// Station · 1h 10m ago · STALE

LPST

Sintra Air Base

CAT VFR

WIND 240° / 7 kt

VIS 6+ SM

CEILING Few/scattered only

T/Td 23°C / 16°C

ALTIM 29.97 inHg

ELEV 440 FT

38.8311°N / 9.3395°W

LOCATION · Sintra, PT

WIND

240°7 kt

LPST · 440 FT

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

METRIC

NOW · 17Z

+6H

+12H

+18H

WIND

240°/7

VIS

6+ SM

CEILING

—

LAYERS

FEW028

T / Td

23 / 16

ALTIM

29.97"

// Interpretation

VFR with light winds at 240°/7 kt. Visibility 6+ SM and a few at 2,800 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 LPST 251700Z 24007KT 210V290 9999 FEW028 23/16 Q1015

LPST · day 25 at 17:00 UTC · wind from 240° at 7 kt · visibility 6+ SM · a few clouds at 2,800 ft · temp 23°C / dewpoint 16°C · altimeter 29.97" Hg

// Runway analysis · computed from current METAR wind

Wind 240° @ 7 kt

1 USABLE · 1 AVOID · 1 CAUTION

WIND

240°7 kt

HEADWIND CAUTION · HIGH XW AVOID · TAILWIND

HEADWIND ENDS 1 usable

32★ HDG 320° H1 kt X7 kt LEFT PRIMARY · 5,906'

TAILWIND ENDS · AVOID 1 ends

14 HDG 140° T1 kt X7 kt RIGHT —

Pattern altitude: 1,440 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 +9°C

1,400FT

+960 FT ABOVE FIELD ELEV

// DA · LAST 24 HOURS loading…

FIELD ELEV440 FT OAT+23°C ISA DELTA+9°C PRESSURE ALT387 FT

// Performance equivalent Operating here right now feels like operating at LPCB (Aerodromo de Castelo Branco, Castelo Branco, elev 1,300 ft) on a standard ISA day.

// Aircraft performance impact MINOR

TAKEOFF ROLL CLIMB RATE

Single-engine propC172, PA-28, Cherokee

+14%

-10%

Turbo / high-perf pistonSR22T, Bonanza, Mooney

+10%

-6%

Light jetCJ4, Phenom 300, M2

+6%

-4%

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)

FEW028

Few · base 2,800 ft AGL · ~1–2 oktas

// Computed

CEILING— HIGHEST LAYER2,800 ft TOTAL COVERAGE~15% (sparse) FREEZING LEVEL12,056 ft VFR MARGINunlimited

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

06:01ZSUNRISE

12:41ZSOLAR NOON

19:20ZSUNSET

19:48ZCIVIL END

CURRENT18:10Z DAYLIGHT REMAINING1h 09m VFR NIGHT BEGINS19:48Z (1h 37m) DAY LENGTH13h 19m

Waxing Gibbous

ILLUMINATION94% MOONRISE16:07Z MOONSET05:27Z 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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