// Station · 14m ago

LSGS

Sion Airport

CAT VFR

WIND 240° / 11 kt

VIS 6+ SM

CEILING BKN at 12,000 ft

T/Td 23°C / 15°C

ALTIM 30.09 inHg

WX -RA

ELEV 1,582 FT

46.2192°N / 7.3269°E

LOCATION · Sion, CH

WIND

240°11 kt

LSGS · 1,582 FT

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

METRIC

NOW · 15Z

+6H

+12H

+18H

WIND

240°/11

VIS

6+ SM

CEILING

BKN120

LAYERS

FEW110 BKN120

T / Td

23 / 15

ALTIM

30.09"

// Interpretation

VFR — ceiling 12,000 ft. Moderate winds at 240°/11 kt, visibility 6+ SM, a few at 11,000 ft, and broken at 12,000 ft. Reported weather: -RA. 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 LSGS 111550Z AUTO 24011KT 210V270 9999 -RA FEW110 BKN120 SCT///CB 23/15 Q1019

LSGS · day 11 at 15:50 UTC · wind from 240° at 11 kt · visibility 6+ SM · a few clouds at 11,000 ft · broken layer at 12,000 ft · temp 23°C / dewpoint 15°C · altimeter 30.09" Hg · weather: -RA

// Runway analysis · computed from current METAR wind

Wind 240° @ 11 kt

2 USABLE · 2 AVOID

WIND

240°11 kt

HEADWIND CAUTION · HIGH XW AVOID · TAILWIND

HEADWIND ENDS 2 usable

25★ HDG 250° H11 kt X2 kt LEFT PRIMARY · 6,562'

25G HDG 250° H11 kt X2 kt LEFT 1,837'

TAILWIND ENDS · AVOID 2 ends

07 HDG 070° T11 kt X2 kt RIGHT —

07G HDG 070° T11 kt X2 kt RIGHT —

Pattern altitude: 2,582 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

2,700FT

+1,118 FT ABOVE FIELD ELEV

// DA · LAST 24 HOURS ↘ -1,300 FT

24h AGO18h12h6hNOW

FIELD ELEV1,582 FT OAT+23°C ISA DELTA+11°C PRESSURE ALT1,411 FT

// Performance equivalent Your aircraft will perform as if it's at a field 2,700 ft high on a standard ISA day — that's +1,118 ft above LSGS's actual elevation.

// Aircraft performance impact MINOR

TAKEOFF ROLL CLIMB RATE

Single-engine propC172, PA-28, Cherokee

+27%

-19%

Turbo / high-perf pistonSR22T, Bonanza, Mooney

+19%

-12%

Light jetCJ4, Phenom 300, M2

+11%

-8%

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

// Reported layers (highest → lowest)

BKN120

Broken · base 12,000 ft AGL · ~5–7 oktas

FEW110

Few · base 11,000 ft AGL · ~1–2 oktas

// Computed

CEILING12,000 ft AGL HIGHEST LAYER12,000 ft TOTAL COVERAGE~83% (mostly covered) FREEZING LEVEL13,198 ft VFR MARGIN+9,000 ft

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

03:51ZSUNRISE

11:37ZSOLAR NOON

19:23ZSUNSET

20:01ZCIVIL END

CURRENT16:04Z DAYLIGHT REMAINING3h 18m VFR NIGHT BEGINS20:01Z (3h 56m) DAY LENGTH15h 32m

Waning Crescent

ILLUMINATION11% MOONRISE01:18Z MOONSET16:51Z FULL MOON IN18 days

// Nearest reporting stations · 4 shown · 60 NM radius

LIMW

VFR

Aosta Corrado Gex Airport · Saint-Christophe (AO)

WIND: 270° / 12 kt
VIS: 6+ SM
CEILING: CLR
DIST: 29 NM S
AGE: 14m ago

LSMP

—

Payerne Air Base · Payerne

WIND: 310° / 5 kt
VIS: —
CEILING: SCT190
DIST: 41 NM NW
AGE: 14m ago

LSZB

VFR

Bern Airport · Bern

WIND: 010° / 5 kt
VIS: 6+ SM
CEILING: FEW048
DIST: 42 NM N
AGE: 14m ago

LSMM

—

Meiringen Air Base · Meiringen

WIND: 060° / 8 kt
VIS: —
CEILING: FEW093
DIST: 45 NM NE
AGE: 14m ago

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

AIRSPACE

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