// Station · 16m ago

MROC

Juan Santamaría International Airport

CAT VFR

WIND 090° / 13 kt

VIS 6+ SM

CEILING BKN at 10,000 ft

T/Td 26°C / 18°C

ALTIM 30.02 inHg

WX -DZ

ELEV 3,021 FT

9.9939°N / 84.2088°W

LOCATION · San José (Alajuela), CR

WIND

090°13 kt

MROC · 3,021 FT

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

METRIC

NOW · 16Z

+6H

+12H

+18H

WIND

090°/13

VIS

6+ SM

CEILING

BKN100

LAYERS

SCT035 BKN100

T / Td

26 / 18

ALTIM

30.02"

// Interpretation

VFR — ceiling 10,000 ft. Brisk winds at 090°/13 kt, visibility 6+ SM, scattered at 3,500 ft, and broken at 10,000 ft. Reported weather: light drizzle (-DZ). 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 MROC 251600Z COR 09013KT 9999 -DZ SCT035 BKN100 26/18 A3002 NOSIG

MROC · day 25 at 16:00 UTC · wind from 090° at 13 kt · visibility 6+ SM · scattered layer at 3,500 ft · broken layer at 10,000 ft · temp 26°C / dewpoint 18°C · altimeter 30.02" Hg · weather: light drizzle (-DZ)

// Runway analysis · computed from current METAR wind

Wind 090° @ 13 kt

1 USABLE · 1 AVOID

WIND

090°13 kt

HEADWIND CAUTION · HIGH XW AVOID · TAILWIND

HEADWIND ENDS 1 usable

07★ HDG 070° H12 kt X4 kt RIGHT PRIMARY · 9,882'

TAILWIND ENDS · AVOID 1 ends

25 HDG 250° T12 kt X4 kt LEFT —

Pattern altitude: 4,021 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

4,900FT

+1,879 FT ABOVE FIELD ELEV

// DA · LAST 24 HOURS loading…

FIELD ELEV3,021 FT OAT+26°C ISA DELTA+17°C PRESSURE ALT2,918 FT

// Performance equivalent Your aircraft will perform as if it's at a field 4,900 ft high on a standard ISA day — that's +1,879 ft above MROC's actual elevation.

// Aircraft performance impact MODERATE

TAKEOFF ROLL CLIMB RATE

Single-engine propC172, PA-28, Cherokee

+49%

-34%

Turbo / high-perf pistonSR22T, Bonanza, Mooney

+34%

-22%

Light jetCJ4, Phenom 300, M2

+20%

-15%

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 · 2 reported · highest to lowest

// Reported layers (highest → lowest)

BKN100

Broken · base 10,000 ft AGL · ~5–7 oktas

SCT035

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

// Computed

CEILING10,000 ft AGL HIGHEST LAYER10,000 ft TOTAL COVERAGE~83% (mostly covered) FREEZING LEVEL16,152 ft VFR MARGIN+7,000 ft

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

11:29ZSUNRISE

17:40ZSOLAR NOON

23:51ZSUNSET

00:12ZCIVIL END

CURRENT16:16Z DAYLIGHT REMAINING7h 34m VFR NIGHT BEGINS00:12Z (7h 56m) DAY LENGTH12h 22m

Waxing Gibbous

ILLUMINATION94% MOONRISE21:31Z MOONSET09:53Z FULL MOON IN2 days

// Nearest reporting stations

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

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