// Station · 18h 59m ago · STALE · HARD STALE

SLYA

Yacuiba Airport

CAT VFR

WIND 030° / 3 kt

VIS 6+ SM

CEILING Few/scattered only

T/Td 25°C / 18°C

ALTIM 29.85 inHg

ELEV 2,112 FT

21.9609°S / 63.6517°W

LOCATION · Yacuíba, BO

WIND

030°3 kt

SLYA · 2,112 FT

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

METRIC

NOW · 20Z

+6H

+12H

+18H

WIND

030°/3

VIS

6+ SM

CEILING

—

LAYERS

FEW025

T / Td

25 / 18

ALTIM

29.85"

// Interpretation

VFR with light winds at 030°/3 kt. Visibility 6+ SM and a few at 2,500 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 SLYA 102000Z 03003KT 9999 FEW025 25/18 Q1011

SLYA · day 10 at 20:00 UTC · wind from 030° at 3 kt · visibility 6+ SM · a few clouds at 2,500 ft · temp 25°C / dewpoint 18°C · altimeter 29.85" Hg

// Runway analysis · computed from current METAR wind

Wind 030° @ 3 kt

ALL USABLE · WINDS CALM

WIND

030°3 kt

HEADWIND CAUTION · HIGH XW AVOID · TAILWIND

ALL RUNWAYS · CALM WINDS 2 ends

02 HDG 020° —CALM —— 6,890'

20 HDG 200° —CALM —— 6,890'

Pattern altitude: 3,112 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 +14°C

3,900FT

+1,788 FT ABOVE FIELD ELEV

// DA · LAST 24 HOURS ↗ +400 FT

24h AGO18h12h6hNOW

FIELD ELEV2,112 FT OAT+25°C ISA DELTA+14°C PRESSURE ALT2,177 FT

// Performance equivalent Your aircraft will perform as if it's at a field 3,900 ft high on a standard ISA day — that's +1,788 ft above SLYA's actual elevation.

// Aircraft performance impact SIGNIFICANT

TAKEOFF ROLL CLIMB RATE

Single-engine propC172, PA-28, Cherokee

+39%

-27%

Turbo / high-perf pistonSR22T, Bonanza, Mooney

+27%

-18%

Light jetCJ4, Phenom 300, M2

+16%

-12%

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

// Reported layers (highest → lowest)

FEW025

Few · base 2,500 ft AGL · ~1–2 oktas

// Computed

CEILING— HIGHEST LAYER2,500 ft TOTAL COVERAGE~15% (sparse) FREEZING LEVEL14,738 ft VFR MARGINunlimited

// Sun & Moon · times in Z · bar = local day (UTC-4)

10:54ZSUNRISE

16:21ZSOLAR NOON

21:47ZSUNSET

22:11ZCIVIL END

CURRENT14:59Z DAYLIGHT REMAINING6h 48m VFR NIGHT BEGINS22:11Z (7h 12m) DAY LENGTH10h 52m

Waning Crescent

ILLUMINATION11% MOONRISE08:20Z MOONSET19:12Z FULL MOON IN18 days

// Nearest reporting stations · 1 shown · 100 NM (sparse area)

SLTJ

MVFR → VFR 16Z

Capitan Oriel Lea Plaza Airport · Tarija

WIND: 180° / 4 kt
VIS: 6+ SM
CEILING: BKN025
DIST: 63 NM W
AGE: 59m ago

// Area map · 80 NM radius · CartoDB Dark Matter + aeronautical overlay

AIRSPACE

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