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// KJWN · John C Tune Airport · Nashville

// STALE Observation is 1h 32m old — METAR cadence is typically hourly. A fresh report may be on its way.

// Station · 1h 32m ago · STALE

KJWN

John C Tune Airport
CAT VFR
WIND CALM
VIS 10+ SM
CEILING Few/scattered only
T/Td 25°C / 18°C
ALTIM 30.04 inHg
ELEV 495 FT
36.1824°N / 86.8867°W
LOCATION · Nashville, US
N
WIND
000°0 kt
KJWN · 495 FT
© OSM · CartoDB

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

METRIC
NOW · 01Z
+6H
+12H
+18H
WIND
CALM
 
 
 
VIS
10+ SM
 
 
 
CEILING
—
 
 
 
LAYERS
SCT070
 
 
 
T / Td
25 / 18
 
 
 
ALTIM
30.04"
 
 
 

Loading TAF forecast…

// Interpretation

VFR with winds calm. Visibility better than 10 statute miles and scattered at 7,000 ft. Would shift to MVFR if the ceiling drops to 3,000 ft or visibility below 5 SM.

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

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// Raw observation METAR string + decoded

METAR KJWN 290150Z 00000KT 10SM SCT070 25/18 A3004

KJWN · day 29 at 01:50 UTC · winds calm · visibility 10+ SM · scattered layer at 7,000 ft · temp 25°C / dewpoint 18°C · altimeter 30.04" Hg

// 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 2 ends
02 HDG 020° —CALM —— 6,001'
20 HDG 200° —CALM —— 6,001'
Pattern altitude: 1,495 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 +11°C

1,700FT
+1,205 FT ABOVE FIELD ELEV
// DA · LAST 24 HOURS loading…
FIELD ELEV495 FT OAT+25°C ISA DELTA+11°C PRESSURE ALT371 FT
// Performance equivalent Operating here right now feels like operating at KRKW (Rockwood Municipal Airport, Rockwood, elev 1,664 ft) on a standard ISA day.
// Aircraft performance impact MODERATE
TAKEOFF ROLL CLIMB RATE
Single-engine propC172, PA-28, Cherokee
+17%
-12%
Turbo / high-perf pistonSR22T, Bonanza, Mooney
+12%
-8%
Light jetCJ4, Phenom 300, M2
+7%
-5%

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 · 1 reported · highest to lowest

FT 0 5k 10k 15k 20k 25k FRZ LVL · 13,121 FT SCT070 KJWN ELEV · 495 FT
// Reported layers (highest → lowest)
SCT070
Scattered · base 7,000 ft AGL · ~3–4 oktas
// Computed
CEILING— HIGHEST LAYER7,000 ft TOTAL COVERAGE~40% (mixed) FREEZING LEVEL13,121 ft VFR MARGINunlimited

// Sun & Moon · times in Z · bar = local day (UTC-6)

11:17ZSUNRISE
17:50ZSOLAR NOON
00:23ZSUNSET
00:49ZCIVIL END
CURRENT03:22Z DAYLIGHT REMAINING0m VFR NIGHT BEGINS00:49Z (past) DAY LENGTH13h 05m
Waning Gibbous
ILLUMINATION99% MOONRISE00:08Z MOONSET13:14Z FULL MOON IN28 days

// Nearest reporting stations

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

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