// Station · 25m ago

TJSJ

Luis Munoz Marin International Airport

CAT VFR

WIND 070° / 17 kt G23

VIS 9.0 SM

CEILING Few/scattered only

T/Td 32.2°C / 25°C

ALTIM 29.97 inHg

ELEV 9 FT

18.4394°N / 66.0018°W

LOCATION · San Juan, PR

WIND

070°17 kt

TJSJ · 9 FT

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

METRIC

NOW · 19Z

+6H

+12H

+18H

WIND

070°/17G23

VIS

9.0 SM

CEILING

—

LAYERS

FEW035 SCT055 SCT095

T / Td

32 / 25

ALTIM

29.97"

// Interpretation

VFR with brisk winds at 070°/17 kt, gusting 23. Visibility 9.0 SM and a few at 3,500 ft, scattered at 5,500 ft, and scattered at 9,500 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 TJSJ 251956Z 07017G23KT 9SM FEW035 SCT055 SCT095 32/25 A2997 RMK AO2 PK WND 06028/1859 SLP148 HZ ALQDS T03220250 $

TJSJ · day 25 at 19:56 UTC · wind from 070° at 17 kt, gusts to 23 kt · visibility 9.0 SM · a few clouds at 3,500 ft · scattered layer at 5,500 ft · scattered layer at 9,500 ft · temp 32°C / dewpoint 25°C · altimeter 29.97" Hg · automated station w/ precipitation discriminator · sea-level pressure 1014.8 mb

// Runway analysis · computed from current METAR wind

Wind 070° @ 17 ktG23

2 USABLE · 2 AVOID

WIND

070°17G23 kt

HEADWIND CAUTION · HIGH XW AVOID · TAILWIND

HEADWIND ENDS 2 usable

08★ HDG 080° H17 kt X3 kt LEFT PRIMARY · 10,002'

10 HDG 100° H15 kt X8 kt LEFT 8,016'

TAILWIND ENDS · AVOID 2 ends

28 HDG 280° T15 kt X9 kt RIGHT —

26 HDG 260° T17 kt X3 kt RIGHT —

Pattern altitude: 1,009 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

2,000FT

+1,991 FT ABOVE FIELD ELEV

// DA · LAST 24 HOURS ↗ +300 FT

24h AGO18h12h6hNOW

FIELD ELEV9 FT OAT+32°C ISA DELTA+17°C PRESSURE ALT-44 FT

// Performance equivalent Your aircraft will perform as if it's at a field 2,000 ft high on a standard ISA day — that's +1,991 ft above TJSJ's actual elevation.

// Aircraft performance impact SIGNIFICANT

TAKEOFF ROLL CLIMB RATE

Single-engine propC172, PA-28, Cherokee

+20%

-14%

Turbo / high-perf pistonSR22T, Bonanza, Mooney

+14%

-9%

Light jetCJ4, Phenom 300, M2

+8%

-6%

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 · 3 reported · highest to lowest

// Reported layers (highest → lowest)

SCT095

Scattered · base 9,500 ft AGL · ~3–4 oktas

SCT055

Scattered · base 5,500 ft AGL · ~3–4 oktas

FEW035

Few · base 3,500 ft AGL · ~1–2 oktas

// Computed

CEILING— HIGHEST LAYER9,500 ft TOTAL COVERAGE~56% (mixed) FREEZING LEVEL16,272 ft VFR MARGINunlimited

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

10:09ZSUNRISE

16:27ZSOLAR NOON

22:45ZSUNSET

23:08ZCIVIL END

CURRENT20:21Z DAYLIGHT REMAINING2h 24m VFR NIGHT BEGINS23:08Z (2h 46m) DAY LENGTH12h 36m

Waxing Gibbous

ILLUMINATION94% MOONRISE20:20Z MOONSET08:56Z FULL MOON IN2 days

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