// Station · 50m ago

FMNA

Arrachart Airport

CAT VFR

WIND 140° / 12 kt

VIS 6+ SM

CEILING Few/scattered only

T/Td 31°C / 18°C

ALTIM 29.97 inHg

ELEV 374 FT

12.3494°S / 49.2917°E

LOCATION · Antisiranana, MG

WIND

140°12 kt

FMNA · 374 FT

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

METRIC

NOW · 09Z

+6H

+12H

+18H

WIND

140°/12

VIS

6+ SM

CEILING

—

LAYERS

SCT020

T / Td

31 / 18

ALTIM

29.97"

// Interpretation

VFR with moderate winds at 140°/12 kt. Visibility 6+ SM and scattered at 2,000 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 FMNA 270900Z 14012KT 9999 SCT020 31/18 Q1015

FMNA · day 27 at 09:00 UTC · wind from 140° at 12 kt · visibility 6+ SM · scattered layer at 2,000 ft · temp 31°C / dewpoint 18°C · altimeter 29.97" Hg

// Runway analysis · computed from current METAR wind

Wind 140° @ 12 kt

1 USABLE · 1 AVOID

WIND

140°12 kt

HEADWIND CAUTION · HIGH XW AVOID · TAILWIND

HEADWIND ENDS 1 usable

13★ HDG 130° H12 kt X2 kt RIGHT PRIMARY · 4,921'

TAILWIND ENDS · AVOID 1 ends

31 HDG 310° T12 kt X2 kt LEFT —

Pattern altitude: 1,374 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 +17°C

2,300FT

+1,926 FT ABOVE FIELD ELEV

// DA · LAST 24 HOURS ↗ +100 FT

24h AGO18h12h6hNOW

FIELD ELEV374 FT OAT+31°C ISA DELTA+17°C PRESSURE ALT321 FT

// Performance equivalent Your aircraft will perform as if it's at a field 2,300 ft high on a standard ISA day — that's +1,926 ft above FMNA's actual elevation.

// Aircraft performance impact MINOR

TAKEOFF ROLL CLIMB RATE

Single-engine propC172, PA-28, Cherokee

+23%

-16%

Turbo / high-perf pistonSR22T, Bonanza, Mooney

+16%

-10%

Light jetCJ4, Phenom 300, M2

+9%

-7%

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)

SCT020

Scattered · base 2,000 ft AGL · ~3–4 oktas

// Computed

CEILING— HIGHEST LAYER2,000 ft TOTAL COVERAGE~40% (mixed) FREEZING LEVEL16,031 ft VFR MARGINunlimited

// Sun & Moon · times in Z · bar = local day (UTC+3)

02:57ZSUNRISE

08:41ZSOLAR NOON

14:25ZSUNSET

14:48ZCIVIL END

CURRENT09:50Z DAYLIGHT REMAINING4h 35m VFR NIGHT BEGINS14:48Z (4h 58m) DAY LENGTH11h 28m

Waxing Gibbous

ILLUMINATION82% MOONRISE11:37Z MOONSET23:06Z FULL MOON IN4 days

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

FMNN

VFR

Nosy Be International Airport · Nosy Be

WIND: 040° / 4 kt
VIS: 6+ SM
CEILING: FEW020
DIST: 81 NM SW
AGE: 50m ago

// Area map · 100 NM radius · CartoDB Dark Matter + aeronautical overlay

AIRSPACE

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