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// Station · 53m ago

TNCM

Princess Juliana International Airport
CAT VFR
WIND 080° / 9 kt
VIS 6+ SM
CEILING Few/scattered only
T/Td 27°C / 24°C
ALTIM 30.06 inHg
WX VCSH
ELEV 13 FT
18.0410°N / 63.1089°W
LOCATION · Sint Maarten, SX
N
WIND
080°9 kt
TNCM · 13 FT
© OSM · CartoDB

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

METRIC
NOW · 11Z
+6H
+12H
+18H
WIND
080°/9
 
 
 
VIS
6+ SM
 
 
 
CEILING
 
 
 
LAYERS
SCT018
 
 
 
T / Td
27 / 24
 
 
 
ALTIM
30.06"
 
 
 

// Interpretation

VFR with moderate winds at 080°/9 kt. Visibility 6+ SM and scattered at 1,800 ft. Reported weather: VCSH. 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 271100Z 08009KT 9999 VCSH SCT018 27/24 Q1018 NOSIG

TNCM · day 27 at 11:00 UTC · wind from 080° at 9 kt · visibility 6+ SM · scattered layer at 1,800 ft · temp 27°C / dewpoint 24°C · altimeter 30.06" Hg · weather: VCSH

// Runway analysis · computed from current METAR wind

Wind 080° @ 9 kt
1 USABLE · 1 AVOID
N
WIND
080°9 kt
HEADWIND CAUTION · HIGH XW AVOID · TAILWIND
HEADWIND ENDS 1 usable
10 HDG 100° H8 kt X3 kt LEFT PRIMARY · 7,546'
TAILWIND ENDS · AVOID 1 ends
28 HDG 280° T8 kt X3 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 +12°C

1,300FT
+1,287 FT ABOVE FIELD ELEV
// DA · LAST 24 HOURS ↗ +100 FT
1,700 1,400 1,100
24h AGO18h12h6hNOW
FIELD ELEV13 FT OAT+27°C ISA DELTA+12°C PRESSURE ALT-129 FT
// Performance equivalent Your aircraft will perform as if it's at a field 1,300 ft high on a standard ISA day — that's +1,287 ft above TNCM's actual elevation.
// Aircraft performance impact MINOR
TAKEOFF ROLL CLIMB RATE
Single-engine propC172, PA-28, Cherokee
+13%
-9%
Turbo / high-perf pistonSR22T, Bonanza, Mooney
+9%
-6%
Light jetCJ4, Phenom 300, M2
+5%
-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.

// Cloud layers · 1 reported · highest to lowest

FT 0 5k 10k 15k 20k 25k FRZ LVL · 13,649 FT SCT018 TNCM ELEV · 13 FT
// Reported layers (highest → lowest)
SCT018
Scattered · base 1,800 ft AGL · ~3–4 oktas
// Computed
CEILING HIGHEST LAYER1,800 ft TOTAL COVERAGE~40% (mixed) FREEZING LEVEL13,649 ft VFR MARGINunlimited

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

09:38ZSUNRISE
16:11ZSOLAR NOON
22:44ZSUNSET
23:07ZCIVIL END
CURRENT11:53Z DAYLIGHT REMAINING10h 50m VFR NIGHT BEGINS23:07Z (11h 14m) DAY LENGTH13h 05m
Waxing Gibbous
ILLUMINATION83% MOONRISE18:22Z MOONSET07:28Z FULL MOON IN4 days

// Nearest reporting stations · 5 shown · 60 NM radius

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

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