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// K46U · Alpine Airport · Alpine

// Station · 23m ago

K46U

Alpine Airport
CAT VFR
WIND 330° / 4 kt
VIS 10+ SM
CEILING CLR
T/Td 21°C / 12°C
ALTIM 30.12 inHg
ELEV 5,634 FT
43.1819°N / 111.0387°W
LOCATION · Alpine, US
N
WIND
330°4 kt
K46U · 5,634 FT
© OSM · CartoDB

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

METRIC
NOW · 00Z
+6H
+12H
+18H
WIND
330°/4
 
 
 
VIS
10+ SM
 
 
 
CEILING
CLR
 
 
 
LAYERS
—
 
 
 
T / Td
21 / 12
 
 
 
ALTIM
30.12"
 
 
 

Loading TAF forecast…

// Interpretation

VFR with light winds at 330°/4 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 K46U 290055Z AUTO 33004KT 10SM CLR 21/12 A3012 RMK A01

K46U · day 29 at 00:55 UTC · wind from 330° at 4 kt · visibility 10+ SM · temp 21°C / dewpoint 12°C · altimeter 30.12" Hg

// Runway analysis · computed from current METAR wind

Wind 330° @ 4 kt
ALL USABLE · WINDS CALM
N
WIND
330°4 kt
HEADWIND CAUTION · HIGH XW AVOID · TAILWIND
ALL RUNWAYS · CALM WINDS 2 ends
13 HDG 130° —CALM —— 5,827'
31 HDG 310° —CALM —— 5,827'
Pattern altitude: 6,634 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

7,400FT
+1,766 FT ABOVE FIELD ELEV
// DA · LAST 24 HOURS loading…
FIELD ELEV5,634 FT OAT+21°C ISA DELTA+17°C PRESSURE ALT5,430 FT
// Performance equivalent Operating here right now feels like operating at KEMM (Kemmerer Municipal Airport, Kemmerer, elev 7,285 ft) on a standard ISA day.
// Aircraft performance impact MODERATE
TAKEOFF ROLL CLIMB RATE
Single-engine propC172, PA-28, Cherokee
+74%
-52%
Turbo / high-perf pistonSR22T, Bonanza, Mooney
+52%
-33%
Light jetCJ4, Phenom 300, M2
+30%
-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. Severity rating assumes a standard altimeter setting (29.92" Hg / 1013 hPa); a non-standard setting shifts the effective altitude by roughly 1,000 ft per 1" Hg of deviation.

// Cloud layers · clear · no layers reported

FT 0 5k 10k 15k 20k 25k FRZ LVL · 16,240 FT K46U ELEV · 5,634 FT
// Reported layers (highest → lowest)
CLR
No reported cloud layers — clear sky from surface to reporting ceiling.
// Computed
CEILING— HIGHEST LAYER— TOTAL COVERAGEclear FREEZING LEVEL16,240 ft VFR MARGINunlimited

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

12:45ZSUNRISE
19:26ZSOLAR NOON
02:08ZSUNSET
02:37ZCIVIL END
CURRENT01:18Z DAYLIGHT REMAINING49m VFR NIGHT BEGINS02:37Z (1h 19m) DAY LENGTH13h 22m
Waning Gibbous
ILLUMINATION99% MOONRISE01:32Z MOONSET14:55Z FULL MOON IN29 days

// Nearest reporting stations

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

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