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// Station · 20m ago

LFLY

Lyon Bron Airport
CAT VFR
WIND VRB / 3 kt
VIS 6+ SM
CEILING CLR
T/Td 29°C / 19°C
ALTIM 30.21 inHg
ELEV 659 FT
45.7279°N / 4.9440°E
LOCATION · Chassieu, Lyon, FR
N
WIND
VRB3 kt
LFLY · 659 FT
© OSM · CartoDB

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

METRIC
NOW · 09Z
+6H
+12H
+18H
WIND
VRB/3
 
 
 
VIS
6+ SM
 
 
 
CEILING
CLR
 
 
 
LAYERS
 
 
 
T / Td
29 / 19
 
 
 
ALTIM
30.21"
 
 
 

// Interpretation

VFR with light winds at variable/3 kt. Visibility 6+ SM 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 LFLY 270930Z AUTO VRB03KT CAVOK 29/19 Q1023 NOSIG

LFLY · day 27 at 09:30 UTC · wind variable at 3 kt · visibility 6+ SM · temp 29°C / dewpoint 19°C · altimeter 30.21" Hg

// Runway analysis · computed from current METAR wind

Wind VRB @ 3 kt
ALL USABLE · WINDS CALM
N
WIND
VRB3 kt
HEADWIND CAUTION · HIGH XW AVOID · TAILWIND
ALL RUNWAYS · CALM WINDS 2 ends
16 HDG 160° CALM 5,971'
34 HDG 340° CALM 5,971'
Pattern altitude: 1,659 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 +15°C

2,100FT
+1,441 FT ABOVE FIELD ELEV
// DA · LAST 24 HOURS ↗ +100 FT
2,900 1,650 400
24h AGO18h12h6hNOW
FIELD ELEV659 FT OAT+29°C ISA DELTA+15°C PRESSURE ALT370 FT
// Performance equivalent Operating here right now feels like operating at LFLW (Aurillac airport, Aurillac, elev 2,096 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 · clear · no layers reported

FT 0 5k 10k 15k 20k 25k FRZ LVL · 15,305 FT LFLY ELEV · 659 FT
// Reported layers (highest → lowest)
CLR
No reported cloud layers — clear sky from surface to reporting ceiling.
// Computed
CEILING HIGHEST LAYER TOTAL COVERAGEclear FREEZING LEVEL15,305 ft VFR MARGINunlimited

// Sun & Moon · times in Z · bar = local day (UTC+0)

03:59ZSUNRISE
11:38ZSOLAR NOON
19:18ZSUNSET
19:55ZCIVIL END
CURRENT09:50Z DAYLIGHT REMAINING9h 28m VFR NIGHT BEGINS19:55Z (10h 04m) DAY LENGTH15h 19m
Waxing Gibbous
ILLUMINATION82% MOONRISE12:39Z MOONSET03:59Z FULL MOON IN4 days

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

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

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