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// Station · 17m ago

KDEC

Decatur Airport
CAT VFR
WIND 100° / 5 kt
VIS 10+ SM
CEILING OVC at 4,900 ft
T/Td 25.6°C / 21.7°C
ALTIM 30.01 inHg
ELEV 682 FT
39.8346°N / 88.8657°W
LOCATION · Decatur, US
N
WIND
100°5 kt
KDEC · 682 FT
© OSM · CartoDB

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

METRIC
NOW · 15Z
+6H
+12H
+18H
WIND
100°/5
 
 
 
VIS
10+ SM
 
 
 
CEILING
OVC049
 
 
 
LAYERS
FEW015 OVC049
 
 
 
T / Td
26 / 22
 
 
 
ALTIM
30.01"
 
 
 

// Interpretation

VFR — ceiling 4,900 ft. Light winds at 100°/5 kt, visibility better than 10 statute miles, a few at 1,500 ft, and overcast at 4,900 ft. 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 KDEC 111554Z 10005KT 10SM FEW015 OVC049 26/22 A3001 RMK AO2 SLP156 T02560217

KDEC · day 11 at 15:54 UTC · wind from 100° at 5 kt · visibility 10+ SM · a few clouds at 1,500 ft · overcast at 4,900 ft · temp 26°C / dewpoint 22°C · altimeter 30.01" Hg · automated station w/ precipitation discriminator · sea-level pressure 1015.6 mb

// Runway analysis · computed from current METAR wind

Wind 100° @ 5 kt
3 USABLE · 3 AVOID
N
WIND
100°5 kt
HEADWIND CAUTION · HIGH XW AVOID · TAILWIND
HEADWIND ENDS 3 usable
12 HDG 120° H5 kt X2 kt LEFT PRIMARY · 6,799'
06 HDG 060° H4 kt X3 kt RIGHT 8,496'
18 HDG 180° H1 kt X5 kt LEFT 5,298'
TAILWIND ENDS · AVOID 3 ends
36 HDG 360° T1 kt X5 kt RIGHT
24 HDG 240° T4 kt X3 kt LEFT
30 HDG 300° T5 kt X2 kt RIGHT
Pattern altitude: 1,682 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

2,000FT
+1,318 FT ABOVE FIELD ELEV
// DA · LAST 24 HOURS ↘ -500 FT
2,900 2,100 1,300
24h AGO18h12h6hNOW
FIELD ELEV682 FT OAT+26°C ISA DELTA+12°C PRESSURE ALT591 FT
// Performance equivalent Operating here right now feels like operating at KUOS (Franklin County Airport, Sewanee, elev 1,953 ft) on a standard ISA day.
// Aircraft performance impact MINOR
TAKEOFF ROLL CLIMB RATE
Single-engine propC172, PA-28, Cherokee
+20%
-14%
Turbo / high-perf pistonSR22T, Bonanza, Mooney
+14%
-9%
Light jetCJ4, Phenom 300, M2
+8%
-6%

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 · 2 reported · highest to lowest

FT 0 5k 10k 15k 20k 25k FRZ LVL · 13,611 FT FEW015 OVC049 · CEILING KDEC ELEV · 682 FT
// Reported layers (highest → lowest)
OVC049
Overcast · base 4,900 ft AGL · 8 oktas
FEW015
Few · base 1,500 ft AGL · ~1–2 oktas
// Computed
CEILING4,900 ft AGL HIGHEST LAYER4,900 ft TOTAL COVERAGE~100% (overcast) FREEZING LEVEL13,611 ft VFR MARGIN+1,900 ft

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

10:37ZSUNRISE
18:02ZSOLAR NOON
01:26ZSUNSET
01:58ZCIVIL END
CURRENT16:11Z DAYLIGHT REMAINING9h 14m VFR NIGHT BEGINS01:58Z (9h 46m) DAY LENGTH14h 48m
Waning Crescent
ILLUMINATION11% MOONRISE08:05Z MOONSET22:54Z 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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