATE
Single-engine propC172, PA-28, Cherokee
+72%
-50%
Turbo / high-perf pistonSR22T, Bonanza, Mooney
+50%
-32%
Light jetCJ4, Phenom 300, M2
+29%
-22%

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 · 15,348 FT KBTM ELEV · 5,550 FT
// Reported layers (highest → lowest)
CLR
No reported cloud layers — clear sky from surface to reporting ceiling.
// Computed
CEILING HIGHEST LAYER TOTAL COVERAGEclear FREEZING LEVEL15,348 ft VFR MARGINunlimited

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

11:51ZSUNRISE
19:36ZSOLAR NOON
03:21ZSUNSET
03:58ZCIVIL END
CURRENT14:58Z DAYLIGHT REMAINING12h 22m VFR NIGHT BEGINS03:58Z (12h 59m) DAY LENGTH15h 29m
Waning Crescent
ILLUMINATION11% MOONRISE09:17Z MOONSET00:46Z FULL MOON IN18 days

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

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

© OpenStreetMap · CartoDB · OpenAIP
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