// Station · 57m ago

MSSS

Ilopango International Airport

CAT VFR

WIND 330° / 6 kt

VIS 6+ SM

CEILING CLR

T/Td 22°C / 21°C

ALTIM 29.97 inHg

ELEV 2,027 FT

13.6995°N / 89.1199°W

LOCATION · San Salvador, SV

WIND

330°6 kt

MSSS · 2,027 FT

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

METRIC

NOW · 13Z

+6H

+12H

+18H

WIND

330°/6

VIS

6+ SM

CEILING

CLR

LAYERS

—

T / Td

22 / 21

ALTIM

29.97"

// Interpretation

VFR with light winds at 330°/6 kt. Visibility 6+ SM and no reported cloud layers. 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 MSSS 111300Z 33006KT 300V010 CAVOK 22/21 Q1015 A2999 NOSIG

MSSS · day 11 at 13:00 UTC · wind from 330° at 6 kt · visibility 6+ SM · temp 22°C / dewpoint 21°C · altimeter 29.97" Hg

// Runway analysis · computed from current METAR wind

Wind 330° @ 6 kt

1 USABLE · 1 AVOID

WIND

330°6 kt

HEADWIND CAUTION · HIGH XW AVOID · TAILWIND

HEADWIND ENDS 1 usable

33★ HDG 330° H6 kt X0 kt — PRIMARY · 7,349'

TAILWIND ENDS · AVOID 1 ends

15 HDG 150° T6 kt X0 kt — —

Pattern altitude: 3,027 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 +11°C

3,300FT

+1,273 FT ABOVE FIELD ELEV

// DA · LAST 24 HOURS ↘ -300 FT

24h AGO18h12h6hNOW

FIELD ELEV2,027 FT OAT+22°C ISA DELTA+11°C PRESSURE ALT1,974 FT

// Performance equivalent Your aircraft will perform as if it's at a field 3,300 ft high on a standard ISA day — that's +1,273 ft above MSSS's actual elevation.

// Aircraft performance impact SIGNIFICANT

TAKEOFF ROLL CLIMB RATE

Single-engine propC172, PA-28, Cherokee

+33%

-23%

Turbo / high-perf pistonSR22T, Bonanza, Mooney

+23%

-15%

Light jetCJ4, Phenom 300, M2

+13%

-10%

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 · clear · no layers reported

// Reported layers (highest → lowest)

CLR

No reported cloud layers — clear sky from surface to reporting ceiling.

// Computed

CEILING— HIGHEST LAYER— TOTAL COVERAGEclear FREEZING LEVEL13,138 ft VFR MARGINunlimited

// Sun & Moon · times in Z · bar = local day (UTC-6)

11:36ZSUNRISE

18:03ZSOLAR NOON

00:29ZSUNSET

00:52ZCIVIL END

CURRENT13:57Z DAYLIGHT REMAINING10h 31m VFR NIGHT BEGINS00:52Z (10h 55m) DAY LENGTH12h 52m

Waning Crescent

ILLUMINATION11% MOONRISE09:00Z MOONSET21:52Z FULL MOON IN18 days

// Nearest reporting stations

No nearby reporting stations found within 200 NM of MSSS.

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

AIRSPACE

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