// Station · 10h 50m ago · STALE · HARD STALE

MSSS

Ilopango International Airport

CAT MVFR

WIND 170° / 7 kt

VIS 5.0 SM

CEILING Few/scattered only

T/Td 26°C / 23°C

ALTIM 29.88 inHg

WX BR

ELEV 2,027 FT

13.6995°N / 89.1199°W

LOCATION · San Salvador, SV

WIND

170°7 kt

MSSS · 2,027 FT

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

METRIC

NOW · 00Z

+6H

+12H

+18H

WIND

170°/7

VIS

5.0 SM

CEILING

—

LAYERS

FEW010

T / Td

26 / 23

ALTIM

29.88"

// Interpretation

MVFR — visibility 5.0 SM. Light winds at 170°/7 kt, visibility 5.0 SM, a few at 1,000 ft. Reported weather: BR. Would drop to IFR below 1,000 ft ceiling or 3 SM visibility, or rise back to VFR above 3,000 ft and 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 270000Z 17007KT 130V200 8000 4000N BR FEW010 26/23 Q1012 A2989 NOSIG RMK DSTN CB NE

MSSS · day 27 at 00:00 UTC · wind from 170° at 7 kt · visibility 5.0 SM · a few clouds at 1,000 ft · temp 26°C / dewpoint 23°C · altimeter 29.88" Hg · weather: BR

// Runway analysis · computed from current METAR wind

Wind 170° @ 7 kt

1 USABLE · 1 AVOID

WIND

170°7 kt

HEADWIND CAUTION · HIGH XW AVOID · TAILWIND

HEADWIND ENDS 1 usable

15★ HDG 150° H7 kt X2 kt RIGHT PRIMARY · 7,349'

TAILWIND ENDS · AVOID 1 ends

33 HDG 330° T7 kt X2 kt LEFT —

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 +15°C

3,900FT

+1,873 FT ABOVE FIELD ELEV

// DA · LAST 24 HOURS ↗ +500 FT

24h AGO18h12h6hNOW

FIELD ELEV2,027 FT OAT+26°C ISA DELTA+15°C PRESSURE ALT2,063 FT

// Performance equivalent Your aircraft will perform as if it's at a field 3,900 ft high on a standard ISA day — that's +1,873 ft above MSSS's actual elevation.

// Aircraft performance impact SIGNIFICANT

TAKEOFF ROLL CLIMB RATE

Single-engine propC172, PA-28, Cherokee

+39%

-27%

Turbo / high-perf pistonSR22T, Bonanza, Mooney

+27%

-18%

Light jetCJ4, Phenom 300, M2

+16%

-12%

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)

FEW010

Few · base 1,000 ft AGL · ~1–2 oktas

// Computed

CEILING— HIGHEST LAYER1,000 ft TOTAL COVERAGE~15% (sparse) FREEZING LEVEL15,158 ft VFR MARGINunlimited

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

11:29ZSUNRISE

17:55ZSOLAR NOON

00:20ZSUNSET

00:43ZCIVIL END

CURRENT10:50Z DAYLIGHT REMAINING13h 30m VFR NIGHT BEGINS00:43Z (13h 53m) DAY LENGTH12h 51m

Waxing Gibbous

ILLUMINATION83% MOONRISE20:12Z MOONSET09:03Z FULL MOON IN4 days

// Nearest reporting stations · 5 shown · 150 NM (sparse area)

MSLP

VFR

El Salvador International Airport Saint Óscar Arnulfo Romero y Galdámez · San Salvador (San Luis Talpa)

WIND: VRB / 2 kt
VIS: 6+ SM
CEILING: FEW027
DIST: 16 NM S
AGE: 38m ago

MGGT

VFR

La Aurora International Airport · Guatemala City

WIND: CALM
VIS: 6+ SM
CEILING: CLR
DIST: 98 NM NW
AGE: 50m ago

MHTG

MVFR → VFR 14Z

Toncontín Airport · Tegucigalpa

WIND: CALM
VIS: 5.0 SM
CEILING: FEW032
DIST: 113 NM E
AGE: 50m ago

MGPB

VFR

Puerto Barrios Airport · Puerto Barrios

WIND: CALM
VIS: 6+ SM
CEILING: CLR
DIST: 126 NM N
AGE: 50m ago

MHLM

VFR

Ramón Villeda Morales International Airport · San Pedro Sula

WIND: 220° / 5 kt
VIS: 6+ SM
CEILING: FEW020
DIST: 126 NM NE
AGE: 50m ago

// Area map · 140 NM radius · CartoDB Dark Matter + aeronautical overlay

AIRSPACE

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