// Station · 15m ago

TNCM

Princess Juliana International Airport

CAT VFR

WIND 080° / 17 kt

VIS 6+ SM

CEILING Few/scattered only

T/Td 31°C / 24°C

ALTIM 30.09 inHg

ELEV 13 FT

18.0410°N / 63.1089°W

LOCATION · Sint Maarten, SX

WIND

080°17 kt

TNCM · 13 FT

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

METRIC

NOW · 15Z

+6H

+12H

+18H

WIND

080°/17

VIS

6+ SM

CEILING

—

LAYERS

SCT019

T / Td

31 / 24

ALTIM

30.09"

// Interpretation

VFR with brisk winds at 080°/17 kt. Visibility 6+ SM and scattered at 1,900 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 TNCM 111500Z 08017KT 9999 SCT019 31/24 Q1019 NOSIG

TNCM · day 11 at 15:00 UTC · wind from 080° at 17 kt · visibility 6+ SM · scattered layer at 1,900 ft · temp 31°C / dewpoint 24°C · altimeter 30.09" Hg

// Runway analysis · computed from current METAR wind

Wind 080° @ 17 kt

1 USABLE · 1 AVOID

WIND

080°17 kt

HEADWIND CAUTION · HIGH XW AVOID · TAILWIND

HEADWIND ENDS 1 usable

10★ HDG 100° H16 kt X6 kt LEFT PRIMARY · 7,546'

TAILWIND ENDS · AVOID 1 ends

28 HDG 280° T16 kt X6 kt RIGHT —

Pattern altitude: 1,013 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 +16°C

1,700FT

+1,687 FT ABOVE FIELD ELEV

// DA · LAST 24 HOURS ↗ +0 FT

24h AGO18h12h6hNOW

FIELD ELEV13 FT OAT+31°C ISA DELTA+16°C PRESSURE ALT-158 FT

// Performance equivalent Your aircraft will perform as if it's at a field 1,700 ft high on a standard ISA day — that's +1,687 ft above TNCM's actual elevation.

// Aircraft performance impact MINOR

TAKEOFF ROLL CLIMB RATE

Single-engine propC172, PA-28, Cherokee

+17%

-12%

Turbo / high-perf pistonSR22T, Bonanza, Mooney

+12%

-8%

Light jetCJ4, Phenom 300, M2

+7%

-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.

// Cloud layers · 1 reported · highest to lowest

// Reported layers (highest → lowest)

SCT019

Scattered · base 1,900 ft AGL · ~3–4 oktas

// Computed

CEILING— HIGHEST LAYER1,900 ft TOTAL COVERAGE~40% (mixed) FREEZING LEVEL15,670 ft VFR MARGINunlimited

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

09:44ZSUNRISE

16:19ZSOLAR NOON

22:53ZSUNSET

23:17ZCIVIL END

CURRENT15:15Z DAYLIGHT REMAINING7h 37m VFR NIGHT BEGINS23:17Z (8h 01m) DAY LENGTH13h 08m

Waning Crescent

ILLUMINATION11% MOONRISE07:10Z MOONSET20:19Z FULL MOON IN18 days

// Nearest reporting stations

No nearby reporting stations found within 200 NM of TNCM.

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

AIRSPACE

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