// Station · 11h 12m ago · STALE · HARD STALE

LIRG

Guidonia Air Base

CAT VFR

WIND 310° / 12 kt

VIS 6+ SM

CEILING Few/scattered only

T/Td 25°C / 10°C

ALTIM 29.88 inHg

ELEV 289 FT

41.9903°N / 12.7408°E

LOCATION · Guidonia (RM), IT

WIND

310°12 kt

LIRG · 289 FT

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

METRIC

NOW · 13Z

+6H

+12H

+18H

WIND

310°/12

VIS

6+ SM

CEILING

—

LAYERS

FEW025

T / Td

25 / 10

ALTIM

29.88"

// Interpretation

VFR with moderate winds at 310°/12 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 LIRG 121355Z 31012KT 9999 FEW025TCU 25/10 Q1012

LIRG · day 12 at 13:55 UTC · wind from 310° at 12 kt · visibility 6+ SM · a few clouds at 2,500 ft · temp 25°C / dewpoint 10°C · altimeter 29.88" Hg

// Runway analysis · computed from current METAR wind

Wind 310° @ 12 kt

3 USABLE · 1 AVOID · 3 CAUTION

WIND

310°12 kt

HEADWIND CAUTION · HIGH XW AVOID · TAILWIND

HEADWIND ENDS 3 usable

36★ HDG 360° H8 kt X9 kt LEFT PRIMARY · 4,797'

04 HDG 040° H0 kt X12 kt LEFT ⚠ HIGH XW · 100%

22 HDG 220° H0 kt X12 kt RIGHT ⚠ HIGH XW · 100%

TAILWIND ENDS · AVOID 1 ends

18 HDG 180° T8 kt X9 kt RIGHT —

Pattern altitude: 1,289 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

1,600FT

+1,311 FT ABOVE FIELD ELEV

// DA · LAST 24 HOURS loading…

FIELD ELEV289 FT OAT+25°C ISA DELTA+11°C PRESSURE ALT325 FT

// Performance equivalent Operating here right now feels like operating at LIQN (Rieti Airfield, Rieti (RI), elev 1,278 ft) on a standard ISA day.

// Aircraft performance impact MODERATE

TAKEOFF ROLL CLIMB RATE

Single-engine propC172, PA-28, Cherokee

+16%

-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. 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)

FEW025

Few · base 2,500 ft AGL · ~1–2 oktas

// Computed

CEILING— HIGHEST LAYER2,500 ft TOTAL COVERAGE~15% (sparse) FREEZING LEVEL12,915 ft VFR MARGINunlimited

// Sun & Moon · times in Z · bar = local day (UTC+1)

05:19ZSUNRISE

10:56ZSOLAR NOON

16:33ZSUNSET

17:01ZCIVIL END

CURRENT01:07Z DAYLIGHT REMAINING15h 25m VFR NIGHT BEGINS17:01Z (15h 53m) DAY LENGTH11h 13m

Waxing Crescent

ILLUMINATION3% MOONRISE06:40Z MOONSET17:54Z FULL MOON IN13 days

// Nearest reporting stations

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

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