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// Station · 6m ago

K4I3

Knox County Airport
CAT VFR
WIND 270° / 3 kt
VIS 10+ SM
CEILING OVC at 4,900 ft
T/Td 23°C / 23°C
ALTIM 30.16 inHg
ELEV 1,191 FT
40.3287°N / 82.5238°W
LOCATION · Mount Vernon, US
N
WIND
270°3 kt
K4I3 · 1,191 FT
© OSM · CartoDB

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

METRIC
NOW · 02Z
+6H
+12H
+18H
WIND
270°/3
 
 
 
VIS
10+ SM
 
 
 
CEILING
OVC049
 
 
 
LAYERS
OVC049
 
 
 
T / Td
23 / 23
 
 
 
ALTIM
30.16"
 
 
 

// Interpretation

VFR — ceiling 4,900 ft. Light winds at 270°/3 kt, visibility better than 10 statute miles, 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 K4I3 150255Z AUTO 27003KT 10SM OVC049 23/23 A3016 RMK AO2

K4I3 · day 15 at 02:55 UTC · wind from 270° at 3 kt · visibility 10+ SM · overcast at 4,900 ft · temp 23°C / dewpoint 23°C · altimeter 30.16" Hg · automated station w/ precipitation discriminator

// Runway analysis · computed from current METAR wind

Wind 270° @ 3 kt
ALL USABLE · WINDS CALM
N
WIND
270°3 kt
HEADWIND CAUTION · HIGH XW AVOID · TAILWIND
ALL RUNWAYS · CALM WINDS 2 ends
10 HDG 100° CALM 5,504'
28 HDG 280° CALM 5,504'
Pattern altitude: 2,191 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 +10°C

2,100FT
+909 FT ABOVE FIELD ELEV
// DA · LAST 24 HOURS ↗ +0 FT
3,400 2,300 1,200
24h AGO18h12h6hNOW
FIELD ELEV1,191 FT OAT+23°C ISA DELTA+10°C PRESSURE ALT949 FT
// Performance equivalent Operating here right now feels like operating at KPSK (New River Valley Airport, Dublin, elev 2,105 ft) on a standard ISA day.
// Aircraft performance impact MINOR
TAKEOFF ROLL CLIMB RATE
Single-engine propC172, PA-28, Cherokee
+21%
-15%
Turbo / high-perf pistonSR22T, Bonanza, Mooney
+15%
-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 · 1 reported · highest to lowest

FT 0 5k 10k 15k 20k 25k FRZ LVL · 12,807 FT OVC049 · CEILING K4I3 ELEV · 1,191 FT
// Reported layers (highest → lowest)
OVC049
Overcast · base 4,900 ft AGL · 8 oktas
// Computed
CEILING4,900 ft AGL HIGHEST LAYER4,900 ft TOTAL COVERAGE~100% (overcast) FREEZING LEVEL12,807 ft VFR MARGIN+1,900 ft

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

10:13ZSUNRISE
17:37ZSOLAR NOON
01:00ZSUNSET
01:33ZCIVIL END
CURRENT03:01Z DAYLIGHT REMAINING0m VFR NIGHT BEGINS01:33Z (past) DAY LENGTH14h 47m
New Moon
ILLUMINATION0% MOONRISE10:29Z MOONSET01:17Z FULL MOON IN14 days

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

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

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