// Station · 20m ago

LSGS

Sion Airport

CAT VFR

WIND 280° / 9 kt

VIS 6+ SM

CEILING BKN at 13,000 ft

T/Td 24°C / 16°C

ALTIM 29.94 inHg

ELEV 1,582 FT

46.2192°N / 7.3269°E

LOCATION · Sion, CH

WIND

280°9 kt

LSGS · 1,582 FT

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

METRIC

NOW · 17Z

+6H

+12H

+18H

WIND

280°/9

VIS

6+ SM

CEILING

BKN130

LAYERS

BKN130

T / Td

24 / 16

ALTIM

29.94"

// Interpretation

VFR — ceiling 13,000 ft. Moderate winds at 280°/9 kt, visibility 6+ SM, broken at 13,000 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 LSGS 251750Z 28009KT 9999 BKN130 24/16 Q1014

LSGS · day 25 at 17:50 UTC · wind from 280° at 9 kt · visibility 6+ SM · broken layer at 13,000 ft · temp 24°C / dewpoint 16°C · altimeter 29.94" Hg

// Runway analysis · computed from current METAR wind

Wind 280° @ 9 kt

2 USABLE · 2 AVOID

WIND

280°9 kt

HEADWIND CAUTION · HIGH XW AVOID · TAILWIND

HEADWIND ENDS 2 usable

25★ HDG 250° H8 kt X4 kt RIGHT PRIMARY · 6,562'

25G HDG 250° H8 kt X4 kt RIGHT 1,837'

TAILWIND ENDS · AVOID 2 ends

07 HDG 070° T8 kt X5 kt LEFT —

07G HDG 070° T8 kt X5 kt LEFT —

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 +12°C

3,000FT

+1,418 FT ABOVE FIELD ELEV

// DA · LAST 24 HOURS loading…

FIELD ELEV1,582 FT OAT+24°C ISA DELTA+12°C PRESSURE ALT1,559 FT

// Performance equivalent Operating here right now feels like operating at LSGC (Les Eplatures Airport, La Chaux-de-Fonds, elev 3,368 ft) on a standard ISA day.

// Aircraft performance impact MODERATE

TAKEOFF ROLL CLIMB RATE

Single-engine propC172, PA-28, Cherokee

+30%

-21%

Turbo / high-perf pistonSR22T, Bonanza, Mooney

+21%

-14%

Light jetCJ4, Phenom 300, M2

+12%

-9%

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. Severity rating assumes a standard altimeter setting (29.92" Hg / 1013 hPa); a non-standard setting shifts the effective altitude by roughly 1,000 ft per 1" Hg of deviation.

// Cloud layers · 1 reported · highest to lowest

// Reported layers (highest → lowest)

BKN130

Broken · base 13,000 ft AGL · ~5–7 oktas

// Computed

CEILING13,000 ft AGL HIGHEST LAYER13,000 ft TOTAL COVERAGE~75% (mostly covered) FREEZING LEVEL13,703 ft VFR MARGIN+10,000 ft

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

04:43ZSUNRISE

11:34ZSOLAR NOON

18:25ZSUNSET

18:57ZCIVIL END

CURRENT18:10Z DAYLIGHT REMAINING14m VFR NIGHT BEGINS18:57Z (46m) DAY LENGTH13h 42m

Waxing Gibbous

ILLUMINATION94% MOONRISE14:49Z MOONSET04:31Z FULL MOON IN2 days

// Nearest reporting stations

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

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