// Station · 16m ago

CYMX

Montreal Mirabel International Airport

CAT VFR

WIND 300° / 3 kt

VIS 10+ SM

CEILING Few/scattered only

T/Td 17°C / 14°C

ALTIM 30.28 inHg

ELEV 270 FT

45.6795°N / 74.0387°W

LOCATION · Montréal, CA

WIND

300°3 kt

CYMX · 270 FT

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

METRIC

NOW · 01Z

+6H

+12H

+18H

WIND

300°/3

VIS

10+ SM

CEILING

—

LAYERS

FEW040 FEW120 FEW250

T / Td

17 / 14

ALTIM

30.28"

// Interpretation

VFR with light winds at 300°/3 kt. Visibility better than 10 statute miles and a few at 4,000 ft, a few at 12,000 ft, and a few 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 170100Z CCA 30003KT 25SM FEW040 FEW120 FEW250 17/14 A3028 RMK CU1AC1CI1 CU TR SLP258

CYMX · day 17 at 01:00 UTC · wind from 300° at 3 kt · visibility 10+ SM · a few clouds at 4,000 ft · a few clouds at 12,000 ft · a few clouds at 25,000 ft · temp 17°C / dewpoint 14°C · altimeter 30.28" Hg · sea-level pressure 1025.8 mb

// Runway analysis · computed from current METAR wind

Wind 300° @ 3 kt

ALL USABLE · WINDS CALM

WIND

300°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 +2°C

100FT

-170 FT BELOW FIELD ELEV

// DA · LAST 24 HOURS loading…

FIELD ELEV270 FT OAT+17°C ISA DELTA+2°C PRESSURE ALT-93 FT

// Performance equivalent Operating here right now feels like operating at CTU5 (La Tabatière Airport, La Tabatière, elev 102 ft) on a standard ISA day.

// Aircraft performance impact ENHANCED

TAKEOFF ROLL CLIMB RATE

Single-engine propC172, PA-28, Cherokee

+1%

-1%

Turbo / high-perf pistonSR22T, Bonanza, Mooney

+1%

-0%

Light jetCJ4, Phenom 300, M2

+0%

-0%

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)

FEW250

Few · base 25,000 ft AGL · ~1–2 oktas

FEW120

Few · base 12,000 ft AGL · ~1–2 oktas

FEW040

Few · base 4,000 ft AGL · ~1–2 oktas

// Computed

CEILING— HIGHEST LAYER25,000 ft TOTAL COVERAGE~31% (mixed) FREEZING LEVEL8,856 ft VFR MARGINunlimited

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

10:36ZSUNRISE

16:52ZSOLAR NOON

23:07ZSUNSET

23:37ZCIVIL END

CURRENT01:16Z DAYLIGHT REMAINING0m VFR NIGHT BEGINS23:37Z (past) DAY LENGTH12h 31m

Waxing Crescent

ILLUMINATION28% MOONRISE14:50Z MOONSET03:21Z FULL MOON IN10 days

// Nearest reporting stations

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

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