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// Station · 12m ago

KLAF

Purdue University Airport
CAT VFR
WIND CALM
VIS 9.0 SM
CEILING Few/scattered only
T/Td 21.7°C / 20°C
ALTIM 30.00 inHg
ELEV 606 FT
40.4129°N / 86.9394°W
LOCATION · West Lafayette, US
N
WIND
000°0 kt
KLAF · 606 FT
© OSM · CartoDB

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

METRIC
NOW · 12Z
+6H
+12H
+18H
WIND
CALM
 
 
 
VIS
9.0 SM
 
 
 
CEILING
 
 
 
LAYERS
SCT110
 
 
 
T / Td
22 / 20
 
 
 
ALTIM
30.00"
 
 
 

// Interpretation

VFR with winds calm. Visibility 9.0 SM and scattered at 11,000 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 KLAF 111254Z 00000KT 9SM SCT110 22/20 A3000 RMK AO2 LTG DSNT S SLP157 T02170200

KLAF · day 11 at 12:54 UTC · winds calm · visibility 9.0 SM · scattered layer at 11,000 ft · temp 22°C / dewpoint 20°C · altimeter 30.00" Hg · automated station w/ precipitation discriminator · sea-level pressure 1015.7 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
10 HDG 100° CALM 6,600'
28 HDG 280° CALM 6,600'
05 HDG 050° CALM 4,225'
23 HDG 230° CALM 4,225'
Pattern altitude: 1,606 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 +8°C

1,500FT
+894 FT ABOVE FIELD ELEV
// DA · LAST 24 HOURS ↘ -500 FT
3,000 2,000 1,000
24h AGO18h12h6hNOW
FIELD ELEV606 FT OAT+22°C ISA DELTA+8°C PRESSURE ALT524 FT
// Performance equivalent Operating here right now feels like operating at KRID (Richmond Municipal Airport, Richmond, elev 1,140 ft) on a standard ISA day.
// Aircraft performance impact MINOR
TAKEOFF ROLL CLIMB RATE
Single-engine propC172, PA-28, Cherokee
+15%
-11%
Turbo / high-perf pistonSR22T, Bonanza, Mooney
+11%
-7%
Light jetCJ4, Phenom 300, M2
+6%
-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.

// Cloud layers · 1 reported · highest to lowest

FT 0 5k 10k 15k 20k 25k FRZ LVL · 11,566 FT SCT110 KLAF ELEV · 606 FT
// Reported layers (highest → lowest)
SCT110
Scattered · base 11,000 ft AGL · ~3–4 oktas
// Computed
CEILING HIGHEST LAYER11,000 ft TOTAL COVERAGE~40% (mixed) FREEZING LEVEL11,566 ft VFR MARGINunlimited

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

10:28ZSUNRISE
17:54ZSOLAR NOON
01:20ZSUNSET
01:52ZCIVIL END
CURRENT13:06Z DAYLIGHT REMAINING12h 13m VFR NIGHT BEGINS01:52Z (12h 45m) DAY LENGTH14h 51m
Waning Crescent
ILLUMINATION11% MOONRISE07:50Z MOONSET22:41Z FULL MOON IN18 days

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

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

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