// Station · 15m ago

CYMX

Montreal Mirabel International Airport

CAT VFR

WIND 220° / 3 kt

VIS 10+ SM

CEILING BKN at 4,900 ft

T/Td 20°C / 16°C

ALTIM 29.93 inHg

ELEV 270 FT

45.6795°N / 74.0387°W

LOCATION · Montréal, CA

WIND

220°3 kt

CYMX · 270 FT

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

METRIC

NOW · 16Z

+6H

+12H

+18H

WIND

220°/3

VIS

10+ SM

CEILING

BKN049

LAYERS

SCT028 BKN049 BKN250

T / Td

20 / 16

ALTIM

29.93"

// Interpretation

VFR — ceiling 4,900 ft. Light winds at 220°/3 kt, visibility better than 10 statute miles, scattered at 2,800 ft, broken at 4,900 ft, and broken at 25,000 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 CYMX 251600Z 22003KT 180V290 45SM SCT028TCU BKN049 BKN250 20/16 A2993 RMK TCU3CU4CI1 CI TR SLP138 DENSITY ALT 1000FT

CYMX · day 25 at 16:00 UTC · wind from 220° at 3 kt · visibility 10+ SM · scattered layer at 2,800 ft · broken layer at 4,900 ft · broken layer at 25,000 ft · temp 20°C / dewpoint 16°C · altimeter 29.93" Hg · sea-level pressure 1013.8 mb

// Runway analysis · computed from current METAR wind

Wind 220° @ 3 kt

ALL USABLE · WINDS CALM

WIND

220°3 kt

HEADWIND CAUTION · HIGH XW AVOID · TAILWIND

ALL RUNWAYS · CALM WINDS 4 ends

06 HDG 060° —CALM —— 12,000'

24 HDG 240° —CALM —— 12,000'

11 HDG 110° —CALM —— 8,852'

29 HDG 290° —CALM —— 8,852'

Pattern altitude: 1,270 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 +6°C

900FT

+630 FT ABOVE FIELD ELEV

// DA · LAST 24 HOURS loading…

FIELD ELEV270 FT OAT+20°C ISA DELTA+6°C PRESSURE ALT258 FT

// Performance equivalent Operating here right now feels like operating at CYSG (Saint-Georges Airport, Saint-Georges, elev 893 ft) on a standard ISA day.

// Aircraft performance impact MINOR

TAKEOFF ROLL CLIMB RATE

Single-engine propC172, PA-28, Cherokee

+9%

-6%

Turbo / high-perf pistonSR22T, Bonanza, Mooney

+6%

-4%

Light jetCJ4, Phenom 300, M2

+4%

-3%

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)

BKN250

Broken · base 25,000 ft AGL · ~5–7 oktas

BKN049

Broken · base 4,900 ft AGL · ~5–7 oktas

SCT028

Scattered · base 2,800 ft AGL · ~3–4 oktas

// Computed

CEILING4,900 ft AGL HIGHEST LAYER25,000 ft TOTAL COVERAGE~91% (overcast) FREEZING LEVEL10,371 ft VFR MARGIN+1,900 ft

// Sun & Moon · times in Z · bar = local day (UTC-5)

10:10ZSUNRISE

16:59ZSOLAR NOON

23:49ZSUNSET

00:20ZCIVIL END

CURRENT16:15Z DAYLIGHT REMAINING7h 33m VFR NIGHT BEGINS00:20Z (8h 04m) DAY LENGTH13h 39m

Waxing Gibbous

ILLUMINATION94% MOONRISE20:12Z MOONSET09:51Z FULL MOON IN2 days

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

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